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WorksheetsUnit 3 and Unit 4
Total questions: 25
Worksheet time: 15mins
which of the following causes an enzyme to not work properly?
inhibitor
denatured
change in pH or temperature
all of these
which correctly matches the organelle to the function?
cell membrane - maintains homeostasis by allowing movement in and out of the cell
chloroplast - converts glucose to usable ATP energy
mitochondria - synthesizes proteins during translation of gene expression
ribosome - absorbs sunlight and performs the process of photosynthesis
how do enzymes work?
they speed up reactions by lowering the activation energy
they slow down reactions by lowering the activation energy
they speed up reactions by raising the activation energy
they slow down reactions by raising the activation energy
which is correctly matched to its function?
w - phospholipid semi-permeable
x - carbohydrate used for communication
y - cholesterol keeps the membrane fluid
z - protein channel used to transport large molecules
which is the enzyme?
x
y
z
which is NOT true of an enzyme?
they are proteins
they are catalysts and remain unchanged
they can build up or break apart molecules
they can only be used once
which organelle is shown and what process occurs?
mitochondria - cellular respiration
chloroplast - photosynthesis
mitochondria - photosynthesis
chloroplast - cellular respiration
which organelle is shown and what process occurs?
mitochondria - photosynthesis
chloroplast - photosynthesis
mitochondria - cellular respiration
chloroplast - cellular respiration
how do the process of photosynthesis and cellular respiration cycle matter?
the outputs of photosynthesis are the inputs for cellular respiration
the inputs of photosynthesis are the inputs of cellular respiration
the inputs of cellular respiration are the inputs of photosynthesis
the outputs of cellular respiration are the outputs of photosynthesis
which is the correct equation for photosynthesis?
light + water + carbon dioxide --> ATP + oxygen
light + water + carbon dioxide --> glucose + oxygen
glucose + oxygen --> water + carbon dioxide + ATP
glucose + oxygen --> water + carbon dioxide + light
which is the correct equation for cellular respiration?
light + water + carbon dioxide --> ATP + oxygen
light + water + carbon dioxide --> glucose + oxygen
glucose + oxygen --> water + carbon dioxide + ATP
glucose + oxygen --> water + carbon dioxide + light
which is true of a a higher concentration of water outside of the cell?
hypertonic solution - water would move into the cell, it would swell
hypotonic solution - water would move into the cell, it would swell
isotonic solution - water would move in and out equally
hypertonic solution - water would move out of the cell, it would shrink
which is true regarding active and passive transport?
active transport requires ATP energy
active transport moves molecules from high to low concentration
passive transport moves molecules against the gradient
osmosis is a type of active transport
which is correctly matched?
backbone - phosphate, sugar and base
backbone - phosphate and sugar
nucleotide - phosphate and sugar
nucleotide - phosphate and base
which letter is correctly matched to the structure?
w - backbone
x - phosphate
y - sugar
z - nitrogenous base
what determines the traits of organisms?
the order of nucleotides
the number of phosphates
the number of DNA molecules
the speed of the cell cycle
write the complementary strand of DNA below
T A C A G T G A
(a)
what causes cell differentiation?
the DNA is different in each type of cell
some cells have more or less DNA than others
only specific genes in the DNA are activated (turned on)
every cell has a different number of chromosomes
which correctly matches the phase to the part of the cell cycle?
mitosis - nuclear division
cytokinesis - growing
g - replicating DNA
s phase - cytoplasm dividing
what is DNA polymerase?
an enzyme used during DNA replication to build a complementary strand
a sugar used during DNA replication to build an identical strand
An enzyme used during mitosis to replicate identical cells
A sugar used during cytokinesis to separate the cytoplasm
Which best describes the DNA model during replication?
semi-conservative - one strand is original and one is new
semi-conservative - both strands are new
conservative - both strands are original
conservative - It is a double helix
what is a result of an unregulated cell cycle?
tumors
apoptosis
stem cells
specialized cells
what causes cancer?
unregulated cell division
cells stopping at checkpoints
cells skipping mitosis
staying in G0 phase
put the cells in order of the cell cycle.
ABCDEF
BDCFEA
DBCFEA
AEFCDB
what is the correct order of mitosis?
prophase, metaphase, anaphase, telophase
G1, S, G2
interphase, mitosis, cytokinesis
metaphase, anaphase, telophase, prophase
