Which term describes chromosomes whose centromeres are located closer to one end of the chromosome?

A) metacentric
B) acrocentric
C) holocentric
D) anacentric


B) acrocentric

Biology & Microbiology

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Unique features of the planctomycetes include ________.

A. a membrane-bound nuclear region B. resistance to ionizing radiation C. their size: some are as large as protozoa D. twitching fimbriae that are required for motility

Biology & Microbiology

C3a and C5a are involved in

A. inflammation. B. interferon production. C. properdin activation. D. attraction of phagocytes. E. inflammation AND attraction of phagocytes.

Biology & Microbiology

Which of these statements is true?

a. 75 percent of the causes of infertility remain unidentified. b. Long-term stress can cause early puberty and more frequent menstruation. c. Proper nutrition is an important factor in supporting fertility. d. In vitro fertilization involves injecting sperm into the uterus.

Biology & Microbiology

In the plant life cycle, what process takes place

between the formation of gametes and the formation of the zygote?

a. mitosis b. meiosis c. fertilization d. more than one of these e. none of these

Biology & Microbiology