Which of the following cell types conducts water most rapidly through a plant?

A. sieve tubes
B. phloem
C. vessel members
D. parenchyma cells
E. sclerenchyma cells


Answer: C

Biology & Microbiology

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These white blood cells are in interstitial fluid,

phagocytize almost everything except uninjured body cells, and secrete cytokine which alerts the adaptive immune system to threats. These white blood cells are

a. neutrophils. b. macrophages. c. T lymphocytes. d. dendritic cells. e. eosinophils

Biology & Microbiology

Which of the following samples of microbial communities would be best suited for study by microelectrode experiments?

A. Striated microbial mats B. Ten gallons of seawater C. During infection in a human patient D. Sample sorted by optical tweezers

Biology & Microbiology

Which of the following organisms would reproduce by binary fission?

A) bacteria B) plants C) animals D) fungi

Biology & Microbiology

Consider the following information for a dihybrid cross. The dominant allele F codes for freckles, whereas the recessive allele f codes for no freckles. The dominant allele E codes for long eyelashes, whereas the recessive allele e codes for short eyelashes. Both parents have the genotypes of ee and Ff.

Indicate the following: (1 ) the phenotype of both parents, (2 ) the possible gametes that each parent can make, (3 ) all of the possible phenotypes for the offspring, and (4 ) the phenotypic ratio obtained after the Punnett square is drawn.

Biology & Microbiology