BSC 108 Exam 1-ALABAMA
A collection of hypotheses that have been repeatedly tested without rejection is called a - Answer-theory
A new species has been discovered. Individuals of this species are multicellular eukaryotes that obtain nutrients from decomposing organic matter. In which domain s...
BSC 108 Exam 1-ALABAMA
A collection of hypotheses that have been repeatedly tested without rejection is called a -
Answer-theory
A new species has been discovered. Individuals of this species are multicellular eukaryotes that
obtain nutrients from decomposing organic matter. In which domain should this species be
classified? - Answer-domain Eukarya
A tentative explanation of an observation is - Answer-hypothesis
An element is found to contain 33 electrons, 33 protons, and 22 neutrons. Which of the following
is true? - Answer-Its atomic number is 33 and its atomic mass is 55.
An enzyme catalyzes a reaction by - Answer-lowering the energy of activation of a reaction
Animal cells have chloroplasts but plant cells do not. - Answer-false
Both plant and animal cells have plasma membranes. - Answer-true
Communities are more complex than populations. - Answer-true
Describe an example of diffusion. - Answer-Diffusion is the movement of molecules from where
they are highly concentrated to where they are less concentrated, such as the diffusion of
smoke molecules throughout a room.
Describe one theory that unifies biology as a science. - Answer-The theory of evolution by
natural selection unifies biology as a science because it accounts for the unity and diversity of
life on Earth. This theory states that there is an overproduction of offspring and competition for
resources, and variation exists among individual offspring. Unequal reproductive success
(natural selection) among these offspring is the mechanism of evolution.
Domain Eukarya contains animals, plants, protists, and fungi. - Answer-True
How does hydrolysis affect macromolecules? - Answer-Hydrolysis is the addition of a water
molecule to one of the covalent bonds of a polymermacromolecule, breaking the bond and
releasing monomer subunits.
If an animal cell is placed in a hypotonic solution, it will swell and burst. - Answer-true
In order for an enzyme to work properly - Answer-all are true
(a. it must have a particular shape.
b. the temperature must be within certain limits.
c. the pH must be within certain limits.)
Oxygen forms two ______________ bonds with hydrogen atoms to form a water molecule. -
Answer-polar covalent
Proteins are made at the - Answer-ribosomes
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