Which level of biological organization is composed of tissues?

(a). organism
(b). organ system
(c). organ
(d). cell
(e). molecules


Answer: (c). organ

Biology & Microbiology

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What is the role of DNA ligase in the elongation of the lagging strand during DNA replication?

A) It synthesizes RNA nucleotides to make a primer. B) It catalyzes the lengthening of telomeres. C) It joins Okazaki fragments together. D) It unwinds the parental double helix. E) It stabilizes the unwound parental DNA.

Biology & Microbiology

The genomes of mammalian mitochondria contain

A. a total of 37 genes. B. genes for proteins used in oxidative phosphorylation. C. genes whose products are used in translation of mRNA. D. ribosomal genes. E. All of the items listed are correct.

Biology & Microbiology

The control of gene expression is most commonly found at which juncture?

What will be an ideal response?

Biology & Microbiology

Select the best response to the question. ? ?Which of the following demonstrates an understanding of gas sterilization?

A) The indicator tape turns a different color to verify the instruments are sterile. B) Sterilized instruments can be used within a few hours of processing. C) The instruments are rinsed with water and sterilized while still wet. D) Sterilized instruments are stored in a well-ventilated area for at least 24 hours.

Biology & Microbiology