Vertical transmission involves

A. droplet transmission.
B. fomites.
C. pasteurization.
D. pregnant woman to fetus.


D

Biology & Microbiology

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a. are circular muscles. b. prevent backflow. c. are smooth muscles. d. are found at the entrance and exit of the stomach. e. include all of these

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Males never give an X chromosome to any of their sons

a. True b. False

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Which of the following statements regarding food webs is true?

A) A consumer may eat only one type of producer. B) Detritivores consume dead organic matter from a specific trophic level. C) Several species of primary consumers may feed on the same species of producer. D) Nutrient transfer moves from producer to consumer and back. E) A hawk at the top of the food web is only a quaternary producer.

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Which of the following is a component of phloem?

A. Tracheids B. Sclerenchyma cells C. Epidermal cells D. Cork cambium E. Collenchyma cells

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