Bio 101 NVCC Final Exam - Biology in Focus
How would acidification of seawater affect marine organisms?
.......Answer.........Acidification would increase dissolved carbonate
concentrations and promote faster growth of corals and shell-
building animals
The reactivity of an atom arises from .......Answer.........the
existence of unpaired electrons in the valence shell
The evolution of eukaryotic cells most likely involved
.......Answer.........endosymbiosis of an oxygen-using bacterium in
a larger host cell- the endosymbiont evolved into mitochondria.
Which of the following correctly describes the pathway taken by
a protein destined for secretion from an animal cell?
.......Answer.........rough ER
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transport vesicle
Golgi
transport vesicle
plasma membrane
All of the individuals of the same species living within a specified
area is known as a .......Answer.........population
Living things are divided into three different domains. Which of
these domains are classified as prokaryotes?
.......Answer.........Bacteria and Archaea
Charles Darwin proposed that "descent with modification"
resulted when organisms of a popular species become adapted
to their environment because they possess
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.......Answer.........heritable traits that enhance their survival and
reproductive success in the local environment
From the atomic mass, one can deduce the number of ________
in each atom of an element. .......Answer.........Protons plus
neutrons
The chemical behavior of an atom depends primarily upon which
of the following? .......Answer.........the number of protons in the
nucleus
An atom has 6 electrons in its outer shell. How many unpaired
electrons does it have? .......Answer.........2
Two atoms that have the same mass number must have the same
.......Answer.........number of protons + neutrons
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Which two functional groups are always found in amino acids?
.......Answer.........carboxyl and amino
which of the following is a correct monomer/polymer pairing?
.......Answer.........monosaccharide/polypeptide
Polysaccharides, triacylglycerols, and proteins are similar in that
they .......Answer.........are synthesized from subunits by
dehydration reaction
Which of the following polymers lack nitrogen?
.......Answer.........Glycogen
A molecule with the chemical formula C6H12o6 is probably a
.......Answer.........monosaccharide
Which of the following is the smallest carbohydrate?
.......Answer.........starch