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