Select the answer that best completes the following statement: Chemical reactions in living systems occur in an ____________ environment, within a narrow range of temperatures
(a) optimal
(b) organic
(c) extracellular
(d) aqueous
(d)
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Arbuscular mycorrhizae are characterized by all of the following features except
A. They are the most common mycorrhizal type. B. Fungal hyphae penetrate plant root cells. C. They are seen in the earliest vascular plant fossils. D. The fungus can associate with several species of plants. E. The fungal component is a glomeromycete.
The population is entering exponential growth at letter ____
a. A b. B c. C d. D
e. ESomeone who has broken an arm and has had a cast on it for months will notice a distinct shrinking of the arm once the cast is removed. Why does this happen?
A) The cast has reduced blood flow to the muscle tissue to reduce swelling. B) Muscles that are not used will atrophy. C) The other arm was used more to compensate for the unused one, and it has become stronger. D) If the person was right-handed, he or she will become left-handed.
Describe the composition of a nucleosome.
What will be an ideal response?