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Biology Keystone Module A (2025) Flashcards | StudBud
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Biology Keystone Module A (2025)
Biology Keystone Module A (2025)
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This is a review from the information in Module A of the Keystone exam.
Flashcards
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Questions
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Answers
1
DNA and RNA are examples of
nucleic acids
carbohydrates
lipids
proteins
2
Proteins are made of
amino acids
cell membranes
DNA
ribosomes
3
The intermolecular attraction between UNLIKE molecules is called
polarity
surface tension
cohesion
adhesion
4
The plasma membrane is called "selectively permeable" because it
selects the types of molecules used in the cell membrane
only lets certain substances in and out of the cell
selects the proteins involved in transport
only allows large molecules in to the cell
5
The graph shows enzyme activity. Which best describes what happens to the enzyme at 63 degrees?
It gets used up
it changes shape and can no longer speed up the reaction
It continues to speed up the reaction
It begins to decrease the rate of reaction
6
Organisms can be classified as prokaryotes and eukaryotes. What do they all have in common?
plasma membrane and nucleus
plasma membrane and cytoplasm
cell wall and nucleus
cell wall and chloroplasts
7
What is the function of a carbohydrate?
store genetic information
create flexibility
water storage
store energy
8
Which cell is larger, prokaryotic or eukaryotic?
They are the same size
It is impossible to tell
Eukaryotic
Prokaryotic
9
What is the role of ALL enzyme?
to eat up the products
to change chemicals
they have no role
to speed up a chemical reaction
10
Anaerobic respiration is different from aerobic respiration because it does not use
oxygen
carbon
nitrogen
water
11
A substrate is changed to product in metabolic reactions. What do enzymes do in the reaction?
they provide the energy
they speed up the reaction
they have no role
they adjust the pH of the reaction
12
Sugars, starches, and cellulose are all examples of
carbohydrates
proteins
monomers
nucleic acids
13
Which is not a property of water vital to supporting life on Earth?
cohesion
high specific heat
adhesion
bonding
14
Biology is the scientific study of
cells
people
plants
life
15
What do C and D represent in the following picture?
sugar and energy
carbon dioxide and water
carbon dioxide and sugar
sugar and oxygen
16
The movement of WATER through a semipermeable membrane down the concentration gradient is
diffusion
facilitated diffusion
osmosis
active transport
17
In a chloroplasts of a plant cell, which energy transformation most likely occurs?
ATP to light
chemical to chemical
light to chemical
heat to electrical
18
Amino acids are the building blocks of
proteins
cell membranes
cell walls
ribosomes
19
What is the main energy currency of the cell?
the sun
ADP
mitochondria
ATP
20
The energy used in active transport comes from
water
photosynthesis
carbon dioxide
cellular respiration
21
We get energy from our bodies by our cells using food and oxygen in a process called
cellular respiration
photosynthesis
osmosis
diffusion
22
These macromolecules serve as a source of stored energy and are components of cell membranes.
proteins
nucleic acids
ribosomes
lipids
23
The following formula represents
life
cellular respiration
phosphorelation
photosynthesis
24
Passive transport always
happens at night
goes down the concentration gradient
goes up the concentration gradient
uses energy
25
The sodium-potassium pump is a type of
active transport
passive transport
diffusion
heredity
26
The following formula represents
photosynthesis
cells
cellular respiration
biology
27
What is the function of a nucleic acid?
carries and passes genetic information
maintains structure
stores energy
battles disease
28
What is the difference between aerobic and anaerobic respiration?
aerobic produces more ATP
anaeobic requires oxygen
aerobic produces less ATP
29
What do A and B represent in the following diagram?
sugar and oxygen
water and oxygen
sugar and water
oxygen and carbon dioxide
30
Which of the following is a biotic part of this ecosystem?
bubbles
termperature
dolphins
water
31
Which BEST compares energy transformations of photosynthesis and cellular respiration?
They both require chemical energy to make food.
They both store energy in bonds
Only photosynthesis causes an increase in kinetic energy
Only photosynthesis uses oxygen to create energy.
32
The site of cellular respiration is (#9)
cell membrane
mitochondria
centrioles
nucleus
33
Which functional characteristic of proteins distinguishes them from carbohydrates?
tendency to make cell membranes hydrophobic
large amounts of stored information
efficient storage of usable chemical energy
ability to catalyze biochemical reactions
34
The building blocks (monomers) of carbohydrates are called
lipds
water
animo acids
monosaccharides
35
The movement of particles from an area of high concentration to low concentration is called
diffusion
active transport
ATP
facilitated diffusion
36
Which is the smallest and still considered living?
organism
organ
cell
atom
37
This organelle contains folded membranes and sacs responsible for transporting materials (#5)
cell wall
mitochondria
nucleus
Endoplasmic reticulum
38
What do all cells have in common?
proteins and cell wall
ribosomes and nucleus
cell membrane and cytoplasm
cell wall and cell membrane
39
What are the building blocks (monomers) of nucleic acids?
sugar
nucleotides
amino acids
peptides
40
The picture is of a
cell membrane
ribosome
nucleus
cell wall
41
A substance that enables a chemical reaction to proceed faster or under different conditions.
catalyst
monomer
protein
polymer
42
What is one difference between active and passive transport?
Passive transport uses ATP
Active transport goes down the concentration gradient
Passive transport goes up the concentration gradient
Active transport uses ATP
43
Ribosomes make
mitochondria
energy
proteins
water
44
Which is an abiotic part of the following ecosystem?
sea gull
sea weed
water
dolphins
45
Facilitated diffusion is
osmosis
passive transport
active transport
none of these
46
The intermolecular attraction between like molecules is called
surface tension
adhesion
cohesion
polarity
47
Lipids are made of
glycerol and three fatty acids
nucleotides
amino acids
polymers
48
When a cell requires energy for work, that energy is supplied in the form of
ATP
mitochondria
ADP
charges
49
Which is the smallest?
organism
community
atom
population
50
Which characteristic is shared by ALL prokaryotes and eukaryotes?
use of cellular respiration for energy release
ability to move in response to environmental stimuli
use of organelles to control cell processes
ability to store hereditary information
51
Using a microscope, a student observes a small, green organelle in a plant cell. We call this a
mitochondria
chloroplast
cell wall
ribosome
52
When water freezes, it floats allowing
water to conserve energy
surface tension to not function
nothing to work
the water below to be insulated and life to be preserved
53
Chloroplasts undergo __________ and mitochondria undergo ___________.
photosynthesis, cellular respiration
cellular respiration, photosynthesis
respiration, metabolism
metabolism, respiration
54
Which is the largest?
atom
organs
community
cell
