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Questions in biology

📝 Answered - Which of the following is most likely to do the least damage to a cell? A) Frameshift mutation B) Nonsense mutation C) Missense mutation D) All are always lethal

📝 Answered - In some bees, thin stripes $(S)$ are dominant over thick stripes $(s)$, and black eyes $(B)$ are dominant over gray eyes $(b)$. Complete a dihybrid cross for parents with the genotypes SsBB and ssBb and determine the likelihood of offspring with the genotype ssBB.

📝 Answered - Joe denied being the father of Lisa. Lisa's mom took Joe to court to prove he is Lisa's biological father. The way to prove this would be by: A. DNA profiling B. recombinant DNA C. hybridization D. cloning

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - Which of the following is NOT correct about the small intestine? A. It contains villi. B. It absorbs water. C. It secretes digestive enzymes. D. It absorbs most nutrients.

📝 Answered - The fact that women who have not had children live longer than others with the same health habits is consistent with which theory of aging? A. wear-and-tear B. cellular-aging C. genetic adaptation D. cellular-error

📝 Answered - What occurs during the latent period of a muscle twitch? A. Action potentials are taking place, leading to internal mechanical changes. B. Muscle fibers relax completely. C. The muscle contracts immediately with maximum strength. D. Calcium ions return to the sarcoplasmic reticulum.

📝 Answered - What plant does modern day corn come from? A. Teosinte B. Fiber crops C. Sunflowers D. Mustard family

📝 Answered - What term describes the movement and absorption of nutrients and water in plants? A. Assimilation B. Active transport C. Passive transport D. Food energy

📝 Answered - What will happen to the reaction if you add a certain inhibitor or activator to the substrate having allosteric enzyme set up? A. Activator binds to active site to initiate the reaction. B. Activator binds to regulatory site to activate the reaction. C. Inhibitor binds to active site to speed up the reaction. D. Inhibitor binds to regulatory site to increase rate of reaction. Sleeping sickness is transmitted by A. eating contaminated food. B. droplet infection. C. biting of tsetse flies. D. sexual intercourse.