In light of increasing antibiotic resistance, alternative antimicrobial therapies are being explored. These include the CRISPR system, which ____
A. When delivered with an antibiotic, can splice out the genes causing resistance to the drug, which is then able to kill the bacteria
B. Directly kill the bacteria instead of requiring an antibiotic
C. Is comprised of immune peptides that are not susceptible to bacterial resistance
D. Extracts drugs from bacteria that are not cultivable in a laboratory environment
Answer: A. When delivered with an antibiotic, can splice out the genes causing resistance to the drug, which is then able to kill the bacteria
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What is the fate of electrons from NADPH during the Calvin cycle?
a. They are accepted by molecular oxygen, just like in cellular respiration. b. They are used to regenerate RuBP from G3P c. They are added to 3PGA. d. They are transferred to rubisco. e. They remain on NADPH to help drive the light reactions
The lateral line system provides ________ with a sense of "distant touch," enabling these animals to sense objects that reflect pressure waves and low-frequency vibrations.
A. adult amphibians B. reptiles C. birds D. mammals E. fish
How do the lungs absorb oxygen from the air while releasing carbon dioxide from the blood?
a. Oxygen diffuses into capillaries passively, while carbon dioxide is expelled from the body by the action of respiratory enzymes. b. Transport proteins in the plasma membranes of alveoli cells actively transfer oxygen into the blood and carbon dioxide into the lungs. c. Partial pressure gradients between alveoli and capillaries cause oxygen and carbon dioxide to diffuse in opposite directions. d. Carbon dioxide is not present in capillaries; it is synthesized from oxygen within the alveoli cells within the lungs.
The theory of island biogeography predicts that the extinction rate is greater on large islands than on small islands
Indicate whether the statement is true or false