Mycoplasma and Ureaplasma differ from other bacteria because they naturally lack a ________.

Fill in the blank(s) with the appropriate word(s).


cell wall

Biology & Microbiology

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Based on hierarchical classifications and features, which statement about humans is true?

a. Humans are deuterostomes. b. Humans are acoelomates. c. Humans are diploblasts. d. Humans are asymmetrical.

Biology & Microbiology

Which of the following junctions influences the

passage of ions and small molecules between cells? a. gap b. adhering c. loose d. tight e. gated

Biology & Microbiology

What is the most likely cause of a sampling error?

a. a malfunctioning calculator b. a poorly designed hypothesis c. very few individuals in the control group d. having both an experimental and a control group e. the researcher’s knowledge of which individuals were in the experimental group

Biology & Microbiology

On which of the following is natural selection based?

a. genotype b. populations c. phenotype d. alleles e. genes

Biology & Microbiology