Gamma radiation
A. is used to sterilize some food products.
B. is a type of nonionizing radiation.
C. has a longer wavelength than UV radiation.
D. has poor penetrating power.
Answer: A
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Photosynthesis takes place in
a. flowers only. b. leaves only. c. roots only. d. any green part of the plant
The "pill" works primarily by ____
a. blocking sperm from entering the uterus b. causing spontaneous abortions c. inhibiting the release of FSH and LH d. preventing implantation of the embryo e. stimulating the release of GnRH
Smooth endoplasmic reticulum
A) stores calcium ions in muscle cells. B) is the major site of carbohydrate synthesis in eukaryotic cells. C) produces proteins for cell membranes. D) helps assemble ribosomes for protein synthesis.
The most common autosomal trisomy is
a. Turners syndrome. b. XXY (Klinefelter syndrome). c. Fragile X syndrome. d. trisomy 21 (Down syndrome).