The most abundant cell type in blood is the
A) basophil. B) neutrophil. C) erythrocyte. D) platelet. E) leukocyte.
C
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Which one of the following is a common second messenger?
a. cGTP b. cMHC c. cATP d. cAMP e. cGDP
Which population is more likely to be affected
by genetic drift?
a. 12 squirrels in a forest b. 49 herons in a colony c. 215 fleas on a dog d. 1350 mice in a house e. 3000 zebra in a herd
A student has been tasked to observe microorganisms present in pond water under a microscope and draw them. Given that E. coli., amoeba, paramecium, algae, yeast, and Streptococcus are some of the microorganisms present in the pond water, describe the methods the student can employ to accomplish this assignment.
What will be an ideal response?
Which of the following statements about embryonic development is NOT true?
A. A zygote undergoes cleavage, which increases the cell number, but not the volume of the egg cytoplasm. B. A primitive gut is also referred to as an archenteron. C. A blastopore is the opening into the primitive gut formed by gastrulation. D. A blastocoel is the fluid-filled cavity of a blastula. E. The primitive streak occurs in the morula stage of the embryonic development.