An adaptation in one environment may be useless or harmful in different circumstances.

a. true
b. false


Ans: a. true

Biology & Microbiology

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Seasonal respiration rates fluctuate in a similar manner as seasonal photosynthesis rates

A. true B. false

Biology & Microbiology

The process by which the three embryonic tissue layers form is called ________

Fill in the blank(s) with correct word

Biology & Microbiology

Which of the following is treated with antibiotics?

A) botulism B) tetanus C) streptococcal pneumonia D) polio E) All of these diseases can be successfully treated with antibiotics.

Biology & Microbiology

Mucous membranes are quite thin and fragile. How can such delicate tissue provide defense against microbial invaders?

A. the mucus secreted by the mucous membrane physically traps microbes. B. the mucus contains a variety of antimicrobial chemicals and molecules. C. both the mucus and the outer layer of cells are shed frequently. D. the mucus is a physical trap that contains a variety of antimicrobial chemicals. E. the mucus physically traps microbes, contains a variety of antimicrobial chemicals, and is shed constantly, along with the outermost layer of cells.

Biology & Microbiology