Question: Q: For each initial glucose molecules, two pyruvate molecules will enter where? Read this paragraph and choose the correct option from the provided answers: Aerobic respiration begins with the entry of the product of glycolysis, pyruvate, into the mitochondria. For each initial glucose molecules, two pyruvate molecules will enter the mitochondria. Pyruvate, however, is not the molecule that enters the Krebs cycle. Prior to entry into this cycle, pyruvate must be converted into a 2-carbon acetyl-CoenzymeA (acetyl-CoA) unit. The conversion of pyruvate into acetyl-CoA is referred to as the pyruvate dehydrogenase reaction. It is catalyzed by the pyruvate dehydrogenase complex. This process produces one NADH electron carrier while releasing a CO 2 molecule. This step is also known as the link reaction or transition step, as it links glycolysis and the Krebs cycle. Of course, as two pyruvates result from glycolysis, two acetyl-CoAs are produced as are 2 NADH molecules. Choices: - the plasma - the nucleus - Golgi apparatus - the mitochondria A:
Answer: the mitochondria

Question: Q: What technique is used by insects and birds to find food, mates, and safety from predators? Read this paragraph and choose the correct option from the provided answers: Other than insects, virtually no other animals can inhabit the airy world. Flying is a sure-fire way to escape from all but the quickest nonflying predators. Flying also gives birds a good view for finding food and mates. Choices: - playing - sleeping - mating - flying A:
Answer: flying

Question: Q: At what point can nutrients enter or exit an ecosystem? Read this paragraph and choose the correct option from the provided answers: Nutrients can enter or exit an ecosystem at any point and can cycle around the planet. Choices: - Largest Population Point - Longest Point - Hottest Point - any point A:
Answer:
any point