People who are carriers of the sickle-cell allele a. are heterozygous, carrying
ID: 89381 • Letter: P
Question
People who are carriers of the sickle-cell allele a. are heterozygous, carrying a sickle-cell allele and a non- mutated (non-disease related) allele. b. do not suffer from sickle-cell anemia c. produce functional and non-functional hemoglobin. d. are homozygous for the sickle-cell allele. Which process will normally proceed whether oxygen is present or absent? a. Electron transport b. Glycolysis c. Krebs cycle d. Oxidative phosphorylation In addition to ATP, what else is an end product of glycolysis? a Pyruvate b. Electron Transport Chain c. Acetyl Co-A d. Lactate In the reaction that produces lactate (XH_2) and NAD^+ from pyruvate (X) and NADH + H^+, which product molecule is in the reduced state following the reaction? a. pyruvate b. lactate c. NAD^+ Lactate fermentation occurs a. in the presence of pyruvate and oxygen. b. in the presence of pyruvate and absence of enough oxygen. c. in the presence of oxygen and absence of pyruvate. d. with oxidative phosphorylation. ATP synthase enzymes are embedded within the inner membrane of the mitochondrion. ATP synthases are able to generate ATP following the flow a. of electrons through the enzyme. b. of hydrogen ions through the enzyme. c. of NADH through the enzyme. d. of ATP through the enzyme. The ATP made directly during glycolysis is generated with the help of a. kinase enzymes. b. dehydrogenase enzymes. c. NADH. d. NAD+.Explanation / Answer
Answer 1: a (As explained below)
People who have one normal gene and one sickle cell gene will not have the disease but will be carriers of the sickle celled trait, capable of passing on the trait to the subsequent progenies.
Answer 2: b (As explained below)
During anaerobic respiration, NAD is reoxidised and accepts 2H in Glycolysis. Subsequently, glycolysis releases 2ATPs without oxygen.
Answer 3: a (As explained below)
Glycolysis produces 2 pyruvates and 2 NADH alongwith 2 ATPs.
Answer 4: c (As explained below)
Lactate Dehydrogenase dehydrogenates Pyruvate to produce Lactic Acid. Pyruvate accepts 2H and subsequently NADH > NAD + 2H. NAD is in the reduced state following the reaction.
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