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3 years ago

Plsssssss help meeeeeeeer

Biology

1 answer:

Sladkaya [172]3 years ago

3 0

50% are wavy
50% are straight

C. W
______
S|Sc/ Sw|
S|Sc/ Sw|

I’m not sure about the color?

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What term is used to describe bacterial cells that can naturally take up dna from their environment?

Maru [420]

<h2>The correct answer is: Competent cells</h2>

Explanation:

Bacterial cells have the capability of incorporating foreign naked DNA or deoxyribonucleic acid fragments from the environment or the exterior of the cell to the interior of the cell. This process is known as Transformation.
The bacterial cells which are able to undergo transformation are called Competent bacterial cells.
Some of the bacterial cells are naturally competent like<em> Bacillus subtilis, Streptocossus pneumoniae</em> while others like <em>Escherishia coli </em>need to be chemically treated to make them artificially competent.
In natural competence, the foreign DNA from the cell exterior is incorporated into the cell interior through specific protein complexes present in the plasma membrane of the bacterial cells.
In artificial competence, the negative charge on foreign DNA is masked by positively charged calcium ions (so that it is not repelled by the negative charge of the lipid bilayer of the bacterial cell plasma membrane) and then small pores are created in the lipid bilayer of the plasma membrane of the bacterial cells by giving a heat shock to the cells. This results in the uptake of the DNA by the bacterial cells.

3 0

3 years ago

Can anyone explain to me the "all or nothing law" of action potentials? I'm in a college physiology class, and I do not understa

AysviL [449]

The all or nothing law of action potentials mainly talks about how the axons in the neurons only fire when there is enough action potential to fire. If there is not enough action potential, then the neuron will not be able to send signals because the action potential does not fire because of the deficit.

8 0

3 years ago

all plants give out oxygen during day and carbon dioxide during night. Do you agree with this statement. Give reason

Citrus2011 [14]

This statement is incomplete.

"All plants give out oxygen during day and carbon dioxide during night"

Explanation :

Photosynthesis occurs only during day time.

During this time oxygen is produced . Some oxygen is used for respiration and rest of oxygen is diffused out into air.

Carbon dioxide produced during day time by respiration is used in photosynthesis.

But at night time, no photosynthesis occurs and hence no oxygen is produced oxygen from air diffuses into leaves to carry out respiration and carbon dioxide produced by respiration diffuses out into air.

Hence Respiration occurs day and night .. Hence Carbon dioxide is emitted all the time....

Plz Mark Brainliest trying to reach expert

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3 years ago

You are working on a team that is designing a new drug. In order for this drug to work, it must enter the cytoplasm of specific

olga_2 [115]

Answer:E) integral proteins

Explanation:

STUDY

PLAY

What are the membrane structures that function in active transport?

A) peripheral proteins

B) carbohydrates

C) cholesterol

D) cytoskeleton filaments

E) integral proteins

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3 years ago

Which part of the brain is involved in the regulation of body temperature, hunger, thirst, and sexual behavior?

Vlad [161]

It would be the Hypothalamus.

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3 years ago

Plsssssss help meeeeeeeer​

Plsssssss help meeeeeeeer