Passive immunity can provide immunity ____
a. temporarily
b. permanently
c. for months
d. for many years
e. for an entire lifetime
ANSWER: a
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Adult stem cells are usually
A. differentiated. B. totipotent. C. pluripotent. D. multipotent.
Which of the following statements best compares the peduncle and receptacle?
A. The peduncle and receptacle are identical, merely two names for the same structure. B. The peduncle is haploid and the receptacle is diploid. C. The peduncle is a reproductive part of a flower and the receptacle is a vegetative part. D. The receptacle is the part of the flower that receives the pollen whereas the peduncle relays sperm to the ovule. E. The peduncle is the tip of the stem bearing the flower and the receptacle is the base of the flower.
An infection that persists over a long duration is referred to as a ______ infection.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements is not correct about lactic acid fermentation?
a. It is inefficient compared to aerobic respiration. b. It uses glucose as a substrate. c. It produces two ATP molecules for every glucose molecule. d. Oxygen is the final electron acceptor of this pathway. e. Glycolysis is the only energy-yielding step of this pathway