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allochka39001 [22]
3 years ago
13

Chains of blank form polymers?

Biology
1 answer:
Alja [10]3 years ago
3 0

Answer:

Chains of linked carbon and hydrogen atoms

Explanation:

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During the carboniferous period, forests consisting mainly of __________ produced vast quantities of organic matter, which was b
andre [41]
Forests consisted mainly of ferns

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The function of chordae tendineae is:
Free_Kalibri [48]

Answer:

The correct answer will be option-E.

Explanation:

Chordae tendinae are the string-like structure in the heart which is composed of dense regular connective tissue called collagen and elastin proteins. They arise from the papillary muscles of the heart and branches out in the ventricle portion of the heart.

These play an important role in the closure of the AV valves to prevent the backward flow of the blood to the atria during ventricular contraction by holding cusps of the valve into the dome-shaped structure.

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Which of these organic molecules functions to help speed up biological chemical reactions?
ioda


The best answer is  B - Proteins.

Proteins make up enzymes, or to put it another way enzymes are made up of protein. It is enzymes that speed up the chemical reactions. Enzymes are organic catalysts, substances that speed up a (biochemical) reaction but do not take part in the reaction and remain unchanged at the end of the reaction.

In man, there are many enzymes. The majority of these are found in the digestive system where they greatly aid the process of food breakdown from complex molecules to simple molecules. Examples include salivary amylase found in saliva,  which begins the gradual breaking down of starch into glucose right from the moment food is placed in the mouth and mixed with saliva. Pepsin in the stomach breaks down protein.

8 0
3 years ago
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Which of the following events could cause a trisomy in a diploid zygote?
elena-s [515]

Answer:

In a diploid zygote, the cause of trisomy is two sister chromatids remain joined during meiosis II (option B).

Explanation:

At the end of meiosis I, each daughter cell contains a chromosome formed by sister chromatids, each of which must be separated in meiosis II to form the gametes with a chromosome charge equivalent to half the chromosome charge of the species.

The result of the sister chromatids not separating in meiosis II -by not disjunction- results in a gamete with an extra chromosome, which when joined to another gamete results in a zygote with an additional chromosome, which is considered an aneuploidy, called trisomy.

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Trisomy brainly.com/question/484286

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Fungal cells are similar to plant and animal cells in that they have a nucleus, cell membrane, cytoplasm and mitochondria. :)

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