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Biochemistry

Total questions: 81

Worksheet time: 58mins

Name
Class
Date
1.
Based on the graph, what temperature does this enzyme work best? 
a)
15 C
b)
40 C
c)
30 C
2.
Which of the following binds to the active site of an enzyme? 
a)
substrate
b)
product
c)
codon
d)
none of the above
3.
Identify the biomolecule
a)
Lipid
b)
Protein
c)
Carbohydrate
d)
Nucleic Acid
4.
In the picture, which represents a fatty acid?
a)
F
b)
G
c)
H
d)
J
5.
Carbohydrates are more easily metabolized than lipids. However, on a gram-for-gram basis lipids provide cells with more-
a)
nitrogen
b)
proteins
c)
structure
d)
energy
6.
The process used to split polymers; this is done by adding water
a)
Dehydration
b)
Hydrolysis
c)
Enzomatic
d)
Tetratonic
7.
The distortion (change in shape) of enzyme molecules which occurs at high temperatures is known as
a)
synthesis
b)
specificity
c)
replication
d)
denaturation
8.

True of False. Glycogen is a polysaccharide that is found in animals.

a)

True

b)

False

9.
Nucleotides are made up of three parts. The three parts are...
a)
DNA, RNA, and a sugar
b)
a lipid, a fat, and an oil
c)
a carbohydrate, a protein, and a fat
d)
a sugar, a phosphate, and a base
10.

The bond that joins two amino acids together

a)

double bond

b)

hydrogen bond

c)

ionic bond

d)

peptide bond

11.

Which of the following categories includes all the others on the list?

a)

Monosaccharide

b)

Carbohydrate

c)

Polysaccharide

d)

Starch

12.

The enzyme amylase can break the glycosidic linkages between glucose monomers only if the monomers are in (alpha) form. Which of the following could amylase break down?

a)

Glycogen, starch, and amylopectin

b)

Glycogen and cellulose

c)

Cellulose and Chitin

d)

Starch, chitin and cellulose

13.

What characteristics would you expect this amino acid to have?

a)

Polar/Hydrophobic

b)

Polar/Hydrophilic

c)

Nonpolar/Hydrophobic

d)

Acidic/Polar

14.

This molecule is a:

(most specific answer is correct).

a)

Steroid

b)

Lipid

c)

Protein

d)

Carbohydrate

15.

What chemical reaction likely bonded these 2 sugars together?

a)

Hydrolysis

b)

Dehydration synthesis

c)

Hydrogen bonding

d)

Covalent bonding

16.

When surrounded by water, this functional group is likely to:

a)

Accept a proton

b)

Donate a proton

c)

None of the choices are correct

d)

Become positively charged

17.

What functional group is shown?

a)

amino

b)

hydroxyl

c)

carboxyl

d)

sulfhydryl

18.
a)

sulfhydryl

b)

hydroxyl

c)

amino

d)

phosphate

19.
Classify the compound based on the functional group present.
a)
Amine
b)
Amide
c)
Aldehyde
d)
Ether
20.
Classify the compound based on the functional group present.
a)
aldehyde
b)
ketone
c)
carboxylic acid
d)
ester
21.

What functional group is -HC=O

a)

Carbonyl Aldehyde

b)

Carbonyl Ketone

c)

Carboxyl

d)

Methyl

22.

Classify the compound based on the functional group present.

a)

ketone

b)

ester

c)

carboxylic acid

23.
Modifies lipids and proteins from the ER; sorts them and packages them in vesicles
a)
Smooth ER
b)
Rough ER
c)
Nucleolus
d)
Golgi Apparatus
24.
Synthesizes lipids, stores calcium, detoxifies drugs and poisons
a)
Rough ER
b)
Smooth ER
c)
Golgi Apparatus
d)
Peroxisomes
25.
Site of protein synthesis
a)
Ribosome
b)
Mitochondria
c)
Chloroplast
d)
Nucleolus
26.

In the cell, macromolecules such as lipids and proteins are transported using____.

a)

Vesicles

b)

Ribosomes

c)

Rough endoplasmic reticulum

d)

DNA

27.

Which of these is NOT a part of the endomembrane system?

a)

Nuclear membrane

b)

Endoplasmic reticulum

c)

Golgi apparatus

d)

Mitochondria

28.
Which of the following is NOT a function of the endomembrane system?
a)
Compartmentalization (creates different areas in the cell which do different things)
b)
Detoxification
c)
Protein modification and transportation of proteins
d)
Creation of ATP (energy)
29.
Fuse with the plasma membrane
a)
Golgi Apparatus
b)
Lysosomes
c)
Secretory Vesicles
d)
Transport Vesicles
30.

Which organelle acts like a cellular stomach and degrades things?

a)

Lysosome

b)

Mitochondria

c)

Vacuole

d)

Vesicle

31.
A enzyme that is used in the membrane would move from the Golgi to the _____________ in a vesicle.
a)
Lysosome
b)
Ribosome
c)
Rough ER
d)
plasma membrane
32.
What is the function of the vacuole?
a)
Storage of water and nutrients
b)
Receives, modifies, and ships out proteins
c)
Transports ribosomes
d)
Transports proteins in a small bubble like package
33.

Contains hydrolytic (digestive) enzymes to break down worn out parts of the cell.

a)

vacuole

b)

lysosome

c)

ribosome

d)

nucleolus

34.

Found in both prokaryotes and eukaryotes

a)

mitochondria

b)

chloroplast

c)

ribosome

d)

lysosome

35.

This double-membraned organelle is the site of cellular respiration (production of ATP).

a)

chloroplast

b)

mitochondria

c)

smooth endoplasmic reticulum

d)

rough endoplasmic reticulum

36.

Semi-fluid matrix inside the cell (outside the nucleus) that contains organelles.

a)

cytoskeleton

b)

cytoplasm

c)

nucleus

d)

nucleolus

37.

Contains centrioles (in some cells)...important in microtubule organization and cell division.

a)

cytoplasm

b)

extracellular matrix

c)

cytoskeleton

d)

centrosome

38.

Specialized vesicle that contains enzymes that are used to catalyze reactions that produce hydrogen peroxide.

a)

peroxisome

b)

smooth endoplasmic reticulum

c)

rough endoplasmic reticulum

d)

chromoplast

39.

Structure in the nucleus that produces ribosomes.

a)

nucleus

b)

nucleolus

c)

cell membrane

d)

golgi apparatus

40.

Protein fibers that maintain the shape of the cell and assist in movement of cell parts.

a)

cytoplasm

b)

cystoplast

c)

cytoplast

d)

cytoskeleton

41.

which of the following terms refers to the order in which amino acids are linked together in a protein.

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

42.

The chain of amino acids folds and coils on itself

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

43.

The entire polypeptide forms a three-dimensional structure

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

44.

Two or more polypeptides attached together and work as one unit

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

45.

What is the name for a chain of amino acids?

a)

Polypeptide chain

b)

Triglycerides

c)

Polysaccharides

d)

Nucleotides

46.

What is the name of the bond that joins two amino acids together?

a)

Ester bond

b)

Glycosidic bond

c)

Peptide bond

d)

Nucleic bond

47.

Globular proteins typically serve functional purposes, while fibrous proteins typically serve structural purposes.

a)

True

b)

False

48.

The main bonding in the secondary structure of the protein is due to...

a)

covalent bonding

b)

ionic bonding

c)

hydrogen bonding

d)

polar bonding

49.

The two types of folding in the protein structure are

a)

polypeptide and nucleotide

b)

globular and fibrous

c)

alpha-helix and beta-pleated sheets

50.

Tertiary protein structures are mainly maintained by

a)

hydrogen bond

b)

disulfide bridges

c)

covalent bonds

d)

all of the above

51.

What is the monomer of Nucleic acids?

a)

Monosaccharides

b)

Fatty Acids

c)

Nucleotides

d)

Amino Acid

52.

Which bond is present in the sugar and phosphate group in a nucleotide?

a)

Phosphodiester bond

b)

Peptide Bond

c)

Ester Bond

d)

Glycosidic Bond

53.

Nitrogenous bases are classified into two. Which nitrogenous base is shown above?

a)

Pyrimidines

b)

Purines

54.

Which of the following nitrogenous bases are present ONLY in an RNA molecule?

a)

Adenine, Guanine, Cytosine, Thymine

b)

Adenine, Guanine, Cytosine, Ribose

c)

Adenine, Guanine, Cytosine, Uracil

d)

Adenine, Guanine, Cytosine, Deoxyribose

55.

What type of bond links two nitrogenous bases?

a)

Peptide bond

b)

Hydrogen Bond

c)

Covalent Bond

d)

Glycosidic Bond

56.
The primary sequence of a protein refers to the:
a)
Order of amino acids
b)
α-Helix or β-Pleated Sheet
c)
Interaction of subunits
d)
Hydrogen Bonding
57.

Which of the following describes the shape of a DNA molecule?

a)

double helix

b)

sphere

c)

pyramid

d)

rectangle

58.

In the DNA alphabet, T always pairs with:

a)

A

b)

T

c)

G

d)

C

59.
What type of transport is this?
a)
Endocytosis
b)
Diffusion
c)
Exocytosis
d)
Osmosis
60.
What type of transport is this?
a)
Endocytosis
b)
Facilitated Diffusion
c)
Active Transport Pump
d)
Osmosis
61.

Active transport is movement of particles through the cell membrane from a region of ...1... to a region of ...2... using energy in the form of ...3...

a)

1: lower concentration, 2: higher concentration, 3: NADPH

b)

1: higher concentration, 2: lower concentration, 3: NADPH

c)

1: higher concentration, 2: lower concentration, 3: ATP

d)

1: lower concentration, 2: higher concentration, 3: ATP

62.
The picture is an example of...
a)
active tranport
b)
passive transport
c)
diffusion
d)
osmosis
63.
What are 3 types of active transport?
a)
Riding a bike, Running through the mountains, walking on the beach
b)
Osmosis, Diffusion, Facilitated Diffusion
c)
Sodium/potassium Pump, Endocytosis, Exocytosis
d)
Throwing a ball, Playing tennis, driving a car
64.
The cell below is in a _____________ solution.
a)
Hypertonic
b)
Hypotonic
c)
Isotonic
65.
This egg has shrunk, what type of solution was it placed in?
a)
hypotonic solution
b)
hypertonic solution
c)
isotonic solution
d)
active transport
66.
What type of solution allows water to enter the plant cell?
a)
hypotonic solution
b)
hypertonic solution
c)
isotonic solution
d)
active transport
67.
What type of solution is this cell in?
a)
Isotonic
b)
Hypertonic
c)
Hypotonic
d)
diffused
68.

Is it safe to drink salt water?

a)

Yum, so salty!

b)

No, you could die of dehydration.

69.

Identify a peripheral protein

a)

structure a

b)

strucure b

c)

structure g

d)

structure h

70.

Plasma membranes are selectively permeable. This means

a)

anything can pass in and out

b)

the membrane regulates the passage of the material in and out of the cell

c)

glucose cannot enter the cell

d)

cholesterol cannot enter

71.

Small, nonpolar, hydrophobic molecules such as oxygen

a)

easily pass through the membrane's bilayer

b)

very slowly diffuse through the bilayer

c)

require transport proteins

d)

enter through endocytosis

72.

Membrane phospholipids

a)

have hydrophobic heads that face the center of the membrane and are shielded from water

b)

have hydrophilic tails that face outward

c)

remain fluid because they are tightly packed

d)

none of these

73.

The cholesterol associated with membranes

a)

is attached to proteins and extends into the environment surrounding the cell

b)

helps stabilize the membrane at body temperature

c)

is an abnormality resulting from a diet high in cholesterol

d)

both a and c

74.

A major function of glycoproteins and glycolipids in the membane is to

a)

glue cells together to form tissues

b)

allow cells to identify each other

c)

attach membrane to cytoskeleton

d)

help retain shape

75.

When doctors perform organ transplants, they choose a donor tissue match. Which component is being matched?

a)

membrane phospholipids

b)

cytoskeleton

c)

cell surface carbohydrates

d)

cholesterol

76.

What kinds of molecules pass through a cell membrane most easily?

a)

ionic

b)

small and hydrophobic

c)

large polar

d)

large and hydrophobic

77.

Which of the following allows water to move faster across cell membranes?

a)

aquaporins

b)

ATP

c)

peripheral proteins

d)

the sodium-potassium pump

78.

Which of the following would likely move through the lipid bilayer most rapidly?

a)

potassium

b)

an amino acid

c)

Carbon dioxide

d)

glucose

79.

These are the most diverse group of cytoskeletal elements and have no role in cell movement, just purely structural, and these are called (a)   filaments.

80.

Peroxisomes digest food and waste materials.

a)

TRUE

b)

FALSE

81.

This type of cytoskeleton is responsible for pulling replicated chromosomes to opposite ends of a dividing cell.

a)

Microfilament

b)

Intermediate filament

c)

Microtubules

d)

Actin filament

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