What does it mean for an apicomplexan to have a complex life cycle?

a. require two or more hosts
b. have many specialized structures
c. never age
d. begin with a larval stage


Ans: a. require two or more hosts

Biology & Microbiology

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A high school student in Nepal is accepted—and eventually attends—college in the United States. His diet goes from one that is rich in vegetables and grains to one that primarily consists of meat and sugars

What will happen to the bacterial composition of his intestines? A. There will be more Firmicutes inhabiting his intestinal tract. B. There will be more Bacteroidetes inhabiting his intestinal tract. C. Nothing will happen; there is no relationship between bacteria in the intestines and diet. D. Bacteria will no longer inhabit his intestines.

Biology & Microbiology

Some biologists argue that transposable elements provide benefits to a given species. Which of the following does not describe a potential benefit offered by transposable elements?

A. Increases genetic variation. B. Inserts into functionally important genes. C. Codes for a gene that confers antibiotic resistance. D. Codes for a gene that increases survival.

Biology & Microbiology

Which of the following does NOT occur in the

first three months of development?

a. formation of a heart b. disappearance of the tail c. formation of internal organs d. detection of movement of the fetus e. segmentation and development of somites

Biology & Microbiology

Which level of protein structure is characterized by alpha and beta sheets in which hydrogen bonding holds the shape in place?

A. pentagonal structure B. tertiary structure C. quaternary structure D. secondary structure E. primary structure

Biology & Microbiology