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maria [59]
2 years ago
6

The principal force driving movement in diffusion is the __________.

Biology
1 answer:
Mazyrski [523]2 years ago
7 0

Answer:

Concentration gradient.

Explanation:

Diffusion may be defined as the process of the movement of solute particles down the concentration gradient. This process does not require the expenditure of energy.

The main driving force in diffusion is the concentration gradient. The molecules generally move from its region of the higher concentration towards the region its lower concentration.

Thus, the correct answer is option (3).

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When enzymes are elongating (building) a newly synthesized dna strand in pcr, new nucleotides are being added to the ____ of the
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The correct answer is c. 3 ' hydroxyl of deoxyribose.  
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During the DNA synthesis via PCR, polymerization occurs in 5’-3’ direction. This means that enzyme DNA polymerase which synthesizes a new DNA strand is complementary to the DNA template strand (3’-<span>5’ direction). 5’ phosphate group of the free nucleotides which are added is attached to the 3'-hydroxyl group at the end of the elongating DNA strand.</span></span>
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2 years ago
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One hypothesis for the original function of precursors of charged trna is that
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tRNA-precursors were smaller than the modern tRNA and their primary function was to participate in the formation of new structures by joining two or more RNA molecules.

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2 years ago
A one-hectare pond is sampled in early September. The sample yields 1 small catfish as well as 17 benthic invertebrates that rep
zaharov [31]

Answer:

e.) the biodiversity of the pond has decreased

Explanation:

Biodiversity or biological diversity refers to the variety of living organisms in a particular area. It can be a measure of number of species of living organisms in that area. The more the number of species, the higher the diversity and vice versa.

<em>Adjacent development close to the pond can be viewed as habitat disturbance. Habitat disturbance affects biodiversity in a number of ways including:</em>

  • <em>A shift in the species composition of the habitat</em>
  • <em>Outright extinction of certain species from the population</em>

<em>Overall, the species diversity become reduced as a result of a shift in species composition of extinction of some species. Hence, the best indicator of habitat disturbance is a decrease in biodiversity of the habitat.</em>

The correct option is e.

4 0
2 years ago
A woman in her 60s is rushed to the emergency department (ED) after having lost consciousness at a Singing Christmas Tree event.
masha68 [24]

Answer:

A is the answer. She forgot to eat

Explanation:

Hunger is one the early symptoms of people who has hypoglycemia. Hypoglecemia is having low sugar in the blood and if there is any secretion of insulin from any part of the body, it lower the sugar more and more which is not what we want.

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Which one of the following animals have air sacs attached to their lungs?
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Answer:

1

Explanation:

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