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Rainbow [258]
3 years ago
7

Senescence __________. Question 5 options: a) begins at the moment of conception and accelerates after age 40 b) occurs across a

ll parts of the body at the same time and speed c) begins once body structures reach maximum capacity and efficiency d) occurs because the physical body wears out from use
Biology
1 answer:
BigorU [14]3 years ago
5 0

Answer: c. Senescence begins once body structures reach maximum capacity and efficiency

Explanation: Senescence is simply ‘growing old’. Aging sets in at the time when physical development is complete - when a person reaches their ‘prime’. After that a person is ‘past their prime’ which is the subjective recognition of the on set of gradual deterioration. The biological rationale is that the purpose of life is to survive to reproductive age and to reproduce, and in some species to assist progeny to survive to reproductive age. Beyond that, survival has limited value.

An analogy is the length of an elephant’s trunk. It is as long as it needs to be, determined by natural selection, but no longer than it needs to be for optimum efficiency, again determined by natural selection.

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4. What does a total solar eclipse look like from Earth?
EastWind [94]

4. When you look up to the sky, it appears as a dark circle with  halo light at its edges moving across the face of the sun. As it does, depending on the relative position of the person on earth – that determines where they are on the umbra or penumbra of the eclipse, the place becomes a daytime twilight (umbra) or partial twilight (penumbra).

5. A new moon is formed when the moon is in between the sun and the earth. This is converse to the case of a lunar eclipse where the earth is between the sun and moon. In a new moon, the face of the moon that is faced towards the earth is dark because it is not lit by the sun. It is important to note that a solar eclipse is not formed because the moon’s orbit, around the earth, is tilted at an angle.

5 0
3 years ago
What nitrogen base is found on RNA but not DNA?
kumpel [21]
DNA<span> and </span>RNA<span> are both comprised of nucleotides that bind to a sugar backbone. The </span>DNA<span> nucleotide </span>bases<span> include adenine, cytosine, guanine and thymine. The </span>RNA <span>nucleotide </span>bases<span> include adenine, uracil, guanine and cytosine.</span>
8 0
3 years ago
Read 2 more answers
What is the weakest bone in your body?​
nexus9112 [7]

Answer:

<u><em>stapes</em></u>

The stapes is the smallest and lightest bone in the human body and is so-called because of its resemblance to a stirrup (Latin: Stapes).

Explanation:

I hope that this answer has helped you to more thoroughly understand your question asked. If you have any further questions, please do not hesitate to ask them below.      

Have a great rest of your day/night!

8 0
3 years ago
BRAINLY please help
valentinak56 [21]
The answer for your question is C
5 0
3 years ago
Read 2 more answers
Plz answer I really need help lots of points I'm begging ​
mr_godi [17]

Answer:

Lets consider the dominant allele to be represented by T and the recessive allele to be represented by t.

The punnet square can hence be completes as:

        T         t

T     TT      Tt

t       Tt       tt

The blanks can be filled as:

1: t

2: T

3: Tt

4: T

5: Tt

6: t

7: TT

8: Tt

9: tt

10:Tt

4 0
3 years ago
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