Which does not describe a function of proteins?

a.They encode genetic information.

Carbon is uniquely suited to form biological macromolecules because it….

can form four covalent bonds to build diverse molecules

Which do the cells of an E. coli bacterium and an elephant have in common?

a.Ribosomes to assemble proteins

Which statement correctly pairs the organelle with its function?

membrane controls what enters and exits the cell

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The Basics of Biology

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Answers

1
Which does not describe a function of proteins?
a.They help carry out chemical reactions.
a.They make up structures that support thecell.
a.They encode genetic information.
a.They allow muscle cells to contract.
2
Which of the following types of compounds is unlike the other three?
wax
phospholipid
polysaccharide
saturated fat
3
Which of the following does not affect the rate of enzyme activity?
the temperature
the amount of available substrate
the pH level
the amount of DNA
4
Which pair of terms is NOT correctly matched?
a.Amino acid: polypeptide
a.Polypeptide: protein
a.Nitrogenous base: DNA
a.Deoxyribose: RNA
5
Carbon is uniquely suited to form biological macromolecules because it….
can form four covalent bonds to build diverse molecules
It is non polar
It breaks down lipids
is a very small atom
6
Which do the cells of an E. coli bacterium and an elephant have in common?
a.Mitochondria to produce energy
a.Chloroplasts found around the vacuole
a.Ribosomes to assemble proteins
a.Chromosomes located in the cytoplasm
7
Which is NOT a structural feature of an enzyme?
substrate
amino acid
protein
active site
8
Which is NOT found in both RNA and DNA?
nitrogenous base
guanine nucleotide
phosphate group
ribose sugar
9
Water is a polar molecule. Which property of water is possible because of its' polar nature?
a.High specific heat
a.Low freezing point and high boiling point
a.All of the above
a.Cohesion and adhesion
10
Which statement correctly pairs the organelle with its function?
The chloroplast synthesizes proteins from amino acids
The vacuole stores the genetic information
membrane controls what enters and exits the cell
The nucleus absorbs the sun’s energy for photosynthesis

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