Release of T4 phage from host cells after assembly
A. occurs by exocytosis.
B. occurs by extrusion and does not result in cell lysis.
C. requires holin protein that allows the T4 lysozyme to attack the peptidoglycan.
D. depends on a protein that interacts with MurA and interferes with normal peptidoglycan synthesis.
Answer: C
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Which of the following statements is false?
A. Decreasing levels of oxygen in the blood are detected by chemoreceptors in the brainstem. B. Breathing is controlled by both voluntary and involuntary mechanisms. C. Chemoreceptors involved in the homeostatic control of breathing are located in the brainstem and the carotid and aortic bodies. D. Stronger or more frequent contraction of respiratory muscles helps to remove excess CO2 from the blood. E. As an organism's activity level increases, the level of CO2 in the blood will increase and stimulate faster or stronger breathing.
Giardiasis involves
A. vector transmission. B. symptoms of abdominal pain, flatulence, and diarrhea. C. a protozoan that does not form cysts. D. infection of the large intestine. E. All of the choices are correct.
bonds are formed between monomers to form a polymer
A. Hydrogen B. Nuclear C. Covalent D. Hydrophobic E. Ionic
An X-linked recessive gene (c) produces red/green color blindness. A normal woman whose father
was color blind marries a color-blind man. (a) What are the possible genotypes for the mother of the color-blind man? (b) What are the possible genotypes for the father of the color-blind man? (c) What are the chances that the first son will be color-blind? (d) What are the chances that the first daughter will be color-blind? What will be an ideal response?