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Ainat [17]
3 years ago
15

Alveolar type ________ (VIII) cells are responsible for producing surfactant

Biology
1 answer:
lord [1]3 years ago
5 0

Answer:

Type II cells

Explanation:

Type II alveolar cells are the round-shaped or cuboidal epithelial cells. These cells have a free surface with microvilli. The function of the type II alveolar cells is to secrete the alveolar fluid to keep the surface of the cells moist.

A mixture of phospholipids and lipoproteins is present in the alveolar fluid that serves as surfactant and reduces the surface tension of the alveolar fluid. The overall effect of the presence of surfactant in alveolar fluid is to protect the alveoli against collapsing during exhalation.

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Nitrogen is a very important element in biology. What are some of the reasons that organisnm needs nitrogen?
djverab [1.8K]

Answer:

Nitrogen is a crucially important component for all life. It is an important part of many cells and processes such as amino acids, proteins and even our DNA. It is also needed to make chlorophyll in plants, which is used in photosynthesis to make their food.

7 0
2 years ago
The liver forms glucose from noncarbohydrates. stores vitamin
Viefleur [7K]
<span>The propositions are:
a. forms glucose from </span><span>noncarbohydrates
b. does all of these
c. destroys damaged red blood cells
d. stores vitamin D
e. forms urea

The right answer is: B. </span>does all of these

*The liver plays a role in the metabolism of carbohydrates:- gluconeogenesis (manufacture of a new glucose molecule from a non-carbohydrate molecule);- glycogenolysis (release of glucose from glycogen) under the effect of glucagon;- gluconeogenesis (storage of glucose in the form of glycogen) under the effect of insulin
*It stores fat-soluble vitamins (A, D, K and E) and glycogen.*It converts ammonia to urea (detoxification)<span>*It recycles substances from the senescent red blood cells.</span>
4 0
3 years ago
The earthquakes experienced in California are related to tectonic plates because these catastrophic events are the result of -
ahrayia [7]

Answer:

A when two tectonic plates slide past each other.

Explanation: this answer is the most accurate because when two plates slide past each other they make a fault in the earth which creates an earthquake.

4 0
2 years ago
Which is an example of an insertion mutation that changes all of the amino acids that follow the mutation?
astra-53 [7]

Answer:


2) CAG - TTC - ACG mutates to CAG - TTC - ACC - ACG

Explanation:

Insertions are mutations in which extra base pairs are inserted into a new place in the DNA. The number of base pairs inserted can range from one to thousands!

In option no. 1: We see that there is not addition of a single or more than one base, but the new base sequence is different from the original sequence at three places i.e: TTA - CAC - G

In option no. 2: The insertion of three bases ACC has been made exactly after TTC, the whole sequence and arrangement of bases remain same except this insertion.


In option no. 3: The first base of the sequence T is replaced with A, and all other sequence is same. This type of mutation is called substitution in which one base is replaced by other.


In option no. 4: The last base of the sequence C is deleted, and is not present in new sequence. This type of mutation is called deletion in which a base is removed from the sequence.


Conclusion: Therefore, the best option is 2, in which whole codon is inserted in the DNA base sequence.



7 0
2 years ago
Read 2 more answers
Imagine that you are a scientist who has discovered a new object. You want to find out if the object is biotic or abiotic. You o
coldgirl [10]

Answer:

the answer is the object cannot create energy

Explanation:

i just got it right on my quick check

5 0
2 years ago
Read 2 more answers
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