How many ventricles does the human brain have?
A. 5
B. 4
C. 2
D. 10
Ans: B. 4
Biology & Microbiology
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Land plants evolved from which of the following groups?
A. green algae B. brown algae C. red algae D. complex fungi E. None of the answer options is correct.
Biology & Microbiology
An interaction that benefits both participants is called a ____
Fill in the blank with the appropriate word.
Biology & Microbiology
Which of the following is an appropriate scientific hypothesis?
A) Bad people catch more colds than good people. B) Cold viruses should be allowed to reproduce just like anything else. C) It is unethical to go to school when you have a cold. D) People catch colds because of exposure to cold temperature.
Biology & Microbiology
In humans, the spine is made up of ________ vertebrae, and there are ________ pairs of ribs.
A. 25; 12 B. 20; 15 C. 26; 12 D. 16; 16 E. 27; 14
Biology & Microbiology