Explain the relationship among homeostasis, defective mitochondria, and the symptoms caused by LHON.

Answers

Answer 1
Answer:

Answer:  The Leber's hereditary optic neuropathy (LHON) is caused by defective genes contained in mitochondrial DNA.

Explanation:

LHON is causes the vision loss. This occurs due to mutation in the mitochondrial DNA. The symptoms are not associated vision loss thus it is difficult to predict that which member of family was the carrier of the disease. Some people do not get completely blind. A young male is expected to develop a risk of 50% development of this disease.


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Which of the following is FALSE regarding the DNA double helix? a. The two strands exhibit complementary base pairing.
b. The four nitrogenous bases found in it are A, T, C and G.
c. The two strands are parallel.
d. The two strands are stabilized by hydrogen bonds and base stacking interactions.

Answers

Answer:

Which of the following is FALSE regarding the DNA double helix?

The two strands are parallel.

Explanation:

DNA strands are anti-parallel to one another which gives room for their complimentary factor to come in play.

Final answer:

The false statement is that the two strands of the DNA double helix are parallel. They are actually antiparallel, running in opposite directions.

Explanation:

The false statement regarding the DNA double helix is c. The two strands are parallel.

The correct statement is that the two strands of the DNA double helix are antiparallel. This means that one strand runs in the 5' to 3' direction, while the other strand runs in the 3' to 5' direction.

Complementary base pairing, involving the nitrogenous bases A, T, C, and G, is an essential characteristic of the DNA double helix. The two strands are held together by hydrogen bonds between complementary base pairs, as well as by base stacking interactions that result from the hydrophobic interactions between adjacent base pairs.

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Which of the following is true about the speed of light?O it is a constant when the light is traveling in a vacuum.
O It speeds up or slows down depending on the observer.
O It is slowest in a vacuum.
O lt varies depending on the color of the light.

Answers

Answer:

It is a constant when the light is traveling in a vacuum.

Explanation:

Zookeepers carry a stretcher that holds a sleeping lion. The total mass of the stretcher and lion is 175 kg. The lion's forward acceleration is 2 m/s2. What is the force necessary to produce this acceleration?

Answers

Final answer:

The force necessary to produce the acceleration of the lion is 350 N.

Explanation:

To find the force necessary to produce the acceleration of the lion, we can use Newton's second law of motion, which states that force equals mass multiplied by acceleration (F = m × a). In this case, the mass is the total mass of the stretcher and lion (175 kg) and the acceleration is given as 2 m/s2. Substituting these values into the formula, we get:

F = 175 kg × 2 m/s^2

Simplifying the calculation gives us the force necessary to produce the acceleration of the lion, which is 350 N.

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Answer:

350N

Explanation:

formula = Mass x Acceleration

= 175 x 2

= 350N

why I have N ( Newton) is because the unit of force is Newton.

Micah has straight hair. If he is homozygous for the gene that determines straight hair, what is true of his parents?

Answers

Answer:

They have contributed same allele for straight hair.

Explanation:

There are two conditions homozygous and heterozygous. In homozygous conditions both the allele of a particular gene is same in an offspring which means the offspring got two same alleles from its parent for a particular gene and if an offspring is heterozygous for a gene that suggests that the parent has contributed two different alleles for that gene in the offspring.

So If Micah is homozygous for straight hair then it can be concluded that his parents have contributed two same alleles for straight hair genes.

Final answer:

If Micah is homozygous for the straight hair gene, both of his parents must have contributed an allele for straight hair. They could be homozygous or heterozygous for this trait.

Explanation:

If Micah is homozygous for the gene that determines straight hair, it means he has two of the same type of allele for that gene - in this case, the allele for straight hair. This indicates that both of his parents must have contributed an allele for straight hair. The simplest scenario is that both of his parents are also homozygous for the straight hair allele. However, it's also possible that one or both parents are heterozygous, possessing one straight hair allele and one potentially recessive curly hair allele. In this scenario, they would have each passed the straight hair allele to Micah.

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During photosynthesis, the energy from sunlight is used to split water molecules. What happens to the hydrogen ions that are
split from the water molecules?

Answers

Answer: hydrogen is incorporated into glucose

Explanation:

6CO2 + 6H2O —> C6H12O6 + 6O2

What is missing from the food chain? ( look at number 7)

Answers

Answer:

decomposer

Explanation:

producer-consumer-decomposer