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