Why are epithelial cells in membranes

packed tightly?

to keep organs connected

to protect organs

to form different layers

Answers

Answer 1

Answer:

to protect organs

Explanation:

Epithelial cells are cells found in the human skin. They are tightly packed cells which helps to protect organs in the human body.

The cells are divided into different layers with an inner part and the outermost layer.

The skin is the largest organ of the human body. It protects all organs from the external environment.


Related Questions

Describe the following types of cell signaling:

Autocrine:

Juxtacrine:

Endocrine:

Paracrine:

Answers

Answer:

Autocrine:Autocrine signaling means the production and secretion of an extracellular mediator by a cell followed by the binding of that mediator to receptors on the same cell to initiate signal transduction. A well-characterized form of autocrine signaling is the secretion of IL-1 by macrophages.

Juxtacrine:In biology, juxtacrine signalling (or contact-dependent signalling) is a type of cell–cell or cell–extracellular matrix signalling in multicellular organisms that requires close contact. ... A membrane ligand (protein, oligosaccharide, lipid) and a membrane protein of two adjacent cells interact.

Endocrine:The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.

Paracrine:Paracrine signaling is a form of cell signaling or cell-to-cell communication in which a cell produces a signal to induce changes in nearby cells, altering the behaviour of those cells. ... However, the exact distance that paracrine factors can travel is not certain.

Explanation:

Hope this helps you

Crown me as brainliest:)

Predicting future events in a person's life based on the position of planets is an example of

physics
geology
astronomy
pseudoscience

Answers

Answer:

pseudoscience

Explanation:

Answer:

Give him brainiest the guy is right

Explanation:


Sperm cells of a specific species of mice have 16 chromosomes. What is the expected number of chromosomes in an adult mouse of this species?

Answers

Answer:

32 chromosomes (16 pair)

Explanation:

Gametes or sex cells of sexually reproducing organisms are produced via a process called MEIOSIS, which is a type of cell division that reduces the chromosomal number of the parent cell by half. Hence, a mice that produces a sperm cell (gametes) via meiosis with 16 chromosomes will have double that amount in somatic cells of that mouse.

That is, the expected number of chromosomes in an adult mouse of this species with 16 chromosome in its sperm cell is 32 since half of this number makes up the chromosomal number in gametes

which part of the electromagnetic spectrum can be seen by humans

Answers

Answer:

A) Visible Light

HELP FAST HELP ASAP
Which is a renewable resource?
which one of these is it
petroleum
wood
iron
coal
will get awarded with brainliest

Answers

Answer:

I think petroleum

but I am not sure

Answer:

Wood

Explanation:

Wood comes from trees. Because trees can be grown, they are renewable.

Suppose you mate a black rooster with a white hen. The feathers of all the offspring are “gray,” a color that is intermediate between black and white. Explain the inheritance pattern in these chickens.

Answers

Answer:

Incomplete dominance

Explanation:

The inheritance pattern described here is called incomplete dominance (sometimes also referred to as semi-dominance or partial dominance). This occurs when the dominant allele doesn't fully prevent the effects of the recessive allele from being expressed. This results in the trait of the offspring being equivalent to the mix of both alleles. If the rooster's feathers are black and the hen's are white, the chicks' will be grey.

Is an acid a compound that splits OH-ions

Answers

Answer:

Acids are compounds that dissociate (break) into hydrogen (H+) ions and another compound when placed in an aqueous solution. ... If one of the ions is OH-, the solution is basic. An example of a strong base is sodium hydroxide (NaOH).

hope this helped

Please mark me Branliest

confusin help pls ??????????

Answers

Answer:

yes I ldk what u want with no pictures


muscle cells in athletes often have more mitochondria than muscle cells in nonathletes. Based on this observation, it can be inferred that the muscle cells in athletes

Answers

Answer:

...it can be infered that athletes muscle cells make and use more energy.

the rate of photosynthesis can be affected by several factors, such as light intensity, temperature ,water, and carbon dioxide. describe how the lack of water in an environment can affect the amount of carbon dioxide absorbed by the plant

Answers

Answer:

Plants need water, so that their guard cells can fill up and become turgid which would allow the stomata to open and gas to exchange. If there is not much water, not much gas exchange can occur hence not much Carbon dioxide can be taken in.

Explanation:

Plants require water for the process of photosynthesis. Plants need water so that their guard cells can fill up and become turgid. This allows the exchange of gases in the stomata.

How does water affect photosynthesis?

During photosynthesis, the plants take in carbon dioxide and water molecules from the air and soil particles. Within the plant cell, this water is oxidized to generate oxygen gas, meaning that it loses electrons, while the carbon dioxide gas is reduced in the chloroplast of the plant cell by gain of electrons to produce carbohydrates. This process transforms the water into oxygen gas and the carbon dioxide gas into glucose molecules (carbohydrates).

Plants need water, so that the guard cells in the plant can fill up and become turgid which would allow the stomata to open and exchange of gases. If there is not much water present in the guard cells, not much gas exchange can occur hence not much of the carbon dioxide can be taken in from the atmosphere.

Learn more about Photosynthesis here:

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#SPJ2

Convection causes tectonic plates to move.
A) True
B) False

Answers

Answer:

Hope this helps.

Explanation:

Plates at our planet's surface move because of the intense heat in the Earth's core that causes molten rock in the mantle layer to move. It moves in a pattern called a convection cell that forms when warm material rises, cools, and eventually sink down. As the cooled material sinks down, it is warmed and rises again. So I think false

Answer:

the anwser is false aka b

What is difference between acid and bases?

Definition. A substance, mostly liquid that donates a proton or accepts an electron pair in reactions. An acid increases the concentration of H+ ions. A base is a substance that releases hydroxide (OH-) ions in aqueous solution, donates electrons and accepts protons.
(just if someone needs this i guess)

Answers

Answer:

Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas. Although bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery; bases react with fats and oils. In phenolphthalein, indicator acids remain colorless, and base gives pink color.

Explanation:

An acid is a substance that releases hydrogen ions into an aqueous solution. A base is a substance that releases hydroxide ions.

Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas. Although bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery; bases react with fats and oils. In phenolphthalein, indicator acids remain colorless, and base gives pink color.

You are walking in a clear-cut section of forest a few days after a heavy rainstorm A nearby stream is very muddy and has
many dead fish. What might have happened?

Answers

Answer:

in my oppinion its call a  

source of pergisol

Explanation:

What if climate change is self-sustaining? This is already the case, for example, with melting arctic sea ice. This reflects solar radiation, which allows the ocean, located under the ice, to stay cold. But when sea ice melts, the ocean absorbs heat from the sun, which melts more ice. In general, it is difficult to predict the tipping point where such a feedback loop will engage.

Spread over more than 23,000,000 km2, at the top of the globe, permafrost (permanently frozen ground) could enter such a vicious circle. Normally, up to 4 m of soil and plant debris cover the permafrost. This top layer (called the active layer) normally melts every summer, and freezes in winter. It thus protects the permafrost from the rise in heat outside. But in the spring of 2018, a team working at a research station in Tchersky, Russia, discovered that near-surface land had not frozen over at all during the long, dark polar night.

Is a crayfish living or nonliving and what are two reasons

Answers

Answer: Crayfish are freshwater crustaceans resembling small lobsters (to which they are related). ... Crayfish feed on animals and plants, either living or decomposing, and detritus. So yes they are alive

Explanation:

No need to explain sunce I explained above :)

Answer:

crayfish are living.

Explanation:

1. They are like small lobsters and lobsters are living.                                              2.And they can animals or whatever they find thats good to them i guess.

Brainliest for correct answer

Answers

Answer C



Step by step explanation:

What shape represents the phosphate in a nucleotide?

Answers

Answer:

Each nucleotide is made up of a nitrogenous base, a pentose sugar, and a phosphate. The remainder of the molecule forms the pentose sugar.

Explanation:

The cell membrane contains channels and pumps that help move materials from one side to the other. What are these channels and pumps made of? *

A. Carbohydrates
B. Lipds
C. Bi-Lipids
D. Proteins

Answers

Answer:

D protein it taste good very good

28. The phases for Meiosis II are:

Answers

In meiosis II, the phases are, again, analogous to mitosis: prophase II, metaphase II, anaphase II, and telophase II

What organisms carry out metabolism?

Answers

Answer:

Eukaryotes

Explanation:

Are organisms wise cells have a nucleus and membrane bound organelles. Prokaryotes are organisms whose cells lack a nucleus. Eukaryotes carry out cellular respiration with the help of mitochondria. Mitochondria are organelles that produce the enzymes necessary to catalyze the series of reactions that produce ATP.

A Neutral will measure ________ on a Ph Scale.

Answers

Answer:

7.0

Explanation:

Answer:

5 and under would be nuetral

You get a cut on your finger and some bacteria enter. Your immune system cells kill off the invaders by ingesting them. This is an example of:

Answers

It’s an example of Phagocytosis.

Some plant roots grow with mycorrhizal fungi. The fungi absorb water and
minerals and pass them on to the plant and receive carbohydrates from the
plant. This is an example of:
- mutualism
- competition
- predation
- parasitism

Answers

Answer:

-mutualism

Explanation:

Hope it helps hehe

All members of a species that live in the same area at the same time make up alan)

Answers

answer: population

explanation:
All the members of one species in one area are referred to as a population.

HELP PLEASE!!! i really need help!

Answers

its the first destablish of conster defore

A strand of DNA contains the bases adenine, cytosine, cytosine, and guanine, in that order. Which would be the order of the bases on the opposite strand of DNA?
cytosine, adenine, adenine, and thymine
cytosine, thymine, thymine, and adenine
thymine, guanine, guanine, and cytosine
thymine, adenine, adenine, and cytosine

Answers

Answer:

thymine, guanine, guanine, and cytosine

Explanation:

The order of the bases on the opposite strand of DNA should be Thymine, Guanine, Guanine and Cytosine.

DNA and complementary base pairing

The deoxyribonucleic acid (DNA) is a double helix composed of two long chains of sequential nucleotides.

In DNA there are four classes of nucleotides, each containing one different nitrogenous base (i.e., Adenine, Guanine, Cytosine, Thymine).

According to the base pair rules of complementarity, Adenine always pairs with Thymine, whereas Guanine always pairs with Cytosine.

In conclusion, the order of the bases on the opposite strand of DNA should be Thymine, Guanine, Guanine and Cytosine.

Learn more about complementary bases here:

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In the mall, a jeweler offers to sell you a diamond ring for fifty bucks. How could you test if the rock in the
ring is a real diamond?

Answers

Answer:

By dropping it in a volcano and pick it back up

Explanation:

Answer:

U gotta have a tester. DUH.

Stomach acid has a pH of about _____. a. 4 c. 6 b. 2 d. 10

Answers

The answer is B. 2. hope this helps

In the equation shown, what are the reactants? 2H2-02 --> H2O
Hydrogen atoms
Hydrogen and oxygen molecules
Water molecules
Ice crystals

Answers

It would be hydrogen and oxygen molecules. H: hydrogen O: oxygen, the H2O is the product.

Answer:

Hydrogen and oxygen molecules

Explanation:

What does the Cell Wall do?
The control center of the cell where DNA is located
These give the Endoplasmic reticulum a "rough" look, they are responsible for making proteins.
Gives the cell structure and support. Only found in plant cells.
The powerhouse of the cell. Provides energy in the form of ATP.

Answers

Answer:

the cell wall is a protective layer that keeps things in or out.

nucleus

true

true

mitochondria

Explanation:

BRAINLYIST PLSSSS HURRY

Answers

Answer:

A

Explanation:

only one type of atom= (PURE SUBSTANCE not mixture)

is atom chemically bonded to another atom? (NO- element, not compound)

Answer:. Maybe A. Im not sure.

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