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Biology Unit 4/S1 Final Review 19/20 Flashcards | StudBud
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Biology Unit 4/S1 Final Review 19/20
Biology Unit 4/S1 Final Review 19/20
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1
During the process of __________, the genetic message from DNA is transformed into mRNA.
transcription
translocation
transplantation
translation
2
DNA is a polymer consisting of monomers known as
amino acids.
peptides.
nucleotides.
phosphates.
3
How many amino acids are coded for by a strand of mRNA with six bases?
2
1
4
3
4
In the ladder analogy of the DNA molecule, the “rungs” of the ladder are
deoxyribose sugars.
deoxyribose sugar and phosphate.
phosphates.
paired nitrogen bases.
5
Which of the following is a factor that affects the rate of cellular respiration?
The amount of oxygen available
The amount of carbon dioxide available
The amount of ATP produced
All of the above
6
A cell's ribosomes are destroyed. Which process would be affected by this?
Cellular respiration
Osmosis
Protein synthesis
Photosynthesis
7
Unlike plants, fungi cannot make their own food because they do not have
DNA.
roots.
sunlight.
chloroplasts.
8
Which of the following is a DNA strand that would be complementary to
G-G-A-T-C-T-G-A-T-C-C-A-G-T-C-A?
A-A-G-C-T-C-A-G-C-T-T-G-A-C-T-G
C-C-U-A-G-A-C-U-A-G-G-U-C-A-G-U
C-C-T-A-G-A-C-T-A-G-G-U-C-A-G-U
C-C-T-A-G-A-C-T-A-G-G-T-C-A-G-T
9
In which way are photosynthesis and cellular respiration different?
Photosynthesis uses CO2 while cellular respiration produces CO2
Cellular respiration produces oxygen, while photosynthesis uses oxygen.
Cellular respiration stores ATP, while photosynthesis releases ATP.
Photosynthesis releases energy, while cellular respiration stores energy.
10
Which correctly describes a major difference between a plant cell and an animal cell?
A plant cell has a membrane and an animal cell does not.
A plant cell has chloroplast and an animal cell does not.
An animal cell has mitochondria and plant cell does not.
An animal cell has a cell wall and plant cell does not.
11
Which best explains why a bacterial cell is classified as prokaryotic?
Absence of nucleus
Absence of cell wall
Presence of nucleus
Presence of cell wall
12
RNA from a chipmunk is compared to RNA from a worm. Both will contain
ribose & uracil
deoxyribose & uracil
deoxyribose & thymine
ribose & thymine
13
Cellular respiration is carried out by
animals all of the time but plants only at night
all living organisms whenever energy is needed
animals but not plants
heterotrophs but not autotrophs
14
Identify a stimulus that would cause an increase in heart rate due to exercise.
an increase in carbon dioxide levels in the blood
a decrease in carbon dioxide levels in the blood
a decrease in the rate of cellular respiration
a decrease in body temperature
15
The sequence of ________ in a DNA molecule determines the protein that will be produced.
lipids
proteins
nucleotides
sugars
16
Which polypeptide chain is made from the DNA sequence:
T-A-C-C-A-C-G-G-A-C-A-T-C-G-T-A-T-C
Val - Leu - Met - Pro - Tyr - Stop
Val - Met - Pro - Val - Ala - Stop
Met - Leu - Asp - Iso - Tyr - Stop
Met - Val - Pro - Val - Ala - Stop
17
What is the building block (monomer) of nucleic acids?
Nucleotide
Fatty acid
Monosaccharide
Amino acid
18
In eukaryotes, where in the cell does DNA replication take place?
cytoplasm
ribosome
vacuole
nucleus
19
what is this reaction called? C
6
H
12
O
6
+ 6O
2
→ 6CO
2
+ 6H
2
O + ATP
cellular respiration (anaerobic)
photosynthesis
fermentation
cellular respiration (aerobic)
20
What belongs in the box to complete the cycle?
glucose and oxygen
ATP and ADP
water and chlorophyll
carbon dioxide and ATP
21
A negative feedback loop occurs when the response _______ the original stimulus
strengthens
diminishes
22
Which codon sequence matches the amino acid Lysine ?
both of these
AAG
none of these
AAA
23
Which statement is the best description of DNA Replication?
DNA opens up and each strand is used as a template for making a new strand.
RNA opens up the DNA and uses each strand as a template for a new strand.
DNA opens up and RNA copies it.
DNA opens up and completely unwinds to make two new molecules.
24
oxygen began to accumulate on Earth after the appearance of livings things with the ability to
form tissues.
breathe air.
reproduce sexually.
photosynthesize.
25
The ladder model of DNA is a simplified representation. In reality, the strands of DNA form a
single helix.
plasmid.
double helix.
polysaccharide.
26
What cell organelle produces 32-38 ATP when oxygen and glucose are available?
chloroplast
mitochondrion
cytoplasm
ribosome
27
Which of the following statements can be made based on the data in the graph?
The oxygen levels increased at night.
The rate of photosynthesis started to decrease at night.
The rate of photosynthesis increases when oxygen levels increased.
The carbon dioxide levels did not change.
28
Which of the following is the best example of an organism maintaining homeostasis?
a wolf panting after a chase
a spider catching an insect in a web
a cricket becoming infected by a virus
a mole digging tunnels in the ground
29
Which of the following enzymes adds DNA bases to build a new strand of DNA?
helicase
DNA polymerase
primase
ligase
30
Most body systems maintain homeostasis through
cyclic feedback
neutral feedback
negative feedback
positive feedback
31
What are the products of photosynthesis?
glucose and oxygen
energy and oxygen
glucose and carbon dioxide
carbon dioxide and water
32
The energy-transferring molecule used by cells is
CO2.
RNA.
ATP.
DNA.
33
The central dogma of molecular biology is centered upon the process of
protein synthesis
replication
carbohydrate synthesis
translation
34
Insulin’s effect is to
raise blood glucose levels, which decreases insulin production.
lower blood glucose levels, which decreases insulin production.
lower blood glucose levels, which increases insulin production.
raise blood glucose levels, which increases insulin production.
35
Which of the following best describes the arrangement of the backbone of the DNA molecule?
twisted
alternating
antiparallel
bonded
36
Cell membranes are composed mainly of
Chitin and starch
DNA and ATP
Nucleotides and amino acids
Proteins and phospholipids
37
The blueprint (code) for the polypeptide chain is
mRNA
ribosomes
mitochondria
DNA
38
RNA and DNA are what type of organic compound?
Lipid
Nucleic acids
Protein
Carbohydrates
39
positive feedback is when the response ________ the original stimulus.
diminishes
strengthens
40
sequence of DNA nucleotide bases is
T-A-G-T-A-G-T-A-G
, what is the complementary strand of mRNA?
A-T-G-A-T-G-A-T-G
A-U-C-A-U-C-A-U-C
T-A-G-T-A-G-T-A-G
A-A-U-C-G-G-A-A-C
41
In nucleotides, the letters A, G, C, and T represent
ribose sugars.
phosphate groups.
deoxyribose sugars.
nitrogen bases.
42
A gas given off by a plant in bright sunlight at 27°C, what is the gas?
ATP
water vapor
carbon dioxide
oxygen
43
Glucose belongs to which category of organic compound?
Lipids
Proteins
Nucleic acids
Carbohydrates
44
Identify the correct sequence
DNA → tRNA → mRNA → protein
DNA → mRNA → tRNA → protein
Protein →mRNA → tRNA → DNA
DNA → tRNA → protein → mRNA
45
One nucleotide base is changed
frameshift
point mutation
46
A nucleotide base is inserted or deleted
frameshift
point mutation
47
Because of photosynthesis
animals can get energy directly from the sun.
all of the above
plants produce carbon dioxide.
the atmosphere is rich in oxygen gas.
48
the relatively constant internal physical conditions of an organism or a state of balance
homeostasis
organ system
cell specialization
unicellularity
49
a segment of DNA that codes for a specific protein is a
allele
codon
gene
nucleotide
50
Matthew's body shivering is the ________ to a drop in temperature.
environmental condition
response
stimuli
input
51
What is the last stage in protein synthesis, in which amino acids are assembled by tRNA?
transcription
replication
translation
assembly
52
you eat sugary food, insulin is released, blood glucose concentrations decrease
negative feedback
positive feedback