Answer:
One of the characteristics of living things is the ability to replicate and pass on genetic information to the next generation. Cell division in individual bacteria and archaea
usually occurs by binary fission. Mitochondria and chloroplasts also replicate by binary fission, which is evidence of the evolutionary relationship between these organelles and prokaryotes.
Cell division in eukaryotes is more complex. It requires the cell to manage a complicated process of duplicating the nucleus, other organelles, and multiple
chromosomes. This process, called the cell cycle, is divided into three parts: interphase, mitosis, and cytokinesis. Interphase is separated into three functionally
distinct stages. In the first growth phase, the cells grows and prepares to duplicate its DNA. In synthesis, the chromosomes are replicated. The cell prepares to divide. In mitosis, the duplicated chromosomes are separated into two nuclei. In most cases, mitosis is followed by cytokinesis, when the cytoplasm divides and organelles separate into daughter cells. This type of cell division is asexual and important for growth, renewal, and repair of
multicellular organisms.
Cell division is tightly controlled by complexes made of several specific proteins. These complexes contain enzymes called cyclin-dependent kinases (CDKs), which turn on
or off the various processes that take place in cell division. CDK partners with a family of proteins called cyclins. One such complex is mitosis-promoting factor (MPF),
sometimes called maturation-promoting factor, which contains cyclin A or B and cyclin-dependent kinase (CDK). CDK is activated when it is bound to
cyclin, interacting with various other proteins that, in this case, allow the cell to proceed from G2 into mitosis. The levels of cyclin change during the cell cycle. In
most cases, cytokinesis follows mitosis.
Explanation:
Previous research shows that, in humans, the pelvic opening tends to be wider in females than males
1. Generate a hypothesis about what cause this pattern (pelvis wider in females than in males).
2. Describe the type or types of data you would ideally collect to test this hypothesis
3. Describe what hypothesis data might support the hypothesis (For example, the hypothesis would be supported if we found data that indicated....)
4. Describe what hypothetical data might regret the hypothesis and how would you rewrite your hypothesis to account for your findings and begin again.
Answer:
1. Pelvis is wider in females due to it is an anatomical feature that allows the childbirth
2. A study aimed at determining if the size of the pelvis shows association with problems during childbirth
3. Females with smaller pelvis frequently have problems during childbirth
4. Populational biases in the data regarding ethnicity, age, etc
Explanation:
A hypothesis is a proposed explanation for a given phenomenon from the real world. A scientific hypothesis needs to be tested by experimentation or observational procedures. A good hypothesis must fulfill two key requirements 1- it must be-testable, i.e., capable of being proved by using the scientific method, and 2-falsifiable, i.e., it must have a possible negative answer.
Why does the oceanic crust sink beneath the continental crust at a subduction boundary?
A)The oceanic crust has a greater density.
B)The oceanic crust is pulled downward by Earth's magnetic field.
C)The continental crust is composed of more magnesium and iron.
D)The continental crust is pulled upward by the Moon's gravity.
The oceanic crust sink beneath the continental crust at a subduction boundary as it is pulled downward by Earth's magnetic field. The correct option is B.
What is oceanic crust?The outermost layer of the Earth's lithosphere found beneath the oceans and formed at spreading centers on oceanic ridges that occur at divergent plate boundaries.
The thickness of the oceanic crust is approximately 6 km (4 miles). It is made up of several layers, not including the sediment on top.
The oceanic crust is mostly made up of dark-colored rocks called basalt and gabbro. It is thinner and denser than the continental crust, which is composed of light-colored rocks known as andesite and granite.
Because of its low density, continental crust "floats" high atop the viscous mantle, forming dry land.
As the Earth's magnetic field pulls downward, the oceanic crust sinks beneath the continental crust at a subduction boundary.
Thus, the correct option is B.
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• What is a virus? What are its components/structure and how does it affect the human immune system?
• What is the difference between a virus and a bacterium?
• Identify three ways that viruses and infectious diseases can be transmitted to humans and from human to human contact.
Simple short and easy search it up but try to use your own words instead of copying straight from the internet please
Answer:
Question 1 : A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea.
Question 2 (how does it affect the human immune system?) : Via cytotoxic cells. When a virus infects a person (host), it invades the cells of its host in order to survive and replicate. Once inside, the cells of the immune system cannot 'see' the virus and therefore do not know that the host cell is infected.
Question 3 (what are its components?) : The simplest virions consist of two basic components: nucleic acid (single- or double-stranded RNA or DNA) and a protein coat, the capsid, which functions as a shell to protect the viral genome from nucleases and which during infection attaches the virion to specific receptors exposed on the prospective host cell.
Question 4 (what is a viruses structure?) : All viruses contain nucleic acid, either DNA or RNA (but not both), and a protein coat, which encases the nucleic acid. ... Some viruses are also enclosed by an envelope of fat and protein molecules. In its infective form, outside the cell, a virus particle is called a virion.
Question 5 : As you might think, bacterial infections are caused by bacteria, and viral infections are caused by viruses. Perhaps the most important distinction between bacteria and viruses is that antibiotic drugs usually kill bacteria, but they aren't effective against viruses.
Question 6 : through the air, soiled objects, skin or mucous membrane, saliva, urine, blood and body secretions, through sexual contact, and through contaminated food and water.
Explanation:
Is Hydrophobie and lipophillic the same
Answer:
Hydrophobic molecules in water often cluster together, forming micelles. Hydrophobic is often used interchangeably with lipophilic, "fat-loving". However, the two terms are not synonymous. While hydrophobic substances are usually lipophilic, there are exceptions, such as the silicones and fluorocarbons.
Explanation:
The heart is made out of?
Answer:
chicken tikka
Explanation:
chicken and heart are maid of same substunce that is why im vegetariun
Answer:
Your heart is made up of three layers of tissue: Pericardium – a thin outer lining that protects and surrounds your heart. Myocardium – a thick muscular middle layer that contracts and squeezes blood out of your heart. Endocardium – a thin inner lining.
T or F: A prokaryote cell has a nucleus and other membrane-bound organells.
Answer: False
Explanation: because eukaryotic cells have nucleus cells
the answer is false its not true
Two nitrogen-containing groups are used to make urea in liver cells. What two molecules of the urea cycle contribute these two nitrogen
Answer:
NH4+ and aspartate are the two molecules of the urea cycle contribute these two nitrogen.
Explanation:
Two nitrogen-containing groups are used to make urea in liver cells. The nitrogen atoms enter the urea cycle as NH4+ and aspartate. The first step of the urea cycle take place in liver mitochondria. In liver mitochondria, NH4+ combines with HCO3- to form carbamoyl phosphate.
So,
NH4+ and aspartate are the two molecules of the urea cycle contribute these two nitrogen.
Ammonia and aspartate are the two molecules of the urea cycle contribute
these two nitrogen used in the formation of urea.
These compounds are produced in the liver through the breakdown of
amino acids in the liver. The amino acids undergo transamination and
deamination reactions which results in the formation of these compounds.
The ammonia which is highly toxic is converted into urea which is then
excreted from the body.
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Based on the information provided. In which domain would the organism be classified?
Protista
Eukarya
Bacteria
Archaea
Answer:
Archaea
Explanation:
Archaea Bacteria are the only bacteria that can adapt in crazy and impossible environments, Such as an underwater Volcano
Digestive problems can occur at nearly any point in the digestive process. Some problems are minor, like occasional heartburn, indigestion, or constipation. However, other problems like ulcers or cancer can be very serious. Medical treatment may also be required if a minor problem occurs persistently. Fortunately, there are also many dietary approaches that can help manage many digestive disorders. One condition that can be managed through diet is celiac disease, a serious autoimmune disease that causes damage to the small intestines when gluten is consumed. Select all the sentences below that correctly describe the proper identification and treatment of celiac disease.
a. People with celiac disease should include foods with dietary fiber such as beans, fruits, vegetables, brown rice, and quinoa.
b. In adults diagnosed with celiac disease, full recovery typically occurs within 3 to 6 months.
c. For people with celiac disease, ingesting small amounts of gluten is okay occasionally as long as doing so does not produce severe symptoms.
d. If a person feels better after trying a gluten-free diet, further testing is not necessary.
e. Home-cooked meals are a good way to increase variety and reduce the cost of a gluten-free diet.
Answer:
a. People with celiac disease should include foods with dietary fiber such as beans, fruits, vegetables, brown rice, and quinoa.
e. Home-cooked meals are a good way to increase variety and reduce the cost of a gluten-free diet.
Explanation:
Celiac disease is an autoimmune disease, as stated above. This disease causes the defense cells of an organism to attack the stomach cells causing an inflammation that is extended and stimulated by the glutem. As a result, the individual has diarrhea, constipation, weight loss, anemia, a feeling of fullness, colic, abdominal discomfort, severe pain and may even develop ulcers and cancers.
Glutem is a protein found in wheat, barley and rye and for that reason, individuals with this disease should avoid these foods or foods derived from them. This type of diet should accompany the sick person for life and they should be encouraged to eat homemade foods that know the origin and composition. In addition, it is necessary that these people feed on dietary fibers, such as beans, fruits, vegetables, brown rice and quinoa.
Answer:
people with celiac disease should include fiber such as beans fruits brown rice and quinoa
Home cooked meals and a good way to increase variety and reduce cost of a GF diet
Explanation:
All of the following options are examples of positive feedback EXCEPT:
a. increased strength and frequency of contractions as labor progresses
b.increased shivering and heat generation in response to cold temperatures
c. increased rate of fruit ripening in response to a gas released by nearby ripe fruit
d. increased platelet activation and recruitment to form a blood clot
Answer: The correct answer to the question is option B
INCREASED SHIVERING AND HEAT GENERATION IN RESPONSE TO COLD TEMPERATURES.
Explanation: Homeostasis is maintained by the control systems that detect and respond to changes in the internal environment, this is achieved effectively by the detector,control centre and the effector.
This dynamic process allows for the constant readjustment of many physiological variables.
Nearly all are being controlled by negative feedback mechanisms, positive feedback is much less common but important example is;
increased platelet activation and recruitment to form a blood clot and control of uterine contraction during childbirth.
The body temperature is one of the physiological variable that is controlled by negative feedback mechanism.
When the body falls below the preset level (close to 37°C), This is detected by specialised temperature sensitive nerve endings in the hypothalamus of the brain,where the body's control centre is located,the centre then activates mechanisms that raise the body temperature (the effectors). these includes;
- Stimulation of skeletal muscles causing shivering.
- Narrowing of the blood vessels in the skin reducing the blood flow to,and heat loss from the peripheries.
- Behavioural changed example; we put in more clothes to curl up.
When the body temperature rises within the normal range again,the temperature sensitive nerve endings are no longer stimulated,there signal to the hypothalamus will stop, therefore,the shivering stops too and the blood flow to the peripheries return back to normal.
This clearly explains option B which is the the correct answer of a negative feedback mechanism.
In your own words, explain the process of DNA replication. As a part of this, describe all enzymes and what they do.
The diagram shows two cells. Identify structures C, D, and E and explain how they work together to perform a specific process within the cell. Enter your answer in the space provided.
Answer:
C is the ribosome, D is the rough ER, E is the Golgi body. Ribosomes help make proteins, the rough ER makes proteins, and the Golgi body processes and delivers proteins.
Explanation:
Rough endoplasmic reticulum, or rough ER, is the term for the regions formed when these membrane-bound ribosomes coat the surface of the ER.
What is the role of endoplasmic reticulum?In both prokaryotes and eukaryotes, the translation of proteins is the main job of the ribosomes.
The big ribosomal subunit of the ribosome binds to the ER membrane and subsequently carries out protein translation there.
The Golgi complex before being delivered to their final locations, the endomembrane system is first introduced into the ER.
Different domains that are made up of sheets, tubules, and the nuclear envelope carry out the diverse ER tasks.
Therefore, C is the ribosome, D is the rough ER, E is the Golgi body.
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What type of graph or chart would best represent
the data presented in the table?
a bar graph
a line graph
a pie chart
Answer:
b. line graph
Explanation:
on edge
Answer:
b
Explanation:
What does animal cells have that plant cells don't have?
Plant cells do not have centrosome and lysosomes, but animal cells do.
What does this mean: +.90 in psychology
Answer:
Humanitarianism, compassion, and idealism
Explanation:
90 is a number of Humanitarianism, compassion, and idealism the numerology number 90 is a number of humanitarianism, compassion, and idealism. it is a number of philanthropy and tolerance.
I like cheese do yall like cheeeeseeeee
Answer: I like cheese
Explanation:
What is waste Management
A set of full-sibling juvenile wolf spiders was divided into two groups. One set was reared in low-temperature conditions, while the other set was reared in high-temperature conditions until they were adults. As adults, each individual was exposed to a predator at a moderate temperature and the groups exhibited very different escape behavior—those reared in low-temperature conditions fled sooner than those reared in high-temperature conditions. Which of the following can be concluded from these data?
a. Antipredator behavior exhibits a gene-environment interaction
b. Antipredator behavior is heritable
c. Antipredator behavior changes over time
d. There is an environmental influence on antipredator behavior
e. Genes and the environment affect antipredator behavior
Answer:
e. Genes and the environment affect antipredator behavior
Explanation:
Based on the data that was derived from the study we can conclude that Genes and the environment affect antipredator behavior. This is because regardless of the difference in the environment they were reared in both groups fled from the predator which is a genetic trait that has been passed down from generation. Yet, the group reared in low-temperature conditions fled sooner than those reared in high-temperature conditions meaning that the environment has affected the survival and antipredator behavior of the spiders.
A group or population that share the same beliefs in a god or gods, have the same sacred literature, and observe similiar rituals of their faith
kno yes i pidust aniotesu qdbaery r vs aAnswer:it
kefa oot sitc bsExplanation:it
Please help!!
how does pinocytosis work
Answer:
Is a mode of endocytosis in which small particles suspended in extracellular fluid are brought into the cell through an invagination of the cell membrane, resulting in a suspension of the particles within a small vesicle
Explanation:
Hope that helps!
Help do in ten minutes!
Answer:
gulblader stores bile
liver makes bile
found in mouth is salvatory glands
4 is pancreas
Explanation:
Please help!!!
If oxygen atoms are in low concentration outside of a cell, but the cell requires more oxygen, how will the cell move the oxygen inside the membrane?
Answer:
Simple Diffusion across the Cell (Plasma) Membrane. The structure of the lipid bilayer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down their concentration gradient, by simple diffusion.
Explanation:
Chymotrypsin, trypsin, and elastase are digestive enzymes called serine proteases. The serine proteases differ in substrate specificity. Chymotrypsin cleaves peptide bonds after aromatic or bulky hydrophobic side chains, trypsin requires basic amino acid residues, and elastase cleaves bonds following small uncharged side chains.
Which of the following amino acids have side chains that fit into the specificity pocket of chyrmotrypsin?
a. glycine
b. arginine
c. phenylalanine
d. alanine
e. aspartate
f. tyrosine
Answer:
The correct options are:
c. phenylalanine
f. tyrosine
Explanation:
The specificity of the pocket of chymotrypsin is for aromatic aminoacids o amino acids with bulky hydrophobic chains. From the list of amino acids, the aromatic amino acids are phenylalanine (with a phenyl group) and tyrosine (with a phenolic group).
From the rest, there are not amino acids with bulky hydrophobic side chains. Arginine has a 3-carbon side chain but it has a polar guanidino group, so it is not a bulky hydrophobic R-group. Alanine is hydrophobic but it is not bulky - it has only a methyl (-CH₃) group as R-group. Aspartate is not hydrophobic neither aromatic. Finally, glycine is very simple, it has only a -H as R-group.
The body system is responsible for creating new life.
Answer: yes, you are correct, but sometimes it is unable to create lives....then there is the option, of adoption.
Explanation: Men may not make enough sperm, or that sperm many not be strong ... can just happen (the same as some people might develop conditions ... to allow families who can't easily have babies to get pregnant and have families of their own. Most cases of female infertility are caused by problems with ovulation. Without ovulation, there are no eggs to be fertilized. Some signs that a woman is not ovulating normally include irregular or absent menstrual periods. Ovulation problems are often caused by polycystic ovarian syndrome (PCOS). another case is the body is just too old, and is shutting down. adoption is sometimes expensive, and has a lot of paperwork, but giving a child a family; is the best gift of all. some parents just aren't fit to take care of their child(children), so they go into foster care, and have the choice of either living on their own; or being adopted.....but in some cases, they don't have the choice, because they are too young to decide that.
A body system is a collection of parts able to work together to serve a common purpose growth, reproduction and survival.
The correct question is "The body system is responsible for creating new life" is called the reproductive system.The various part of a system depends on the other parts to perform the tasks. The various individual system works in lins with other systems to improve our chances of survival by maintaining a stable internal body environment.
Conclusively, the reproductive system is responsible for creating life. The the male and the female reproductive system differs.
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Explain the experimental results that are seen in the absence of microsomes.
Answer:
The absence of microsomes allows the synthesis of only one protein.
Explanation:
The absence of microsomes influences the production of a single protein. This protein is vulnerable to protein and it can digest it quickly. This shows that the protein does not have a double layer of membrane and therefore must be treated with substances that help it overcome this vulnerability. This protein also does not have sugars linked to nitrogen and therefore should be treated with substances that are relevant, such as endoglycosidase H.
I am writing an essay and I need help plz.
In an unstable environment where growing conditions are constantly changing, which mode of reproduction in plants provides the best chance for survival, and why?
Sexual reproduction; it increases the chance of survival by producing many genetically identical offspring.
Sexual reproduction; it increases the chance of survival by producing many genetically identical offspring.
Asexual reproduction; it increases the chance of survival by introducing little genetic variation in offspring.
Sexual reproduction; it increases the chance of survival by introducing genetic variation in offspring.
Asexual reproduction; it increases the chance of survival by producing many genetically different offspring.
Answer:
The answer is D
Explanation:
In horses, the Overo gene, Ov, produces a white splotch pattern on the coat. The overo phenotype is seen only when a horse has one Ov copy, Ovov. Horses with two Ov copies, OvOv, die soon after birth and are called white overo because they are completely white. Horses with no Ov copies are solid colored, ovov. The Leopard complex gene, Lp, shows incomplete dominance and controls white spotting. One Lp allele, Lplp, produces the leopard phenotype, in which there are spots everywhere. Two Lp alleles, LpLp, produce the fewspot phenotype, in which the horse is mostly white with colored spots. A horse that is both overo and leopard is called pintaloosa, and these horses are spotted with splotches. A horse that is overo and fewspot is considered fewspot because the white areas from Lp is indistinguishable from the white from Ov.
Suppose that 16 pairs of pintaloosa horses have one offspring per pair. How many of each phenotype would be expected? Determine the number out of 16 expected for each phenotype. Only count phenotypes for offspring expected to live past one week of age.
Number of:
Solid:____
Fewspot:_____
White Overo:______
Answer: Solid: 1 out 16;
Fewspot: 3 out 16;
White Overo: 0
Explanation: A pintaloosa horse is a horse which has genotype LplpOvov, i.e., it is heterozygous for overo and leopard.
Using a Punnett's square, a pair of pintaloosas can produce the following possibilities of offsprings:
Overo genotypeOv ov
Ov OvOv Ovov
ov Ovov ovov
Leopard genotypeLp lp
Lp LpLp Lplp
lp Lplp lplp
The expected phenotype for:
Solid is related to the Overo gene and its genotype is ovov, so from the Punnett's square, the possibility for a offspring is 1 out of 16;Fewspot is related to both Overo and Leopard gene. A fewspot horse is both Ovov and LpLp, so the number is 3 out of 16;White Overo is related to the Overo gene and these offspring dies at birth. Since it is asking for the number of ofspring to live past one week of age, there will 0 white overos;The number of solid overo is 2, fewspot is 3 and white Overo is 0
The question above is incomplete. The complete question is given below:
In horses, the Overo gene, Ov, produces a white splotch pattern on the coat. The overo phenotype is seen only when a horse has one Ov copy, Ovov. Horses with two Ov copies, OvOv, die soon after birth are called white overo because they are completely white. Horses with no Ov copies are solid colored, ovov.
The Leopard complex gene, Lp, shows incomplete dominance and controls white spotting. One Lp allele, Lplp, produces the leopard phenotype, in which there are spots everywhere. Two Lp alleles, LpLp, produce the fewspot phenotype, in which the horse is mostly white with colored spots.
A horse that is both overo and leopard is called pintaloosa, and these horses are spotted with splotches. A horse that is overo and fewspot is considered fewspot because the white areas from Lp is indistinguishable from the white from Ov.
Suppose that 16 pairs of pintaloosa horses have one offpring per pair. How many each phenotype would be expected? Determine the number out of 16 expected for each phenotype. Only count phenotypes of offspring expected to live past one week of age. overo: white overo: fewspot:
The solution is given below:
It is very clear from the complete question that the number of:
Solid is 2
Fewspot is 3
White Overo is 0
What is a pintaloosa?
A pintaloosa is a type of horse which is produced from the breeding between overo and leopard.
So from the parameters given in the question, 2 different individuals possess genotype for overo (Ovov) phenotype.
This goes to say that just only out of the 16 pair will have an overo phenotype.
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28. How are sexual reproduction and asexual reproduction different?
a. Sexual reproduction produces offspring identical to the parents, but asexua
reproduction produces offspring with traits from both parents
b. Asexual reproduction produces offspring identical to the parents, but sexual
reproduction produces offspring with traits from both parents
c. Sexual reproduction only occurs in multicellular organisms, but asexual
reproduction only occurs in unicellular organisms
O
d. Asexual reproduction only occurs in multicellular organisms, but sexual
reproduction only occurs in unicellular organisms
Answer:
B. Asexual reproduction produces offspring identical to the parents, but sexual
reproduction produces offspring with traits from both parents
Answer:
B.Asexual reproduction produces offspring identical to the parents, but sexual reproduction produces offspring with traits from both parents.
Explanation:
I just did a test on it.
{Hope this helps} : )
Consider this animal cell.
The organelles in an animal cell are labeled. Part G is a bean-shaped structure with folding inside.
Which organelles are labeled G?
centrioles
lysosomes
ribosomes
mitochondria
Answer:
Mitochondria
Explanation:
Answer:
d mitocondria
Explanation: