If a virus attacks a cell, which type of immunity would be activated?
What will be an ideal response?
cell-mediated immunity (cellular immunity)
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Bioluminescence is:
A. the production and emission of light by organisms B. the capture of moonlight for nocturnal photosynthesis C. the absorption of light by pigments for transfer to chlorophyll a D. the ability to detect and move away from sources of light E. the ability to detect and move toward sources of light
A water-vascular system is characteristic of the
phylum a. Arthropoda. b. Annelida. c. Chordata. d. Mollusca. e. Echinodermata.
Gene conversion can be observed in fungi by identifying aberrant ratios in the ascus. Which of the following represent possible aberrant ratios caused when there is no mismatch repair of base-pair mistakes in the heteroduplex region?
A) 4:4 B) 3:1:1:3 C) 5:3 D) 6:2 E) 3:3:2
When offspring are born from fertilized eggs that remain inside the female until they hatch, this is termed which of the following?
a. external fertilization b. oviparity c. ovoviparity d. viviparity