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Serggg [28]
3 years ago
15

Choose all the answers that apply.

Biology
2 answers:
Alexeev081 [22]3 years ago
8 0
It should be all of them because they are all equally a part of the themes used in science. 
Galina-37 [17]3 years ago
7 0
A. cycles B. equilibrium C. change D. models E. scientific method
all these would be found in science.
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Buffer zones __________.
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Flex to the moon and back
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Which of the following monomers are correctly matched with their polymers
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I think it's A....hope that helps at least
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3 years ago
Read 2 more answers
1. Suppose the synthesis of an amino acid was accomplished by four enzymes encoded by four genes that formed an operon. Draw a m
vivado [14]

I have attached lac operon model having 4 genes. See attachment for better understanding.

Answer:

The Lac operon is controlled  by two signals.

Initiation

Glucose and lactose  concentrations control the initiation of  transcription of the Lac operon through  their effects on the Lac repressor protein  and Cap.

Lactose absent (Repression)

When lactose is absent, the Lac  repressor binds the Lac operator and shuts  off expression of the operon.

Lactose present (Transcription)

Addition  of lactose increases the intracellular  concentration of a related compound,  allolactose. allolactose binds to the  Lac repressor, causing it to undergo a  conformational change that releases its grip  on the operator DNa.

Glucose absent (Repression)

When  glucose is absent, cyclic aMp (red triangle)  is produced by the cell and Cap binds to  DNA.

Glucose present (Transcription)

LacZ, the first gene of the operon,  encodes the enzyme b-galactosidase, which  breaks down lactose to galactose and  glucose.

7 0
3 years ago
A doctor treats a patient with a skin condition with different creams to see which is most effective. What is the independent va
kupik [55]

Answer:

1. Skin Creams

Explanation:

An independent variable is the only variable that is changed while the rest is kept the same. In this setup, the doctor is using different creams on the same patient with the same skin condition so the independent variable is the skin cream and not the skin condition.

7 0
2 years ago
If a muscle fiber were to suddenly and permanently stop producing ATP the fiber would no longer be able to actively transport ca
lisov135 [29]

No muscle contraction will be observed.

<h3>What is the effect of calcium concentration on muscle contraction?</h3>

The concentration of calcium ions in the muscle cells help in contraction and relaxation of muscles fibers.

Release of calcium ions initiate muscle contraction.

Therefore, there will be no contraction of muscle if calcium ions are not transported out from the sarcoplasm.

Learn more about muscle contraction and calcium ions at: brainly.com/question/14760686

#SPJ1

7 0
2 years ago
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