Bio 181 Quizzes 100% Correct Verified 2024 Version 2024
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Course
BIO
Institution
BIO
Bio 181 Quizzes | 100% Correct | Verified
| 2024 Version
What is the difference between a microorganism and an organism? - Microorganisms are organisms
that cannot be seen with the naked eye.
What is an organism, according to your textbook? - Any living entity composed of one or more cells.
Wh...
Bio 181 Quizzes | 100% Correct | Verified
| 2024 Version
What is the difference between a microorganism and an organism? - ✔✔Microorganisms are organisms
that cannot be seen with the naked eye.
What is an organism, according to your textbook? - ✔✔Any living entity composed of one or more cells.
Which of the following statements about Percival Lowell's conclusions is correct? Mark all that apply. -
✔✔Lowell was wrong about there being a vast civilization of intelligent creatures on Mars.
Lowell was right that the white areas he observed at the poles contain water ice.'
Lowell appears to have been right about Mars having oceans, lakes and/or rivers on its surface that are
now gone.
We are certain that Lowell was wrong in some of his conclusions because - ✔✔we have sent multiple
missions to Mars, imaged its entire surface, and what he predicted was not there.
What is (are) the difference(s) between the cell depicted on the left and the one on the right? Mark all
that apply. - ✔✔The cell on the left lacks a nucleus; the one on the right has a cytoskeleton.
The cell on the left is a prokaryote; the one on the right is a eukaryote.
Which of the following statements about this picture is correct? Mark all that apply. - ✔✔This object
(Alan Hills 84001) was found on Earth but is thought to have originated on Mars.
The objects indicated by arrows look much like terrestrial (Earthly) microbes under the same type of
microscope.
The objects indicated by arrows could be formed by chemical and geological processes that have nothing
to do with life.
Which of the following statements is correct regarding the objects indicated by the arrows in the picture
in the previous question, by the definitions of terms used by most scientists? - ✔✔NASA scientists
hypothesize that the objects are fossil microbes from Mars.
,What do theories and hypotheses have in common, as scientists use these terms? - ✔✔They are both
explanations.
What distinguishes a scientific theory from a scientific hypothesis? Mark all that apply. - ✔✔Theories are
very broad, incorporating hypotheses, natural laws, principles and observations. Hypotheses are more
narrow, usually encorporating only a few observations.'
The goal of science is to produce coherent, confirmed theories. Hypotheses are simply a tool used to
approach that goal.
A key idea in science, as expressed by Richard Feymann in the quote given in class for example, is which
of the following? - ✔✔All ideas must be tested using evidence from the real world.
Which of the following is the description of life used by NASA in its publication, The Limits of Organic Life
in Planetary System? - ✔✔"Life is a self-sustaining chemical system capable of Darwinian evolution."
Which of the following are characteristics of life used by NASA scientists looking for life on other planets,
as expressed in The Limits of Organic Life in Planetary Systems? Mark all that apply. - ✔✔Life is chemical:
Living things use covalent bonding properties of C, H, N, O, P, and S and the ability of O and N to
modulate hydrocarbon reactivity.
Bio molecules have evolved to function when dissolved in water.
Life on Earth is fundamentally cellular.
Match the property on the left with the correct entity(-ies) from the drop-down menu. Some answers
may be used more than once. Some answers may not be used at all. - ✔✔Subatomic particles
All of these
Nuclear particles
Protons and neutrons only
Charge of +1
Protons
Smallest mass
Electrons
,Charge of 0
Neutrons
Charge of -1
Electrons
Approximately equal masses
Protons and neutrons only
Chris weighs 145 lbs. How much of his weight is carbon, and how much is oxygen? - ✔✔87 lbs of oxygen
and about 26 lbs of carbon.
Which of the following is NOT an element or ion commonly found in living things? Mark all that apply. -
✔✔Si Fe F
Which of the following statements is correct? - ✔✔Most elements out of which living beings are made
are nonmetals; therefore, living metabolism is based on covalent bonds.
What is the difference between an elementary substance and a molecule? - ✔✔Elementary substances
are always composed of the same type of atom; molecules may or may not be.
Which of the following statements about covalent bonds is (are) correct? Mark all that apply. - ✔✔They
form when electon densities combine to surround 2 atomic nuclei.
What evidence suggests that the surface of Mars once had liquid water, forming oceans, lakes and/or
rivers? Mark all that apply. - ✔✔Mars has mineral deposits on its surface that, on Earth, are left over
when a large body of water completely evaporates or are left over from hydrothermal springs.
One mission found evidence of boulders that were rounded by water, suggesting they were once in a
flowing river.
One mission (Opportunity, part of the MER mission) found evidence of ancient mud deposits that have
now dried up.
, Which of the following statements is correct? - ✔✔Radar on two different orbiters found evidence of
water under the north and south poles of Mars.
Match the description with the term that best expresses it from the drop down menu. All answers are
used, but only once. - ✔✔Polypeptide
Polymer of amino acids
Protein
Polymer of amino acids long enough to have a tertiary structure
Ligand
Molecule that binds to another, usually larger, molecule
Nucleotide
Composed of a ribose or deoxyribose sugar, a phosphate group and a nitrogenous base
Nucleic acids
Polymer of nucleotides
Amino acid
Contains a carboxyl group and an amine group
Enzyme
Protein catalyst
Evidence from atmosphere trapped in rocks, computer simulations, and radiometric dating suggest
which of the following? Mark all that apply. - ✔✔The moon was much closer to the Earth 4.4 billion
years ago than it is today.
Earth 4.4 billion years ago had very little molecular oxygen in its atmosphere.
Most of the surface of the Earth was hot and molten (melted rock) 4.6 billion years ago.
To survive on Earth 4.4 billion years ago you would need a space suit.
Which of the following statements about amino acids is correct? Mark all that apply - ✔✔A peptide bond
connects one amino acid's amine group to another amino acid's carboxyl group.
Amino acids are connected together via condensation reactions
All amino acids have a carboxyl group, which makes the molecule an organic acid.
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