Answer: ?
Explanation:
Which of the following organelles houses DNA in eukaryotic cells?
Question 12 options:
Nucleus
Mitochondria
Golgi apparatus
Endoplasmic reticulum
Answer:
The nucleus
Explanation:
The nucleus is the most conspicuous organelle found in a eukaryotic cell. It houses the cell's chromosomes and is the place where almost all DNA replication and RNA synthesis occurs. The nucleus is spheroid in shape and separated from the cytoplasm by a membrane called the nuclear envelope.
¿Cuáles son los factores biológicos o vivos que afectan a un ecosistema?
Answer:
true
it have later than 1234567
Answer:
Translate
Explanation:
Question 9
Which is a negative impact of destroying the rainforests?
The Animals woud be hurt
Explanation:
The environment would be bad to be destroyed for the animals in the rainforest.
when does crossing over occur? how many chromatids are involved? how many homologous chromosomes?
Answer:
The normal human karyotype is made up of 46 chromosomes: ... The 2 sister chromatids are linked mainly by a paracentric heterochromatin ...
Explanation:
What is happening to the chromosomes in this phase of mitosis?
Answer: The answer is A
During mitosis (nuclear division), the chromosomes condense, the nuclear envelope of most cells breaks down, the cytoskeleton reorganizes to form the mitotic spindle, and the chromosomes move to opposite poles. Chromosome segregation is then usually followed by cell division (cytokinesis).
Summarize active transport In your answer consider the direction of transport and any external
energy or special structures that are needed in the process .
Answer:
an area of lower concentration to an area of higher concentration.
ATP
Primary active transport directly uses a source of chemical energy (e.g., ATP) to move molecules across a membrane against their gradient.
the uptake of glucose in the intestines in humans and the uptake of mineral ions into root hair cells of plant
membrane pumps (such as the sodium-potassium pump) and vesicle transport.
Primary Active Transport.
The Cycle of the Sodium-Potassium Pump.
Generation of a Membrane Potential from the Sodium-Potassium Pump.
Secondary Active Transport.
Sodium Potassium Pump.
Endocytosis.
Exocytosis.
Active Transport.
Explanation:
Moving substances across a cell membrane against their concentration gradient, from an area of lower concentration to a region of greater concentration, is a process known as active transport in cells.
Thus, Active transport uses external energy—typically in the form of ATP (adenosine triphosphate)—to move materials against the concentration gradient as opposed to passive transport, which depends on the natural movement of particles.
Active transport involves the movement of materials across the cell membrane by means of specific membrane proteins called carrier proteins or pumps.
Thus, Moving substances across a cell membrane against their concentration gradient, from an area of lower concentration to a region of greater concentration, is a process known as active transport in cells.
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In single celled organisms what are the materials primarily stored in?
Answer:
In single-celled organisms, materials are stored primarily in. ribosomes.
Mistletoe is a plant that lives on the branches of trees. The mistletoe plant sends its roots in through the bark of trees and takes away water and minerals that the tree needs.
Explanation:
viruses are not considered living organisms because they are not composed of:
Answer:
Viruses are not living things. Viruses are complicated assemblies of molecules, including proteins, nucleic acids, lipids, and carbohydrates, but on their own they can do nothing until they enter a living cell. Without cells, viruses would not be able to multiply. Therefore, viruses are not living things
Explanation:
Answer:Viruses are not living things. Viruses are complicated assemblies of molecules, including proteins, nucleic acids, lipids, and carbohydrates, but on their own they can do nothing until they enter a living cell. Without cells, viruses would not be able to multiply. Therefore, viruses are not living things.
how does your body acquire the oxygen the cells in your body need to function?
Answer:
You take in oxygen and it goes to your lungs. It spreads through your body, going through your bloodstream, and going to your heart. The excess oxygen turns into carbon dioxide leaves through your mouth. When it leaves, the plants take the carbon dioxide and turn it back into oxygen, and repeating this process.
(I'm pretty sure this is the answer. Hope it helps:)
Inside the air sacs, oxygen moves across paper-thin walls to tiny blood vessels called capillaries and into your blood. A protein called haemoglobin in the red blood cells then carries the oxygen around your body.
What are the functions of hemoglobin?Hemoglobin is a protein in your red blood cells that carries oxygen to your body's organs and tissues and transports carbon dioxide from your organs and tissues back to your lungs.
Hemoglobin, abbreviated Hb or Hgb, is the iron-containing oxygen-transport metalloprotein present in red blood cells of almost all vertebrates as well as the tissues of some invertebrates. Hemoglobin in blood carries oxygen from the respiratory organs to the rest of the body.
Hemoglobin is essential for transferring oxygen in your blood from the lungs to the tissues. Myoglobin, in muscle cells, accepts, stores, transports and releases oxygen.
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the exchange of gases within the cells of the body is known as
Explanation:
The exchange of gases between the blood and tissue cells is internal respiration. Finally, the cells utilize the oxygen for their specific activities: this is called cellular metabolism, or cellular respiration. Together, these activities constitute respiration.
"Good science" is based on evidence, and results are able to be repeated. *
True
False
Answer:true
Explanation:
What is the charge for all of the elements in Group 1?
Which equation best models cellular respiration? (1 point)
o 6H20 + 6CO2- C6H12O6 + 602 + Energy
O C6H12O6 + 602 6H20 + 6CO2 + Energy
O 6H20 + 6CO2 + Energy – C6H12O6 + 602
O C6H12O6 + 602 +6CO2-6H20 + Energy
The equation best models cellular respiration is: C6H12O6 + 602 = 6H20 + 6CO2 + Energy
CELLULAR RESPIRATION:
Cellular respiration is the process by which living organisms obtain energy by breaking down food molecules.Cellular respiration can occur in the presence of oxygen (aerobic) and this combines glucose molecule to form carbon dioxide (CO2) and water (H2O) and release energy for use. The general equation for cellular respiration is as follows:C6H12O6 + 602 = 6H20 + 6CO2 + Energy
Therefore, the equation best models cellular respiration is: C6H12O6 + 602 = 6H20 + 6CO2 + Energy (ATP).Learn more at: https://brainly.com/question/13721588?referrer=searchResults
Answer:
For connexus students: Cell Work Unit Test
Explanation:
1. 12
2. Chlorophyll breaks down because there's less sunlight.
3. The Calvin-Cycle is light independent (does not need sunlight)
4. light
5. C6 H12 O6 + 6O2 + 6H2O + energy
6. Pyruvic Acid+ NADH --> Lactic Acid+ NAD+
7. Acetyl-CoA joins with a large molecule called oxaloacetic acid
8.Electrolosis
9. ATP
10. Krebs Cycle
11. Oxygen
12. 12
13. Ectotherms cannot insulate- and can only control their body temperature by choice.
14. Shivering
Hi, I learned that an Knight anole is a invasive species in Florida. There is one on my humming bird feeder. Is it alright to leave it alone and let it drink the honey or are they too much of a threat to Florida?
Answer:
they pose a serious threat to the diversity of native lizards and birds.
Explanation:
what forms after the glycosidic linkage reaction between glucose and galactose is complete
What forms after the glycosidic linkage reaction between glucose and galactose is complete would be lactose.
Glucose and galactose are known as simple sugars or monosaccharides. Monosaccharides can combine together to form disaccharides or even polysaccharides.The combination of monosaccharides to form di or polysaccharides happens by a process known as condensation reaction.The condensation reaction results in the formation of glycosidic linkage or bond and elimination of water moleculesGlycosidic bond is a type of covalent bond th joins one sugar molecule to another sugar or non sugar molecule.Thus, lactose is a dissacharide consisting of one glucose and one galactose unit which combine together by condensation and formation of glycosidic bond with elimination of water.
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Answer:
Water and lactose.
Explanation:
Glucose and galactose combine via glycoside linkage, forming lactose and water. Lactose is a sugar mostly found in milk.
Select the statement that is true.
A. DNA has the sugar deoxyribose, while RNA has the sugar ribose
B. Thymine is only present in DNA, while cytosine is only present in RNA
C. DNA and RNA are both double-stranded
D. Translation copies DNA to mRNA, while transcription coverts mRNA into proteins
Answer:
C. DNA and RNA are both double-stranded
Explanation:
This is the only one that is true.
During the winter, a homeowner places a heavy cloth curtain across the stairwell leading upstairs from the main rooms. Which is the best explanation of the reason she does this?
A.
She wishes to place a radiating surface across the stairwell to help keep the area warm.
B.
She wishes to prevent the stairwell walls from drawing thermal energy away from downstairs by conduction.
C.
She wishes to keep hot air from downstairs from flowing up the stairwell by convection.
D.
She wishes to keep hot air from upstairs from flowing down the stairwell by convection.
Answer:
D.
She wishes to keep hot air from upstairs from flowing down the stairwell by convection
what kind of enzyme adds a phosphate group to another protein?
Answer:
kinase
Explanation:
is the correct answer
PLEASE HELP DUE TODAY NO LINKS WILL REPORT AND IF COULD ADD EXPLANATION THAT WOULD HELP
Answer:
24 sq meters
Explanation:
4 times 6 is 24
Answer: Try 24m^2 so just type in answer box “2”
Explanation:
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Which statement is a hypothesis that would best address the question "Are rainbow trout eating all the macroinvertebrates in streams and starving out other fish species?" If rainbow trout are eating all the macroinvertebrates, then keeping rainbow trout out of new river habitats will allow native species to recover. If rainbow trout are eating all the macroinvertebrates, then introducing them to other streams will help native species recover. Rainbow trout will eat a variety of macroinvertebrates and native fish species. Rainbow trout hunt and prey upon native fish species.
A possible hypothesis here is; "If rainbow trout are eating all the macroinvertebrates, then keeping rainbow trout out of new river habitats will allow native species to recover."
A hypothesis is a statement that is tentatively put forward to explain an observation. Usually, a hypothesis is an if .... then statement. This is one of the first things that we must look out for when considering each of the statements.
Since we have observed that rainbow trout eating all the macroinvertebrates in streams and starving out other fish species, it follows that keeping rainbow trout out of new river habitats will allow native species to recover."
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hazards to humans that come into contact with it,
4. Study the graphs in the stimulus. Order the events that occurred at the Bodega Bay study
site, where scientists used traps to catch and count samples of marine organisms, from
1to 5. Write a 1 by the first event to occur and a 5 by the last event.
5 The number of native clams per sample falls from 100 to 10.
1 Scientists find European Green Crabs in Bodega Bay.
4 Scientists find that the number of native clams per sample has risen to 40.
3 The number of native shore crabs per sample falls from 25 to 20.
2 The number of European Green Crabs per sample falls from 5 to 4.
The light-dependent reaction should happen before the Calvin cycle because ________.
Select one:
a. its products are important to the fixation of carbon dioxide.
b. plants are more active during the day than at night.
c. photosynthesis happens faster when there is sunlight.
d. more products are produced during the day than at night.
how would you modify the hypothesis and repeat the experiment for improved or more complete results
Answer:
you could try to do another experiment that would be the obvious and the simple solution.
Design a controlled experiment to determine the effect of hot, dry air on head lice. In your experimental design, be sure to:
• state the hypothesis to be tested in the experiment [1]
• state one way the control group will be treated differently from the experimental group [1]
• state one result of the experiment that would support the hypothesis [1]
An experiment is carried out to answer a question. The hypothesis predicts what is expected to occur. Experimental and control groups are compared to analyze the results, supporting or not the hypothesis.
-----------------------------------------
BACKGROUND
When people are infested with head lice, it is recommended to wash their cloth and dry it with hot air over 53 or 54ºC for 5-30 minutes.
Head lice and eggs seem to die when exposed to those conditions by getting dehydrated.
SITUATION
We will assume that we work in a primary school and that students from the 3rth grade are being affected by this parasite.
We want to know if applying hot air to these students before entering the class will make a difference and help to control this problem.
So, we will propose an experiment to answer this question.
HYPOTHESIS
A hypothesis is a conjecture. A researcher hypothesizes to predict what is going on or what is expected to occur. The hypothesis is a claim of how it works a relation between two or more variables. Usually, it is written in the present time.
Hypothesis ⇒ Applying hot air to students' heads kills the head lice that students are carrying.
To evaluate the effect of hot air, we need to keep control of as many other variables as possible.
To do so, we asked students' families not to use other treatments on students' heads and to bathe them daily.
In this way, we were sure that all students
were equally affected by the parasite, took showers every day, and neither was using any other product that could affect the results.Our population was the 3rth grade students ⇒ 64 children ⇒ 30 girls + 34 boys.
Before the experiment, we separated the 3rth grade into two groups.
Group A ⇒ 32 students ⇒ 15 girls + 17 boys ⇒ Experimental groupGroup B ⇒ 32 students ⇒ 15 girls + 17 boys ⇒ Control group
→ Treatment
Each student from group A received hot air every day for one week before entering the class.
Hot air was 53ºC and was applied for 5 minutes.
→ Control
Each student from group B did not receive the treatment for one week before entering the class.
CONTROL GROUP
The control group is used to identify any other factors influencing the results obtained in the study, apart from the modified variables of the treatment.
Individuals of the control group are selected from the same population as the treatment group.
*** These two groups are identical in all aspects except for the independent variable, which changes in the treatment group but remains constant in the control group. ***
The control group is Group B. The only difference between the control and the experimental group is that the first one did not receive the treatment. Every other aspect was equal for both groups.
The only way the control group was treated differently from the experimental group was that the control group did not received the treatment, while the experimental group did.
RESULTS
After one week, groups were compared to see if the hot air was effective in killing head lice.
When comparing the control and the experimental group, we could see that students from group A were free of parasites.
Students from group B were still affected by the head lice.
CONCLUSION
The results support the hypothesis. Hot air turned to be a great treatment for lice control.
-------------------------------------------
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Critical Thinking When lipid is added to a solution of a detergent in water, the detergent breaks
up large globules of the lipid into much smaller globules. What effect do you think a detergent would
have on the integrity of cells? Explain your answer.
Answer: The cell would break apart.
Explanation:
Because Detergent breaks apart lipids, it would destroy the phospholipid bilayer, causing the whole cell to fall apart.
which area of the brain is responsible for many of our circadian rhythms including sleep?
Answer:
Hypothalamus
Explanation:
It is found in the forebrain
All organisms interact with and depend upon each other and their environment to satisfy their basic needs. Relationships between organisms include predation, competition, and symbiosis. Consider the food web. Select ALL of the relationships that exhibit competition for resources.
Answer:
Explanation:
Relationships in the food web that show competition for resources include:
Herbivores competing for producers. Carnivores competing for herbivores. Carnivores competing for other carnivores. What are some examples of competition in the food web?Competition in the food web involves organisms of different species trying to use the same resource.
A herbivore such as a cow competing with another herbivore such as a goat, to eat grass (producer) shows competition.
Leopards and Cheetahs competing for a rabbit shows carnivores competing for herbivores.
Then carnivores and omnivores such as lions and humans can compete for other carnivores as well such as jackals.
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Compare and contrast Eubacteria and Archaebacteria.
Answer:
Archaea is a single-celled bacterium that thrives in severe circumstances, whereas Eubacteria lives and flourishes in normal settings. Archaea is the earliest bacterial species yet discovered, dating back to the formation of the world.
PLEASE HELP WITH THESE QUESTIONS!!! ALSO NO LINKS PLEASE THEY DONT LET ME VIEW THEM!!!
1. Which choice shows functions of proteins in living organisms?
A.) Store the genetic code and give support
B.) Structure and support
C.) Immediate and stored energy
D.) Store energy and the genetic code
2. Which choice best describes a long chain of amino acids?
A.) Polypeptide
B.) Peptide
C.) Nucleic acid
D.) Disaccharide
3. What could cause a change in the shape of a red blood cell that would affect its function?
A.) A change in the quaternary structure of the protein hemoglobin
B.) A change in the primary structure of the protein hemoglobin
C.) A change in the secondary structure of the protein hemoglobin
D.) A change in the tertiary structure of the protein hemoglobin
Answer:
1.C. 2.A. 3.B
Explanation:
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Proteins help Store energy and the genetic code. The long chain of amino acids describes the long chain of polypeptides.
What is protein?
Proteins are among the most prevalent organic molecules in biological systems and have a much wider range of structural and functional variations. Many thousands of proteins, each serving a different purpose, can be found in a single cell.
All proteins are composed of one or more chains of amino acids, despite the fact that their structures and activities differ substantially from one another.
In biological reactions, enzymes function as catalysts, accelerating the reactions. Each enzyme may distinguish between one or more substrates, or the molecules that act as the catalysts for the reactions they catalyze.
Therefore, Proteins help Store energy and the genetic code. The long chain of amino acids describes the long chain of polypeptides.
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The volume (V) of a cylinder can be determined by using the formula
V = ar?h,
where r = the radius of the base, and h = the height of the cylinder. What is the result
of solving this equation for r?
Answer:
Explanation:
To solve for r, simply means to isolate the variable:
[tex]V = pi*r^2*h\\[/tex]
The inverse of multiplication is division, so divide both sides by pi and h
[tex]\frac{V}{pi*h} = r^2[/tex]
[tex]r = \sqrt\frac{V}{pi*h}[/tex]