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Dmitrij [34]
2 years ago
15

Hair has a medulla region that is variable. Describe the possible variations

Biology
1 answer:
e-lub [12.9K]2 years ago
8 0

Answer:

3 types I think

Explanation:

Continuous, Fragmented and absent.

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What are the three types of cell signaling
PIT_PIT [208]

Answer:

there are 4: paracrine signaling, autocrine signaling, endocrine signaling, and synaptic signaling

Explanation:

paracrine:cells that are near one another communicate through the release of chemical messengers 

autocrine: a cell signals to itself, releasing a ligand that binds to receptors on its own surface 

endocrine:When cells need to transmit signals over long distances, they often use the circulatory system as a distribution network for the messages they send. 

synaptic: nerve cells transmit signals. The junction between two nerve cells where signal transmission occurs.

5 0
3 years ago
Restriction endonucleases are especially useful if they generate sticky ends. What makes an end sticky?
Mazyrski [523]

The question is incomplete as it does not have the options which are:

A) single-stranded complementary tails

B) blunt ends

C) poly-A sequences

D) 5' cap

E) interference

Answer:

A) single stranded complementary tails

Explanation:

Restriction endonuclease is the enzyme which cuts the DNA sequence in the internal sequence.

The endonuclease enzyme can cut the DNA sequence in a way that it can form the cuts with the single-stranded overhangs called sticky ends and without overhangs called blunt ends.

The sticky ends are produced when the enzyme makes cut at the single strand and then makes the cut at between the same base at the nitrogenous base. This type of asymmetrical cut forms the single-stranded overhangs which can form the complementary base pairs easily.

Thus, Option-A is correct.

5 0
3 years ago
heart failure (HF) is admitted to the hospital. Which goal has the highest priority when planning nursing care? A. The infant wi
Vladimir79 [104]

Answer:

A. The infant will maintain an adequate fluid balance.

Explanation:

It is urgent for the nurse to achieve the  hemodynamic stability with the administration of dopamine, diuretics, calcium and  baking soda

It is fundamental to seek the balance between transport and consumption of oxygen to the tissues, with the inversion of the anaerobiosis of the tissues

3 0
2 years ago
If an object is moving in a circular path is its velocity tangential or radial
Dennis_Churaev [7]
I think that it is radial
6 0
3 years ago
Read 2 more answers
Question 1
Kazeer [188]

Answer:

the last one which I'm guessing is d......cause it kinda messed up

3 0
1 year ago
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