Biology 1 - The Life Sciences » 2019 » Midterm Exam
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Question #1
Which of the following is not a characteristic of all living organisms?
A.
Multicellularity
B.
Energy Utilization
C.
Order
D.
Homeostasis
Question #2
Which of the following is properly characterized as a producer?
A.
A mushroom
B.
Both a mushroom and an oak tree
C.
An eagle
D.
An oak tree
Question #3
Which two levels are farthest apart on the hierarchy of biological organization ?
A.
Tissue and organ
B.
Organism and population
C.
Atom and Cell
D.
Ecosystem and biosphere
Question #4
Which type of chemical bond involves the sharing of electrons in the outer shells of atoms?
A.
Hydrogen bonds
B.
James Bonds
C.
Covalent bonds
D.
Ionic bonds
Question #5
An atom with a positive charge has
A.
more neutrons than protons
B.
more electrons than protons
C.
more protons than electrons
D.
equal numbers of protons, electrons, and neutrons
Question #6
Which of the following is an example of an element?
A.
Water
B.
Carbon
C.
Glucose
D.
Salt
Question #7
Which is true regarding saturated fats?
A.
They have a higher melting point
B.
They lack double bonded carbon atoms in their fatty acids
C.
All these answers are associated with saturated fats
D.
They are associated with animal fat
Question #8
Enzymes function by increasing the energy of activation of a chemical reaction so that the reaction can go faster.
A.
FALSE
B.
TRUE
Question #9
If a cell has a lower concentration of solutes inside it’s fluid than its surrounding environment, the cell is in _________
A.
a hypotonic environment
B.
an isotonic environment
C.
a hypertonic environment
D.
a platonic environment
Question #10
Cell cytoplasm is primarily composed of ___________.
A.
lipid
B.
water
C.
carbohydrate
D.
protein
Question #11
Which organelle is a principle site of cell product packaging and storage?
A.
Rough Endoplasmic Reticulum (ER)
B.
Mitochondrion
C.
Golgi apparatus
D.
Lysosome
Question #12
The role of messenger RNA is to _______________.
A.
to assemble amino acids into a polypeptide chain.
B.
to be a copy of a portion of the DNA molecule.
C.
to copy the appropriate DNA sequence for a particular protein.
D.
bring the appropriate amino acids to the ribosome.
Question #13
Where would I go to watch active protein synthesis?
A.
smooth endoplasmic reticulum
B.
lysosomes
C.
mitochondria
D.
rough endoplasmic reticulum
Question #14
Which is produced when your muscles enter into anaerobic respiration?
A.
ATP
B.
Lactic acid
C.
Both Lactic acid and ATP
D.
Sugar
Question #15
Which of the following does not occur during prophase?
A.
Formation of the nuclear membrane
B.
The condensation of the chromosomes
C.
The initial formation of the spindle fibers
D.
None of the above (all occur during prophase)
E.
None of the above (all occur during prophase)
Question #16
Which of the following events in cellular respiration produces the most ATP?
A.
Electron Transport Chain
B.
Calvin Cycle
C.
Gycolysis
D.
Krebs Cycle
Question #17
Which organelle is specifically associated with photosynthesis?
A.
Mitochondria
B.
Ribosomes
C.
Chloroplasts
D.
Centrosomes
Question #18
Which of the following is an example of an electron carrier (transport) molecule?
A.
ATP
B.
Acetyl-CoA
C.
NADH
D.
Glucose
Question #19
Which of the following is the smallest unit of life?
A.
The organic molecule (like DNA)
B.
The organelle
C.
The cell
D.
The organism
Question #20
_____________ are found in plant cells but not animal cells.
A.
Central water vacuoles
B.
Rough endoplasmic reticula
C.
Cell membranes
D.
Mitochondria
Question #21
Which of the following processes produces O2 as a product?
A.
condensation synthesis
B.
photosynthesis
C.
hydrolysis
D.
cell respiration
Question #22
Which phase of mitosis involves the lining up of the chromosomes?
A.
Prophase
B.
Telophase
C.
Anaphase
D.
Metaphase
Question #23
Beryllium's atomic mass is 9 and its atomic number is 4. How many neutrons are found in a Beryllium atom?
A.
5
B.
13
C.
9
D.
14
Question #24
Isotopes are elements that vary in their number of neutrons.
A.
TRUE
B.
FALSE
Question #25
Within a single cell, which of the following is physically the smallest ?
A.
Mitochondrion
B.
Phospholipid molecule
C.
Cell membrane
D.
Nuclear envelope
Question #26
The body uses ____________ to maintain a constant pH.
A.
Buffers
B.
Carbon dioxide
C.
Water
D.
Lipids
Question #27
Theatomic mass of an atom only refers to the total number of protons in the nucleus.
A.
FALSE
B.
TRUE
Question #28
Organic molecules are typically polymers.
A.
FALSE
B.
TRUE
Question #29
Electrons orbit the nucleus because _______________.
A.
of the negative-charged protons
B.
It's a trick question--electrons don't orbit the nucleus.
C.
of the positively-charged protons
D.
of the negatively-charged neutrons--like attracts like
Question #30
Entropy is
A.
disorder
B.
complexity
C.
order
D.
simplicity
Question #31
How many of the following organelles occur in your skin cells: mitochondria, ribosomes, nucleus, lysosomes, chloroplasts, vacuole, ER
A.
6
B.
3
C.
4
D.
1
E.
7
F.
5
Question #32
A ball at the top of a hill is an example of______ and a ball rolling down the hill is an example of ______.
A.
potential energy; kinetic energy
B.
exergonic reaction; endergonic reaction
C.
noncompetitive inhibition; competitive inhibition
D.
kinetic energy; potential energy
Question #33
Which of the following is the correct order of the three stages of aerobic respiration?
A.
krebs cycle, glycolysis, electron transport
B.
glycolysis, krebs cycle, electron transport chain
C.
electron transport chain, krebs cycle, glycolysis
D.
electron transport, glycolysis, krebs cycle
Question #34
In plants, Photosystem II is known as the "NADPH-producing Photosystem"
A.
TRUE
B.
FALSE
Question #35
Plant cells function best when in a hypotonic environment.
A.
TRUE
B.
FALSE
Question #36
Plants perform photosynthesis but not cellular respiration.
A.
TRUE
B.
FALSE
Question #37
Cellular respiration of one molecule of glucose ultimately yields 136 molecules of ATP
A.
FALSE
B.
TRUE
Question #38
Cell membranes are semipermeable, as water is not allowed to pass through them freely.
A.
FALSE
B.
TRUE
Question #39
CAM photosynthesis is a special process that evolved in those plants that live in cooler, more low light conditions.
A.
FALSE
B.
TRUE
Question #40
Which color of light is least used as an energy source to power photosynthesis?
A.
Yellow
B.
Red
C.
Blue
D.
Green
Question #41
Which organelle is responsible for the making of ribosomes?
A.
Rough endoplasmic reticulum
B.
Lysosome
C.
Golgi apparatus
D.
Nucleolus
Question #42
Which organelle is responsible for the synthesis of lipids?
A.
Rough endoplasmic reticulum
B.
Smooth endoplasmic reticulum
C.
Mitochondrion
D.
The nucleus
Question #43
All mutations are harmful
A.
FALSE
B.
TRUE
Question #44
How many codons are in the mRNA sequence GGAAUGAAACAGGAACCC?
A.
6
B.
3
C.
18
D.
0
Question #45
How many different types of bases are used to encode all the genetic in a molecule of DNA?
A.
22223
B.
4
C.
20
D.
2
Question #46
The majority of a cell's life cycle is spent in
A.
Cytokinesis
B.
G2 phase
C.
Interphase
D.
Mitosis
Question #47
A chromosome is made of
A.
DNA
B.
Chromatin
C.
Histones
D.
All of the above
Question #48
Proteins are made up of ______ different kinds of amino acid.
A.
46
B.
20
C.
4
D.
hundreds of
Question #49
Many viruses are inhibited by antibiotics
A.
FALSE
B.
TRUE
Question #50
In a "silent" mutation
A.
the codon that mutates causes a stop codon to occur instead of the placement of an amino acid.
B.
the codon that mutates causes a change in the amino acid specified.
C.
the codon that mutates does not cause a change in the amino acid specified.
D.
the mutation is not in DNA.
Question #51
In Translation, what does the translating?
A.
the amino acids
B.
the transfer RNA
C.
RNA polymerase
D.
the ribosome
Question #52
The chemotherapy drug taxol inhibits microtubule function. A cell treated with taxol would become stuck in which phase?
A.
telophase
B.
anaphase
C.
prophase
Question #53
What is the main function of DNA?
A.
to provide structural support to the cell
B.
to produce ATP
C.
to encode proteins
D.
to speed up cell reactions
E.
All of the above
Question #54
So, in terms of osmosis, what happens when you mistakingly (I hope it was a mistake) put a salt water fish into a freshwater fishtank?
A.
the fish consumes too much water and probably dies
B.
the fish doesn't consume enough water and probably dies
C.
The fish is fine, it can't change its water consumption to fit the environment
D.
None of the above
Question #55
A communityis defined as a group of the same species occupying a single habitat.
A.
TRUE
B.
FALSE
Question #56
Which of the following events in cellular respiration harvests the most electrons from glucose?
A.
Krebs Cycle
B.
Gycolysis
C.
Electron Transport Chain
D.
Calvin Cycle
Question #57
If a cell has a higher concentration of solutes inside its fluid than its surrounding environment, the cell is in _________
A.
an isotonic environment
B.
a platonic environment
C.
a hypertonic environment
D.
a hypotonic environment
Question #58
The role of transfer RNA is to _______________.
A.
to copy the appropriate DNA sequence for a particular protein.
B.
bring the appropriate amino acids to the ribosome.
C.
to assemble amino acids into a polypeptide chain.
D.
to be a copy of a portion of the DNA molecule.
Question #59
Which of the following processes produces O2 as a product?
A.
cell respiration
B.
hydrolysis
C.
photosynthesis
D.
condensation synthesis
Question #60
Somatic cells perform a form of cell division called ____________.
A.
Binary division
B.
Binary reduction
C.
Meiosis
D.
mitosis
Question #61
Which of the following events in meiosis specifically results in shuffling of a species' DNA?
A.
Crossing over
B.
Independent assortment
C.
Chromosomal reduction
D.
All of the choices are correct
Question #62
Mitosis occurs in support of sexual reproduction.
A.
TRUE
B.
FALSE
Question #63
Which is true regarding unsaturated fats?
A.
They have double bonded carbon atoms in their fatty acids
B.
All of these answers are associated with saturated fats
C.
They are associated with animal fat
D.
They have a higher melting point
Question #64
Which level of protein structure involves the formation of an alpha helix or beat pleated sheet?
A.
Quarternary structure
B.
Tertiary structure
C.
Secondary structure
D.
Primary structure
Question #65
Where would I go to watch active cellular respiration?
A.
smooth endoplasmic reticulum
B.
mitochondria
C.
rough endoplasmic reticulum
D.
lysosomes
Question #66
____________ prevents leaking between neighboring cells.
A.
____________ prevents leaking between neighboring cells.
B.
Centrioles
C.
Tight junctions
D.
Gap junctions
Question #67
Which is the correct order of steps in the Scientific Method?,,
A.
Observation, Question, Hypothesis, Prediction, Experiment, Conclusion
B.
Prediction, Hypothesis, Observation, Question, Experiment, Conclusion
C.
Observation, Hypothesis, Prediction, Experiment, Question, Conclusion
D.
Observation, Hypothesis, Question, Experiment, Conclusion, Prediction
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