A __________ is an example of a signal molecule that can bind to an intracellular receptor and thereby cause a gene to be turned on or off. a protein b glyceride c nucleic acid d steroid e carbohydrate

Answers

Answer 1

Answer:

D. steroid

Explanation:

Intracellular receptors are a type of receptors located inside the cell, specifically in the cytoplasm or nucleus. When intracellular receptors are activated by ligands called SIGNALLING MOLECULES, they change shape and regulate genetic expression in the nucleus i.e. they induce turning on and off in a gene.

However, signalling molecules that activate intracellular receptors are usually hydrophobic hormones because they need to easily diffuse through the cell membrane and bind to the receptors located internally. Example of these hydrophobic signal molecules are STEROIDS.


Related Questions

Which of the following is a potential benefit of a disturbance to a
community?
O a decrease in availability of resources
o the community may be unable to recover
O some species depend on disturbances
O links between the native species break

Answers

Answer:

I'm pretty sure it is 'some species depend on disterbences'

The potential benefit of a disturbance to a community is that some species depend on disturbances.

Importance of disturbance in a community

Community disturbance can be defined as a force, which may be biological or non biological, that results in mortality of organisms or loss of biomass.

Different types of disturbance that can affect a community include:

fires,

storms,

diseases,

volcanic eruptions,

earthquakes,

contaminant spills, and land clearing.

Some species depends on community disturbance because the cleared habitat caused by the disturbance leads to species movement into the newly cleared area, that is, secondary succession.

Learn more about secondary succession here:

https://brainly.com/question/520254

Which list identifies the order of events that formed a volcanic crater?
A) CBDA
B) BACD
C) CADB
D) DBAC

Answers

The correct answer is C)

Based on the given image, the order of events that formed a volcanic crater is CADB. Thus the correct option is C.

What is a volcanic crater?

A nearly circular hole in the ground produced on by volcanic eruptions is known as a volcanic crater. It is a valley that typically stands just above the eruption where volcanic debris is emitted, and it has the shape of a bowl or funnel.

During volcanoes, craters' dimensions and shapes could alter. A volcanic crater, also known as a caldera, is a sizable depression created when a natural disaster occurs and then collapses.

Underneath the surface of the Earth, the molten rock is known as magma. Less dense than normal lava is being pushed upward to the surface by intense pressure. When magma seeps through layers of preexisting rock, it forms another structure.

Therefore, option C is appropriate.

Learn more about the volcanic crater, here:

https://brainly.com/question/1177737

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The nucleus is surrounded by a semipermeable membrane. What would happen if this layer were permeable to most substances?

A. The DNA in the nucleus would be protected from harmful substances

B. Enzymes would not be able to speed up reactions in the nucleus.

C. The nucleus would not be able to communicate with the rest of the cell.

D. Large molecules would be able to enter and damage the nucleus.​

Answers

Answer:

D

Explanation:

If the layer of nucleus were permeable to most substance, then the large molecules would be able to enter and damage the nucleus.

What is nucleus?It is a membrane-bound organelle present in the centre of cell in which thread like structures called chromatins are present which condenses to form chromosomes contains genetic material (that carries genetic information from parents to offspring).It controls all function of the cell.The layer or membrane around nucleus is called nuclear membrane is semi-permeable in nature which means that only specific molecules and ions can move across it.If the membrane would become permeable, then movement of all types of molecules will occur which will disturb the homeostasis (maintaining balance) of cell and can damage the nucleus.

Hence, the correct option is: D. Large molecules would be able to enter and damage the nucleus.

To know more about nucleus here

https://brainly.com/question/141626

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Which of the following is an
organelle?
A. a brain
B. a cell
C. lungs
D. a nucleus

Answers

The nucleus is an organelle

The brain and lungs are both organs
The answer is D nucleus:)

Which of the following accurately describes covalent bonds?
A. Covalent bonds are formed when atoms share one or more
electrons.
B. Covalent bonds are formed when atoms transfer one or more
protons.
C. Covalent bonds are formed when atoms share one or more
protons.
D. Covalent bonds are formed when atoms transfer one or more
electrons.

Answers

Answer:

A

Explanation:

A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms. These electrons are simultaneously attracted by the two atomic nuclei. A covalent bond forms when the difference between the electronegativities of two atoms is too small for an electron transfer to occur to form ions.

Answer: The answer is A Covalent bonds are formed when atoms share one or more electrons

Explanation:

what is the main event that happens during metaphase?​

Answers

anaphase is the next phase that happens
the metaphase plate shows up in the cell

identify and tick on the aromatic medicinal herb.

A) Aloevera
B) Neem
C) Holy basil
D) Harro​

Answers

Aloe Vera


The leaves of this plant contain a thick gel that is quite bitter, but contains a protein that has 18 of the 20 amino acids found in the body, as well as Vitamins A, B, C and E and a complex carbohydrate known as acemannan that delivers nutrition to cells and detoxifies them.

This gel can be applied to skin to moisturise it, exfoliate it and prevent acne. It can also be applied topically to injuries, minor cuts, dry skin and severe burns. Applying it to one's hair and scalp prevents itching and dandruff and reduces hair fall. Drinking the juice (mixed with some other fruit juice, since it’s too bitter by itself) treats constipation and acidity, and improves blood sugar levels. Drinking the juice regularly also promotes weight loss.

Which part of cell division is different in plant and animal cells?
A.cytokinesis
B.anaphase
C.mitosis
D.eukaryotic

Answers

Explanation:

Cytokines is different in plant and animal cells

The Answer is A

Cytokinesis

One of the following is not used as a means of artificial vegetative propagation method C A Stem cutting B Grafting Layering D Seed sowing

Answers

Answer:

d

Explanation:

seed sowing is the true answer i think

One of the following is not used as a means of artificial vegetative propagation method.

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[tex]\sf\purple{D \:Seed\: sowing.}[/tex] ✅

The common types of artificial vegetative propagation includes cutting, layering, grafting, sùckering, and tissue culturing.

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Which of the following limits cell size? Select all of the answers that apply.

Answers

Answer:

Cell size is limited by a cell's surface area to volume ratio. A smaller cell is more effective and transporting materials, including waste products, than a larger cell. Cells come in many different shapes

Explain why unreactive metals are good for making jewelry

Answers

Explanation:

Platinum, gold and silver are used to make jewellery because the metals used in jewellery are always be chosen on the basis of its reactivity. It should be unreactive so that the metal does not tarnish. Many metals used for jewellery are expensive as well because they are rare.

In tall plants, (T) is dominant to small (t). If two plants heterozygous for tall fruit are crossed, what are the
possible genotypes of the offspring?
A- TT, Tt, and tt
B- Tt
C- TT, tt
D-Tt, tt

Answers

Answer:

possible genotypes of offsprings are A.

TT Tt and tt

Answer:

A- TT, Tt, and tt

Explanation:

Draw a Punnett square!

What is NOT a function of a cell
wall?
A. shape
B. movement
C. support
D. strength

Answers

Answer:

B

Explanation:

The Answer is b simple

Determine if the karyotype is male or female

Answers

Answer:

I think it's female because I don't see a Y chromosome if it's has one it's a male

hope this helps

have a good day :)

Explanation:

With the naked eye, a(n) , a negatively charged particle, cannot be seen. switch electron insulator​

Answers

what is the question??

How do you think a period of hot summers will affect the rabbit population?

Answers

Answer: because i dont think rabbits will come out because its to hot and lots of people may be out so they might get scared

Explanation:

which cells is formed by meiosis

Answers

Answer:

Haploid

Explanation:

Answer:

Meiosis produces our sex cells or gametes

How do we know that there will be no changes to our DNA because of this vaccine?

Answers

In order to impact genetic and dna would require either an immense amount of radiation.

Answer: There will be no changes in the DNA. My brother and parents both got it and nothing happened to their DNA. But I can warn you that one of the vaccines will make you terribly sick if you have Coronavirus when you get the shot. I'm unsure tho lol

Explanation:

Helicobacter pylori survives in the stomach due to: a. a thick capsular layer b. endospore formation c. a teichoic acid receptor d. the production of urease to generate ammonia from urea

Answers

the answer is A, a thick capsular layer

I need a argument to: Differences in the structure of protein molecules affect how they connect to other protein molecules. This can result in different traits

Answers

Protein is an important part of a healthy diet. Proteins are made up of chemical 'building blocks' called amino acids. Your body uses amino acids to build and repair muscles and bones and to make hormones and enzymes. They can also be used as an energy source.

Your lab group is assigned an unknown organism to identify to the level of phylum. You have it narrowed down to either Phylum Porifera or Phylum Cnidaria. Which feature would allow you to identify the phylum of your unknown creature

Answers

Answer:

The correct answer is - the presence of pores.

Explanation:

The name Porifera is a term that means pore bearer as these individuals are one cell thick with many tiny pores present on their body and some big openings as well. These small pores are one of the characteristic features of these organisms. It distinguished the Porifera phylum from the Cnidaria phylum. There are many other microscopic and behavioral features present to classify them but in the lab presence of pores is important.

which of the following is good for a plant?

Answers

Answer:

c,d

Explanation:

hehe don't be mad at me

why is the elastic rebound theory compared to a rubber band

Answers

From an examination of the displacement of the ground surface which accompanied the 1906 earthquake, Henry Fielding Reid, Professor of Geology at Johns Hopkins University, concluded that the earthquake must have involved an "elastic rebound" of previously stored elastic stress.

If a stretched rubber band is broken or cut, elastic energy stored in the rubber band during the stretching will suddenly be released. Similarly, the crust of the earth can gradually store elastic stress that is released suddenly during an earthquake.

This gradual accumulation and release of stress and strain is now referred to as the "elastic rebound theory" of earthquakes. Most earthquakes are the result of the sudden elastic rebound of previously stored energy.

The following diagram illustrates the process. Start at the bottom. A straight fence is built across the San Andreas fault. As the Pacific plate moves northwest, it gradually distorts the fence. Just before an earthquake, the fence has an "S" shape. When the earthquake occurs the distortion is released and the two parts of the fence are again straight; but now there is an offset.

This diagram greatly exaggerates the distortion. Actually, the distortion is spread over many miles and can only be seen with precise instrumentation

What are carbohydrates composed of and what is their main function in the body

Answers

Answer:

The Bottom Line

Carbohydrates serve several key functions in your body. They provide you with energy for daily tasks and are the primary fuel source for your brain's high energy demands. Fiber is a special type of carb that helps promote good digestive health and may lower your risk of heart disease and diabetes

Explanation:

HOPE IT HELPS

he following diagram shows the branching tree diagram for some animals. (5 points)

A slanting line is shown. There are five lines drawn vertically on this line at equal intervals. Shark, Frog, Kangaroo, Lion and Chimpanzee are written on top of each vertical line in order from left to right. Common Ancestor is written on the left end of the line. There is a black circle between each pair of these vertical lines. The first black circle is before Shark and says Vertebrae. The second black circle is between Shark and Frog and says Lungs. The third black circle is between Frog and Kangaroo and says Mammary gland. The fourth black circle is between Kangaroo and Lion and says Placenta. The fifth black circle is between Lion and Chimpanzee and says Large brain.

Which two organisms share the least number of derived characteristics?
Frog and kangaroo
Kangaroo and chimpanzee
Lion and chimpanzee
Shark and chimpanzee

Answers

Answer:

d

Explanation:

D is the answer hopefully this helps anyone who needs it

Which planet has a longer day than year?

OVenus

O Neptune

O Earth

Answers

Answer:

VENUS

Explanation:

On Venus, one rotation on its axis takes the equivalent of 243 Earth days and the planet's orbit around the Sun takes the equivalent of 225 Earth days.

Answer:

Venus, I think

Explanation:

So outta these three, Venus is the closest to the sun, so the year is the shortest. Venus is also the planet with the longest day averaging at 116d 18h, so I think that's the right one. Sorry if this is wrong

hope this helps:|

Giving brainliest!!!!!
View the worksheet below
Use the list of words to fill in the blank

Answers

Answer: Hmm!!!

Explanation:1: parathyroid

2:Thyroid

3: Adrenal

4:testes

5:Pitutary

6:Thymus

7:pancreas

8:ovary

1:parathyroid

2:thyroid

3:Adrenal

4:testes

5:Pitutary

6:Thymus

7:pancreas

8:ovary

Do heterozygous individuals have two of the same allele?

Answers

Answer:

False.

Heterozygous means having two different alleles.

Answer:

Heterozygous individuals have two different alleles of a gene.

Explanation:

Which of the following are light-
absorbing molecules?
A. Chloroplasts
B. Photocells
C. Pigments

Answers

Answer:

I think it is A chloroplasts

Can someone help I’ve been stuck at this question for the past 10 minutes


A _____ extinction occurs when many species go extinct in a relatively short period of time

Answers

Answer:

I think it's

A mass extinction occurs when many species go extinct in a relatively short period of time.

Explanation:

Mass extinction is usually defined as a loss of about three-quarters of all species in existence across the entire Earth over a “short” geological period of time. Hence, I think the answer is correct.

Answer:

The correct answer is Mass

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