Eukaryotic cell membranes use many sterol molecules for construction, which contrasts with archaeal membranes that utilize ________.

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


isoprenoids

Biology & Microbiology

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Viral growth in bird embryos can cause discrete, opaque spots in the embryonic membranes called ________.

A. patches B. cytopathic effects C. buds D. pocks E. plaques

Biology & Microbiology

At what partial pressure of oxygen do half the

heme groups in human blood have oxygen bound? a. 30 mm Hg b. 100 mm Hg c. 70 mm Hg d. 104 mm Hg e. all of these

Biology & Microbiology

When can photorespiration occur in plants?

A) when stomata are closed B) when oxygen levels inside the leaf are low C) when the plant is undergoing transpiration D) during the Calvin cycle

Biology & Microbiology

In humans, dental cavities form when Streptococcus mutans bacteria in the mouth hydrolyze sucrose. Which of the following is (are) the products of this reaction?

A) Glucose and galactose B) Glucose and fructose C) Starch D) Glycogen

Biology & Microbiology