Cell size and shape are important factors in determining the rate of diffusion. Think about cells with specialized functions, such as epithelial cells that line the small intestine or plant root hairs. What is the function of these cells? Sketch the shape of these cells. How does the shape of these cells relate to their function?

Answers

Answer 1

Answer:

Epithelial cells are the protective cells. They form the outer covering of the body surface which protects the body from any external danger.Cuboidal epithelial cells, as their name suggests, are shaped like cubes. These are typically found in tissues that secrete or absorb substances, such as in the kidneys and glands. Columnar epithelial cells are long and thin, like columns. These are usually found in places that secrete mucus such as the stomach.


Related Questions

When two species are forced to interact in a particular environment, how would
relationships of competition, predation, and mutualism affect the two populations?

Answers

Answer:

Find the explanation below.

Explanation:

When two species find themselves in the same environment, the quest for survival would lead to interactions among themselves.

Competition would result when there are limited resources. For example, when Tigers and Lions who feed on the same prey exist together in an environment, a competitive relationship can result.

Predation is a sort of interaction where an organism feeds on a prey to survive. Here, the weaker animal/species stands the risk of being defeated in the battle for survival. For example, in some homes where cats and rats exist, the cats tend to prey on the rats.

Mutualism is a form of symbiotic relationship where the animals exist together in a cooperative manner. Most fungal species have been found to have a mutualistic relationship with the roots of plants. Each of these two is important to each other's survival.

How long does it take for a jellyfish to reproduce

Answers

Answer:

A jellyfish might spend one year as a medusa, but it can spend several years in the polyp stage. Polyps are stationary and reproduce asexually. The method of reproduction used by jellyfish polyps is known as budding, and it does look like a plant growing a new bud for a flower.

A famous celebrity has an extreme security system for their estate. The security system includes sensors in the ground as well as on the sides of the buildings. A loud truck drives down the road entering the estate. There is a sensor in the ground and another on the side of the security guard’s shed. If both sensors are 100m from the truck, which sensor will pick up the noise of the truck first and why?

A.
Guard Shed - The sensor on the security guard’s shed will detect the sound first because the sound is traveling through the air and sound will travel fastest through a gas.

B.
Ground - The sensor in the ground will detect the sound first because the sound is traveling through the dirt and sound will travel fastest through a solid.

C.
Same time - Because the sound is traveling through both the ground and the air at the same time, it will reach both the shed and the ground sensor at the same time.

D.
Neither sensor - 100m is too far for the sound to travel. Neither sensor will pick up the sound of the truck until it is closer to them.

Answers

Answer:

B. Ground - The sensor in the ground will detect the sound first because the sound is traveling through the dirt and sound will travel fastest through a solid.

Explanation:

Sound wave is an example of mechanical wave, which means sound waves require a medium to travel through. However, how fast a sound travels is dependent on the kind of medium it travels through. Sound travels fastest via a SOLID medium, then liquid and slowest through gases.

According to this question, sensor in the ground and side of the security guard’s shed were placed in an estate owned by a famous celebrity. A loud truck, then, drives down the road entering the estate.

Based on the principles of sound eaves movement, the sound from the truck will be picked by the sensors in the GROUND first because the sound is traveling through the dirt and sound will travel fastest through a solid.

write one sentence using both words in the pair.
Taiga, swamp

Answers

Answer:

I went to visit a Taiga, which can sometimes be like a swamp.

it is very cold in taiga biomes unlike in hot and humid swamps

What supports, protects and maintains the shape of the cell? *Very rigid. *
A .golgi apparatus
B. cytoplasm
C. endoplasmic reticulum
D. cell wall

Answers

Answer: D. the Cell wall

Explanation: The cell wall provides structural support and protection. Pores in the cell wall allow water and nutrients to move into and out of the cell. The cell wall also prevents the plant cell from bursting when water enters the cell.

Also it is also a ridged layer found outside of the cell membrane

I believe the answer is D

the prefix ad placed in front of a word means what

Answers

Answer:

a prefix occurring in loanwords from Latin, where it meant “toward” and indicated direction, tendency, or addition: adjoin.

Taxonomists try to group organisms based on?
A. Size
B. Evolutionary relationships
C. Physical appearance
D. Ecological niche

Answers

Answer:

B) Evolutionary relationships

Explanation:

While I don't believe in Evolutionary relationships, taxonomists group organisms based on Evolutionary relationships

It can be more than one

Answers

Answer:

Only the matter stored in body tissues

Explanation:

Cuz the seal took some of the matter for itself :)

does breast cancer occur in men? what are the signs and symptoms?

actually anatomy & physiology

Answers

Answer:

Yes

Explanation:

Breast cancer can occur in men. Symptoms can include a hard lump in the breast area, nipple discharge, the nipple turning inwards, and/or a rash around the nipple.

I have never heard dog and Brest in the same sentence till now

The small intestine exchanges nutrients to help maintain homeostasis. Through the process of digestion, food is broken down into smaller pieces. Sugar is a molecule that supplies our cells with energy. Sugar is a large molecule and is transported through carrier proteins. Sugar molecules are often transported into the bloodstream even when the concentration of glucose is higher in the bloodstream than in the intestine. Based on this scenario, is the transport of glucose accomplished through osmosis, diffusion, or active transport?

Answers

Answer:

Diffusion

Explanation:

The sugar is spreading to various places within the body and is trying to make one place less concentrated.

Based on the given scenario,the transport of glucose is  accomplished through diffusion.

What is diffusion?

Diffusion is defined as the process of movement of molecules which takes place under concentration gradient. It helps in movement of substances in and out from the cell.The molecules move from lower concentration region to a higher concentration region till the concentration becomes equal.

There are 2 main types of diffusion:

1) simple diffusion-process in which substances move through a semi-permeable membrane without the aid of transport proteins.

2) facilitated diffusion- It is a passive movement of molecules across cell membrane from higher concentration region to lower concentration.

There are 2 types of facilitated diffusion one is osmosis and dialysis.

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the difference between prokaryotic and eukaryotic gene regulation

Answers

Answer:

READ THIS

Explanation:

To understand how gene expression is regulated, we must first understand how a gene codes for a functional protein in a cell. The process occurs in both prokaryotic and eukaryotic cells, just in slightly different manners.

Prokaryotic organisms are single-celled organisms that lack a cell nucleus, and their DNA therefore floats freely in the cell cytoplasm. To synthesize a protein, the processes of transcription and translation occur almost simultaneously. When the resulting protein is no longer needed, transcription stops. As a result, the primary method to control what type of protein and how much of each protein is expressed in a prokaryotic cell is the regulation of DNA transcription. All of the subsequent steps occur automatically. When more protein is required, more transcription occurs. Therefore, in prokaryotic cells, the control of gene expression is mostly at the transcriptional level.

Eukaryotic cells, in contrast, have intracellular organelles that add to their complexity. In eukaryotic cells, the DNA is contained inside the cell’s nucleus and there it is transcribed into RNA. The newly synthesized RNA is then transported out of the nucleus into the cytoplasm, where ribosomes translate the RNA into protein. The processes of transcription and translation are physically separated by the nuclear membrane; transcription occurs only within the nucleus, and translation occurs only outside the nucleus in the cytoplasm. The regulation of gene expression can occur at all stages of the process (Figure 1). Regulation may occur when the DNA is uncoiled and loosened from nucleosomes to bind transcription factors (epigenetic level), when the RNA is transcribed (transcriptional level), when the RNA is processed and exported to the cytoplasm after it is transcribed (post-transcriptional level), when the RNA is translated into protein (translational level), or after the protein has been made (post-translational level).

Answer:

Prokaryotic gene expression is primarily controlled at the level of transcription. Eukaryotic gene expression is controlled at the levels of epigenetics, transcription, post-transcription, translation, and post-translation.

the image down below.​

Answers

Answer:

4 nethier organic

Explanation:

What's the difference between inference and observation? Give examples of each.

Answers

Answer:

A inference is a conclusion reached on the basis of evidence and reasoning.

A observation is an act or instance of regarding attentively or watching

Explanation:

Example for a inference would be - lets say you notice someone isnt acting like theirself you may infer that their not having a good day or their not in a mood

Observation example- when your doing a lab for science you may observe the different types of utensils or the effects of the object you use like oh this is blue or something

All cells have the following
a) plasma membrane, cytoplasm, and ribosomes.
b) plasma membrane, nucleus, and DNA.
c) DNA, ribosomes, and cell wall.
d) plasma membrane, cytoplasm, and nucler

Answers

Answer:

A

its just the letter A......

what must animals do for celluar respiraton to begin

Answers

Answer:

the animal will consume food and inhale oxygen and drink water. the cell will use the oxygen and water to break down the glucose to form energy or ATP

Do trees keep their internal parts separate from the outside environment?

Answers

Answer:

yes, they do.

Explanation:

why is deforestation a threat to Yellowstone National Park?​

Answers

Answer:

Deforestation causes loss of animal and plant species due to their lack of habitat. A huge portion of animals and plant species live in forests so if we take that away from them how are they supposed to survive? Not only does deforestation threaten species known to us, but also threatens species we haven't even discovered yet.

Explanation:

This isn't necessarily for Yellowstone but for all national parks ^

Answer these 2 in different sentences and i will give whoever is first brainliest

Answers

Answer:

Explanation:

1 structural

Physiological

Behavioral.

2.Color matching

Disruptive coloration

Summarize how a single change at cellular level can impact the entire body

Answers

Answer: A single change at a cellular level can change the way our entire body reacts, functions, and develops. Maintaining homeostasis is vital for our bodies to preform its necessary functions, without constant balance our bodies are unable to properly preform consequently, resulting in sickness and even death.

Explanation:

I used my biology book.

The body has different levels of organization based on structures and functions. The cellular level is the smallest and the basic level of the organization that consists of cells that are capable of division.

A single change at a cellular level can impact the entire body as:

Cellular levels consist of cells of different shapes, sizes and functions. Similar cells make up the tissue to perform functions.

A single change can alter the homeostasis of the cell and can bring about a larger impact on the body organization as maintenance of temperature is very important for the living process.

The whole body depends upon the cells for instructions of the growth, functioning, signalling and transportation.

Therefore, a single change at the cellular level can alter the entire body.

To learn more about the level of body organization follow the link:

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What is the term for an organism that makes its own source of chemical energy?
protist
B chloroplast
decomposer
D producer

Answers

Answer:

D thxs good luck on your test

Explanation:

I really need these answers

Answers

Answer:

Down There

Explanation:

1) The Bushmaster has the highest mortality rate.

2) The Southern United States Copperhead has the least mortality rate.

3) I can determine that the Bushmaster's venom works the fastest due to it being the one with most deaths produced. While the U.S. Copperhead's venom might work the least since most people survived its venom.

4) The Black-necked Cobra and the Puff Adder

5) 10 types of snakes.

Hope it helps!! :D

2. The Southern US Copperhead has the lowest mortality rate

Which of the following result in the formation of a dome mountain? Rock layers tilted by vertical subsurface pressure Vertical movements along fault lines Plates colliding causing rock to fold upward together A block of rock lifting at the fault line

Answers

Answer: Rock layers tilted by vertical subsurface pressure

Explanation:

Answer:

a

Explanation:

how are proteins made in animals and humans

Answers

Answer:

Through protein synthesis of course...

Explanation:

DNA and RNA do many steps such as translation, transcription, and more to form protein codons and code them into amino acids. Then, thousands of amino acids are oined together to make proteins, which regulate body function and catalyze chemical reactions (enzymes). Ribosomes are also involved in this action. To make proteins, nitrogen is needed for the plant to use, and that comes mainly from nitrate ions in the soil, and gets into the plant by active transport.

Which of the following shows an unsaturated fatty acid?

Answers

Answer:

I belive the answer is B or C

Explanation:

Answer: its D

Explanation: i got it wrong cause of these guys

what happens to cells formed by meristematic tissue​

Answers

Answer:

The cells formed by meristematic tissue take up a specific role and lose their ability to divide. As a result, they form a permanent tissue. This process of taking up a permanent shape, size and function is called differentiation.

Please mark me as brainlist.

Which of the following are found in DNA,but not RNA?

Answers

Answer:Uracil. Uracil is present in RNA and binds to adenine where as thymine is present in DNA and binds to adenine.

I would really appreciate it if you help me.

Answers

Answer: H

Explanation:

Answer: well at least i helped you

Explanation:0

How do changes in the environment influence ecosystem stability?

Answers

Depending on the change in the environment for example the global warming is melting the poles which affect marine life because of the chance of temperatures

Please answer this.. please

Answers

Answer:

10.8 amu

Explanation:

11 * 0.80 = 8.8 (11 represents ion, 0.80 represents %)

10 * 0.20 = 2 (10 represents ion, 0.20 represents %)

8.8 + 2 = 10.8 amu

Every single cell organism is able to survive because it carries out

Answers

Every single celled organism is able to survive because it carries out metabolic activities. Metabolic activity is a set of chemical reactions which are needed for an organism to maintain it's life.

Every single cell of an organism is able to survive independently because it carries out metabolic processes at its own.

What is Metabolism?

Metabolism can be defined as the chemical changes or reactions which take place in a cell or an organism. These changes make energy and the compounds which cells and organisms need to grow, reproduce, and stay healthy.

Metabolism is divided into two classes: anabolism and catabolism.  Anabolism involves the synthesis of a complex compound from simpler or smaller molecules or atoms. Catabolism involves the breakdown of a complex molecule into smaller and simpler ones.

Living organisms are able to perform the metabolic processes such as respiration, excretion, reproduction, and digestion which is a distinguishing factor from that of non-living organisms.

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