The fossil record shows that angiosperms evolved directly from the Gnetophytes.

Answer the following statement true (T) or false (F)


False

Biology & Microbiology

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The rate of killing by an antimicrobial agent may slow when the microbial population has been greatly reduced because the remaining population may have a high proportion of resistant organisms.

Answer the following statement true (T) or false (F)

Biology & Microbiology

What percentage of foods in supermarkets contains detectable amounts of ingredients found in pesticides?

a. 10 percent b. 20 percent c. 30 percent d. 40 percent e. 50 percent

Biology & Microbiology

Sharks excrete a(n) small volume of dilute urine. Indicate whether the statement is true or false

Biology & Microbiology

As electrons travel from the primary electron acceptor in photosystem II down the electron transport chain to photosystem I, they drive the movement of protons from the stroma into the thylakoid compartment.  Why is the development of this chemical gradient useful to photosynthesis?

A. Protons are directly used in the thylakoid to make glucose B. The proton gradient can drive the production of ATP, which is needed for the light-independent reactions C. Protons provide the energy needed to drive the light-dependent reactions D. This proton gradient is used to make NADPH, which is needed for the Calvin cycle

Biology & Microbiology