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slega [8]
3 years ago
9

James is riding a bike down a hill. As he gets to the bottom, he applies the brakes to stop the

Biology
1 answer:
Gennadij [26K]3 years ago
8 0

Answer:

The answer is D.

Explanation:

The friction of the brake rubbing the rim of the front tire causes the bike to slow down and stop.

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What is the process of oxygen molecules in the human cell
dmitriy555 [2]
That process is known as Respiration in which oxygen get exchanged from the carbon dioxide by alveoli...
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3 years ago
After the bases of DNA were identified, Erwin Chargaff analyzed the percentages of adenine, thymine, guanine, and cytosine in th
frutty [35]

Answer:

D) A = T; G = C

Explanation:

Chargaff's rules state that "DNA from any cell of any organisms should have a 1:1 ratio (base Pair Rule) of pyrimidine and purine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine".

This pattern is noticed in the DNA strands.

8 0
3 years ago
"Generally describe the series of events via which pyruvate is further processed after glycolysis (assume that this is in the pr
kobusy [5.1K]

Answer:

The product of glycolysis is two molecules of pyruvate. It is a three-carbon compound. This pyruvate again undergoes oxidation in the cytoplasm. This process is called pyruvate oxidation which produces Acetyl CoA. The Acetyl CoA is a two-carbon molecule.

Acetyl CoA again used for the citric acid cycle. This is also called as Kreb's cycle / TCA cycle. Because citric acid has 3 carboxylic groups. The acetyl coenzyme produces NADH, FADH2, ATP. The citric acid cycle occurs in the mitochondrial membrane. This is an 8 step process. The first product is citric acid. The other products of each step are isocitrate, alpha-ketoglutarate, succinyl CoA, succinate, Fumarate, L - malate, and Oxaloacetate (OAA).

Another process of aerobic respiration is the electron transport chain ( ETS). Here the energy stored in NADH, FADH2 in the citric acid cycle are utilized. It is a chain of electron carriers. ETS occurs in the inner membrane of mitochondria.  

In short, the glucose splits by glycolysis and produces ATP, NADPH, and final product pyruvate. The pyruvate is oxidized and forms acetyle coenzyme. This is used in the TCA / citric acid cycle. In this process also NADH, FADH2 which forms electrons are produced. Theses electrons are carried by different electron carriers and accepted by oxygen.

In the process of pyruvate oxidation 6 ATP, and in Kreb's cycle 18 ATPs, in ETS, 4 ATPs are produced. In addition to this in glycolysis produces 4 ATPs. The total number of ATP in aerobic respiration is 32 ATP.  

8 0
2 years ago
1.Butter is an example of
borishaifa [10]

Answer: The Answer is D.

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8 0
3 years ago
1. List the Biomes seen in the above example. Explain why adaptations are needed for each biome.
shtirl [24]

Answer:    i dont understand can u DM me

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