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Biology 101 flashcards
1
Q

Asteroids are majorly located in the?

A. Asteroid belt between Mars and Jupiter
B. Near the orbit of the Earth
C. Asteroid belt near the sun
D. Near the moon
E. Asteroid belt between Jupiter and Venus

A

A.
Asteroid belt between Mars and Jupiter

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2
Q

As opposed to the Earth, the moon has craters because of?

A. Displacement of its surface
B. Chemical composition of the land
C. Meteoric impacts on its surface
D. Volcanic eruptions blasting holes
E. Changing temperature

A

C.
Meteoric impacts on its surface

Impact craters were formed a billion years ago when meteorites, asteriods and comets struck its surface. The Earth on the other hand has an atmosphere which causes asteriods to burn up before they touch the surface.

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3
Q

The meaning of refraction is?

A. Moving of energy at an extremely rapid rate
B. Changing in speed of light
C. Bending of a wave when it enters a medium with different wave
D. Movement of waves made of oscillating magnetic and electric fields
E. Reflection of light

A

C.
Bending of a wave when it enters a medium with different wave

The refraction of light when it goes through from a fast medium to a slow medium bends the light ray toward the normal to the boundary between the two mediums.

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4
Q

Cellulose is a part of a cell wall which is essential in?

A. Pathway of energy
B. Excretion
C. Energy storage
D. Protection and Structure
E. Power house of the cell

A

D.
Protection and structure

The plant cell wall is made up of cellulose. Cellulose is considered a complex sigar becasue it is used in both protection and structure. Cellulose is als composed of a structural carbohydrates.

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5
Q

Red blood cells are red becasue of?

A. Platelets
B. Leukocytes
C. Hemoglobin
D. Plasma
E. Erythropoietin

A

C.
Hemoglobin

A protein called Hemoglobin in our red blood cells. The protein contains 4 iron atoms that bind to oxygen. The iron component is what makes our blood colored red and how oxygen is carried around our blood stream.

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6
Q

Fraunhoffer lines in the Solar spectrum correspond to radiation…

A. Emitted by the inner part of the sun but absorbed by its outer atmosphere
B. Not absorbed due to imperfect instruments
C. Not emitted by the sun
D. Emitted by the sun but absorbed by earths atmosphere
E. Emitted by the stars

A

A.
Emitted by the inner part of the sun but absorbed by its outer atmosphere

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7
Q

The birds Charles Darwin studied and influenced his research on Natural Selection were?
A. Condors
B. Finches
C. Puffins
D. Dippers
E. Cranes

A

B.
Finches

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7
Q

Which are NOT social insects?

A. Bees
B. Ants
C. Spiders
D. Termites
E. Wasps

A

C.
Spiders

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8
Q

What is produced on heating a mixture of potassium and ammonium chloride?
A. Urea
B. Ethanamide
C. Methanamide
D. Ethanamine
E. Potassium Chloride

A

A.
Urea

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9
Q

Which is NOT part of Earth’s internal structure?

A. Lithosphere
B. Crust
C. Ionosphere
D. Mantle
E. Core

A

C.
Ionosphere

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10
Q

Which term is used to define atoms of different elements, that contain the same # of neutrons?
A. Isotones
B. Isotopes
C. Isobars
D. Isomers
E. None

A

A.
Isotones

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11
Q

General electronic configuration for D-block elements is?

A. (n-1)d1-5ns1-2
B. (n-1)d1-10ns1-2
C. (n-1)d1-10ns0-2
D. (n-1)d1-5ns0-1
E. None

A

C.
(n-1)d1-10ns0-2

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12
Q

Which Alkali metal halide has the lowest lattice energy?

A. LiF
B. KBr
C. NaC1
D. CsI
E. Cacl

A

D.
CsI

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13
Q

Meatl ions like Ag+, Cu2+ etc. act as?

A. Bronsted Acids
B. Lewis Acids
C. Bronsted base
D. Lewis base
E. None

A

B.
Lewis acids

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14
Q

The oxidation # of oxygen in OF2 is?

A. +2
B. -2
C. +1
D. -1
E. 1

A

A.
+2

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15
Q

3 axes of a crystal lattice are mutually perpendicular but all lattice parameters are unequal. The crystal is?
A. Cubic
B. Tetragonal
C. Orthorhobmic
D. Hexagonal
E. Pentagonal

A

C.
Orthorhombic

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16
Q

Conductors, insulators, and Semi-conductors differ from each other due to property of?
A. Ability of the current they carry
B. Formation of crystal lattice
C. Binding energy of their elements
D. Mutual width of their energy gaps
E. None

A

D.
Mutual width of their energy gaps

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17
Q

Fermi energy level is?

A. The Min energy of electrons at 0K
B. Max energy of electrons at 273K
C. Max energy of electrons at 0K
D. Min energy of electrons at 273K
E. Min enegy of elctrons at 275K

A

C.
Max energy of electrons at 0K

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18
Q

What can be used for measuring a rapidly changing temperature is a?

A. Thermocouple thermometer
B. Gas thermometer
C. Platinum resistance thermometer
D. Vapor pressure thermometer
E. Both A/D

A

A.
Thermocouple thermometer

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19
Q

Expansion during heating..

A. occurs only in a solid
B. Increase the weight of a material
C. Decrease the density of the material
D. Occurs at same rate for all liquids/solids
E. occurs only in gases

A

C.
Decrease the density of the material

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20
Q

A ring-shaped piece of metal is heated. If the material expands the hole will?
A. Expand
B. Contrast
C. Expand or contrast depending on width of ring
D. Expand/Contrast depending on value of the coefficient of expansion
E. Will have no effect

A

A.
Expand

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21
Q

A solid ball of metal has speherical cavity inside it. Ball is heated. Volume of the cavity will?
A. Decrease
B. Increase
C. Remain unchanged
D. Have its shape changed
E. Its weight will decrease

A

B.
Increase

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22
Q

If a bimetallic strip is heated it will?

A. Bend toward metal w/lower thermal expansion coefficient
B. Bend toward metal w/higher thermal expansion coefficient
C. Twist itself into a helix
D. No Bend
E. Will expand linearly

A

A.
Bend toward the metal w/lower thermal expansion coefficient

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23
Q

Heating a liquid of coefficient of cubical expansion a in a container having coefficient of linear expansion a/3, the level of liquid in the container will?
A. Rise
B. Fall
C. Will remain almost stationary
D. It is difficult to say
E. Will rise at first, then remain constant at a certain level

A

C.
Will remain almost stationary

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24
Q

When water is heated from 0 celcius to 10 Celcius it volume..

A. increases
B. Does not change
C. first decreases then increases
D. first increases then decreases
E. none

A

C.
first decreases then increases

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25
Q

A beaker is filled w/water at 4 celcius. At one time the temp is increased by a few degrees above 4 celcius at another time it is decreased by a few degrees below 4 celcius. One shall observe that?
A. Level remains constant
B. water overflows both times
C. water overflow in latter case, comes down in previous case
D. Previous case water overflow, latter case levels come down
E. nothing happens

A

B.
Water overflows in both cases

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26
Q

Bimetal made of Copper.Iron strips welded together is straight at room temp. held vertically in hand so that iron strip is towards the left hand and copper strip is towards the right side. This bimetal is then heated by flame. The bimetal strip will?
A. Remain straight
B. Bend towards right
C. Bend towards left
D. Have no change
E. Its thermal expansion coefficient will increase

A

C.
Bend towards left

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27
Q

Which planet is the farthest from Earth?

A. Jupiter
B. Saturn
C. Uranus
D. Neptune
E. Venus

A

D.
Neptune

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28
Q

When a convergent beam of light is incident on a plane mirror, the image formed is?
A. Upright and real
B. Upright and vertical
C. Inverted and virtual
D. Inverted and real
E. Opaque

A

C.
Inverted and virtual

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29
Q

A Plane mirror reflectinga ray of incident light is rotated through an angle 6 about an axis through the point of incidence in the plane of the mirror perpendicular to the plane of incidence, then..
A. The reflected ray does not rotate
B. The reflected ray rotates through an angle 0
C. The reflected ray rotates through an angle 29
D. The incident ray is fixed
E. The reflected ray rotates through an angle 10

A

C.
The reflected ray rotates through an angle 29

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30
Q

A monochromatic beam of light passes from a denser medium to a rarer medium. As a result
A. Its velocity increases
B. Its velocity decreases
C. It frequently decreases
D. It frequently increases
E. Its wavelength decreases

A

A.
Its velocity increases

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31
Q

When a ray of light enters a glass slab from air…

A. Its Wavelength decreases
B. Its wavelength decreases
C. Its frequency increases
D. its frequency decreases
E. Neither wavelength nor frequency changes

A

A.
Its Wavelength decreases

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32
Q

While analyzing the spectrum of any specific galaxy, when they are moving away from each other, the speed of spectrum is what? Asssume Ao = 5000A4 and X\ = 5050A4 are?
A. 30000 km sec”1
B. 3000 km sec”1
C. 300 km sec”1
D. 30 km sec”1
E. None

A

B.
3000 km sec”1

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33
Q

Proxima Centauri, Which is the nearest star, appears after how many years?
A. 1.3 years ago
B. 2.3 years ago
C. 3.3 years ago
D. 4.3 years ago
E. 1 year ago

A

D.
4.3 years ago

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34
Q

Where are blood cells made?

A. Liver
B. Kidneys
C. Heart
D. Lungs
E. Bone marrow

A

E.
Bone Marrow

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35
Q

X-ray telescope have what shape?

A. Barrel-like shape
B. Dish-like shape
C. Circular shape
D. Elliptical shape
E. Disk-like shape

A

A.
Barrel-like shape

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36
Q

Neutron has a molar mass of?

A. 1.086650 g/mol
B. 1.86650 g/mol
C. 1.0086650 g/mol
D. 1.0086650 g/mol
E. 1.0065 g/mol

A

C.
1.0086650 g/mol

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37
Q

The testing of carbon dioxide present in the air can be done by?

A. By passing air through limewater
B. Passing air through cold water
C. Passing air through hot water
D. By adding soda in cold water
E. All of these

A

A.
By passing air through limewater

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38
Q

The major portion of earths surface is covered with?

A. Trees
B. Animals
C. Water
D. B and C
E. None

A

C.
Water

39
Q

The Temp. of the land is regulated by which 2 processess?

A. Oceanic currents and conduction current
B. Transerval currents and convection current
C. Oceanic currents and convection currents
D. convection current only
E. None

A

C.
Oceanic currents and convection currents

40
Q

The location of Mid Atlantic ridge is at?

A. Bottoms of Earths surface
B. Bottom of Atlantic ocean
C. Surface of Atlantic ocean
D. Mid of Atlantic ocean
E. None

A

D.
Mid of Atlantic Ocean

41
Q

The dissolution of covalent compounds in water is by formation of?

A. Oxygen bond
B. Carbon bond
C. Nitrogen bond
D. Hydrogen bond
E. Both Carbon and nitrogen

A

D.
Hydrogen bond

42
Q

The main composition compounds of acid rain are?

A. Sulphuric acid and acetic acid
B. sulphuric acid and nitric acid
C. Nitric acid and acetic acid
D. Nitric acid and phophate acid
E. None

A

B.
Sulphuric acid and nitric acid

43
Q

**The deformation of Earths crust is carried out under which field of geology?
A. Metatonic
B. Pectonic
C. Tectonic
D. Hypotonic
E. None

A

C.
Tectonic

44
Q

Transform fault occurs at?

A. San Andreas Fault of California
B. Anatolian fault of northern Turkey
C. At pacific Bay
D. Both A and B
E. None

A

C.
Pacific Bay

45
Q

Name 3 identifiable types of Earthquake movements or shock waves?

A. P,Q and R wave
B. P,S, and L wave
C. S,Q and L wave
D. P,R and L wave
E. None

A

B.
P, S and L wave

46
Q

With increase in population, the demand for fresh water has?

A. Decreased
B. Increased
C. Remained constant
D. Not known
E. None

A

B.
Increased

47
Q

**What land alteration human activities affect the hyrological cycle? **

A. Biological Characteristics
B. Physical Characteristics
C. Chemical Characteristics
D. All
E. None

A

D.
All of them

48
Q

Land slope occurs in which way?

A. Upward west to the east
B. Upward east to the west
C. Downward west to the east
D. Downward east to the west
E. Upward north to the south

A

C.
Downward west to the east

49
Q

Ozone is an _____ of oxygen

A. Isotope
B. Unitope
C. Allotrope
D. Element
E. None

A

C.
Allotrope

50
Q

which Era is dubbed the age of Prokaryotic microbes?

A. Phanerzoic
B. Archean
C. Proterzoic
D. Prokaryotic era
E. Precambrian

A

E.
Precambrian

51
Q

What part of the brain is responsible for speech?

A. Hippocampus
B. Corpus callosum
C. Temporal lobe
D. Parietal lobes
E. Frontal lobe

A

E.
Frontal lobe

52
Q

Pithecanthropus erectus fossil was found in?

A. Texas
B. Japan
C. Java
D. China
E. India

A

C.
Java

53
Q

The correct sequence stages in the evolution of the modern man is?

A. Home erectus, Australopithecus, Neanderthal man, Cro-Magnon man, Modern man
B. Neanderthal man, Australopithecus, Cro-Magnon man,Home erectus, Modern man
C. Australopithecus, Home erectus, Neanderthal man, Cro-Magnon man, Modern man
D. Australopithecus, Neanderthal man, Cro-Magnon man, Home erectus, Modern man
E. Home erectus, Neanderthal man, Australopithecus, Cro-Magnon man, Modern man

A

C.
Australopithecus, Home erectus, Neanderthal man, Cro-Magnon man, Modern man

54
Q

Which of the changes involved is irrelevant in the evolution of man?

A. Increase ability to communicate with others and develop community behavior
B. Perfection of hand for tool making
C. Change of diet from hard nuts and hard roots to soft food
D. Ability to speak
E. Loss of tail

A

E.
Loss of tail

55
Q

Which fossil man has been known from the Shivalik hills in india?

A. Zinjanthropus
B. Ramapithecus
C. Pithecanthropus
D. Sinanthropus
E. None

A

B.
Ramapithecus

56
Q

What does HIV stand for?

A. Human Insufficiency Virus
B. Helper Insufficiency Virus
C. Helper Immunodeficiency Virus
D. Human Immunodeficiency Virus
E. None

A

D.
Human Immunodeficiency Virus

57
Q

Which of the following is the direct ancestor of Homo Sapiens?

A. Homo erectus
B. Homo-sapiens Neanderthals
C. Ramapitthecus
D. Australopithecus
E. Pithecanthropus

A

A.
Homo erectus

58
Q

Which statment is correct regarding the evolution of mankind?

A. Australopitthecus was living in Australia
B. Neanderthal man and Cro-Magnon man were living at the same time
C. Homo erectus is preceded by Homohabilis
D. Both A and B
E. None

A

B.
Neanderthal man and Cro-Magnon man were living at the same time

59
Q

Common origin of man and chimpanzee is best shown by?

A. Dental formula
B. Cranial capacity
C. Chromosome number in binding
D. Binocular vision
E. None

A

B.
Cranial capacity

60
Q

The link between Homo erectus and Australopithecus is?

A. Dryopithicus
B. Ramapithecus
C. Homo habilis
D. Homo-sapiens
E. Zinjanthropus

A

C.
Homo habilis

61
Q

Descent of man and selection in relation to man is the work of?

A. Darwin
B. Lamarck
C. Linnaeus
D. Mendel
E. Elvis

A

A.
Darwin

62
Q

On F1 heterozygous red flower plants, the R, generation has both red and white flowered plants; it proves….?
A. Blended Inheritance
B. Law of independent assortment
C. Law of segregation
D. Law of dominance
E. Pollination

A

C.
Law of segregation

63
Q

The science that deals with the study of resemblances and differences between the parents and their progeny is called?
A. Genetics
B. Biology
C. Heredity
D. Variation
E. Biochemistry

A

A.
Genetics

64
Q

The cross pf F1 individuals w/ homozygous parent is called?

A. Test cross
B. Back cross
C. Reciprocal cross
D. Double cross
E. None

A

A.
Test cross

65
Q

Sickle cell anemic persons die normally due to?

A. Lethal genes
B. Inhibitory genes
C. Pleiotropic genes
D. Both A / C
E. Both A / B

A

E.
Both A / B

Lethal genes and Inhibitory genes

66
Q

If drooping ear is dominant over straight ear the percentage of drooping ear off-spring would be? (when both parents have straight ear)
A. 50%
B. 100%
C. 75%
D. 0%
E. 25%

A

D.
0%

67
Q

In a cross Tt x Tt, the % of the offspring produced having same phenotype as parents would be?
A. 50%
B. 100%
C. 25%
D. 75%
E. 0%

A

A.
50%

68
Q

The condition in which the allelmorphic genes are expressed partially when present together in the hybrid is called?
A. Pleiotropy
B. Incomplete dominance
C. Quantative inheritance
D. Epistasis
E. None

A

B.
Incomplete dominance

69
Q

A tall and dwarf plant are crossed together, the ration of a pure tall and pure dwarf in F2 generation will be?
A. 2:1
B. 3:1
C. 9:3
D. 4:1
E. 1:1

A

E.
1:1

70
Q

The gene in homozygous condition results in production of non-viable progent is called?
A. Lethal gene
B. Epi state gene
C. Complementary gene
D. Inhibiroty gene
E. Pleiotropic gene

A

A.
Lethal Gene

71
Q

The condition of having only one allele of a pair in a cross or Individual is called?
A. Incomplete dominace
B. Homozygous
C. complementary inheritance
D. Complete inheritance
E. Hemizygous

A

E.
Hemizygous

72
Q

The interphase nucleus has?

A. A porous single membrane
B. A porous double membrane
C. A non-porous single membrane
D. A non-porous double membrane
E. No membrane

A

B.
A porous double membrane

73
Q

Photosynthetic units are?

A. Oxysome
B. Peroxysome
C. Dictyosome
D. Quantasome
E. Neosome

A

D.
Quantasome

74
Q

Obiquinone is?

A. Metabolic of Kerbs cycle
B. Electron carrier
C. Anti-malarial drug
D. Antibiotic
E. Intermediary product of glycolysis

A

E.
Intermediary product of glycolysis

75
Q

Cancer cells live a paracitic life and drain off much energy from the host organism because ATP available per lactate to glucose conversion is deficient
by?
A. 2 ATP molecules
B. 4 ATP molecules
C. 6 ATP molecules
D. 30 ATP molecules
E. 5 ATP molecules

A

D.
30 ATP molecules

76
Q

The idea that cells comes from pre-existing cells was proposed by?

A. Leeuwenhock
B. Virchow
C. Robert Hooke
D. Louis Pasteur
E. Thomas Crook

A

D.
Louis Pasteur

77
Q

Acid rain does NOT fall to the earth in what form?

A. Fog
B. Rain
C. Snow
D. Sleet
E. None

A

E.
None

Acid rain can occur in fog, rain and snow

78
Q

Cell-plate in plant cell is formed of?

A. Pectin
B. Phargmosome
C. Lecithin
D. Suberin
E. Pencilin

A

B.
Phargmosome

79
Q

Endomistosis results in?

A. Haploidy
B. Diploidy
C. Aneuploidy
D. Euploidy
E. None

A

C.
Aneuploidy

80
Q

What type of cells does Human Immunodeficiency Virus (HIV) attack?

A. Helper T cells
B. Cytotoxic T cells
C. Memory B cells
D. Memory T cells
E. None

A

A.
Helper T cells

Helper T cells are important because they signal the B cells to make antigens, and activate the cytotoxic T cells.

81
Q

What planet in our solar system is the most like Earth?

A. Jupiter
B. Venus
C. Neptune
D. Mars
E. Saturn

A

D.
Mars

82
Q

Who has expressed origin of cells as “Omnis Cellula-e-cellula”?

A. Aristotle
B. Schleiden
C. Schwann
D. Virchow
E. Clapton

A

D.
Virchow

83
Q

Endoplasmic reticulum was discovered by?

A. Porter
B. De Vires
C. Sutton
D. Watson
E. Louis

A

A.
Porter

84
Q

Golgi bodies are maximum in?

A. Root cap
B. Root tip
C. Calyptrogen
D. Cutin
E. None

A

C.
Calyptrogen

85
Q

Cytochromes contain?

A. Magnesium
B. Manganese
C. Copper
D. Cobalt
E. Iron

A

E.
Iron

86
Q

Meiosis is significant because?

A. There is doubling of DNA content
B. It restores original number of chromosomes
C. Its produces identical cells
D. It produces RBC
E. None

A

B.
It restores original number of chromosome

87
Q

What is the specific name for large, open grassland in south Africa?

A. Steppe
B. Taiga
C. Plain
D. Veldt
E. Plateau

A

D.
Veldt

Veldts are very similar to steppes, but the term is specific to the grasslands in southern Africa

88
Q

The pyrenoids are made up of?

A. Core of nucleic acid surrounded by protein sheath
B. Core of protein surrounded by fatty sheath
C. Proteinaceous center and starchy sheath
D. Core of starch surrounded by sheath of protein
E. None

A

C.
Proteinaceous center and starchy sheath

89
Q

The first time, the bacteria were observed by?

A. Tobert Kpch
B. W.H. Stanley
C. Louis pasteur
D. A.V. Leeuwenhook
E. Aristotle

A

D.
A.V. Leeuwenhook

90
Q

Which one is a sex-linked inheritance?

A. Anemia
B. Night blindness
C. Colorblindness
D. Meningitis
E. None

A

C.
Colorblindness

91
Q

The function of contractile vacuole in protozoa is?

A. Reproduction
B. Locomotion
C. Osmoregulation
D. Digestion of food
E. Sperm production

A

C.
Osmoregulation

92
Q

Which planet in our solar system has the most mass?

A. Jupiter
B. Saturn
C. Earth
D. Venus
E. Neptune

A

A.
Jupiter

93
Q

The desmosomes are concerned with?

A. Cell division
B. Cytolysis
C. Celluar exceretion
D. Cellulose excretion
E. Cell adherence

A

E.
Cell adherence

94
Q

Size of the cell is governed by?

A. Cell volume and cell surface area ratio
B. Nucleus and cytoplasm ratio
C. Rate of celluar metabolism
D. All above
E. None

A

A.
Cell volume and cell surface area ratio

95
Q

A polysaccharide which is synthesized and stored in liver cells is?

A. Arabinose
B. Lactose
C. Galatose
D. Glycogen
E. Cellulose

A

D.
Glycogen

96
Q
A

Natural Science (1 decks)

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