Many of the antiviral drugs currently used to treat HIV/AIDS also interfere with an enzyme that helps mitochondria multiply. Treatment can therefore result in a decrease in the number of mitochondria found in certain tissues. Given this information, what might you expect to see in patients treated with antiviral drugs?
A. An increase in NADH dehydrogenase activity
B. An increase in oxidative phosphorylation
C. An increase in lactic acid levels
D. An increase in phosphofructokinase activity
Answer: C
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It is your task to prove the chromosomal theory of inheritance in your cell biology class. Your task is limited by examining only one trait in Drosophila. You may use the tools of modern biotechnology to aid you in your progress. Which of the following would be least likely to help you in your endeavor?
A) examining a trait that is the genotype AA in all of the available parental stocks B) examining a trait that is the genotype AA or aa in all of the available parental stocks C) DNA sequence analysis D) protein sequencing E) genetic manipulation to add a marker to a particular chromosome in the germline
If fermentation pathways follow glycolysis,
a. CO2 will be one of the products as pyruvate is converted to lactate. b. the two NADH molecules produced during glycolysis will (depending on the organism) be used to reduce pyruvate to either lactate or ethanol and CO2. c. ATP will be required to convert pyruvate to either lactate or ethanol and CO2. d. oxidative phosphorylation occurs either on the plasma membrane or on derivatives of the plasma membrane. e. none of these will occur
Which of the following does not function as a site of active cell division?
A. Shoot apical meristem B. Root apical meristem C. Parenchyma meristem D. Cork cambium
Identify the structure that does NOT have a double membrane protecting it.
A) nucleus B) chloroplast C) mitochondria D) ribosome