When we look at infectious disease statistics for the global human population as a whole, we find the number one cause of death is

A) malaria.
B) parasitic diseases such as worms.
C) respiratory infections.
D) heart disease.


Ans: C) respiratory infections.

Biology & Microbiology

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What fraction of all of the organic carbon on Earth results from microbial fixation of carbon dioxide in the oceans?

A. About 1/2 B. About 3/4 C. About 1/4 D. About 1/8

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Which of the following animals do NOT use echolocation?

a. Bats b. Porpoises c. Dolphins d. Moths e. Whales

Biology & Microbiology

A cell is dividing by binary fission. What can you conclude?

a. Mitosis has taken place without cytokinesis. b. Homologous chromosomes have already paired. c. The cyclin-Cdk complex is no longer phosphorylating enzymes. d. The cell cycle is out of control. e. The cell is prokaryotic.

Biology & Microbiology

The structure where parts of ribosomes form before passing into the cytoplasm is the ____

a. nucleus b. nuclear membrane c. Golgi body d. nucleolus e. chromosome

Biology & Microbiology