Which of the following is closest to a micrometer in size?
A) the width of a strand of DNA
B) the length of a plant cell
C) the length of a chicken egg
D) a typical bacterial cell
E) the size of a ribosome
D) a typical bacterial cell
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Sexual reproduction
A. allows more offspring to be produced per individual. B. allows a parent to pass on 100% of their genes to offspring. C. increases genetic variation. D. results in the formation of a haploid zygote. E. only occurs in vertebrates.
A test procedure that applies a specific fluorescent dye-antibody complex to a slide to which the patient specimen has been applied is referred to as a(n):
a. solid-phase enzyme immunoassay. b. direct fluorescent antibody test. c. indirect fluorescent antibody test. d. radioimmunoassay.
The female gametophyte of a flower develops
within a(an)
a. stigma. b. anther. c. calyx. d. corolla. e. ovule.
The infective stage of the Cryptosporidium parvum is:
A. The Trophozoite B. The Cyst C. The Oocyst D. The Sporozoite E. The trypomastigote.