Download Catalysts differ from enzymes in being

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A
1
Catalysts differ from enzymes in being
A
5
A)
functional at low temperatures
made up of protein
C ) not used up in a reaction
D ) functional at high temperatures
E ) produced by the cells
B)
Which of the following vitamins is necessary for
blood clotting?
A)
B)
C)
D)
E)
2
The Ti plasmid is often used for producing
transgenic plants. This plasmid is found in
A)
B)
C)
D)
E)
3
Rhizobium
Yeast
Agrobacterium
Euglena
Nitrobacter
Cell membrane is made up of
A)
B)
C)
D)
E)
6
In classification, the binomial nomenclature was
developed by;
A)
B)
C)
D)
E)
7
sugars
peripheral proteins
phospholipids
phospholipids and proteins
cellulose
Linnaeus
Malthus
Darwin
Wallace
Mendel
In which of the following conditions does the
number of lymphocytes increase in blood?
A)
B)
C)
D)
E)
4
Vitamin K
Vitamin B
Vitamin D
Vitamin A
Vitamin C
Broken limb
Strep throat
Diabetes
Hypertension
Hypotension
Which of the following is not a greenhouse gas?
8
A)
B)
C)
D)
E)
Methane
Water vapour
Chlorofluorocarbons
Sulphur dioxide
Ozone
The fossil of Archaeopteryx represents the
evidence of evolution of
A)
B)
C)
D)
E)
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mammals from birds
birds from reptiles
reptiles from amphibians
mammals from reptiles
amphibians from fish
1
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9
Keratin, the protein which makes the skin
impenetrable to pathogens, is a
A)
B)
C)
D)
E)
10
A
12
fibrous protein with a tertiary structure
globular protein with a tertiary structure
fibrous protein with a secondary structure
globular protein with a secondary structure
enzyme with a quaternary structure
A)
ATP
NAD
C ) reduced NAD
D ) reduced NADP
E ) ADP
B)
Which of the following is true for protein
synthesis?
13
A)
tRNA codons are complementary to mRNA anticodons
In criminal cases, DNA profiles are considered to
be solid evidence for convicting a murderer or
finding out innocence.
B)
Transcription is the formation of mRNA on the
sense strand of DNA
Which of the following techniques is used in DNA
profiling?
C)
During translation peptide bonds are formed
between amino acids
A)
B)
D)
Transcription takes place on the ribosomes
E ) Each type of amino acid is coded by only one
triplet code
11
Glucose is produced in the Calvin cycle in
chloroplasts. The reducing power for the
reduction of carbon dioxide to glucose is provided
by:
Root hairs absorb water from the soil by osmosis.
Then, water is carried to the root xylem to be
transported up to the leaves. Most of the water
moves from the root hair cells to the root xylem by
C)
D)
E)
14
Some people have their gall bladders removed by
an operation. Then, the digestion of which type of
food substance becomes difficult?
A)
A)
B)
B)
active transport
the apoplast way
C ) the symplast way
D ) the vacuolar way
E ) exocytosis
Paper chromatography
Crystallography
Electrolysis
Electrophoresis
Distillation
Vitamin
Protein
C ) Lipid
D ) Cellulose
E ) Starch
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A
15
Carbon dioxide is said to be a greenhouse gas
because
A)
A
19
A)
tuberculosis
leprosy
C ) tetanus
D ) food poisoning
E ) polio
B)
its concentration in air is always higher than other
gases
B)
it is used in photosynthesis
it absorbs infrared radiation
D ) it emits visible radiation
E ) it absorbs pressure
C)
20
16
A)
A)
B)
C)
D)
E)
Collagen
Albumin
Myosin
Keratin
Myoglobin
C)
D)
E)
21
Gene mutations are changes in the nucleotide base
sequence of DNA in a gene. Some mutations lead
to a frame shift. Which of the following gene
mutations does/do not lead to a frame shift?
A)
B)
C)
D)
E)
18
When a ripe tomato is pricked with a needle, a
watery fluid comes out. This fluid is stored in
Which protein is abundant in eggs?
B)
17
B.C.G. vaccine is used to control
Substitution and inversion
Only deletion
Only duplication
Only substitution
Deletion and duplication
Wilting of a plant results from excessive
Which of the following gases has a very high
affinity for haemoglobin in blood?
A)
Oxygen
Methane
C ) Sulphur dioxide
D ) Carbon monoxide
E ) Carbon dioxide
B)
22
Which of the following blood cells occur in largest
numbers in the blood of a healthy person?
A)
B)
A)
B)
C)
D)
E)
reproduction
respiration
absorption
photosynthesis
transpiration
the cell wall
the vacuole
ribosomes
golgi body
the cytoplasm
C)
D)
E)
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Neutrophils
Thrombocytes
Leucocytes
Erythrocytes
Monocytes
3
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A
23
In a food chain, small crustaceans feed on
zooplankton which feed on phytoplankton.
Phytoplankton are microscopic organisms that
produce their own food by photosynthesis. Small
fish eat small crustaceans and are eaten by larger
fish. Then, which of the following is true for small
crustaceans?
A
26
A)
it gains water by osmosis and becomes turgid
B ) it loses water by osmosis and becomes turgid
C ) it loses water by osmosis and becomes
plasmolysed
A)
They are primary consumers
They are producers
C ) They are tertiary consumers
D ) They are secondary consumers
E ) They are top carnivores
When a plant cell is placed in a hypertonic
solution
D)
it gains water by osmosis and becomes flaccid
E ) it takes in minerals by active transport
B)
27
Hypertension is the term used for
A)
24
B)
In which of the following ways is HIV
transmitted?
C)
D)
A)
B)
C)
D)
E)
Through insect bites
By kissing
Through breast feeding
By droplet infection
Through infected toilets
E)
28
increase in pulse
decrease in heart beat rate
increase in blood pressure
increase in heart beat rate
decrease in blood pressure
Antibiotic penicillin is obtained from a
A)
Fungus
Flowering plant
C ) Bacterium
D ) Virus
E ) Alga
B)
25
Hydrolysis of starch occurs with the help of the
enzyme
A)
B)
C)
D)
E)
Lipase
Amylase
Ligase
Sucrase
Trypsin
29
The contractile protein fibres in a skeletal muscle
are
A)
B)
C)
D)
E)
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myosin and troponin
troponin and tropomyosin
actin and tropomyosin
actin and myosin
myosin and tropomyosin
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30
Biopsy is carried out on
A
34
A)
blood from arteries
blood from veins
C ) blood from capillaries
D ) a tissue sample taken from a living body
E ) a tissue sample taken from a dead body
B)
31
A)
chromosomes are condensed in prophase I
crossing-over takes place during prophase I
C ) homologous chromosomes separate during
anaphase I
B)
Which of the following blood vessels has the
largest amount of elastic fibres in their walls?
A)
B)
C)
D)
E)
Hepatic artery
Vena cava
Renal artery
Hepatic portal vein
Aorta
Meiosis is a special type of cell division which
occurs only for the production of gametes.
Gametes are haploid and genetically non-identical.
They are haploid because during meiosis
35
D)
chromosomes are separated to chromatids in
anaphase II
E)
four cells are formed during telophase II
Proteins produced on the ribosomes that are
attached to the membrane of rough endoplasmic
reticulum are modified in
A)
32
B)
Cardiovascular disease is one of the major causes
of death in many countries. Which of the
following reduces the risk of CVD?
C)
D)
E)
A)
B)
C)
D)
E)
33
Stress
Sedentary life
A diet rich in fat
Smoking
Regular exercise
Which of the following structures prevents the
specific immune system from recognising a
bacterium as non-self?
36
lysosome
vacuole
golgi body
nucleus
cytoplasm
Which of the following is not a pathogen?
A)
Mosquito
HPV
C ) Mycobacterium tuberculosis
D ) HIV
E ) Clostridium difficile
B)
A)
Peptidoglycan cell wall
Capsid
C ) Slime capsule
D ) Lipid envelope
E ) Lipopolysaccharides
B)
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A
37
A triglyceride is made up of
A
40
A)
three fatty acid and a glycerol molecules
three cholesterol and a glycerol molecules
C ) two fatty acid and two glycerol molecules
D ) three glycerol and a fatty acid molecules
E ) one fatty acid and one glycerol molecule
Sometimes DNA sample found at the crime scene
is very small, not enough for profiling. The sample
is amplified by using:
B)
A)
B)
C)
D)
E)
38
Hospital-acquired infections are caused by
bacteria that have gained resistance to many
different antibiotics. Such bacteria are called
'superbugs'.
41
In zoos, captive breeding programs are used to
A)
Which of the following bacteria are superbugs?
B)
A)
B)
C)
D)
E)
Clostridium difficile
Pneumococcus
Sterptococcus
Tuberculosis bovis
E. Coli
C)
D)
E)
42
39
to reduce genetic variation within some species
display rare species of animals
to prevent breeding of some species
to conserve endangered species
to produce pure-bred animals
Tonoplast is
A)
the membrane of the chloroplast
the membrane sac of golgi body
C ) the membrane of the plant cell vacuole
D ) the pore on the cell wall
E ) the membrane of the lysosome
Which of the following is lost when a person's
cerebellum is damaged?
B)
A)
Spinal reflexes
Memory
C ) Swallowing
D ) Balance
E ) Control of heart beat
PCR
ETC
APC
MMR
CT
B)
43
Which of the following protects bacteria against
the enzymes present in the external medium?
A)
Cell membrane
Flagella
C ) Cell wall
D ) Capsid
E ) Slime capsule
B)
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A
44
In a flower, the embryosac is formed by
A
47
A)
An object which is denser than a particular fluid is
totally immersed in th fluid. The upthrust on the
object is.
meiosis
meiosis followed by two mitotic divisions
C ) mitosis followed by meiosis
D ) one meiotic division followed by three mitotic
divisions
A)
E)
D)
B)
B)
C)
mitosis
E)
45
The smallest functional and structural unit of
kidney is:
A)
B)
C)
D)
E)
46
I. The egg and the hot water will be in thermal
equilibrium after a long time despite the fact that
the bowl is made of metal or polystyrene.
II. The temperature of the mixture of egg and hot
water will be equal to 90°C.
III. The temperature of the mixture of egg and
hot water depends on the material of the bowl.
B)
C)
D)
E)
48
nephron
granulocyte
aldosteron
neurone
cortex
An egg is cooled in a refrigerator for a long time.
Then it is taken out from the refrigerator and then
put in a bowl of 90°C hot water. Which of the
following is / are correct?
A)
equal to the mass of the fluid displaced
equal to the volume of the fluid displaced
equal to the mass of the object
equal to the weight of the fluid displaced
greater than the weight of the object
II and III
Only I
Only III
I and III
I, II and III
A skier skies down a hill as shown in the figure. If
he wants to increase his speed when he leaves
point B.
What should he do?
A)
B)
He should ski down from a lower initial position.
He should use some heavy equipment so as to
increase his total mass.
C)
He should use some lighter equipment so as to
decrease his total mass.
D ) He should ski down from a higher initial position.
E ) He should decrease the contact area with snow to
reduce friction.
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A
49
A
51
The circuit shows a battery, having an e.m.f of 2
V and negligible internal resistance and an
ammeter. P and Q are resistors which are initially
at room temperature.When the switch is closed,
the ammeter reads 0.2A.
A narrow beam of parallel rays from the sun falls
as shown on a glass prism.
With the eye in the position shown the light seen is
yellow. If the eye is moved slightly upwards the
light seen will change colour. The next new colour
seen will be
What would be the reading of a voltmeter if
connected across resistor Q?
A)
A)
B)
C)
D)
E)
B)
Zero
3V
0.02 V
2V
6V
C)
D)
E)
52
50
Which of the following quantities can be measured
in the unit of kilowatt • hour?
A)
B)
C)
D)
E)
Electrical energy
Power rating
Fuse rating
Power
Current
magenta
blue
orange
green
red
A tin foil is crumpled by a boy. Why the surface of
the crumpled foil is not as shiny as before?
A)
Because light is refracted after striking the
surface.
B)
Because light is bent after striking the surface.
Because light is scattered in different directions
after striking the surface.
C)
D)
Because light is absorbed by the tin foil.
E ) Because light is diffracted through the surface of
the tin.
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A
A
53
A loaded car travelling along a straight, level road 56 Which one of the following shows the correct
at 20 m/s has a mass of 1200 kg. The driver
chemical formula for 'ammonium carbonate'?
switches off the engine and applies the brakes,
A ) NH4CO3
bringing the car to rest with a uniform retardation
in 5 seconds. At the end of 5 second the kinetic
B ) (NH4)2CO3
energy of the car has been changed into energy
C ) (NH3)3CO3
which is mainly
D ) (NH4)3C
A ) electrical
E ) NH3CO2
B ) mechanical
C ) heat
D ) chemical
57 A particle consisted of a nucleus with 11 protons
E ) potential
and 12 neutrons. Around the outside of it were 10
electrons arranged in two levels: 2,8. Which one of
the following statements is not true?
54
Which of the following quantities does not
represent energy?
A)
The particle isn't a neutral atom. It has a charge of
+1.
I. Mass × acceleration × displacement
II. Force × velocity
III. Impulse × time × displacement
B)
The mass number of the particle is 23.
The particle has a noble gas structure of its
electrons.
A)
D)
B)
C)
D)
E)
Only II
Only I
I and III
I and II
II and III
C)
E)
58
Which one of the following is not an example of a
physical change?
A)
55
Light year is a measurement of
B)
A)
C)
B)
C)
D)
E)
speed of rockets
stellar distances
speed of airplanes
speed of light
how many earth years it takes light to reach the
sun
The particle is a diatomic molecule.
The particle has 23 particles in its nucleus.
D)
E)
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Gentle heating of cologne.
Heating a mixture of iron and sulfur.
Cutting a paper into small pieces.
Melting of a candle.
Squeezing some air in a gas syringe.
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A
59
60
In a molecule of methane;
A
61
A)
Every hydrogen atom forms a triple bond with two
oxygen atoms.
B)
Every carbon atom forms a double covelent bond
with two oxygen atoms.
C)
Every hydrogen atom forms four covelent bonds
with four carbon atoms.
A)
Electrons : 18
Neutrons : 38
D)
Every carbon atom forms four covalent bonds with
four hydrogen atom.
B)
E)
Electrons : 12
Neutrons : 36
Every hydrogen is bonded to an oxygen
covalently.
C)
Electrons : 12
Neutrons : 17
D)
Electrons : 12
Neutrons : 32
E)
Electrons : 18
Neutrons : 17
is an anion of a group IV element in the periodic
table. If the charge of the nucleus of the ion is
given as 15, calculate its number of electrons and
neutrons.
Which one of the following conducts electricity?
A)
Pure alcohol
Solid Na2O
C ) Aqueous hydrogen chloride
D ) Liquid nitrogen
E ) Helium gas
B)
62
Which one of the following is an example of a nonmetal that conducts electricity?
A)
Calcium in the liquid form
Diamond in the solid form
C ) Carbon in the form of graphite
D ) Aluminium in the solid form
E ) Liquid nitrogen
B)
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A
63
Which one of the following best describes why
atoms need to form ionic compounds?
A)
65
Which one of the following statements about
particles in solids, and liquids is not true?
A)
Particles in a liquid are quite closely packed, but
have some freedom to move around.
B)
For most substances, the particles in the liquid are
slightly further apart than they are in the solid, and
so the liquid is less dense than the solid.
C)
When a liquid is heated, the heat energy makes the
particles lighter, which is why they escape more
easily from the surface of a hot liquid than a cold
one.
B)
Positively charged metal cations attract negatively
charged non-metal anions.
C)
Metal atoms need to lose electron whereas non
metal atoms need to gain. They form ions and ions
attract each other.
D)
Electron and proton transfer take place between a
metal atom and a non metal atom and they are
bonded chemically.
D)
Metal ions take electrons whereas non metal ions
give electrons. They become stable and form the
compound.
When a solid is heated, the particles vibrate faster
and faster until the forces holding them together
are broken, and they become free to move around.
E)
In liquids particles can vibrate and they can slide
over each other. That's why a liquid is known as a
fluid.
E)
64
Since the boiling points of metals and non metals
are very close to each other, they tend to form
compounds.
A
The word equation for the reaction between
sodium carbonate and nitric acid is
sodium carbonate + nitric acid (HNO3) →sodium
nitrate + carbon dioxide + water
The correct symbol equation is
A)
B)
C)
D)
E)
TEST BİTTİ
CEVAPLARINIZI KONTROL EDİNİZ
Na2CO3 + 2HNO3 → 2NaNO3 + CO2 + H2O
Na2CO3 + H2NO3 → Na2NO3 + CO2 + H2O
NaCO3 + HNO3 → NaNO3 + CO2 + H2O
Na2CO3 + 2HNO3 → Na2NO3 + CO2 + H2O
Na2CO3 + H2NO3 → NaNO3 + CO2 + H2O
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