During transcription, initiation involves the attachment of RNA polymerase to the promoter and the start of RNA synthesis.

Bacteria living in the soil are dependent upon which of the following abiotic factors? a. plant root structures and oxygen conte

Diano4ka-milaya [45]

The correct answer for above statement is:

b. soil temperature and water content

Explanation:

In biology and ecology, abiotic components or abiotic factors are non-living chemical and physical parts of the environment that influence living organisms and the functioning of ecosystems. Abiotic components include physical conditions and non-living resources that influence living organisms in terms of growth, maintenance, and reproduction.

6 0

3 years ago

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______ is a rock with a fine, dark texture that makes up the oceanic crust.

Wewaii [24]

Basalt is a rock with a fine, dark texture that makes up the oceanic crust. Basalt is a very important igneous rock whcih has fine texture and is dark coloured. On the earth, it is mainly formed in the ocean tectonic plates. Basalt is very abundant on the moon also.

6 0

3 years ago

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Sympathetic nerves may leave the spinal cord at which vertebra?

alisha [4.7K]

Answer:

b. first thoracic

Explanation:

Sympathetic nervous system is one of the divisions of the autonomic nervous system. The other divisions are parasympathetic nervous system and enteric nervous system.

Autonomic nervous system is composed of preganglionic neurons and postganglionic neurons.

Similarly, the sympathetic nervous system is composed of postganglionic and preganglionic neurons.

The cell bodies of preganglionic neurons of sympathetic nervous system is found in intermediolateral cell columns of spinal cord segments T-T12 and L1-2 or 3. Therefore, sympathetic nervous system is also called thoracolumbar division.

The cell bodies of parasympathetic nervous system are found in the brainstem nuclei which exit via cranial nerves 3, 7, 9, 10 and also in the sacral spinal cord segements S2-4, therefore parasympathetic nervous system is also known as craniosacral division.

QUESTION:

b. first thoracic

This is the correct answer choice as sympathetic nervous system cell bodies are found in intermediolateral cell column of T1-12 and L1-2 or 3 spinal cord segments. Hence, a sympathetic nerve is most likely to leave via first thoracic vertebra.

Third lumbar is less likely as sympathetic nervous system does not extend to this level in every individual.

7 0

3 years ago

A type of transport protein found in the plasma membrane of cells lining the inside of the intestine allows sodium ions to diffu

harkovskaia [24]

Answer:

The transport protein would best be described as the activity of the sodium potassium pump. However, none of the alternatives are correct.

Explanation:

Letter A: stopping the activity of the sodium potassium pump is incorrect because, it is the only mechanism of transport our organism has to move proteins into the cell. So, if we stop it or inhibit the sodium potassium pump, we will cause damage into the heart and intestine cells.

Letter B: Increasing the concentration of glucose outside of the cell is incorrect because, on normal conditions the glucose tends to outflow the cell, so the correct answer would be reduce the concentration of glucose outside of the cell, so that the amount of the glucose remain inside of the cell.

Letter C: lowering the energy of activation has nothing to do with this process at all.

Letter D: Increasing the number of digestive enzymes does not have anything to do with this process neither.

The letter A could be the write answer, if could delete the word stopping.

5 0

2 years ago

What would be an advantage of bacteria growing and dividing rapidly?

AlladinOne [14]

If the bacteria is fighting against a lethal virus.

7 0

3 years ago