The function of leghemoglobin in root nodules is to

A) bind oxygen.
B) chelate iron.
C) produce iron.
D) produce nitrogen.


Answer: A

Biology & Microbiology

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Solution A has a pH of 6 and solution B has a pH of 8. Therefore, ____

a. A has 10 times greater H+ concentration than B. b. B has 10 times greater H+ concentration than A. c. A has 100 times greater H+ concentration than B. d. B has 100 times greater H+ concentration than A. e. A has 1,000 times greater H+ concentration than B.

Biology & Microbiology

The hormone ________ removes calcium from the blood and causes it to be stored in the bone

Fill in the blank(s) with correct word

Biology & Microbiology

Imagine that you have been hired as a chemist and your first task is to examine a newly discovered atom. The paperwork you are given states that its atomic number is 110. What does this mean?

A) The atom contains 55 electrons. B) The atom contains 110 protons. C) The atom contains 55 protons and 55 neutrons. D) The atom is an isotope.

Biology & Microbiology

Prion diseases can be acquired via all of the following EXCEPT

a) ingestion. b) inhalation. c) contaminated surgical instruments. d) transplanted nerve tissue.

Biology & Microbiology