Most of an organism's DNA is carried by its _________.
A. endoplasmic reticulum
B. nucleoli
C. chromosomes
D. mitochondria
C. chromosomes
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In plants, reduction of NADP+ occurs during _____
A) photosynthesis B) respiration C) photosynthesis and respiration D) neither photosynthesis nor respiration
Which statement about a complete digestive system is FALSE?
a. It is characteristic of flatworms. b. It is a tube with two openings. c. Its regions are specialized to perform specific functions. d. Food can be ingested while previously eaten food is being digested. e. Food enters the mouth and is eliminated through the anus.
An uncharged atom of nitrogen (atomic number = 7) has __________.
a. seven protons and seven neutrons b. seven neutrons c. seven valence electrons d. seven protons and seven electrons e. seven neutrons and seven electrons
Which of the following options best depicts the flow of information when a gene directs the synthesis of a cellular component?
A) RNA ? DNA ? RNA ? protein B) DNA ? RNA ? protein C) protein ? RNA ? DNA D) DNA ? tRNA ? mRNA ? protein