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Alekssandra [29.7K]
3 years ago
14

A scientist extracts a molecule from a cell that includes phosphorus, a nitrogen base and a sugar. What macromolecule did the sc

ientist most likely extract to
study?
A. Carbohydrate
B. Protein
C. Triglyceride
D. Nucleic Acid
Biology
1 answer:
rewona [7]3 years ago
7 0

Answer:

D

Explanation:

The correct answer would be <u>Nucleic Acid</u>.

A typical nucleic acid has 3 components which include:

  1. A purine or pyrimidine nitrogenous base
  2. A phosphate group
  3. A 5-carbon sugar

The purine base includes adenine and guanine while the pyrimidine base includes thymine/uracil and cytosine. The 5-carbon sugar could be ribose or deoxyribose depending on if the nucleic acid is ribonucleic or deoxyribonucleic acid.

<em>The only macromolecule that contains the 3 components of the options A to D is the nucleic acid. Hence, the correct option is </em><em>D.</em>

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The frog pictured above is larger than 1.5 inches and smaller than 6 inches. Use this information, along with the dichotomous ke
vazorg [7]

Answer:

According to the characteristics given and what the image shows, the species to which the frog corresponds is Bufo boreas.

Explanation:

Options for this question are:

  • <em>Bufo marinus .</em>
  • <em>  Litoria caerulea .</em>
  • <em> </em><em>Bufo boreas. </em>
  • <em> Acris crepitans.</em>

Bufo boreas is a species belonging to the family Bufonidae, very common in North America, constituting an anuro amphibian.

The appearance of B. boreas is that of a thickened and irregular skin, due to multiple warts found on its surface. Additionally it has a stripe or line in its dorsal region, which extends from the head to the tail.

These characteristics, together with the description given, make it possible to establish that B. boreas is the species that can be observed in the picture (see image).

6 0
3 years ago
Which of the following is true of cells in batch culture? Cells never reach exponential growth rates. Metabolic wastes do not ac
Nataly [62]

Answer:

Option (3).

Explanation:

Batch culture may be defined as a type of culture which are refereed as stack and operated as influx of the reactant up to the maximum level. This technique is generally used to grow the micro organisms.

The cell mass do not decrease or increases as the cell divides in the batch culture. The new batch are added during the culturing process. The cell mass remains constant in batch culture.

Thus, the correct answer is option (3).

7 0
3 years ago
Circadian rhythm refers to
strojnjashka [21]

Answer:

The correct option is B) a pattern of biological functioning that occurs on a 24-hour cycle.

Explanation:

Biological rhythm is defined as the regular variation of an organic function related to the course of time, circadian biological phenomena (around the day), are those with a period of approximately 24 hours.

Circadian rhythms are physical, mental and behavioral changes that follow a daily cycle (the biological rhythm), and that respond primarily to light and darkness in an organism's environment. This cycle close to 24 hours, allows to recognize the sleep-wake phenomena and their homeostatic action, in the systemic processes of every living being. The circadian system is composed of photoreceptors, pacemakers and efferent pathways that allow a regular functioning of the sleep and wakeful state.

5 0
3 years ago
In the skeletal system which are the two main tissue is responsible for structural support in the body
Anettt [7]
I believe it would be Bone Tissue and Connective Tissue
8 0
4 years ago
Read 2 more answers
Displacement of brain tissue under the falx cerebri or through the tentorial notch of the tentorium cerebelli is termed ____, an
algol13

Brain herniation is displacement of brain tissue under the falx cerebri under the area of less pressure.

Brain herniation

Less

<u>Explanation:</u>

Brain herniation is disorder it occur due to the displacement of the cerebra in the brain.  It is potentially deathly disorder when brain affected by high temperature or squeezing of the brain across the structure.

The tentorium is the dual fold in the brain, then it  is an extension of the dura matter that separates cerebellum from cerebrum. There are two major types of herniation in the brain; that is supratentorial and infratentorial. The supretentorial is seen above the Tentorial notch.

3 0
3 years ago
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