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3 years ago

15

In addition to highly repeated DNA sequences and unique (single-copy) DNA sequences, a third class of DNA exists. What is it cal

led, and what types of elements are involved in it

1 answer:

Ratling [72]3 years ago

7 0

Answer:

long-read sequencing

Explanation:

a method of dna sequencing under active development

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Neurons in the parasympathetic pathway use which neurotransmitters?

Kay [80]

<h2>Acetylcholine</h2>

Explanation:

Acetylcholine is a chemical that is found between the nerve synapses, or gaps, between nerve cells. When activated, it causes the contraction of skeletal muscles and activates glandular functions in the endocrine system. Think of acetylcholine as a mailperson; residents cannot receive their mail until he or she comes and delivers it to the mailbox. Like mailpersons who deliver the mail and move on to the next house, acetylcholine acts quickly and does not hang around. As a result, acetylcholine is rapidly broken down by another chemical substance called cholinesterase.
Acetylcholine was the first neurotransmitter scientists discovered, as well as the most abundant neurotransmitter in the body. A neurotransmitter is a chemical that is released by a neuron, or nerve cell, that sends a signal to another neuron across a synapse. The neurotransmitter binds to receptors to affect how the signal is received. The purpose of the neurotransmitter is to either amplify or inhibit the signals sent between the neurons.
Acetylcholine plays an important role in the signal of muscle movement, sensation of pain, learning and memory formation, the regulation of the endocrine system and rapid eye movement (REM) sleep cycles.

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3 years ago

In which of these is osmosis occurring

lakkis [162]

Answer:

1.Plant absorbing water from the soil.

Explanation:

Osmomsis occurs by the movement of a water from a region of higher concentration of water molecules to a region of lower concentration of water molecules, through a semi permeable membrane,

<em><u>OR</u></em>

It occurs as a result of movement of substance molecules from a region of lower concentration to a region of Higher concentration of the substance.

<em><u>Note</u></em><em><u>:</u></em> The higher the concentration of the substance molecules,the lower the concentration of water molecules.

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3 years ago

Which type of air mass is most likely to form over north dakota

Tatiana [17]

An air mass bringing dry, frigid winds to North Dakota

3 0

3 years ago

Read 2 more answers

pick two structures from an animal cell and explain how they work together and how their functions are vital in keeping the cell

ad-work [718]

Answer:

the cell membrane is the semi-permeable protective cover that keeps the cell held together. the cytoplasm is semi-fluid within the cell membrane that keeps the cell in shape.

Explanation:

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3 years ago

Biology students are examining the diagram below, which shows four vertebrate embryos at the same stage of development. The stud

Lyrx [107]

Answer:

The students are asked, how do the embryos provide evidence for organic evolution.

Explanation:

The embryos of different vertebrate groups have been found to have similar morphological features during the early stages of development. This similarity suggests a common ancestry. The closer the resemblance between the embryos in early stages the closer the phylogenetic relationship of the organisms.

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3 years ago