BSC1005 MIDTERM MDC NEWEST ACTUAL EXAM COMPLETE 100 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+

1 | P a g e BSC1005 MIDTERM MDC NEWEST 2024-2025 ACTUAL EXAM COMPLETE 100 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+ Cellular respiration can be described as the conversion of the energy _____. - CORRECT ANSWER-Stored in food molecules to energy stored in ATP. Read the following scenario to answer the following question(s). The earliest cells detectable in fossils were different from the cells in animals, plants, fungi, and protists living today. These first prokaryotic cells gave rise to eukaryotic cells approximately 1.7 billion years ago. The structure of eukaryotic cells today suggests how they might have evolved from their prokaryotic ancestors. Scientists examining mitochondria and chloroplasts now think that these organelles were probably free-living prokaryotes before becoming a part of eukaryotic cells long ago. Which of the following is a characteristic of chloroplasts that suggests that they might have evolved from free-living bacteria? - CORRECT ANSWER-Chloroplast have their own DNA. 2 | P a g e The region of an enzyme to which substrate binds is called the ____ site. - CORRECT ANSWER-Active. The sum total of all the chemical reactions that occur in organisms is called ______. - CORRECT ANSWERMetabolism. Which of the following structures manufactures the components of ribosomes? - CORRECT ANSWER-Nucleus. Why is glycolysis considered to be one of the first metabolic pathways to have evolved? - CORRECT ANSWER-It does not involve organelles or specialized structures, does not require oxygen, and is present in most organisms. In cellular respiration, most ATP is produced directly as a result of _____. - CORRECT ANSWER-The movement of hydrogen ions across the mitochondrial membrane. During redox reactions, _____. - CORRECT ANSWERElectrons are lost from one substance and added to another substance. 3 | P a g e How many carbon atoms are fed into the citric acid cycle as a result of the oxidation of one molecule of pyruvate? - CORRECT ANSWER-Two Which of the following intermediary metabolites enters the citric acid cycle and is formed, in part, by the removal of carbon (CO2) from one molecule of pyruvate? - CORRECT ANSWERAcetyl CoA A child is born with a rare disease in which mitochondria are missing from certain skeletal muscle cells. Physicians find that the muscle cells function. Not surprisingly, they also find that ______. - CORRECT ANSWER-The muscles contain large amounts of lactic acid following even mild physical exercise Which part of cellular respiration produces the most NADH? - CORRECT ANSWER-Citric acid cycle. A product of glycolysis is ____. A) Lactic Acid B) Ethyl Alcohol C) NAD+ D) O2 E) Pyruvic Acid - CORRECT ANSWER-Pyruvis Acid.