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2 years ago

PLEASE HELP WILL MARK BRAINLIEST ANSWER FAST

Biology

2 answers:

boyakko [2]2 years ago

5 0

Answer:

Since boron only has two electron shells, it is about as capable of gaining electrons as it is of losing electrons, so it behaves as a metalloid. The other elements in this group have more electron shells, so it is much easier for them to lose their valence electrons and they behave like metals.

Alexandra [31]2 years ago

4 0

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Which dna polymerase is mainly responsible for genome replication in e. coli?

lana66690 [7]

Answer:

DNA Polymerase

Explanation:

In E. coli, the DNA polymerase that handles most of the synthesis is DNA polymerase III. There are two molecules of DNA polymerase III at a replication fork, each of them hard at work on one of the two new DNA strands.

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3 years ago

How do the thyroid and parathyroid from a feedback loop?

shtirl [24]

Explanation:

When calcium levels in the blood become too low, parathyroid hormone leads to an increase in calcium by degrading bone. In response, calcitonin from the thyroid is released when the levels are high again, to decrease calcium levels in the blood.

Further Explanation:

During homeostasis the body maintains a constant internal balance in pH, temperature, blood pressure etc. Cells in a multicellular organism become specialized for particular tasks and communicate with one another in order to maintain homeostasis. Within the human body these are known as hormone cascades, where several complex steps occur- the tissues signal to one another with the use of hormones released by the endocrine system. The regulation (increase and decrease) of these secretions is achieved by negative feedback loops, where the release of certain substances during a cascade in turn halts the secretion of hormones at earlier stages.

In the body calcium homeostasis, which is generally defined as the maintenance of specific internal conditions, is mediated by the endocrine system through hormonal control. This regulates the calcium flux between the bloodstream and the bone; and the hormones responsible, change the ratio of osteoclast activity to osteoblast activity -osteoblasts build bone while osteoclasts breakdown or degrade bone.

Hormones responsible include calcitonin (from special parafollicular cells in the thyroid gland), calcitriol (activated vitamin D) and the parathyroid hormone (from the parathyroid glands). These affect the absorption of calcium from the gut, or kidney reabsorption; both parathyroid hormone and calcitriol act by causing the increase of calcium ions into the bloodstream as the bone is degraded by osteoclasts.

Learn more about tissue types at brainly.com/question/8487952

Learn more about homeostasis at brainly.com/question/1601808

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4 years ago

Which of the following is an important property of water?

Leokris [45]

I'm pretty sure that it's C- Water is a good solvent. hope this helps.

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3 years ago

The ground beneath the Nelson's house is beginning to sag and sink. Which of the following is a possible explanation? A. The gro

atroni [7]

Answer:

I believe the correct answer from the choices listed above is option A. The possible explanation of the statement above would be because the groundwater has been exhausted. Because of such the pressure beneath needs to be in equilibrium with the one above causing the ground to sink.

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3 years ago

Read 2 more answers

Which statements best relates why these animals have so much blubberyou

Misha Larkins [42]

Answer:

They have a lot of blubber due to their habitat or the weather. I'm not sure if that's correct.

Explanation:

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3 years ago