Which is an active transport process?
A. Facilitated diffusion
B. Osmosis
C. Ion pump
D. Bulk filtration
E. Simple diffusion
Answer: C
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A(n) ________ binds to neighboring, uninfected cells and stimulates them to produce chemicals that may protect these cells from viruses.
A. complement B. interferon C. interleukin D. lysis
The ____ gland stimulates the release of calcium and phosphate ions into the blood when calcium levels become too low
a. thyroid b. pineal c. parathyroid d. pituitary
When a red flower crossed with a white flower produces a pink flower, which of the following is demonstrated?
a) pleiotropy b) polygenic inheritance c) incomplete dominance d) codominance
The hypoblast layer of the blastodisc is made of
A. cuboidal cells and forms during the pre-embryonic period. B. cuboidal cells and forms during the fetal period. C. columnar cells and forms during the morula stage. D. columnar cells and forms during gastrulation.