Chloroplasts
a. have membrane bound nuclei containing DNA.
b. evolved from cyanobacteria.
c. have been found as symbionts inside mitochondria.
d. evolved from photosynthetic eukaryotes.
e. are the site of aerobic respiration.
b
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If two solutions have unequal concentrations of a solute, the solution with the lower concentration is called
A. isotonic. B. hypertonic. C. hypotonic. D. osmosis.
What is a difference between the structure of DNA and proteins?
A) DNA is composed of amino acids and proteins are composed of nucleotides. B) DNA is composed of the four nucleotides A, G, C, and T and proteins are composed of the four nucleotides A, G, C, and U. C) DNA is composed of nucleotides and proteins are composed of amino acids. D) DNA is composed of 10 different amino acids and proteins are composed of 20 different amino acids.
Yeast are ____
a. single-celled fungi b. multicellular plants c. single-celled plants d. single-celled protists e. multicellular fungi
I'm a botanist looking for new species of C4 plants. Where should I focus my search?
a. Maine b. Quebec, Canada c. equatorial rainforest d. The Everglades (in Florida) e. Arizona