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Nat2105 [25]
3 years ago
8

Antioxidants help prevent damage to our cells caused by oxygen molecules that are formed by normal metabolic processes. those mo

lecules are also known as
Biology
1 answer:
arsen [322]3 years ago
4 0
<span>These molecules are called free radicals. Free radicals have an unpaired electron which can damage our cells. Antioxidants prevent damage by pairing an electron with the unpaired electron, or by neutralizing the free radical module. Eating a balanced diet rich in fruits and vegetables can provide the antioxidants people need.</span>
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Henrietta is in the fifth week of her pregnancy, which means that she is in the _____ period of prenatal development.
Talja [164]

Answer:

Embryonic period

Explanation:

The time period of the growth of the baby in the womb of the mother of human is 38 weeks or 9 months.

The time period of 38 weeks is divided into three phases related to the events taking place in that period which are: the germinal period, embryonic period and the fetal period.

  • The germinal period lasts from the implantation to the gastrula phase during which the germ layer begins to form that is in the first and second week.
  • The embryonic phase begins after the second week and lasts about the eighth week which is marked by the phase of embryonic and differentiation.

Therefore, in the fifth week she is in the embryonic phase of prenatal development.

8 0
3 years ago
In the year 2500, five male space colonists and five female space colonists (all unrelated to each other) settle on an uninhabit
iris [78.8K]

Answer:

The correct answer is genetic drift.

Explanation:

The phenomenon of changing the frequency of an allele in a specific population with time is known as genetic drift. The mentioned gene variation or the modification in the frequency of the allele is required to take place abruptly so that the phenomenon of genetic drift can take place. The environmental factors do not play an essential role in the phenomenon of genetic drift to take place.  

The process of genetic drift occurs generally due to random sampling of organisms, it illustrates the random change in the number of gene variants within a population. When the existence of the different forms of a gene, that is, alleles, enhances or reduces by chance with time within a population, the phenomenon of genetic drift occurs. Thus, the mentioned case is an illustration of genetic drift.  

7 0
3 years ago
Last question, how many dog breeds are there in the world?
RoseWind [281]

Answer:

American Kennel Club = 202 dog breeds

Kennel Club = 211 dog breeds

Federation Cynolgique Internatioinale = 344 breeds

7 0
3 years ago
Calories in food are related to calories in physics because
nevsk [136]

I think that they both measure energy

7 0
3 years ago
Read 2 more answers
Which statement best describes how Channel and carrier proteins in the plasma membrane are similar
olganol [36]

Carrier and channel proteins in the plasma membrane are similar because they are both transport membrane proteins that allow molecules to flow in and out of the membrane. Meanwhile, carrier protein can further be classify as active or passive transport. These two transport proteins makes cell’s ability to perform their functions well by maintaining a difference between the intracellular and extracellular environment.

3 0
3 years ago
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