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Bio 1100 Exam 1 Graded A+ 2024
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Bio 1100 Exam 1 Graded A+ 2024
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Bio 1100 Exam 1 Graded A+ 2024"The force of attraction by which terrestrial bodies tend to fall toward the center of the
earth" is known as - ANSWER-the theory of gravity
A dinoflagellate consumes and produces his own food. What kingdom is Dino in? -
ANSWER-protista
A mesh tube or scaffolding inserted into and left inside the heart - ANSWER-stent
A mutation occurs in the genes of a bacterial cell, preventing it from forming pili. What
function will this cell be unable to perform? - ANSWER-attachment to a
surface/organism
A nucleotide is to a nucleic acid as: - ANSWER-an amino acid is to protein
A potential new organism has been discovered. Which of the following would be the
most conclusive in confirming it is a life form? - ANSWER-detection of cells
create ATP - ANSWER-mitochondria
E. coli is a common bacteria that lives inside intestines and often ends up on fresh
produce such as spinach. You remember from biology that it - ANSWER-is in the
domain prokarya, has no nucleus, no membrane bound organelles, but has an extra
loop of DNA
Endosymbiosis is the best explanation for - ANSWER-appearance of mitochondria and
chloroplasts in eukaryotes
Eukaryotic polymerization of amino acids into polypeptides requires energy in the form
of ATP, which is supplied by which cellular structure? - ANSWER-mitochondria
Eye wash stations are found in many biology labs in case any irritable substance comes
into contact with the eyes. What property of water allows for the irrigation and removal
of an irritable substance? - ANSWER-good solvent
Food enters your mouth and reaches your small intestine. What chemical process uses
water to break down polymers into smaller more bioavailable chemical subunits? -
ANSWER-hydrolysis
How many potential hydrogen bonds can one molecule of ethanol form? - ANSWER-2
If two drugs disrupt the cytoskeleton, which cell function will be most affected by
addition of these drugs to an amoeba? - ANSWER-the ability of the amoeba to crawl
and change shape
, In a double blind study a number of people were given Echinacea to study its effects on
the common cold. Another group of people were given a placebo. The placebo group is
known as: - ANSWER-the control group
In order for some cells to maintain concentrations of ions that differ from the
surrounding environment, cells will use energy to pump ions across the membrane
against their concentration gradients. This type of membrane transport is known as: -
ANSWER-active transport
Insects in the family Gerridae (water striders) have the ability to walk on water. Which
physiological adaptations do water striders likely have? - ANSWER-hydrophobic legs,
waxy chitonous legs
maintaining of a stable internal environment - ANSWER-homeostasis
Molecules of ________ are embedded within the membrane to give it fluidity, and
__________ are embedded within the membrane to aid in the transport of molecules. -
ANSWER-cholesterol; proteins
One area of organism classification depends upon whether cells are prokaryotic or
eukaryotic. The primary difference between these groups is: - ANSWER-the presence
of membrane bound organelles
Organisms on earth are composed of molecules and compounds that are constructed
primarily of what four elements? - ANSWER-carbon, hydrogen, oxygen, nitrogen
Production of cholesterol (a steroid molecule) is one important function of the liver.
Where in the liver this occurring? - ANSWER-smooth ER
Proteins such as _________ allow for muscle contraction in animals. - ANSWER-
myosin
The "rough" in rough ER refers to the affinity that this structure has for what cellular
structures? - ANSWER-ribosomes
The atomic number is equal to the number of ________ in the nucleus of the atom. -
ANSWER-protons
The carbon and hydrogen atoms in methane are held together by __________. The
sodium and chlorine atoms in sodium chloride are held together by ________ bonds. -
ANSWER-covalent, ionic
The genetic disease that results in over-accumulation of lipids and the subsequent
failing of lysosomes and their bursting open is known as: - ANSWER-Tay-Sachs
disease
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