If a eukaryotic cell has 20 chromosomes and it undergoes meiosis, how many cells will result, and how many chromosomes will they contain?
A) 4 cells, each with 10 chromosomes B) 2 cells, each with 20 chromosomes
C) 2 cells, each with 10 chromosomes D) 4 cells, each with 20 chromosomes
Answer: A
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Enzymes function to:
A. react with other enzymes to form a product. B. catalyze chemical reactions. C. transport molecules and ions across membranes. D. regulate messages between cells.
Classical conditioning such as the salivating of Pavlov's dog in response to a metronome is based on a(n)
A. operant condition. B. sign stimulus. C. involuntary response. D. dishabituation. E. None of the choices are correct.
Trickling filters may be used in place of activated sludge in secondary sewage treatment
Indicate whether this statement is TRUE or FALSE.
Which of the following colonize the vagina during childbearing years?
A. Streptococci B. Clostridium C. Lactobacilli D. Enterobacter E. Clostridium AND lactobacilli