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In-s [12.5K]
3 years ago
14

Do Nerve cells begin to develop before or after a child is born?

Biology
2 answers:
dimaraw [331]3 years ago
5 0

Answer:

False

Explanation:

EEEEEEEEEEEEEEEEEEEEEEeeeeeeeeee4e44eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee235476

kirza4 [7]3 years ago
3 0
Nerve cells develop after the baby is born.

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A powerful appetite stimulator that has been shown to cause people to hoard food is
Sindrei [870]

B. neuropeptide y is correct answer


8 0
3 years ago
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T-G-A-G-G-T-C-T-C-C-T-C T-G-A-G-G-T-C-A-C-C-T-C What type of mutation is depicted in this sequence?
kap26 [50]

Answer: The mutation is substitution.

Explanation:

There are three main types of mutation:

Substitution, deletion, and insertion.

We would be able to tell right away if the second sequence had an insertion or deletion, because it would have a different number of letters than first sequence. However, it does not. Both sequences have 12 letters.

But, the 8th letter in the first sequence (T) is different from the 8th letter in the second sequence (A).

This is substitution.

6 0
3 years ago
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The _____ controls what enters and leaves the cell.
gogolik [260]
Cell membrane


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8 0
3 years ago
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A student is measuring the effect of different temperatures on the effect of enzymes in biological systems. What temperature ran
viktelen [127]

Answer:

A. 25 °C, 30 °C, 35 °C, 40 °C, 45 °C  

Explanation:

Each enzyme has a temperature at which it works best. In humans and many animals, that temperature is around body temperature (37 °C or 98.6 °F). Most enzymes are denatured and work poorly at 40 °C (104 °F).

That automatically eliminates Option B.

I would pick a temperature close to 37 °C (98.6 °F) and temperatures at intervals above and below that.

Option D is wrong because it includes no temperatures above body temperature.

Option C is wrong, because it includes temperatures of 45 °C and 55 °C, at which the enzymes will be denatured.

That leaves Option A as the best answer. It includes only one temperature above 40 °C.

8 0
3 years ago
A researcher synthesizes a new molecule called inhibitor X that inhibits the activity of phosphofructokinase (PFK), the enzyme t
Oduvanchick [21]

Answer : The dissociation constant of the PFK‑inhibitor complex is, 5 µM

Explanation :

The expression for reversible competitive inhibition when apparent Km affected by addition of the inhibitor is:

K_m_a=K_m[1+\frac{I}{K_i}]

where,

K_m_a = apparent value = 52 µM

K_m = Michaelis–Menten constant = 40 µM

I = inhibitor concentration = 1.5 µM

K_i = dissociation constant of the PFK‑inhibitor complex

Now put all the given values in the above formula, we get:

52\mu M=40\mu M[1+\frac{1.5\mu M}{K_i}]

K_i=5\mu M

Therefore, the dissociation constant of the PFK‑inhibitor complex is, 5 µM

7 0
3 years ago
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