Which of the following statements about nucleotides is (are) true?
A) A nucleotide contains a nitrogenous base.
B) A nucleotide contains a pentose.
C) A nucleotide contains a phosphate group.
D) All of the above statements are true.
D) All of the above statements are true.
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What is a required input for the light-independent reactions?
a. NADPH b. phosphoglyceric acid (PGA) c. phosphoglyceraldehyde (PGAL) d. glucose e. ribulose bisphosphate
Scientists are now using an expanded definition of intelligence, beyond IQ, called
____________________. Fill in the blank(s) with the appropriate word(s).
Which of the following statements about sexually transmitted diseases (STDs) is false?
A. Gonorrhea, syphilis, and chlamydia are all transmitted through sexual contact. B. Because chlamydia has both bacterial and viral characteristics, it cannot be treated with antibiotics. C. Chlamydia is known as the "silent STD." D. The incidence of chlamydia has increased as gonorrhea has decreased. E. Syphilis can be transmitted from a mother to her fetus.
We now know that chloroplasts are derived from which group of free-living organisms?
a. mitochondria b. algae c. cyanobacteria d. archaea