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WorksheetsCells, Energy, and Enzymes
Total questions: 51
Worksheet time: 38mins
Name
Class
Date
1.
What is the most likely pathway of a newly created protein that will be excised from the cell?
a)
Golgi to ER to lysosome
b)
nucleus to ER to golgi
c)
ER to Golgi to secretory vesicles
d)
ER to lysosomes to vesicles
2.
What 4 structures are common between plant, animal, and bacterial cells?
a)
Golgi Apparatus, Chloroplasts, Ribosomes, Nucleus
b)
Cell Wall, Mitochondria, Cell Membrane, Cytoplasm
c)
Rough ER, Smooth ER, Nucleus, Ribosomes
d)
DNA, Cytoplasm, Ribosomes, Cell membrane
3.
Which would decrease the entropy?
a)
dehydration reaction
b)
hydrolysis reaction
c)
exothermic reaction
d)
digestion
4.
What is free energy?
a)
total energy in a system
b)
extra energy emitted by a system
c)
energy available to do work
d)
the same as entropy
5.
Moving free energy from a catabolic reaction to fuel an anabolic reaction is accomplished through -
a)
feedback regulation
b)
bioenergetics
c)
energy coupling
d)
entropy
6.
This reaction shows a(n) ____________ reaction
a)
Catabolic
b)
Anabolic
c)
Dehydration Synthesis
d)
Halogenation
7.
The area that the substrate fits into on the enzyme is called the:
a)
Active Site
b)
Allosteric Site
c)
DiSulphide Bridge
d)
β-Pleated Sheet
8.
Enzymes catalyze reactions by ___________ Activation Energy.
a)
Increasing
b)
Decreasing
9.
At high temperatures enzyme activity declines because of:
a)
Denaturation
b)
Decreased Kinetic Motion
c)
Increased H-Bonding
d)
Dissociation of Ionic Compounds
10.
The molecule an enzyme is working on is called the:
a)
Substrate
b)
Solvent
c)
Allosteric Inhibitor
d)
CoEnzyme
11.
When a molecule can occupy the same active site as the substrate, a situation called __________________ can result
a)
Competitive lnhibition
b)
Allosteric Regulation
c)
Non-Competitive Inhibition
d)
Feedback Inhibition
12.
A receptor site that a molecule can bind to that changes the shape of the active site is called a(n):
a)
Allosteric Site
b)
Active Site
c)
DiSulphide Bridge
d)
MHC Receptor
13.
Molecules that bind to enzymes and enhance an enzyme's ability are called:
a)
CoFactors
b)
CoEnzymes
c)
Allosteric Inhibitors
d)
Allosteric Activators
14.
Organic molecules that temporarily bind to enzymes and enhance an enzyme's ability are called:
a)
CoFactors
b)
CoEnzymes
c)
Allosteric Inhibitors
d)
Allosteric Activators
15.
The __________ law of thermodynamics states that entropy is always increasing.
a)
first
b)
second
c)
third
d)
zeroth
16.
ΔH value in an endothermic reaction is a positive number.
a)
True
b)
False
17.
The equation that relates enthalpy, temperature and entropy is
a)
Hess's Law
b)
Second Law of Thermodynamics
c)
Gibbs Free Energy
d)
Calorimetry
18.
6. The formation ½ A2 + 2 B2 + C --> CAB4 has an enthalpy of formation of -104 kJ and a change in entropy of -60.8 J/K at 30 °C. What is the free energy and spontaneity of the reaction?
a)
-85.6 kJ, spontaneous
b)
-18.3 kJ, not spontaneous
c)
+18.3 kJ, spontaneous
d)
+85.6 kJ, not spontaneous
19.
What does an exergonic reaction do with energy?
a)
Releases Energy
b)
Stores Energy
20.
What does an endergonic reaction do with energy?
a)
Released energy
b)
Stores energy
21.
Is the reaction from ATP to ADP exergonic or endergonic?
a)
Exergonic
b)
Endergonic
22.
What molecule is the high energy molecule of the cell?
a)
Adenosine Diphosphate (ADP)
b)
Carbs
c)
Lipids
d)
Adenosine triphosphate (ATP)
23.
Is this reaction endergonic or exergonic?
a)
Exergonic
b)
Endergonic
24.
Which is true
a)
Delta G > 0
b)
Delta G < 0
c)
Delta G = 0
25.
Is this reaction endergonic or exergonic?
a)
Exergonic
b)
Endergonic
26.
Which is true?
a)
delta G > 0
b)
delta G < 0
c)
delta G = 0
27.
Cell Membrane:
a)
The protective outer layer that controls what enters and leaves the cell.
b)
Stores information on DNA molecules / Directs and controls the activities of the cell.
c)
A folded membrane that moves materials around inside cells / Also acts as the site of manufacturing materials needed by the cell.
d)
The smallest organelle with a huge job / Makes proteins, which are the building blocks of the body.
28.
Nucleus:
a)
Stores information on DNA molecules / Directs and controls the activities of the cell.
b)
A folded membrane that moves materials around inside cells / Also acts as the site of manufacturing materials needed by the cell.
c)
The smallest organelle with a huge job / Makes proteins, which are the building blocks of the body.
d)
A small sack that stores water and food until the cell needs it / Stores waste temporarily until the cell gets rid of it.
29.
Endoplasmic Reticulum:/ER
a)
The smallest organelle with a huge job / Makes proteins, which are the building blocks of the body.
b)
A folded membrane that moves materials around inside cells / Also acts as the site of manufacturing materials needed by the cell.
c)
A small sack that stores water and food until the cell needs it / Stores waste temporarily until the cell gets rid of it.
d)
The protective outer layer that controls what enters and leaves the cell.
30.
Vacuole:
a)
A gel-like material that streams through the cell holding all the other organelles / Also stores chemicals needed for cell processes.
b)
The smallest organelle with a huge job / Makes proteins, which are the building blocks of the body.
c)
A small sack that stores water and food until the cell needs it / Stores waste temporarily until the cell gets rid of it.
d)
Stacks of pancake-like membranes that package materials to ship out of the cell.
31.
Mitochondrion
a)
Stacks of pancake-like membranes that package materials to ship out of the cell.
b)
Small sacks with pores / Contains digestive enzymes that get rid of waste, worn-out cell parts, and captured invaders.
c)
(plural is Mitochondria): Bean-shaped organelle filled with folded membranes / Breaks down glucose to release energy for cell functions
d)
The protective outer layer that controls what enters and leaves the cell.
32.
Lysosome:
a)
The smallest organelle with a huge job / Makes proteins, which are the building blocks of the body.
b)
Small sacks with pores / Contains digestive enzymes that get rid of waste, worn-out cell parts, and captured invaders.
c)
Bean-shaped organelle filled with folded membranes / Breaks down glucose to release energy for cell functions
d)
Stacks of pancake-like membranes that package materials to ship out of the cell.
33.
Ribosomes
a)
a part of the cell containing DNA and RNA and responsible for growth and reproduction
b)
non membrane bounded organelles responsible for protein synthesis;found in eukaryotes and porkaryotes
c)
System of internal membranes within the cytoplasm. Membranes are rough due to the presence of ribosomes. functions in transport of substances such as proteins within the cytoplasm
d)
An endomembrane system where lipids are synthesized, calcium levels are regulated, and toxic substances are broken down.
34.
Prokaryotic cell
a)
a cell that lacks a nucleus and other membrane bound organelles; includes achaea and bacteria
b)
a cell containing a nucleus and other membrane bound organelles
c)
the idea that the mitochonria and chloroplasts were once free living and were engulfed by other prokaryotic cells.
d)
part of the cell containing DNA and RNA and responsible for growth and reproduction
35.
Rough Endoplasmic Reticulum
a)
non membrane bounded organelles responsible for protein synthesis;found in eukaryotes and porkaryotes
b)
a part of the cell containing DNA and RNA and responsible for growth and reproduction
c)
System of internal membranes within the cytoplasm. Membranes are rough due to the presence of ribosomes. functions in transport of substances such as proteins within the cytoplasm
d)
An endomembrane system where lipids are synthesized, calcium levels are regulated, and toxic substances are broken down.
36.
What kind of cells have a cell wall?
a)
Plants and Animals
b)
Animals
c)
Plants
d)
Plants and Bacteria
37.
Based on the graph, what is the optimal temperature for this enzyme?
a)
15oC
b)
40oC
c)
30oC
d)
35oC
38.
Which of the following conclusions can be drawn from this graph?
a)
The optimum pH of the enzyme is 6.6.
b)
The optimum pH of the enzyme is 5.8
c)
The enzyme’s activity increases as pH increases 5.0 to 9.0
d)
The enzyme’s activity is greater around pH of 8.0 .
39.
The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?
a)
Enzymes increase the energy of the reactants.
b)
Enzymes decrease the energy level of the products.
c)
Enzyme decrease the activation energy of the reaction.
d)
Enzymes reverse the direction of the reaction.
40.
Each enzyme only has 1 substrate that will fit its active site. What does this demonstrate?
a)
reusablility
b)
denaturation
c)
specificity
d)
fragility
41.
Enzymes are...
a)
nucleic acids
b)
proteins
c)
lipids
d)
carbohydrates
42.
Which line represents an enzyme-catalyzed reaction?
a)
Line 1
b)
Line 2
43.
What is the term used to describe the best temperature or pH an enzyme works at?
a)
product
b)
optimum
c)
substrate
d)
operation
44.
What will happen to the substrate in this reaction?
a)
It will be hydrolyzed
b)
It will break into products
c)
Nothing; the active site is blocked
d)
It will disappear
45.
Which active transport method helps to get rid of waste by using vesicles?
a)
diffusion
b)
facilitated diffusion
c)
sodium potassium pump
d)
exocytosis
46.
An enzyme speeds up a chemical reaction in the cell, but can only be used once?
a)
true
b)
false
47.
Shuttles proteins and lipids to various locations such as the Golgi apparatus
a)
Secretory Vesicles
b)
Transport Vesicles
c)
Lysosomes
d)
Peroxisomes
48.
Synthesizes lipids, stores calcium, detoxifies drugs and poisons
a)
Rough ER
b)
Smooth ER
c)
Golgi Apparatus
d)
Peroxisomes
49.
Fuse with the plasma membrane
a)
Golgi Apparatus
b)
Lysosomes
c)
Secretory Vesicles
d)
Transport Vesicles
50.
Found in plants only; made of cellulose
a)
Cell Membrane
b)
Chloroplast
c)
Centriole
d)
Cell Wall
51.
Goo found between the nucleus and cell membrane
a)
Cytoskeleton
b)
Cytosol
c)
Cortisol
d)
Centriole
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