How can genes be turned on and off?

Answers

Answer 1

Answer:

please give me brainlist and follow

Each cell expresses, or turns on, only a fraction of its genes at any given time. The rest of the genes are repressed, or turned off. The process of turning genes on and off is known as gene regulation.


Related Questions

different between prokaryotic and eukaryotic cells​

Answers

Answer:

eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not.

hope this helps <3

The main difference between prokaryotic and eukaryotic cells is that prokaryotic cells do not have a nucleus while eukaryotic cells do have a nucleus.

Hope this helps you! :)

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What are
"sungrazers"? Why is this a good, descriptive name to use?

Answers

a comet that passes extremely close to the Sun at perihelion – sometimes within a few thousand kilometres of the Sun's surface. Although small sungrazers can completely evaporate during such a close approach to the Sun, larger sungrazers can survive many perihelion passages. However, the strong evaporation and tidal forces they experience often lead to their fragmentation.

What is needed to complete the equation representing cellular respiration?

Glucose + Oxygen → Carbon Dioxide + _______ + Energy

Answers

Answer:

Water

Explanation:

Answer:

water

Explanation:

glucose+oxygen-> carbon dioxide+water+energy

According to Charles Darwin theory of natural selection

Answers

the answer should be the species most adaptable to changes (like in the environment etc.) but I would go for C or D

Answer:

C or D

Explanation:

the answer should be the species most adaptable to changes (like in the environment etc.) but I would go for C or D

Fill the container to the top with the particles. Place your hand tightly over the top of the container and shake it. What state of matter does this represent? Explain.

Answers

Answer:

It should be solid.

Explanation:

Solids have little to no movement in their particles. If you were to fill it to the top and shake, not much would move, therefore representing solids.

Particles are the unit that makes the matter. The states of matter based on particles can be solid, gas, or liquid. The matter in the experiment represents solid matter.

What are phases of matter?

The phases or states of matter are based on the composition and the distribution of the particles of the object. There are four known and observable states of matter namely solid, gas, plasma, and liquid.

The gas is the freest and most spaced particle with no fixed volume and shape. On the other hand, the particles of a liquid are a little closer than the gas but do have an indefinite shape.

The solid has particles closely packed with no space, which makes them have a definite shape and volume. When a container filled with particles is shaken, there is no movement as they are very closely packed, like solid.

Therefore, the container represents solid matter.

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Is the lytic vacuole in a eukaryotic cell, prokaryotes, or both?

Answers

Eukaryotic but plant specialized

A student is collecting the gas given off from a frog living in an enclosed tank. The
gas being collected is probably
Oxygen
Nitrogen
Carbon Dioxide

Answers

Answer:

oxygen

Explanation:

Answer: Oxygen is the most likely to be correct (could be carbon dioxide if using a certain time limit but highly doubt it).

Explanation: I say this Bc unless that frog was being tortured inside it’s tank, I doubt it would be carbon dioxide or nitrogen... simply put, carbon dioxide is the air we breathe out, and the tank would have to be completely sealed in order to collect it later on (and the frog wouldn’t survive very long like that either) Nitrogen is just a bad idea ngl, it’s basically the atmosphere we live in but it can be used as a coolant which I doubt the frog would even need so yeah. Hope this helps

PLEASE ANSWER I NEED HELP

Answers

Answer:

this would be B

Explanation:

a oceanic crust is denser than a continental crust

What is correct regarding trans fatty acids

Answers

Answer:

They raise LDL and lower HDL

Explanation:

Which statements accurately describe the characteristics of the cell membrane?

Answers

Answer:

If this is the question on edge2020 the correct answers are:

-The cell membrane’s protein channels only let certain molecules pass through.

-The cell membrane has protein channels that are partly inside and partly outside the cell.        

-   The cell membrane is a double layer of phosphate molecules and lipids.

Explanation:

I HOPE THIS HELPS!!

Which process creates food for plants in order to maintain homeostasis? Breathing O Cell division Cellular respiration Photosynthesis​

Answers

Answer:

Photosynthesis

Explanation:

Photosynthesis

Plz help will give brainest

Answers

Answer:

I believe it's D

Explanation:

what is spirogyra in biology​

Answers

Answer:

Spirogyra is a genus of green algae that belong to the order Zygnematales. These free-flowing, filamentous algae are characterized by ribbon-shaped chloroplasts that are arranged in a helical manner inside the cells. So the name is derived from the spiral arrangement of chloroplasts in these algae.

Explanation:

1. Which change is an environmental effect of building dams?

A) weed growth upstream

B) increased fertility downstream

C) increased water temperature upstream

D) sediment builds up downstream


2. How can humans increase the rate of endangered or extinct species?

A) reduce environmental impacts

B) build and populate more zoos

C) pass more laws about land use

D) introduce new predators to an environment

Answers

Answer: 1. C) increased water temperature upstream. 2. D) introduce new predators to an environment. brainliest??

Explanation:

The change that is an environmental effect of building dams is increased water temperature upstream, which is in Option C, and humans can increase the rate of endangered or extinct species by reducing environmental impacts, which is in Option A.

What is Human activities on species?

Human activities are the primary cause of species endangerment and extinction, so humans must take actions to reduce environmental impacts in order to increase the rate of endangered or extinct species, and by reducing hunting and poaching and restoring degraded ecosystems can help protect endangered species, and reducing carbon emissions and promoting sustainable development can help mitigate the effects of climate change.

Hence, the effect of building dams is increased water temperature upstream, which is Option C, and humans can increase the rate of endangered or extinct species by reducing environmental impacts, which is Option A.

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How do some chemicals increase the risk of a person getting cancer ?

A. By causing cell mutations

B. By causing a decrease in the immune response

C. By causing an increase of toxins in the skin

D. By causing a deficiency of Vitamin D

Answers

Answer:

A. By causing cell mutations

What is the relationship between UV radiation and melanin

Answers

UVA radiation causes lesions or DNA damage to melanocytes, which are the skin cells that produce the skin pigment known as melanin. Melanin is a protective pigment in skin, blocking UV radiation from damaging DNA and potentially causing skin cancer.

Bones grow in diameter due to bone formation

Answers

Answer:

Osteoblasts move in and ossify the matrix to form bone. Even though bones stop growing in length in early adulthood, they can continue to increase in thickness or diameter throughout life. The increase in diameter is called appositional growth.

HEYYYYYYYYYY PLEASE HELP!!!!!

Answers

Answer:

Velocity

Explanation:

Given the change in positive (direction) over time we are given the velocity formula.

V = Change in direction/Change in time

Since we are given a direction we can rule out speed as well as direction in itself. We can also rule out acceleration because that is the change in Velocity divided by change in time.

classify the species Cyanobacteria as consumers detetroves etc ?

Answers

Answer:

njsjsjsksksksksisiaoaoaoa

Answer:

There are four types of consumers: omnivores, carnivores, herbivores and decomposers. Herbivores are living things that only eat plants to get the food and energy they need. Animals like whales, elephants, cows, pigs, rabbits, and horses are herbivores. Carnivores are living things that only eat meat.

Invasive species in Texas have

Answers

Zebra Mussels. Zebra mussels have become the poster child for invasive species in Texas

Feral Hogs

Nutria

Red Fire Ants

Giant Salvinia

Africanized Bees

Black Tiger Shrimp

Asian Carp

Life's large molecules, or macromolecules, are classified into what four categories?​

Answers

Answer:

macromolecules: carbohydrates, lipids, proteins, and nucleic acids.

so the answer is macromolecules  

Explanation:

Fill in the blank: Land ______________faster than water, but it also ___________________more quickly.

Answers

Answer:

Land heat up faster than water,but it also soil cools down faster than water quickly at night

photosynthesis is a reaction that

Answers

Answer:

that takes place inside a plant, producing food for the plant to survive

How does the shape of organ relate to gene expression?

Answers

Answer:

The alleles for MADS-box genes get expressed at different levels. They form the “L” complex and the “SP” complex. These are a group of proteins that determine the shape of the petals. The more they L complex is expressed, the high the probability that the petals of the flower will form the ‘lip’ and the high the SP complex is expressed then the high the likelihood of dominant petals.

Explanation:

Hope this helped, and consider giving Brainliest :)

Plz help me well mark brainliest if you are correct!

Answers

The correct answer is B sedimentary

Oil is What is one of the primary functions of this food in the body?

Answers

Answer:

yes

Explanation:

because I it has to do with oil and fat

Which wave interaction is shown by the diagram? o absorption o diffraction o reflection o refraction ​

Answers

Answer:I agree

Explanation:

Diffraction wave interaction is shown by the diagram.

What do you mean by diffraction?

Diffraction is defined as the interference or bending of waves around the corners of an obstacle or through an aperture into the region of geometrical shadow of the obstacle/aperture.

The most common example of diffraction occurs with water waves which bend around a fixed object. Light bends similarly around the edge of an object. The animation shows wave fronts passing through two small openings.

Diffraction results from the interference of an infinite number of waves emitted by a continuous distribution of source points. According to Huygens' principle every point on a wave front of light can be considered to be a secondary source of spherical wavelets.

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please help i don’t know how to do this :(

Answers

Answer:

polysacchiride is B.

Nucleic acid is C

Protein is D

Lipid is A

Explanation:

Many of the hardest rocks are metamorphic rocks. Why do you think metamorphic rocks are harder than sedimentary rocks?

Answers

Answer:

Metamorphic rocks are almost always harder than sedimentary rocks. They are generally as hard and sometimes harder than igneous rocks. They form the roots of many mountain chains and are exposed to the surface after the softer outer layers of rocks are eroded away.  

Because their mineral grains grew together tightly during metamorphism, they're generally strong rocks.

8. Which is true about viruses!
a. They are prokaryotic cells that infect living organisms
b. They are nonliving particles that infect living organisms
C. They are eukaryotic cells that infect living organisms
d. They are fungi that infect living organisms

Answers

Answer:

The Answer is gonna be A. They are prokaryotic cells that infect living organisms

This is the right Answer :3

I hope you are having a great day ❤️❤️❤️❤️

the answer is A a virus is a prokaryotic cell
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