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IB Biology I Review
IB Biology I Review
100 terms
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Biochemistry Review
Flashcards
100 cards
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Practice quiz
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Questions
100
Answers
1
Which nitrogenous base is only found in RNA?
cytosine
uracil
guanine
thymine
2
What is the function of the plasma membrane of abacterium?
for support
to attach to host cells
to control entry and exit of substances
to synthesize ribosomes
3
When nerve cells are organized as the brain it can think, what property does this represent?
emergent
learning
adaptive
anatomical
4
The outer side of the membrane differs from the inner side because the outer side contains
peripheral proteins
cholesterol
hydrophilic phosphate groups
glycoproteins
5
What is #4?
cytosine
thymine
guanine
uracil
6
Where do the directions for making proteins at the ribosomes come from?
rRNA
tRNA
nucleus
ribosomes
7
Which statement is correct about proteins
All proteins are enzymes
There are 20 different proteins
Antibodies are proteins
A protein is made of 20 different amino acids in a sequence
8
How many different amino acids are found naturally in biology?
25
15
64
20
9
Which of the following is not an example of a monosaccharide?
maltose
ribose
galactose
glucose
10
Water dissolves which of the following substances?
non-polar
hydrophobic
polar
neutral
11
Which statement is part of the cell theory?
Cells have DNA as their genetic material
Cells have cytoplasm surrounded by a membrane
Cells come from preexisting cells
Cells are composed of organic molecules
12
Where are proteins synthesized in a cell?
polypeptides
mitochondria
vesicles
ribosomes
13
What property of water allows it to stick to a dry surface, such as a wooden countertop?
adhesion
polarity
cohesion
solvent
14
The picture below is
amino acid
fatty acid
protein
carboxyl group
15
What is the pentose sugar that is found in RNA?
fructose
glucose
ribose
deoxyribose
16
What type of lipid has four fused rings as the main portion of their structure?
fatty acid
glycerol
phospholipid
steroid
17
If you place a cell with 80% water and 20% solute into a solution with 90% water & 10% solute
water will move out of cell
water will move into cell
there will be no net movement
solute will diffuse out of cell
18
A
fatty acid
is a long chain of mostly carbon and hydrogen atoms with a:
Oleic acid found on one end
Water molecule found on one end
Glycerol found on both ends
Carboxyl group found on one end
19
As the volume of a cell increases, what happens to the surface area to volume ratio?
it increases
it decreases
it stays the same
it depends on type of cell
20
When liquid water is heated, most of the energy that the water absorbs is used to:
make the water boil
raise the temperature ofthe water
break the covalent bondsbetween the hydrogen and oxygen
break the hydrogen bondsbetween the water molecules
21
The primary function of this protein is transport:
amylase
hemoglobin
keratin
myosin
22
Which of the following is a feature of exocytosis but not endocytosis?
secretion
use of ATP
vesicle formation
shape changes of membrane
23
Which property makes stem cells suitable fortherapeutic use?
They can divide by meiosis to form gametes
They can differentiate into specialized cells
They contain chemicals that can kill bacteria
Their chromosomes are suitable for gene transferand cloning
24
How many histone molecules make up a nucleosome?
1
9
8
4
25
Materials that leave and enter the golgi apparatus are
are transported by proteins
are packaged in or on vesicles
connect directly to the ER
are destined for export from the cell
26
The Singer-Nicolson Model is now known as what model?
Davson-Danielli
Lipid Bilayer
Watson-Salvadore
Fluid Mosaic
27
The process in which the cell takes up a substance by surrounding it with the membrane is
protein pump
passive transport
endocytosis
exocytosis
28
What type of macromolecule is substance E?
phospholipid
protein
lipid
carbohydrate
29
Amino acids join together during:
covalent bondage
a. Condensation reactions
a. Hydrolysis reactions
polar circles
30
Which of the following organelles has a double membrane?
vacuole
vesicle
mitochondria
ribosome
31
What carbon does the nitrogeneous base attach to on deoxyribose?
3
varies
1
5
32
What type of bond connects #9 to cytosine?
ionic
hydrogen
phosphodiester
covalent
33
Which of the following elements is not found in carbohydrates (in humans)?
carbon
hydrogen
nitrogen
oxygen
34
In a water molecule,
oxygen has slight - charge and hydrogen has slight + charge
a. All of the atoms have a slight positive charge.
oxygen has slight + charge and hydrogen has slight - charge
a. There is no charge at all.
35
Which structure is an example of a peripheral protein?
F
G
A
E
36
A plant storage substance is
glycogen
glucagon
cellulose
starch
37
Which organelle is responsible for synthesizing proteins?
golgi appartus
mitochondria
chloroplast
ribosome
38
Denaturation
of an enzyme
a. Can be reversed byfreezing below 0 degrees Celcius
a. Changes the substrate active site
a. Can be reversed bylowering the temperature
a. Changes the enzyme active site
39
The electron micrograph below shows which organelle?
vesicle
lysosome
golgi appartus
mitochondria
40
Which of the following processes includes all others?
passive transport
diffusion
facilitated diffusion
osmosis
41
In a cell, what is the effect of a
large surfacearea
to
volume ratio
?
Slowerrate of exchange of waste materials
Fasterheat loss
Faster rate of mitosis
Slowerintake of food
42
Which of the following is the primary carbohydrate storage molecule in animals?
triglyceride
glycogen
starch
glucose
43
What type of lipid is a major component of the cell membrane?
fatty acid
phospholipid
steroid
glycerol
44
In the structure of the cell membrane, glycoproteins are
carbohydrate tails attached to phospholipids
carbohydrate chains attached to membrane proteins
proteins attached to cholesterol
protein tails attached to phosopholipids
45
Which of the following types of cell transport moves against the concentration gradient?
facilitated diffusion
osomosis
diffusion
endocytosis
46
Differentiation results in cells
using all of their DNA during replication
mutating
changing type when they replicate
transcribing some of their DNA
47
Most biological molecules have this type of bond:
phosphodiester
ionic
hydrogen
covalent
48
1. A polysaccharide made of 5 glucose molecules has the following formula
C30H52O26
C5H10O5
5CH12O6
C30H60O30
49
The storage carbohydrate in liver and muscles is
fatty acids
cellulose
glycogen
protein
50
Glucose functions in
respiration
storage
photosynthesis
as a solvent
51
The DNA in eukaryotic cells is
circular and contained in nucleus
linear but not contained in nucleus
linear and contained in nucleus
circular and not contained in nucleus
52
The bond between two amino acids in a dipeptide is called a:
phosphodiester
dipeptide
covalent
peptide
53
What is the substrate similar to in competitive inhibition?
allosteric site
inhibitor
none of these
enzyme
54
Which organelle is labeled #10?
vacuole
smooth ER
chloroplast
golgi appartus
55
What gives each amino acid its character and leads to such a huge variety in proteins?
R group
amine group
COOH group
alpha carbon
56
Which of the following is not a characteristic of globular proteins?
functional
not soluble in water
commonly act as an enzyme
tightly bound
57
The image below is:
cis unsaturated fatty acid
trans fatty acid
saturated fatty acid
glycerol
58
Which of the following is NOT a major function of lipids in the human body?
As a short term energy source
Semi-permeable membrane of all cells
Insulation
Long term energy storage
59
Which of the following is a function of cholesterol in the cell membrane?
reduces the permeability of the membrane
provide a hydrophobic bilayer
increase fluidity of membrane
reduce amphipathic properties
60
What is the minimum number of each level of treatment for science experiments in IB Bio?
5
varies
6
3
61
Which organelle is not found in the cell shown below?
nucleus
lysosomes
ribosomes
chloroplasts
62
Flagella are sometimes found on prokaryotic cells and their primary function is
movement
reproduction
attachment
stability
63
Which is smallest: width of a virus, width of bacterium or thickness of cell membrane?
thickness of cell membrane
width of bacterium
width of virus
they are all the same size
64
The diagram below is:
deoxyribose
glucose
galactose
ribose
65
Which of the following is
not
an example of an
enzyme cofactor
?
pepsin
calcium ion
vitamin C
zinc ion
66
Condensation
is the
Breaking bigger molecules with the addition of water
Building of bigger molecules with the removal of water
Breaking of bigger molecules with the removal of water
Building bigger molecules with the addition of water
67
A codon codes for
genes
mRNA chain
protein
an amino acid
68
Which of the following is a unicellular organism that carries out all functions of life?
fungi
paramecium
plant
virus
69
This protein is found in tears. Its function is to kill bacteria.
Integrin
Collagen
Lysozyme
Amylase
70
Increasing
the substrate concentration
Increases the amount of enzyme
Increases the amount of product
Decreases the amount of product
Increases the number of active sites
71
Fructose is
a disaccharide
an amino acid
a monosaccharide
a polysaccharide
72
What type of macromolecule is the structure labeled C?
protein
lipid
carbohydrate
nucleic acid
73
Which organelle is responsible for detoxifying drugs?
smooth ER
lysosomes
nucleus
liver
74
Where does the inhibitor bind in non-competitive inhibition?
the substrate
active site
allosteric site
no binding takes place
75
Which of the following is not a purine?
they are all purines
adenine
guanine
thymine
76
Which number points to the organelle responsible for holding spindle fibers in place?
3
2
1
5
77
Lactose can be hydrolyzed into what two substances by the enzyme lactase?
fructose & sucrose
glucose and galactose
galactose & lactose
glucose & fructose
78
Which of the following would increase the rate of diffusion?
decrease in pressure
decrease in temperature
increase in temperature
thicker membrane
79
In evaporation ofwater
covalent bonds are broken
covalent bonds are formed
hydrogen bonds are formed
hydrogen bonds are broken
80
What type of fatty acid has all carbon atoms connected by single covalent bonds?
saturated
Cis-Unsaturated
triglyceride
trans-unsaturated
81
Which organelle is found on the organelle shown in the micrograph?
vesicle
rough ER
chromosomes
ribosomes
82
Maintaining a constant and stable internal environment is
sensitivity
homeostasis
metabolism
nutrition
83
Which features are present in prokaryotic cells?
DNA, cell membrane and ribosomes
nucleus, cell membrane and ribosomes
DNA, mitochondria and cell wall
DNA, plasma membrane and mitochondria
84
Which of the following is not a pyrimidine?
thymine
uracil
cytosine
adenine
85
The variable that is measured in an experiment is the
manipulated variable
responding variable
control group
controlled variable
86
What is the function of the organelle found on the organelle shown in the micrograph?
produce lipids
create vesicles
synthesize proteins
transport substances
87
What type of bond connects carbon #3 on one dexoyribose molecule with a phosphate group?
covalent
phosphodiester
hydrogen
ionic
88
All cells have which of the following?
nucleus
mitochondria
cell membrane
cell wall
89
These special extensions of bacteria allow for exchange of genetic material
pili
flagella
cilia
plasmid
90
Which of the following is an example of a prokaryotic cell?
plant cell
none of these
amoeba
liver cell
91
Which functions are carried out by all unicellular organisms?
nutrition, reproduction and response
metabolism, photosynthesis, and growth
growth, reproduction and photosynthesis
photosynthesis, nutrition and homeostasis
92
Which process is due to the fluidity of the cell membrane?
ATP production
osmosis
endocytosis
cell recognition
93
Which of the following is not a reason the Davson-Danielli model was changed?
not all membranes are identical or symmetrical
membranes are all the same in structure and function
a protein layer is not likely because it is largely nonpolar
evidence was gathered with the use of an electron microscope
94
What molecule is essential for endocytosis, exocytosis and Na+/K+ pump?
protein
sodium
potassium
ATP
95
Which of the following is NOT an example of an integral protein?
channel protein
glycoprotein
aquaporin
fibrous protein
96
How many hydrogen bonds are found between cytosine and guanine?
varies
2
3
none
97
What are the two fatty acid tails of a phospholipid made up of?
COOH groups
glycerol
hydrocarbons
saturated fatty acids only
98
Which of the following is
not a true statement
regarding enzymes:
Enzymes are used up in a reaction
a. Enzymes make it easier for a reaction to take place
a. Enzymes are specific
a. Enzymes catalyze reactions
99
If G is a pore protein in which water crosses the cell membrane via osmosis, what is it called?
protein channel
Na/K pump
peripheral protein
aquaporin
100
Water molecules are attached together by
covalent bonds
hydrogen bonds
hydrolysis
condensation
