Lichen Micromorphology
What will be an ideal response?
Haustoria
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How is active immunity different from passive immunity?
a. Active immunity is slower in onset and shorter-lived. b. Active immunity is slower in onset and longer-lived. c. Active immunity is faster in onset and shorter-lived. d. Active immunity is faster in onset and longer-lived. e. Only active immunity involves antibodies.
Which type(s) of RNA is/are translated into proteins?
A) mRNA B) rRNA C) tRNA D) mRNA and rRNA E) mRNA, rRNA, and tRNA
Which of the following abnormalities is most likely to be lethal to a cell?
a. X chromosome monosomy b. Y chromosome disomy c. X chromosome trisomy d. autosomal trisomy e. autosomal monosomy
Sperm are much smaller than eggs. Why?
A. Sperm contain only half the DNA of an egg. B. Sperm are small to avoid being recognized by the female's immune system. C. Sperm need only provide DNA; whereas eggs must provide cytoplasm, proteins, and mitochondria for the embryo. D. Smaller sperm were selected because they could swim faster and reach the egg first. E. Sperm seem smaller because they are long and thin, but they actually con