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WorksheetsKaylani = Bella
Total questions: 27
Worksheet time: 14mins
Louis Pasteur's experiment was set up to either accept or reject the hypothesis of
common ancestry.
organic molecules forming from simpler molecules.
electrical storms.
spontaneous generation.
Molecules hypothesized to NOT be abundant in pre-biotic earth conditions include:
H2
H2O
O2
NH3
The Miller Urey experiment used __________ to simulate electrical storms.
electrodes
a light bulb
heated water to create water vapour
radiation
At the end of a week of running the Miller-Urey experiment, _______________ were found in the experimental chamber.
amino acids
polypeptides
chains of amino acids
proteins
It is hypothesized that monomers were able to form into polymers
in laboratory conditions only.
at deep sea thermal vents.
through endosymbiosis.
due to the formation of the cell membrane.
The benefit of a cell membrane includes
formation of an internal environment in which optimal conditions can be maintained.
the rigid structure forms a protective layer.
allowing any materials to free flow in and out of the internal environment.
The theory that mitochondria and chloroplasts originated as symbioses between separate single-celled organisms is known as
endoeukaryotic theory.
exosymbiotic theory.
endosymbiotic theory.
exoeukaryotic theory.
The formation of membrane-bound organelles such as a the nucleus and rER is likely due to
infoldings in the external membrane that then pinched off.
a mutualistic relationship with a proteobacterium.
transcription by DNA into mRNA.
supercoiling of the nucleoid region.
Which is NOT a piece of evidence supporting the endosymbiotic theory?
Mitochondria and chloroplasts have their own DNA.
Mitochondria and chloroplasts have ribosomes similar in size to prokaryotic ribosomes.
The inner membranes of mitochondria and chloroplasts have proteins similar to prokaryotes.
Mitochondria and chloroplasts are roughly the same size as the nucleus.
Anabolism is ___________ of molecules through a __________ reaction.
synthesis, condensation
synthesis, hydrolysis
breaking down, condensation
breaking down, hydrolysis
Water is a product in a __________ reaction.
condensation
hydrolysis
Two monosaccharides, joined through a condensation reaction, form a
disaccharide.
dipeptide.
triglyceride.
amino acid.
The bond between two monosaccharides is called a _______ bond.
ester
glycosidic
peptide
hydrogen
The bond between two amino acids is called a _______ bond.
ester
glycosidic
peptide
hydrogen
The theory that organic molecules can only be synthesized by organisms is called
vitalism.
urea.
electronegativity.
artificial synthesis.
Arrows drawn on the periodic table indicating increasing electronegativity would point
up and to the right.
up and to the left.
down and to the right.
down and to the left.
Hydrolysis is the _______ of molecules by _______ of water.
breaking down, addition
breaking down, removal
bonding, addition
bonding, removal
What structure mediates and controls the formation of polypeptides?
ribosome
nucleus
mitochondria
golgi apparatus
Condensation between two amino acids results in a _________, joined by a _________ bond.
dipeptide, peptide
dipeptide, ester
disaccharide, peptide
disaccharide, ester
Water is _______ in a condensation reaction.
produced
consumed
Which is NOT a key idea that explains the huge range of possible polypeptides?
They could be any length.
There are 20 amino acid possibilities.
The amino acids could be in any order or combination.
Prokaryotes only use 10 amino acids.
The region on the surface of the enzyme that the substrate binds to is the
active site.
activation energy.
lock-and-key model.
catalysis.
An enzyme is a
carbohydrate.
protein.
lipid.
nucleic acid.
Glucose is a
monosaccharide.
disaccharide.
polysaccharide.
polypeptide.
Ribose is a
monosaccharide.
disaccharide.
polysaccharide.
polypeptide.
A saturated fatty acid can be thought of as "saturated with
carbon atoms."
hydrogen atoms."
nitrogen atoms."
oxygen atoms."
The NH2 group on an amino acid is known as the
R-group.
amine group.
carboxyl group.
central group.
