Answer:
Las unidades de Mendel se conocen ahora como GENES
Explanation:
Durante sus experimentos, Mendel demostró que las características de las plantas de guisante (por ejemplo color de la flor, color de la semilla, forma de la semilla, altura de la planta, etcétera) eran heredadas, y denominó "elementos" a las unidades portadoras de dichas características. Es decir que cada elemento o unidad discreta, era el responsable de que la planta exprese una u otra característica. Estableció que estos elementos se redistribuían independientemente uno de otro, generación tras generación. Con el paso del tiempo y el avance de las investigaciones, estas unidades o elementos fueron denominados Genes.
Oil _____.
is a renewable resource
can be used directly from the ground
is the least polluting energy source
must be removed from the earth using drills
Oil well is a renewable resource
can be used directly from the ground
is the least polluting energy source
must be removed from the earth using drills
Hemophilia is an X-linked recessive disorder that is passed through generations and can be traced by using a pedigree. Who has hemophilia in the pedigree that is shown? A)John and Ann B)Fred and Luke C)John, Charles, Jack, and Irene D)Ann and Marie
Answer:
B)Fred and Luke
Explanation:
On the pedigree, it is obvious that they suffer from hemophilia because they appear colored, but males(XY) need only one allele for hemophilia to be sufferers.
In hemophilia, it is x linked recessive disorder in males having X and Y chromosomes, so he need only one x chromosome in recessive manner, hence in pedigree analysis Fred and luke having has hemophilia, hence option b is correct
What is hemophilia?Hemophilia is a hereditary bleeding disorder in which the blood lacks to clot properly. This can occur for both spontaneous and post-injury or operative bleeding.
On the pedigree, it is observed that they suffer from hemophilia because it is x linked recessive disorder, they appear colored, but males (XY) need only one allele for hemophilia to be sufferers.
Blood contains several proteins known as coagulation factors that can assist in the prevention of bleeding. Although its rare, acquired hemophilia is a serious illness.
Therefore Fred and luke have hemophilia because males having chromosome XY, need only one allele for the disease, hence opton b is correct.
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The number and location of transmembrane segments in an integral membrane protein can be inferred from the amino acid sequence of the protein by a:__________.
a. computer-generated DNA sequence.
b. freeze-fracture replica.
c. prediction of glycosylation sites.
d. Western blot.
e. hydropathy plot.
Answer:
The number and location of transmembrane segments in an integral membrane protein can be inferred from the amino acid sequence of the protein by a computer-generated hydropathy plot (which is actually a combination of option A and E)
Explanation:
The hydropathi plot is something that enable us to measure the hydrophilicity or hydrophobicity of amino acids in a protein. The computer-generated hydropathy plot identifies the number and location of transmembrane segments. There are plenty of proteins in cells membranes that play different roles and functions. Some of them react to different ph, others with different minerals and other react to water.
Protein molecules are found in the lipid bilayer structure of the plasma membrane. The proteins are found as integral or peripheral proteins.
The location and the number of transmembrane segments can be given by:
Option e. Hydropathy plot
The technique can be explained as:
The hydropathy plots are capable of determining the position and the quantity of the integral membrane protein.It enables measuring the hydrophobic and hydrophilic sides of amino acids of proteins. This enables in identifying the property of the side chain amino acid.Therefore, a hydropathy plot should be used.
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Please help me.. ty if you do
Chloe is studying the effect a certain kind of fungus has on bacteria. Which of the following could be her hypothesis?
"I notice that when a certain fungus is present in a bacterial culture, the bacteria do not grow".
"Based on my tests, I realize that this fungus kills bacteria".
"I predict that the bacterial cultures in which I place this fungus will not grow".
"I propose that this fungus somehow kills bacteria."
Answer:
I propose that this fungus somehow kills bacteria
Explanation:
you rule out 2,3 because a hypotheses has not yet been proven therefore it is not certain
while in 1 in some cases the bacteria can also over power and kill the fungi using genes
but I chose 4 since fungi lack chloroplasts so they feed of ready made food and bacteria can be autotrophic therefore can manufacture food and so the fungi digests the bacteria in the process of trying to acquire the food since they don't have cell walls I guess
PCR is used to – DNA. It uses – to separate a DNA molecule, and then uses a(n) – to start – at a point selected by scientists. This technique can produce millions of – of a targeted DNA sequence.
Answer:
The correct answer is - amplify, heat, primer, replication and copies.
Explanation:
Polymerase chain reaction is known as PCR. PCR is also known as a method that rapidly produce millions to billions copies of atargeted DNA sequence. It is widely used method for the separation of small DNA and amplify it to large amount to study by scientists.
So, the missing parts of the paragraph would be -
PCR is used to amplify DNA. It uses heat to separate a DNA molecule, and then uses a primer to start replication at a point selected by scientists. This technique can produce millions of copies of a targeted DNA sequence.
Thus, the correct answer would be -amplify, heat, primer, replication and copies.
Madison lives near the ocean. She’s formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. If Madison plans to test this hypothesis, she will have to deal with the following variables in her experiment: dependent variable: independent variable:
The given question is incomplete, the complete question is:
Madison lives near the ocean. She’s formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. If Madison plans to test this hypothesis, she will have to deal with the following variables in her experiment: dependent variable: independent variable: one possible confounding variable:
Answer:
A variable, which is under study or observation in an experiment and changes concerning the independent variable is termed as a dependent variable. Based on the given experiment, Madison is checking the influence on the progression of corrosion of metals concerning the variations in the concentration of salt. This shows that the extent of corrosion of metals is a dependent variable.
A variable, which can be controlled or monitored like increased or decreased, and one is familiar with is termed as an independent variable. This variable is not affected by another variable, like a change in the concentration of salt is the air may exhibit an effect on the corrosion of the metal, however, the process that is, the corrosion of metals does not affect the concentration of salt in the air. Hence, the independent variable is the salt concentration in air.
A variable that possesses the tendency to change or influence both the independent and dependent variables is known as a confounding variable. If the airspeed is higher than it will carry the salt particles at a brisk rate and speed resulting in enhanced corrosion of metals. Likewise, if the speed of air is slower, there will be a reduction in the corrosion of metals. Hence, the confounding variable is the speed of air.
The following is a list of the steps that occur in the production of an auditory sensation.
1. The pressure wave distorts the basilar membrane on its way to the round window.
2. Movement of the tympanic membrane causes displacement of the malleus.
3. Displacement of the stereocilia stimulates sensory neurons of the cochlear nerve.
4. Movement of the malleus causes movement of the incus and stapes.
5. Distortion of the basilar membrane forces the hair cells of the organ of Corti toward or away from the tectorial membrane.
6. Movement of the oval window establishes pressure waves in the perilymph of the vestibular duct.
The proper sequence for these steps is:_____.
a. 2, 4, 6, 3, 5, 1.
b. 2, 4, 1, 6, 5, 3.
c. 2, 1, 4, 6, 5, 3.
d. 2, 5, 4, 6, 1, 3.
e. 2, 4, 6, 1, 5, 3.
movement of the tympanic membrane causes displacement of the malleus
Some people have sustained brain damage and lost the ability to identify color. Other people sustained different brain damage and lost the ability to detect motion. What does this indicate about our visual system
plz halp xc
What is a system of classification that uses yes/no questions about the
observable physical characteristics of an organism in order to classify it?
A) dichotomous keys
B) trichotomous maps
C) unochotomous keys
D) pentachotomous maps
Which of these questions would be the MOST appropriate at a decision point on a dichotomous key?
A.) Can the animal see?
B.) Can the animal swim?
C.) How big is the animal?
D.) Does the animal have legs?
Which of these questions would be the MOST appropiate at a decision point on a dichotomous key?
A.) Can the animal run?
B.) Does the plant have flowers?
C.) What shape are the tree's leaves?
D.) How many legs does the animal have?
Answer:
ok.
Explanation:
First question: A
Second question: C
Third question: B
Hope this helped. Good luck on that test/Quiz!
One primary advantage of light microscopy over electron microscopy is that ________. light microscopy provides higher contrast than electron microscopy light microscopy provides for higher magnification than electron microscopy light microscopy allows the visualization of dynamic processes in living cells light microscopy provides for higher resolution than electron microscopy
Answer:
light microscopy allows the visualization of dynamic processes in living cells light
Explanation:
Light microscopy has a biggest advantage over electron microscopy because it all the visualisation or ability to observe living cells and biological activity such as the uptake of food, cell division and movement. Light microscopy can be use in-vivo staining techniques to visualise the uptake of colored pigments by the cells which cannot be observed with electron microscopy because in electron microscopy the element must be fixed, dehydrated or dead before been visualised . Electron microscope cannot observe living cells and can only observe dead or dry specimens so that electrons can pass through the specimen to be able to observe.
Light microscope has higher penetrating power than electron microscopy thus allows the visualization of dynamic processes in living cells. Therefore, option c is correct.
Microscopy is the technical field of using microscopes to view samples & objects that cannot be seen with the unaided eye.
Light microscopes can also be used to visualize dynamic processes in living cells because it has greater penetrating power than electron. Electron microscopes uses high-energy electrons that would damage the cells.
Electrons have shorter wavelength than visible light, so provide higher resolution than light microscopes.
Electrons have much a shorter wavelength than visible light, and this allows electron microscopes to produce higher-resolution images than standard light microscopes.
Therefore, option c is correct that light microscopy allows the visualization of dynamic processes in living cells.
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The complete question is:
One primary advantage of light microscopy over electron microscopy is that
1. light microscopy provides higher contrast than electron microscopy.
2.Light microscopy provides higher resolution than electron microscopy.
3.Light microscopy allows the visualization of dynamic processes in living cells.
4.Light microscopy provides higher magnification than electron microscopy.
What is the correct chronological order of important evolutionary events? Group of answer choices Evolution of bipedalism; regular use of stone tools; enlargement of brain to around 1,450 cc; increase in enamel thickness.
Answer:
evolution of bidepadlism,
increase in enamel thickness,
regular use of stone tools, enlargement of brain to around 1,450 cc
Explanation:
Suzanne has type A- blood. Which blood type could she receive in a blood transfusion? A) A+ B) O- C) O+ D) B-
Answer:
Those with A+ can only receive red blood cells from A or O blood types.
Answer:
O-
Explanation:
because.
How will loud music affect the number of tadpoles that develop into frogs in a pond?
Answer:
the loud music may scare the frogs thus meaning they may not want to come out to mate
explain what is meant by emergent properties when explaining how a beaker full of chemicals is different than an animal made of that same mix of chemicals
Answer:
In biology, an emergent property is a property possessed by a collective and complex system of constituents, which is lacking in the individual component of the system
Emergent properties are therefore, an important aspect of biological system, for example, a beaker containing graphite (carbon) and ammonium ions in solution contains the same chemicals found in the human brain used to control movement and store memory whereas the chemicals in the beaker are idle.
Explanation:
What is the difference between a parent isotope and a daughter isotope?
Answer:
Each combination of an element with a different number of neutrons is called an isotope. The radioactive isotope is called the parent, and the isotope formed by the decay is called the daughter
Identify the parts of the female reproductive system by labeling the diagram.
1. Fallopian tube.
2. uterus
3. Fimbriae
4. ovary
5. cervix
6. vagina
hope this answer correct :)
Tamir starts earning better grades in school than his sister. Which conflict will this most likely create? Tamir’s sister will begin to get poor grades in school. The siblings will begin to compete against each other. The siblings will push the boundaries against authorities. Tamir will make fun of his sister by bragging about his grades.
Answer:
The siblings will begin to compete against eachother.
Explanation:This often happens with siblings as a sort of rivalry.
The siblings will start competing with each other to get better grades. The correct answer is B.
Why will the siblings start competing?A conflict will arise when there is a difference between actions or thoughts among two or more people.
Tamir will develop a sense of superiority over his sister only on the basis of earning better grades. Thus, to maintain that position, he will try his best to consistently score more than his sister.
Whereas, his sister will develop a sense of inferiority or insecurity due to scoring lesser than him. Due to this, she will be determined to score more than him in every upcoming exam and defeat him.
This will lead to a sense of competition to achieve more than the other in every examination.
Thus, the correct option is B.
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DNA is the genetic material that makes up living things, and folic acid plays an important role in the formation of DNA. Jon wants to study the effect of folic acid on DNA formation in microbes. Which statement accurately describe the variables in this study? A. The amount of folic acid and DNA synthesized are both dependent variables. B. The amount of folic acid and DNA synthesized are both independent variables. C. The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable. D. The amount of folic acid is the dependent variable, and the DNA synthesized is the independent variable. E. The amount of folic acid and DNA synthesized are neither dependent nor independent variables.
Answer:
The correct answer is - C. The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
Explanation:
DNA is the genetic material of most of the living organisms. In this question, Joe wants to study to see the effect of folic acid on the synthesis of the DNA. Folic acid ae the essential nutrients or vitamin for the synthesis of nitrogen bases of the DNA that are purines and pyrimidines. A dependent variable and an independent variable are two important part of any experiment.
A dependent variable is a variable being tested and measured. In the experiment Jon is conducting, the amount of DNA becomes a dependent variable that is being tested and measured in the presence of folic acid. And folic acid is the independent variable tested to check the formation of DNA in bacteria.
Thus, the correct answer is - C. The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
Answer:
The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
Explanation:
Edmentum
What is the function of the structure below, which is part of a fungus?
A. Energy production
B. Photosynthesis
C. Reproduction
Ο Ο
DP
D. Nutrient absorption
Answer: I want to say nutrient absorption
Explanation: I see you're doing biology ap ex too I need help on my biology unit 2 ap ex pretest please help me! I only have a little while!!!!
(Applicable answer gets brainliest) community is located in the desert, near an area with high winds. There is very little rainfall or clouds and no large rivers nearby. The people want to build a power plant that will not pollute. They are choosing among solar, biomass, or hydroelectric power. Write one to two sentences about each of these energy sources. Describe whether each energy source would meet their goals and whether it is a good energy source for their area.
Answer:
In the given scenario, solar power would be the best and the most effective kind of power plant to be constructed in the mentioned location. This is because the generation of pollution by using solar power is negligible. Apart from this, the use of solar power plants would be the most ideal in the given community resources as the community is receiving ample amount of sunlight and the presence of less cloud cover makes the application of solar power more feasible.
If one considers biomass, then there would be the requirements of the things like crops, wood, alcohol fuels for burning so that energy can be generated, and with more than the required amount of sunlight and less or no irrigation, sources would make it hard to obtain the sources necessary for biomass power plant.
The hydroelectric energy would not even be a viable option in the given scenario as the community has no accessibility of natural water sources and the hydroelectric power concept primarily works on water storage.
Your heart rate is the number of times your heart beats per minute. Heart rate differs from person to person, and it changes with activity. You can find your heart rate by taking your pulse on your wrist or neck. Lightly place your fingers on your wrist or neck and try to find your pulse. Count your pulse for 10 seconds and then multiply that number by 6 to get your heart rate for a minute. What activities do you think will increase and decrease your heart rate?
Answer:
The heart beats 100,000 times a day, is the size of your fist, and creates enough energy to drive a truck 20 miles. Yes, the heart is our hardest working and most important muscle. One of the most surefire ways to rapidly increase your heart rate is Spinning. This low impact exercise can be performed at home if you have your own bike, or in a group setting. The faster you pedal and the more resistance you face, the higher your heart rate elevates. Having gained popularity because of its low impact and low injury risk, it (not surprisingly) also improves body composition, decreases fat mass and lowers blood pressure and cholesterol. Shorter bursts of high intensity exercise have been proven to increase your heart rate more than steady, low intensity workouts. Interval training of high intensity exercise followed by a short rest period will result in both a healthier heart. For a less regimented, non-traditional workout, hiking will go a long way to ensure your heart rate is increasing steadily over a longer period of time. Hiking is a good way to improve your cardiovascular fitness, particularly if your route includes some hills, which will force your heart to work harder. Meditation activates our bodies' “rest-and-digest” functions, which counteracts our “flight-or-fight” responses. Integrating the practice into a daily routine has been linked to lower heart rate and blood pressure
Explanation:
The activities like running, swimming, cycling, jumping ropes, playing tennis, etc increase your heart rate, while the activities like deep breathing, relaxing in a silent environment with extreme calm, formal walking, relaxing exercises, etc, decreases your heart rate.
What is Heart rate?Heart rate may be defined as the number of times your heart beats or pumps in a minute with respect to your bodily activities.
Some physical activities are known to increase heart rate immediately while some of them may assist in the reduction of the heart rate significantly. Both these processes are good enough to maintain the overall condition of health prominently.
To maintain your proper cardiovascular health, it is mandatory to do more physical exercises or activities that improve your heart rate gradually.
The names of those activities are briefly mentioned above.
Therefore, it is well described.
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Which of the ideal criteria for a successful screening program is satisfied by the following statement: Screening those older than 50 years using fecal occult blood testing every year and flexible sigmoidoscopy every 3-5 years have been shown to be effective strategies for screening for colon cancer?
A. Early detection improves outcome.
B. The disease produces substantial mortality or morbidity.
C. There is a feasible testing strategy.
D. Screening is acceptable in terms of costs, harms, and patient acceptance.
Answer:
A. Early detection improves outcome.
Explanation:
These screening tests are carried out in order to the medical condition of the people who are older than 50 years. These screening tests tells us about the disease in early stages. The disease can be cured if they are diagnosed in early stages so early detection of the disease plays important role in saving the life of the patient from that dangerous disease and the results are in favor of the patient. If these screening tests are not carried out earlier so the disease may cause serious damage which leads to death.
Choose the incorrect statement from the following sentences. i.Chlorenchyma is specialized parenchyma that has chlorophyll pigment. ii.Apical meristem is responsible for growth of plants at root and shoot tips. iii.Parenchyma has thick cell wall and prominent nuclei. iv.Sclerenchyma gives stiffness and hardness to plants.
the third statement is wrong. Parenchymal cells have thin walls and the nuclei are not visible.
Which class of macromolecules is not organized in repeating units of monomers? proteins lipids nucleic acids carbohydrates
Answer:
lipids
Explanation:
Answer:
lipids
Explanation:
macromolecules are large molecules that are formed by the joining of smaller units. Lipids fit that description, but they aren't polymers because they are made up of smaller units of different kinds (like glycerol and fatty acids) rather than monomers that repeat themselves
Why is the citric acid cycle a cyclic pathway rather than a linear pathway?
In the oxidation of pyruvate to acetyl CoA, one carbon atom is released as CO2. However, the oxidation of the remaining two carbon atoms—in acetate—to CO2 requires a complex, eight-step pathway—the citric acid cycle. Consider four possible explanations for why the last two carbons in acetate are converted to CO2 in a complex cyclic pathway rather than through a simple, linear reaction.
Use your knowledge of the first three stages of cellular respiration to determine which explanation is correct.
The given question is incomplete as the four possible explanations or options are not provided, however, the correct options are as follows:
A) More ATP is produced per CO2 released in cyclic processes than in linear processes.
B) It is easier to remove electrons and produce CO2 from compounds with three or more carbon atoms than from a two-carbon compound such as acetyl CoA.
C) Redox reactions that simultaneously produce CO2 and NADH occur only in cyclic processes.
D) Cyclic processes, such as the citric acid cycle, require a different mechanism of ATP synthesis than linear processes, such as glycolysis.
Answer:
The correct answer would be - option B
Explanation:
Circular pathways or the cycles are able to carry out two or more than two entry and exit points for the substrate enzyme and products, So it is well suited for amphibolic reactions.
In a linear pathway, one reaction with particular substrate or reactants and result in products through the pathway completes the pathway, and the second reaction would be an independent event.
In citric acid cycle It is easier to eliminate electrons and gain carbon dioxide from compounds with 3 carbon or more carbon atoms than from a two-carbon compound such as acetyl CoA. pyruvate is 3 C compound while acetyl CoA is two carbon.
Thus, the correct answer is - option B
Which substance would most likely form sedimentary rock? cooled lava melted rock changed igneous rock small pebbles
Answer:
Small pebbles.
Explanation:
Sedimentary rock is formed by small sediments that, under pressure, join to form a larger rock. Things such as fossils, sand, pebbles, and shells can be found in sedimentary rock.
Hope this helps!
The substance would most likely form sedimentary rock - small pebbles
Sedimentary rocksare formed by the accumulation of sedimentsSedimentation is the collective name for processes that cause these particles to settle in place.Pieces of rock are loosened by weathering, then transported to some basin or depression where sediment is trapped.If the sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock.small Pebbles can be called a rock when they are cemented and create a conglomerate – a clastic sedimentary rock.Thus, The substance would most likely form sedimentary rock - small pebbles
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The route that the sensation of taste follows is a: Primary axons pass along cranial nerves VII and IX. b: Primary neurons synapse in the nucleus solitarius. c: Secondary neurons synapse in the thalamus. d: Tertiary neurons travel to the primary gustatory cortex.
Answer:
d: Tertiary neurons travel to the primary gustatory cortex.
Explanation:
The gustatory system is a sensory system that is responsible for the taste. when the food comes in contact with the taste cells present on the tongue so these taste buds carry information to the brain about flavor of the food. The chorda tympani nerve that is present at the front of the tongue, the glossopharyngeal nerve present at the back of the tongue and the vagus nerve present at the throat area and palate are the three nerve cells which carry signals to the brain stem.
Both the full body plate type and the half body plate trait are also present in an ocean near the lake. Where would you expect a higher occurrence of the full body plate trait, in the lake or the ocean? Explain your answer.
Answer:
In the ocean
Explanation:
Ecological divergence leads to selection of essential traits against migrants and hybrid species. The full body plate type traits requires attention for occurrence in an environment which is free from issues such as resource limitation or predator attacks. In vast ocean spaces , resources are not a limiting factor in ocean and also there is no risk of predators as there is huge chunk of space, thus, full body plate type will occur in higher number in the ocean.
hope it helps you..
The place where there would be a higher occurrence of the full body plate trait would be:
In the ocean
Based on the given question, we can see that when the ecological divergence which helps the full body plate type to have a higher occurrence in the lake because there is a need for attention.
With this in mind, we can see that in the ocean, there is the higher chance for the full body plate because of the absence of predators and the abundance of resources in the ocean.
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The underlined sentences demonstrate characterization. How does this technique support the author’s purpose?
Answer:
It shows how violent the situation was and how scared Enrique was.
Explanation:
The book "Enrique's Journey" by Sonia Nazario tells the true story of a young boy named Enrique on his quest to find his mother who has gone to America in search of work. The story delves into the dangerous and menacing obstacles that migrants like Enrique had to endure and go through to get to the safer land in America. This story is also like an insight into the borderlands that is between America and the South American nations, with migrants coming in masses in the hope of a better and peaceful future.
As seen in the excerpt from the book, the author provides a scene where gangsters threaten and even assault anyone who went as far as to help the authorities identify them. This very act of torturing or using violent means to keep people quiet shows how dangerous life is for the migrants while trying to get to the other side. The characterization in this passage shows the violent scene that migrants have to endure and the emotional fear that people like Enrique were put in.
Answer:
It shows how violent the situation was and how scared Enrique was.
Explanation:
25 POINTS!!!!!! Why may cancer cells developing in the tonsils be quickly destroyed? The tonsils are endocrine organs that house cancer-fighting hormones. The tonsils are lymphatic organs that produce cancer-fighting hormones. The tonsils are endocrine organs that produce cancer-fighting lymphocytes. The tonsils are lymphatic organs that house cancer-fighting lymphocytes.
Answer:
The correct option here is --
The tonsils are lymphatic organs that house cancer-fighting lymphocytes.
Answer:
The tonsils are lymphatic organs that house cancer-fighting lymphocytes.