Which of the following statements regarding protein structure is FALSE?
A) The primary structure is formed by covalent bonding between amino acid subunits.
B) Secondary structures are formed only from hydrogen bonds.
C) Tertiary structures are formed only from covalent bonds.
D) Quaternary structures involved multiple polypeptides.
C
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Obligate anaerobes can often use ________ electropositive redox couples than facultative anaerobes, and ________ metabolism is most common in this group as well
A) lower / assimilative B) lower / dissimilative C) higher / assimilative D) higher / dissimilative
The ability of dermatophytes to grow on the skin surface and cause superficial mycoses is related to their ability to metabolize keratin.
Answer the following statement true (T) or false (F)
A state of extreme sluggishness is known as ____
a. torpor b. endothermic c. migration d. extinction e. reproduction
Which subatomic particles of a pigment absorb light?
a. electrons only b. protons only c. neutrons only d. electrons and protons e. protons and neutrons