fluidity of an animal cell plasma membrane is enhanced by __________.

Answers

Answer 1

Answer:

Cholesterol molecules

Explanation:

Answer 2

Several factors increase the fluidity of the plasma membrane in animal cells.

First, by creating kinks in the lipid structure, the unsaturated fatty acids in the phospholipids that make up the membrane improve fluidity. Additionally, cholesterol contributes to the preservation of membrane fluidity. As a buffer, it reduces fluidity at high temperatures and prevents solidification at low temperatures. The actual temperature also has an effect on how fluid the membrane is at higher temperatures, the phospholipids move and flow more freely. Last but not least, the ratio of different phospholipids and their saturation levels can have an effect on the fluidity of the membrane.

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Related Questions

Circle the letter of each sentence that is true about carbohydrates.
a. Starches and sugars are examples of carbohydrates.
b. Living things use them as their main source of energy.
c. The monomers in sugar polymers are starch molecules.
d. Plants and some animals use them for strength and rigidity.

Answers

A, b , and c are true. The monomer of sugar polymers is monosaccharides

Why are there holes in the ends of phloem tubes?

Answers

There are holes in the end of the phloem tubes because Phloem consists of sieve tube cells and companion cells for conduction of food These sieve elements are placed end to end . At the the junction of two sieve elements there is a plate called sieve plates having circular pores.

opening and closing of the heart valves is caused by

Answers

Answer:

The pressure differences on either side of the valve.

Explanation:

The heart valves open and close passively because of pressure differences on either side of the valve. When pressure is greater behind the valve, the leaflets are blown open and the blood flows through the valve. However, when pressure is greater in front of the valve, the leaflets snap shut and blood flow is stopped.

Hope this helps!

have a blessed day

i need answer please​

Answers

Explanation:

the correct answer is what you have selected.

hope this helps you.

A plastic doll has a mass of 245 grams. It was placed into a graduated cylinder with 100 mL in it. The water rose to 215 ml. What is the little plastic dolls density? Show all work and units.

help
if you don't help my face will be a sad face forever

Answers

I don’t know either sorry

Please label the cells I fell like I’m not right

Answers

Answer:

Phospholipids    B

Transport Protein A

Explanation:

Cell Biology:
1. Which cell is more sophisticated: prokaryotic or eukaryotic?
2. Give one characteristics you could use to determine whether a cell is prokaryotic or eukaryotic.
3. Give two characteristics you could use to determine whether a cell is a plant or animal cell.
4. Explain the function of mitochondria.
5. Give the name of the organelle that manages or controls all the cell functions in a eukaryotic cell.

Answers

Answer:

1. eukaryotic

2. if it's a single cell organism it's prokaryotic, if it's multicellular it's eukaryotic

3. a plant cell will have chlorophyll and cell walls, animal cells lack cell walls and chlorophyll

4. the mitochondria creates energy for the cell through ATP

5. Nucleus

Answer:

Explanation:

1. Which cell is more sophisticated: prokaryotic or eukaryotic?

Eukaryotic Cells are more sophisticated because of multiple factors. One such factor is the fact that Eukaryotic Cells have a nucleus that houses the DNA while the DNA of Prokaryotic Cells are in the cytoplasm. Eukaryotic Cells also have organelles that carry out a variety of functions (Mitochondria, Ribosomes, Endoplasmic Reticulum) whereas Prokaryotic Cells have only the basic organelles (in most cases only Ribosomes).

2. Give one characteristic you could use to determine whether a cell is prokaryotic or eukaryotic.

The presence of a Nucleus. Prokaryotic cells don't have a nucleus, while Eukaryotic Cells do.

3. Give two characteristics you could use to determine whether a cell is a plant or animal cell.

The presence of a central vacuole (plant cells have a central vacuole but animal cells do not).The presence of a cell wall (plant cells have a cell wall but animal cells do not).

4. Explain the function of mitochondria.

The mitochondria are considered the 'powerhouse' of the cell. This is because it is the site of most of the respiratory process which produces energy for the cell in the form of ATP.

5. Give the name of the organelle that manages or controls all the cell functions in a eukaryotic cell.

The Nucleus is considered the 'brain' of the cell because it directs all of the cell's functions.

                                                      (photos by Expii and BioNinja respectively)

Why was the 1mL of experimental culture medium that was removed each day replaced by 1mL of sterile culture medium?

Answers

Answer:

A sample of a specific species of microorganism was added to 100 mL of a liquid culture medium. ... The 1 mL of experimental culture medium was replaced by 1 mL of new sterile culture medium to maintain a constant volume.

A sustainable society is based on which of the following?

increasing wilderness areas

demand for resources

zero pollution

conservation of resources

Answers

Answer:

I think it would be conservation of resources.

conserving of resources

Number 1
HELP ME I WASNT IN CLASS:(

Answers

Answer:

according to me it's a. 1 to 6 inches

but not 100% sure

Answer:

A.

Explanation:

Tectonic plate move so E is incorrect

If the tectonic plate move 1 mile we would create another Pangea so d is incorrect

The tectonic will not move 6 feet or 2 feet in a year so A is the only choice

Hope this helps

An enzyme is a protein that

Answers

Answer:

?

Explanation:

need the rest of the question

Using your own words explain how the process of
Cellular Respiration occurs (hint - what must go in
and what is created?)

Answers

Answer:

During cellular respiration, a glucose molecule is gradually broken down into carbon dioxide and water.

Explanation:

Which skills are needed to read and understand maps? Check all that apply.

the ability to know each location shown on a map
the ability to know what kind of map you are reading
the ability to use a compass or other navigational tool
the ability to think about how a map can be interpreted
the ability to know how to read different parts of a map
the ability to name many different places around the world

Answers

Answer:

You need to know all of the things listed. By knowing all of these it will make it easier to read and understand maps.

Explanation:

Would you expect an ecosystem that had not been disturbed for 20 years to remain the same? Explain why or why not.

Answers

Yes because here’s no causes for need of change

changes that occur in girls only in adolescence​

Answers

-Body Hair.


The girl's body shape will also begin to change. There may be an increase not only in height and weight, but the hips may get wider as well. There may also be an increase in fat in the buttocks, legs, and stomach. These are normal changes that may happen during puberty.

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A dentist wants to know whether posters of calming nature scenes will reduce patient anxiety. Which of these is the most important Confounding Variable in this experiment?

a) the age of the patient
b) a reduction of anxiety
c) how crowded the waiting room becomes
d) both a and c

Answers

Answer:

d

Explanation:

The most important confounding variable in this experiment is d) both a and c.

Confounding variables are factors that are not directly controlled or manipulated by the experimenter but can influence the relationship between the independent variable (calming nature scenes) and the dependent variable (patient anxiety). They can introduce alternative explanations for the observed results.

In this experiment, the age of the patient (variable a) and how crowded the waiting room becomes (variable c) are both potential confounding variables. Here's why:

a) The age of the patient: Different age groups may respond differently to calming nature scenes. For example, younger patients might have different levels of anxiety compared to older patients. Age-related factors such as life experiences, previous dental visits, or personal preferences may influence anxiety levels and responses to the nature scenes. If the age distribution is not controlled or accounted for, it could confound the relationship between the nature scenes and anxiety reduction.

c) How crowded the waiting room becomes: The level of crowding in the waiting room can create a different environment and affect patient anxiety levels. A crowded waiting room may increase anxiety due to the lack of personal space or increased social interactions. On the other hand, a less crowded waiting room might provide a more relaxed environment. If the level of crowding is not controlled or accounted for, it could confound the relationship between the nature scenes and anxiety reduction.

Considering both variables a and c as potential confounding variables is important to ensure that any observed effects of the calming nature scenes on patient anxiety are not solely attributed to age or waiting room crowding. Controlling for these variables or including them as factors in the experimental design or analysis can help isolate the true effect of the nature scenes on anxiety reduction.

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a machine called os used for both harvesting and threshing

Answers

It’s called a combine harvester.

The p53 gene in mammalian cells is known to stop the cell cycle in response to damaged DNA. If this gene is damaged without repair, which of the following is most likely to occur

Answers

Answer:

very tuff

Explanation:

sorry! I wish I could help this is very forestraiting

(WILL GIVE BRAINLIEST) A doctor's patients complain less about their acid reflux symptoms after taking Prilosec for 4 weeks. What is the Independent Variable? What is the Dependent Variable?


a) the severity of symptoms

b) Prilosec

c) the amount of complaints about symptoms

Answers

B it’s the correct answer

The hydroxyl group can make the molecules it is attached to

Answers

Answer:

hydrogen bonding

Explanation:

Step by step

Urea, a waste product of cells, diffuses out of cells and into the blood for excretion by the______________​

Answers

The answer is liver....

Urea, a waste product of cells, diffuses out of cells and into the blood for excretion by the liver.

What is liver and its function?

The liver is a very important organ of human body and the weight of liver is 1.5 kg and width of liver is 15 cm. The colour of liver has been reddish - brown. Urea, a waste product of cells, diffuses out of cells and into the blood for excretion by the liver. The main functions of liver are it carries out the function of protein's metabolism and it excretes bile and it is also responsible for excreting cholesterol, hormones, bilirubin and drugs.

The liver also stores vitamins, glycogen, and minerals so it the center of storage also. As liver is a very important organ so to maintain it's health a person have to maintain a healthy weight, take a balanced diet, regular exercise, avoiding toxins, and  less use of alcohol leads to keep the liver safe and healthy.

Therefore, Urea, a waste product of cells, diffuses out of cells and into the blood for excretion by the liver.

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what is the difference between a dietitian and a nutritionist

Answers

Answer:

Nutritionists deal with general dietary goals and habits, as opposed to dietitians, who are certified to diagnose eating disorders and develop diets to address particular medical problems. Schools, hospitals, cafeterias, long-term care institutions, and sporting groups all hire nutritionists.

What determines the climate of a location?

Altitude and latitude
Precipitation
Bodies of water
All of the above

Answers

It’s B. Ik it’s not much of an explanation but i promise it’s right

Altitude and latitude, Precipitation, and Bodies of water determine the climate of a location. The correct option is D.

What is climate?

Climate is the average weather over a longer length of time in a particular place. A description of a climate includes details such as the typical temperature in each season, the amount of rainfall, and the amount of sunshine.

Additionally, the (probability of) extremes is frequently described. Despite the fact that there are other interrelated factors that affect weather, the four primary one are solar radiation, the quantity of which varies with latitude.

Orbital distance from the sun, and Earth's tilt, as well as temperature, air pressure, and the presence of water. The Sun and human activity are two external influences that interact with these as well as one another.

Therefore, the correct option is D, All of the above.

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What is the difference between a hypothesis, a theory and a law in science?

Answers

A hypothesis is an idea or hunch someone has a theory basically the answer to solve a question

how do the nucleus and ribosomes work together to generate a protein?

Answers

Answer:

In the nucleus, an mRNA copy of a gene is produced, which ribosomes use as instructions to synthesize a specific protein.

What does the term organelle mean, literally?

Answers

Answer:

it literally means :

any of a number of organized or specialized structures within a living cell.

Explanation:

GOo-GlE said so

What is not a key fluid or molecule that excretion balances?
Nitrogenous waste
Water
Salt
Lymph

Answers

Lymph is not a key fluid or molecule that excretion balances

All the following statements can be concluded from the law of conservation of matter except?

A. We can’t throw everything away because there is “no away”
B. Eventually we will rent out of matter if we keep consuming it.
C. There will always be pollution of some sort.
D. Everything must go somewhere.

Answers

Answer:

D

Explanation:

what behaviors would you expect the catfish to exhibit at 7 degrees c ?

Answers

Catfish travel where the food is, whether that's shuffling along on a riverbed or skimming the water's surface looking for larger prey. Wild catfish have very diverse feeding behaviors, with some remaining strict scavengers and others preferring to swallow large fish and other prey whole.





Please mark me as a brainliest

one of the most common energy sources used by bacteria is glucose. why is glucose such a good source of energy for bacteria?

Answers

Explanation:one of the most common energy sources used by bacteria is glucose. why is glucose such a good source of energy for bacteria?

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