What is a desirable (and healthy) result of exposure to ultraviolet rays from the sun?
A. A decrease in melanocyte activity
B. Increased production of vitamin D
C. Increased production of vitamin C
D. Sunburn
E. A deep bronze tan
B. Increased production of vitamin D
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The nucleus is located in the ____________________ of the sperm
Fill in the blank(s) with correct word
Before the mRNA transcribed from a gene can be used to translate into a protein, it must be
A) edited to remove introns. B) edited to remove exons. C) transported into the cytoplasm. D) edited to remove introns and transported into the cytoplasm. E) edited to remove exons and transported into the cytoplasm.
The term "stratum germinativum" is sometimes used to refer to the
A. stratum granulosum. B. stratum basale. C. stratum lucidum. D. stratum spinosum. E. stratum corneum.
The part of the cochlea that converts pressure waves (from sounds) into changes in membrane potentials is the
A. scala tympani. B. modiolus. C. helicotrema. D. spiral organ. E. scala vestibuli.