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3 years ago

How does the operator region of DNA work to regulate gene expression?

Biology

1 answer:

lara [203]3 years ago

4 0

Answer:

Explanation:

Operator region are region of DNA (deoxyribonucliec acid) that repressors protein binds to prevent transcription.

Repressor is an example of regulatory protein they regulate the rate at which transcription of operon occurs . A repressor functions when its bounded to the operator and it prevent enzyme RNA (ribonucliec acid)polymerase from moving to DNA to transcribe the nitrogenous bases by placing a complementary base pair.

Activators are other regulatory proteins that bounds to its DNA binding site and increases transcription of the operon.

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Calculate the final concentration of BSA in the problems below using the formula

Rudiy27

Answer:

A. $C_2=1.5\frac{mg}{mL}$

B. $C_2=0.075\frac{mg}{mL}$

C. $C_2=0.01\frac{mg}{mL}$

D. $C_2=0.001\frac{mg}{mL}$

Explanation:

Hello.

In this case, we must compute the final concentration in all the cases so we solve for it in the given equation:

$C_2=\frac{C_1V_1}{V_2}$

Thus, we proceed as follows:

A. Here, the final diluted solution includes the 300 μL of the 5 mg/ml-BSA and the 700 μL of TBS.

$C_2=\frac{300\mu L*5\frac{mg}{mL} }{(300+700)\mu L}\\\\C_2=1.5\frac{mg}{mL}$

B. Here, the final diluted solution includes the 50 μL of the 1.5 mg/ml-BSA, the 450 μL of water and the 500 μL of TBS.

$C_2=\frac{50\mu L*1.5\frac{mg}{mL} }{(50+450+500)\mu L}\\\\C_2=0.075\frac{mg}{mL}$

C. Here, the final diluted solution includes the 10 μL of the 1 mg/ml-BSA and the 990 μL of TBS.

$C_2=\frac{10\mu L*1\frac{mg}{mL} }{(10+990)\mu L}\\\\C_2=0.01\frac{mg}{mL}$

D. Here, the final diluted solution includes the 10 μL of the 0.1 mg/ml-BSA and the 990 μL of TBS.

$C_2=\frac{10\mu L*0.1\frac{mg}{mL} }{(10+990)\mu L}\\\\C_2=0.001\frac{mg}{mL}$

Best regards.

7 0

3 years ago

The scientific method cannot be used to study which of the following phenomena

zheka24 [161]

Science cannot prove or refute the existence of God or any other supernatural entity.

8 0

4 years ago

Read 2 more answers

Which elements is responsible for most of the material found in teeth

laiz [17]

Calcium is the element responsible for most of the material found in teeth.

Calcium plays a vital role in the formation and maintenance of healthy teeth and gums. Calcium makes the jawbones healthy and strong in order to hold the teeth in place.
Dairy foods such as cheese and yogurt, beans, cabbage and brown rice are good sources of calcium.

7 0

3 years ago

Read 2 more answers

Which statement must be true about the organism?

Artyom0805 [142]

Answer:

If we're talking about human organism then

It is multicelular.

It has a backbone.

It contains cells without nuclei.

Explanation:

human as almost all animals in the world is multicellular meaning they have more than one cell (some bacterias has only one)

backbone or "vertebra" is the is the bone of our back who supports us making us stand up.

Yes our cells contain nuclei , The nucleus contains nucleoplasm, a component where it is immersed in genetic material and as structures that are important for the performance of its functions

And finally our body don't have radial symmetry, radial symmetry is when you can "cut" the image in more than one piece keeping the symmetry in every side, some animals with radial symmetry are the starfish and the jellyfish.

5 0

3 years ago

The most important estrogen is estradiol and the most important androgen is

Pie

The most important estrogen is estradiol and the most important androgen is testosterone.
Testosterone is the primary steroid male sex hormone. Its function is to control the development of male reproductive tissues, to promote secondary sexual characteristics to maintain health (the prevention of osteoporosis for example). It is synthesized from cholesterol and it achieves its effects by binding to androgen receptors on different tissues.

7 0

3 years ago