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The critical element here is that building materials that need to be absorbed, or waste materials that need excretion have to cross the cell membrane. The larger the surface of the cell's membrane relative to its volume, the faster the exchange rate. The book section you linked in the comments mentions the following on p.14: The volume [of a spherical ...


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Agree with the answer by @A.Kennard. Here's a punnet square to clarify your answer further.


2

Your classmate is forgetting that the child will have to inherit one allele (A or a) from each parent. Suppose the dad is affected---so his genotype is Aa. He has a 50% chance of passing the A on to his kid. That means the kid has a 50% chance of being affected. If your classmate was right, then it would be possible for both the kid's alleles to come from ...


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Short answer Adverse stimuli in general are accompanied by contraction of facial muscles. It is part of our repertoire of emotional expressions. Background A disgusted expression and the expression of pain are both accompanied by squinting. Disgusting stimuli include your example of a sour taste, but also include other adverse tastes (bitter) or visual ...


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Even though you - or the problem did not clarify, I assume in my answer that you work with eukaryote system, even though the principle of the replication is the same. dNTPs do have an OH group on their 3rd carbon atom (for eg. check this wiki-page for dCTP) so I don't think that's the issue here. My guess is that the first tube contains the radio labeled ...


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You are correct, Thalassemia is the wrong answer. In Thalassemia and Sickle Cell Anemia, the structure of Hemoglobin is altered. Chronic Blood Loss: Here the hemoglobin and packed cell values will be low, however there is no alteration in structure of either RBC or Hemoglobin Hemolytic Anemia: This is a host of conditions which can cause hemolytic anemia. ...


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Short answer (A) is a possible answer and is indeed cause for fatigue, as pyruvate is needed for the Krebs cycle to run. The krebs cycle is an essential step in the generation of ATP in aerobic organisms. (B) is incorrect because NADH is never transported into the mitochondria in any organism (it is a nonsense answer). Background NADH is not transported ...



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