Which of these are the main structural components of biological membranes?
a. starches
b. triglycerides
c. proteins
d. phospholipids
e. steroids
D
Biology & Microbiology
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Oogenesis normally produces ____ gamete(s) from one germ cell.
A. one B. two C. three D. four
Biology & Microbiology
In humans, the majority of cells in the body are ______.
a) haploid gametes b) diploid somatic cells c) diploid gametes d) haploid somatic cells
Biology & Microbiology
The first day of the menstrual cycle is marked by ____
a. the beginning of ovulation b. the onset of PMS c. the beginning of menstruation d. an increase in the thickness of the uterine lining e. the beginning of the luteal phase
Biology & Microbiology
The first life-related and carbon-based
molecule was synthesized in vitro by a German chemist. What was that molecule?
a. starch b. fructose c. acetaldehyde d. urea e. rubisco
Biology & Microbiology