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Grace [21]
3 years ago
15

Which of the following is NOT true regarding the members of a protein family in general?a. They have similar three-dimensional c

onformations.b. They share an ancestry; i.e. they are homologs.c. They can functionally replace each other.d. Their gene sequence is less well conserved than their structure.e. Over evolutionary time scales, the family has expanded mainly through gene duplication events.
Biology
1 answer:
natka813 [3]3 years ago
7 0

Answer:

d. Their gene sequence is less well conserved than their structure.

Explanation:

The fundamental definition of a protein family is that they need to be homologous or share strong sequence identity/similarity.

Whereas a protein superfamily encompasses proteins that may not be homologous but share similarities in their structures.

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Synthetic forms of the male hormone testosterone that are used to cause muscle hypertrophy are called _______
Greeley [361]
Anabolic steroids are synthetic forms of the male hormone testosterone that are used to cause muscle hypertrophy.

It is properly knowns as anabolic-androgenic steroids (AAS). They are anabolic in nature and increases the protein found within the cells especially in the skeletal muscles. It also has varying degrees of androgenic and virilizing effect which includes inducing the development and maintenance of male secondary sexual characteristics such as facial and hair body growth.

In the 1930s AAS were synthesized and are recently used as a therapeutic medicine to stimulate muscle growth, increase appetite, induce puberty in males and treat wasting conditions among cancer and AIDS patients. It was also acknowledged by the American College of Sports Medicine that AAS, when joined with an adequate diet, can contribute to increasing the body weight, often as lean mass increases and the gains in muscular strength are achieved by doing high-intensity workout and proper diet.


5 0
3 years ago
Read 2 more answers
Look at the reaction below.
Ray Of Light [21]

Answer:

Ca(OH)2 (aq)

Explanation:

The balanced neutralization reaction i.e. a reaction between an acid and a base, in this question is given as follows:

H2SO4(aq) + Ca(OH)2(aq) → CaSO4(aq) + 2H2O(l)

According to Arrhenius in his definition of acid and base, a base is a substance that dissociates into hydroxide ions (OH-) when in an aqueous solution. In other words, a base increases the concentration of hydroxide ions when dissolved.

In this reaction, Ca(OH)2 releases the OH- (hydroxide ion) that combines with the hydrogen ion (H+) released by the acid, H2SO4, to form water (H2O). Hence, Ca(OH)2 (aq) is the BASE.

4 0
3 years ago
PLEASEE HELPPP!!!!
dusya [7]

Answer:

<em>The correct option is B) Freshwater snails and small fish</em>

Explanation:

As we can see from the food web, the fresh water snails and the small fishes both feed on algae and water plants as their source of food hence, both these organisms feed on the same food.

Other options, like option C, is not correct because water boatman and water plants do not feed on the same sources. Water boatman feeds on reeds whereas water plants do not. Water plants will make their own food.

8 0
3 years ago
What is the structures which line up in the middle of the cell during METAPHASE? Question 3 options:
oee [108]

Answer:

During metaphase, the cell's chromosomes align themselves in the middle of the cell through a type of cellular "tug of war." The chromosomes, which have been replicated and remain joined at a central point called the centromere, are called sister chromatids

3 0
3 years ago
Match each nutrient to its description. vitamin E fiber calcium phosphorous cholesterol mineral involved in the process through
umka2103 [35]

<u>Answer</u>: please find below the correct matches

<em>vitamin E</em> - antioxidant that protects cells from damage and promotes healthy skin

<em>fiber</em> - carbohydrate that slows the absorption of sugars into the bloodstream

<em>calcium</em> - mineral found in every cell of the body and is involved in the formation of teeth

<em>phosphorous</em> - mineral involved in the process through which muscles contract and relax

<em>cholesterol</em> - lipid molecule produced by all cells in the body and that forms lipoproteins

3 0
3 years ago
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