When a protein is composed of more than one polypeptide chain, the arrangement of the chains is called the ________ structure.
A. primary
B. secondary
C. tertiary
D. quaternary
Answer: D
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What is the difference between a ribonucleotide and a deoxyribonucleotide?
A) Ribonucleotides contain a phosphate group. B) Ribonucleotides have a hydroxyl group on the 2 carbon of their sugar subunit. C) Ribonucleotides contain a sugar with five carbon atoms. D) Ribonucleotides have a hydrogen atom on the 1 carbon of their sugar subunit.
Growth of yeasts and molds will be favored in more acidic foods.
Answer the following statement true (T) or false (F)
The first self-replicating molecule was probably ________
Fill in the blank(s) with correct word
In the Gulf of Mexico, red tides caused by the dinoflagellate Karenia brevis cause massive fish kills as well as respiratory problems in humans. As an environmental scientist, what would you suggest concerned citizens do to help prevent these red tides?
A. Encourage sustainable fishing B. Participate in beach cleanup efforts C. Purchase fuel-efficient vehicles D. Reduce fertilizer use on lawns and gardens E. Decrease the amount of artificial light in coastal areas