Biochemistry 1 Review: Question Preview (ID: 20348)


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Which of the following make up a triglyceride?
a) amino acids and glycerol b) phosphoric acids and glycerol c) nucleic acids and glycerol d) fatty acids and glycerol
Which of the following best describes how lipids affect the functioning of living organisms?
a) Lipids are converted into nucleic acids for DNA synthesis. b) Lipids provide an energy source for periods of low glucose availability. c) Lipids help to break apart proteins so that energy may be released. d) Lipids make up the backbone that holds DNA and RNA nucleotides together.
All organic compounds contain
a) nitrogen. b) phosphorus. c) carbon. d) sulfur.
Water stores heat much longer than other substances do, allowing organisms to
a) heat themselves through evaporation. b) maintain a stable internal temperature. c) dissolve nonpolar compounds. d) maintain surface tension.
Which of the following is a role of water in cells?
a) storing energy b) regulating enzymes c) providing immunity d) stabilizing temperatures
Attraction between different substances is called
a) adhesion b) cohesion c) polarity d) gravity
Which of the following is a role of water in cells?
a) filtering blood b) producing nutrients  c) transporting minerals d) removing bacteria
Attraction between substances of the same kind is called
a) adhesion b) cohesion c) polarity d) gravity
The bonds between the atoms that make up water molecules are called
a) covalent bonds. b) hydrogen bonds. c) ionic and covalent bonds. d) covalent and hydrogen bonds.
The smallest unit of matter that cannot be broken down by chemical means is a(n)
a) element. b) atom. c) molecule. d) electron.
Twin puppies are fed different types of dog. Spot was fed canned dog food while Rover was fed dried dog food. After a few weeks, Spot had put on significantly more weight than Rover. In this experiment, what is the dependent variable?
a) Type of Dog Food b) Weight of Dogs c) Amount of Dog Food d) None of the Above
A student noticed that in dirty pond water some frogs had developed an extra leg. This was a(n)
a) hypothesis. b) theory. c) observation. d) control.
In the Homeostasis Experiment students observed how their heart rate changed over time and compared their rate of change with a partner's. The independent variable in this experiment was
a) heart rate b) time c) exercise d) partner
In the Homeostasis Experiment students observed how their heart rate changed over time and compared their rate of change with a partner's. The dependent variable in this experiment was
a) heart rate b) time c) exercise d) partner
Homeostasis means
a) a change over long periods of time. b) rapid change. c) keeping things the same. d) the same thing as evolution.
Biology is the study of
a) minerals. b) life. c) the weather. d) energy.
Living things
a) need energy for life processes. b) have the ability to reproduce. c) are composed of cells. d) All of the above
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