Researchers conducted a study concerning cellular transport in animal cells affected by mitochondrial

Biology

1 answer:

Shtirlitz [24]3 years ago

3 0

Answer: Cellular transport independent of ATP like osmosis and difussion (Simple and facilitated).

Explanation: The animal affected has a mitochondrial disease that affects its capacity of ATP production, thus, the animal active transport will be afected since require ATP. On the contrary, the animal passive transport will be functional because its independent of ATP, like osmosis which is water transport in favor of concentration gradient and facilitated diffussion of small molecules.

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True or false? investigators trying to track the early spread of hiv found hiv-infected blood samples from as early as 1956, in

Anastasy [175]

False
The diseases, announced by Dr. Stig Froland, Dr. Paul Jenum and associates, shows that AIDS happened in disengaged occasions far and wide some time before general wellbeing authorities saw it years back.
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4 years ago

Would we have the Same countries If Pangea existed? And would we look the same?explain please

Natalija [7]

I don’t think we would have the same countries. i feel like everything would be connected, like maybe a few really big countries instead of hundreds of different countries. i feel we would look different that how we already look because there would be more of different type of people around each other, resulting in mixed race reproducing.

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3 years ago

Which protein inhibits interaction between actin and myosin to prevent skeletal muscle contraction; and which ions remove the in

zloy xaker [14]

Answer:

Tropomysin, calcium

Explanation:

Tropomysin is a protein that prevents muscle contraction hence acts as a contraction inhibitor. It wraps around the actin blocking the binding sites for myosin on the actin.

Muscle will only contract when they get a rush of calcium ions.

The calcium ions binds to troponin, the troponin changes its shape. The change in shape will remove tropomyosin from the binding sites allowing myosin to bind on the actin leading to muscle contraction.

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List the principal structures of the ventilatory system in the order that air passes from the atmosphere into the lungs

emmasim [6.3K]

Nose, Mouth, Pharynx, Larynx, Trachea, Bronchi, Bronchioles, Lungs, Alveoli.

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3 years ago

The percentage of the adenine (A) nucleotide in a particular organism's genome is 30%. The percentages of the other nucleotides

pav-90 [236]

Answer:

B. 30%T, 20%G, 20%C

Explanation:

The Chargaff rule states the relationship in DNA molecules based on nucleotide composition. It is based on the fact that in a double-helical DNA molecule, a purine base of a strand always pairs with a pyrimidine base of the other strand. According to the Chargaff rule, the number of adenine bases equals the number of thymine bases, and the number of guanines equals the number of cytosines.

According to the given information, the percentage of adenine (A) in the DNA of a particular organism is 30%. This means that the DNA of this organism would have 30% of thymine nucleotides. Out of total 100% DNA nucleotides, the proportion of guanine + cytosine nucleotides= 100- (30 + 30) = 100-60= 40.

In a double-helical DNA, the number of guanines equals the number of cytosines. Therefore, the percentage of guanine and cytosine nucleotides each= 40/2=20%

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4 years ago