An exoenzyme is an extracellular enzyme that may be involved int he breakdown of host defensive barriers or damage to host tissues

a. true
b. false


a. true

Biology & Microbiology

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Explain why we say nearly all life on Earth ultimately depends on the sun for energy

What will be an ideal response?

Biology & Microbiology

The number of individuals produced per individual per unit time in a population is its rate.

A. expatriation B. emigration C. immigration D. death E. birth

Biology & Microbiology

Braking your car after you observe a child's ball rolling into the street from between parked vehicles

a. is instinctive. b. requires a conscious decision. c. is a reflex. d. both a and b.

Biology & Microbiology

Microscopic organisms floating on the surface of the ocean make up the ________.

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

Biology & Microbiology