Biology Semester1 Exam

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Question 1 of 130

Which of the following do not occur during interphase

Select one of the following:

Replication
Translation
Cytokinesis
An increase in the number of mitochondria

Explanation

Question 2 of 130

What is the difference between galactose and lactose

Select one of the following:

Lactose is a disaccharide and galactose is a monosaccharide
Lactose is the product of anaerobic respiration in humans and galactose is the product of anaerobic respiration in yeast
Lactose is an enzyme and galactose is a hormone
Galactose is a sugar found in milk but lactose is not found in milk

Explanation

Question 3 of 130

In a cell what is the effect of a large surface to volume ratio?

Select one of the following:

Slower rate of exchange of waste materials
Faster heat loss
Faster rate of mitosis
Slower intake of food

Explanation

Question 4 of 130

How can cells in a multicellular organism differentiate?

Select one of the following:

They express some of their genes but not others
They all have different genetic composition
Different cells contain a different set of chromosomes
Different cells do not have some chromosomes

Explanation

Question 5 of 130

What happens during the G2 stage of interphase

Select one of the following:

Homologous chromosomes pair
Synthesis of protiens
Homologous chromosomes separate
DNA replicates

Explanation

Question 6 of 130

Resolution is the ability to see two objects

Select one of the following:

As separate objects
As one object
In more detail
In less detail

Explanation

Question 7 of 130

The diameter of the drawing is 100mm. The actual image is 100um. What is the magnification of the drawing?

Select one of the following:

0.001
100
400
1000

Explanation

Question 8 of 130

What is the difference between plant and animal cells?

Select one of the following:

Animal cells burst when they take in excess water by osmosis whereas plant cells do not.
Plant cells store cellulose whereas animal cells store starch
Animal cells have ribosomes whereas plant cells do not
Plant cells have a cell wall where as animal cells have a cell membrane

Explanation

Question 9 of 130

How do prokaryotic cells divide?

Select one of the following:

By mitosis
By meiosis
By budding
By binary fission

Explanation

Question 10 of 130

What advantages does electron microscopy have over light microscopy?

Select one of the following:

Excellent resolution throughout magnification range
Biological material is easy to prepare and stain
Movement of living cells can be seen

Explanation

Question 11 of 130

What is the only membranous structure inside a prokaryotic cell?

Select one of the following:

Mesosome
Ribosome
Mitochondrion
RER

Explanation

Question 12 of 130

What are organelles?

Select one of the following:

Small structures in the cytoplasm of a cell that have more than one function
Membrane bound structures found near the nucleus of all cells
Discrete structures found inside all cells that have specific functions
Specialised cells inside an organ that have one function

Explanation

Question 13 of 130

Which organelles have a transport function?

Select one of the following:

Ribosome and Golgi apparatus
Golgi apparatus and ER
Mitochondrion and ER
Mitochondrion and ribosome

Explanation

Question 14 of 130

Which functions of life are carried out by unicellular organisms?

Select one of the following:

Nutrition but not reproduction
Nutrition and reproduction, but not excretion
Nutrition, reproduction and excretion but not transmission of nerve impulses
Nutrition, reproduction, excretion and transmission of nerve impulses

Explanation

Question 15 of 130

Which of the following characterises tissues?

Select one of the following:

A group of cells that develop independantly
A group of organs that have the same function
A group of cells that have the same function
A group of organs that have the same structure

Explanation

Question 16 of 130

Which of the following explains how brain cells develop to carry out their functions?

Select one of the following:

The cells have interacted to become brain cells
The cells have evolved that way
Some genes are expressed while others are not
All genes are expressed in the brain

Explanation

Question 17 of 130

Click on each orange point and write the correct answer.

Label

Explanation

Question 18 of 130

Click on each orange point and write the correct answer.

Label

Explanation

Question 19 of 130

Homeostasis is maintaining the conditions inside a cells within tolerable limits

Select one of the following:

True
False

Explanation

Question 20 of 130

Click on each orange point and write the correct answer.

Label

Explanation

Question 21 of 130

Click on each orange point and write the correct answer.

Label

Explanation

Question 22 of 130

Click on each orange point and write the correct answer.

Label

Explanation

Question 23 of 130

In active transport molecules pass through the following part of the cell membrane

Select one of the following:

Protein Channels
Phospholipid bilayer
Phosphate heads
Cholesterol tails

Explanation

Question 24 of 130

In the structure of the cell membrane, glycoproteins are

Select one of the following:

Carbohydrate chains attached to membrane proteins
Protein tails attached to phospholipids
Carbohydrate tails attached to phospholipids
Protein channels attached to cholestrol

Explanation

Question 25 of 130

Active transport is controlled by

Select one of the following:

The concentration gradient
Nature of transport substances
Amount of water
Amount of solute

Explanation

Question 26 of 130

In endocytosis vesicles formed around the engulfed particles are formed by

Select one of the following:

ER
Nuclear envelope
Lysosomes
Cell Membrane

Explanation

Question 27 of 130

Cells engaged in active transport have a high number of

Select one of the following:

Golgi Apparatus
Mitochondia
Lysosomes
Ribosomes

Explanation

Question 28 of 130

Pinocytic vesicles can be found in

Select one of the following:

Wheat cells
Potato cells
Liver cells
Bacteria

Explanation

Question 29 of 130

The thyroid gland can concentrate iodine to a level higher than that of the blood, this is an example of

Select one of the following:

Diffusion
Osmosis
Active Transport
Pinocytosis

Explanation

Question 30 of 130

In osmosis, water molecules can pass through selectively permeable membrane but not the solute because they are different in

Select one of the following:

Size
Kinetic energy
Speed
Concentration

Explanation

Question 31 of 130

If pieces of potato are placed in a hypotonic solution, they will

Select one of the following:

Shrink
Increase in Weight
Decrease in Weight
Stay the same

Explanation

Question 32 of 130

Click on each orange point and write the correct answer.

Label

Explanation

Question 33 of 130

Gaseous exchange occurs by

Select one of the following:

Osmosis
Diffusion
Active Transport
Pinocytosis

Explanation

Question 34 of 130

Click on each orange point and write the correct answer.

Label cell cycle

Explanation

Question 35 of 130

Click on each orange point and write the correct answer.

Label

Explanation

Question 36 of 130

The longest phase of the cell cycle

Select one of the following:

Prophase
Interphase
Metaphase
Mitosis

Explanation

Question 37 of 130

Fill the blank spaces to complete the text.

In interphase the cell , the replicates, and the organelles . This is the phase of the cell cycle. Then the cell goes to where the chromosomes and the dissipates. The start to form and centrioles start to move to of the cell. Then it moves to where the membranes disintegrates and the spindle fibres to the chromosomes and line up in a straight line in the of the cell. Then the spindle fibres and the pull apart. The the chromosomes dissipate and fibres dissolve. Then cytokinesis which is a process that is in both plant and animal cells.

Explanation

Question 38 of 130

Click on each orange point and write the correct answer.

Label the phases

Explanation

Question 39 of 130

Fill the blank spaces to complete the text.

Mitotic Index= /

Explanation

Question 40 of 130

Which process removes waste material of metabolism from the body?

Select one of the following:

Excretion
Nutrition
Reproduction
Respiration

Explanation

Question 41 of 130

What is a mutation?

Select one of the following:

a change in a gene or chromosome
a condition cause by a recessive allele
a process used in genetic engerneering
a type of discontinuous variation

Explanation

Question 42 of 130

Which structure is only found in plant cells?

Select one of the following:

cell membrane
chloroplasts
cytoplasm
nucleus

Explanation

Question 43 of 130

Which process involves the release of energy from food substances in all living organisms?

Select one of the following:

Breathing
Nutrition
Respiration
Transpiration

Explanation

Question 44 of 130

What is a cytoplasm?

Select one of the following:

a fluid filled sac
a jelly like substance
a surrounding wall
a tiny green disc

Explanation

Question 45 of 130

What is an example of osmosis?

Select one of the following:

Carbon dioxide goes out through the stomata of a leaf
Digested food is absorbed from the small interstine
Oxygen goes into the blood from an alveolus
Water enters a plant root from the cell

Explanation

Question 46 of 130

What is an example of homeostasis?

Select one of the following:

Breathing oxygen
Regulation blood in glucose
Removing undigested food through the anus
Urinating to empty the bladder

Explanation

Question 47 of 130

Which organisms carry out respiration, growth, movement and excretion?

Select one of the following:

All animal and plants
Animals only
Arthropods and flowering plants only
Plants only

Explanation

Question 48 of 130

Osmosis is defined as the diffusion of water molecules

Select one of the following:

Down a concentration gradient through a partially permeable membrane
Down their concentration gradient through a permeable membrane
Up their concentration gradient through a partially permeable membrane
Up their concentration gradient through a permeable membrane

Explanation

Question 49 of 130

What is an Organ?

Select one of the following:

Group of tissues that have combined to form a single structure
Group of cells that develop in the same with the same structure and function
Discreet structure found inside a cell
Group of organs within an organism, that together carry out a process

Explanation

Question 50 of 130

Fill the blank spaces to complete the text.

The tells us that all organisms are made up of cells which are the units of life and comes from cells.

Explanation

Question 51 of 130

What is a cell?

Select one of the following:

A cytoplasm enclosed in a plasma membrane
A cytoplasm enclosed in a cell wall
A nucleus enclosed in a cell membrane
A nucleus enclosed in a cell wall

Explanation

Question 52 of 130

Fill the blank spaces to complete the text.

Magnification= /

Explanation

Question 53 of 130

Fill the blank spaces to complete the text.

A cell wall is made out of and it surrounds the . It gives the cell its shape and prevents from the cell.

Explanation

Question 54 of 130

Fill the blank spaces to complete the text.

surrounds the cell and what enters and leaves the cell.

Explanation

Question 55 of 130

Fill the blank spaces to complete the text.

is an reproductive process in cells in which the cells grow larger and eventually the two chromosomes separate and move to opposite ends of the cell. The partition forms between chromosomes.

Explanation

Question 56 of 130

The organelle that provides temporary storage of foods, enzymes and waste products is what?

Select one of the following:

Mitochondria
Vacuole
Chloroplast
Golgi apparatus

Explanation

Question 57 of 130

Cell wall, centrioles, lysosome, plastids are all organelles found in plant cells.

Select one of the following:

True
False

Explanation

Question 58 of 130

Which of the following are true for Eukaryote cells?

Select one or more of the following:

A naked loop of DNA
Double nucleur membrane called the nucleur envelope
80s Ribosomes
Mitochondria

Explanation

Question 59 of 130

Which of the following are true for Prokaryotic cells?

Select one or more of the following:

Naked loop of DNA
80s Ribosomes
Mitochondria
Internal membranes

Explanation

Question 60 of 130

What are sister chromatids?

Select one of the following:

Two separate identical chromosomes
Two related chromosomes
Two identical halves of a chromosome tied together
None of these

Explanation

Question 61 of 130

Which type of cell does a cell plate form during cytokinesis?

Select one of the following:

Animal cell
Plant cell
Protist cell
Bacterial cell

Explanation

Question 62 of 130

Sister chromatids are joined together by which of the following?

Select one of the following:

Centrosome
Centromere
Spindle
Kinetochore

Explanation

Question 63 of 130

Which of the following do animal cells have that plant cells do not have?

Select one of the following:

Spindle fibers
Poles
Microtubules
Centrioles

Explanation

Question 64 of 130

Fill the blank space to complete the text.

Diploids are of chromosomes.

Explanation

Question 65 of 130

Which of the following is a function of cellulose in plants?

Select one of the following:

Storage of fate
Formation of mitochondria
Storage of energy
Formation of cell walls

Explanation

Question 66 of 130

What is the difference between a cell the G1 phase and a cell in a G2 phase of a cell cycle?

Select one of the following:

A cell in the G2 phase would be smaller that a cell in the G2 phase
A cell in G2 phase would have more mitochondria than a cell in G2 phase
A cell in the G1 phase would have more DNA in its chromosomes than a cell in the G2 phase
DNA replication occurs in the G1 phase but not the G2 phase

Explanation

Question 67 of 130

Water rises in capillaries due to

Select one of the following:

Adhesion only
Cohesion only
Adhesion and Cohesion
Evaporation

Explanation

Question 68 of 130

Insects can walk on the surface of water due to

Select one of the following:

Adhesion
Cohesion
Adhesion and cohesion
Evaporation

Explanation

Question 69 of 130

Ice floats on the surface of water because of

Select one of the following:

Expansion
Contraction
Evaporation
Surface Tension

Explanation

Question 70 of 130

Water molecules are attached together by

Select one of the following:

Condensation
Hydrolysis
Hydrogen bonds
Covelent bonds

Explanation

Question 71 of 130

In evaporation of water

Select one of the following:

Hydrogen bonds are broken
Hydrogen bonds are formed
Covalent bonds are broken
Covalent bonds are formed

Explanation

Question 72 of 130

In a solid state a water molecule is attached to the following number of other water molecules

Select one of the following:

Explanation

Question 73 of 130

Water resists increase in temperature because the gained heat is spent in

Select one of the following:

Breaking hydrogen bonds
Forming hydrogen bonds
Breaking covalent bonds
Forming covalent bonds

Explanation

Question 74 of 130

Water is a polar molecule with

Select one of the following:

Two positively charged corners and two negatively charged corners
Two positively charged corners and one negatively charged corners
One positively charged corners and two negatively charged corners
One positively charged corners and one negatively charged corners

Explanation

Question 75 of 130

A polysaccharide made of glucose molecules has the following formula

Select one of the following:

C5H10O5
5CH12O6
C30H60O30
D30H52O26

Explanation

Question 76 of 130

A polysaccharide with 20 glucose units has the following number of glycosidic bonds

Select one of the following:

Explanation

Question 77 of 130

Digestion involves

Select one of the following:

Condensation
Hydrolisis
Polymerization
Dehydration synthesis

Explanation

Question 78 of 130

Glucose functions is

Select one of the following:

Cellulose
Lignin
Starch
Glycogen

Explanation

Question 79 of 130

How many amino acids does a polypeptide with 6 peptide bonds have

Select one of the following:

Explanation

Question 80 of 130

A fat molecule is made of

Select one of the following:

Carbon, hydrogen and oxygen
3 fatty acids and glycerin
One sugar and 3 fatty acids
More than one gycerol

Explanation

Question 81 of 130

Click on the orange point and write the correct answer.

Identify this molecule

Explanation

Question 82 of 130

Click on each orange point and write the correct answer.

Identify compound and label parts

Explanation

Question 83 of 130

Click on the orange point and write the correct answer.

Identify

Explanation

Question 84 of 130

Click on the orange point and write the correct answer.

Identify

Explanation

Question 85 of 130

Click on the orange point and write the correct answer.

Identify

Explanation

Question 86 of 130

A skeletal muscle is a exception to the cell theory because it is multinucleate (contains hundreds of nuclei)

Select one of the following:

True
False

Explanation

Question 87 of 130

Giant algae is an exception to the cell theory as it has many cells and they contain many nucleus.

Select one of the following:

True
False

Explanation

Question 88 of 130

A unicellular organism consists of many cells and can carry out all the functions of life.

Select one of the following:

True
False

Explanation

Question 89 of 130

Select from the dropdown list to complete the text.

As a cell grows larger its surface area to volume ratio becomes ( smaller, larger, wider, shorter ).

Explanation

Question 90 of 130

Different groups of cells become specialised for different functions by the process of differentiation in unicellular organisms.

Select one of the following:

True
False

Explanation

Question 91 of 130

Select from the dropdown list to complete the text.

The whole is greater than the sum of its parts: ( emergent properties, differentiation )

Explanation

Question 92 of 130

Stem cells have the ability to divide and differentiate along different pathways.

Select one of the following:

True
False

Explanation

Question 93 of 130

Human embryos consist entirely of stem cells in their early stages.

Select one of the following:

True
False

Explanation

Question 94 of 130

In favour of therapeutic use of stem cells is:

Select one or more of the following:

Health and quality of life of patients suffering from an otherwise incurable disease may be greatly improved.
Human life even at early stages.
Lack nervous systems so do not feel pain or suffer.
Depends on the source and stage of the embryo.

Explanation

Question 95 of 130

Select from the dropdown list to complete the text.

The ( shorter, longer ) the wave length the higher the resolution.

Explanation

Question 96 of 130

The chloroplast carries out photosynthesis.

Select one of the following:

True
False

Explanation

Question 97 of 130

The plasma membrane prevent the cell bursting/shrinking during osmosis.

Select one of the following:

True
False

Explanation

Question 98 of 130

The cell wall controls entry and exit of substances.

Select one of the following:

True
False

Explanation

Question 99 of 130

The following are compartmentalised (membrane-bound) organelles:

Select one or more of the following:

Nucleus
Plasmid
Ribosomes
Mitochondria
Chloroplasts

Explanation

Question 100 of 130

The rate at which materials enter or leave a cell depends on the surface of the cells. However, the rate at which materials are used or produced depends on the volume.

Select one of the following:

True
False

Explanation

Question 101 of 130

Select from the dropdown list to complete the text.

( Binary fission, Mitosis, Meiosis, Cell Division ) is the splitting of two cells and the DNA is replicated identically.

Explanation

Question 102 of 130

A prokaryotic cell has 80s ribosomes.

Select one of the following:

True
False

Explanation

Question 103 of 130

There are 7 functions of membrane proteins.

Select one of the following:

True
False

Explanation

Question 104 of 130

Diffusion is the passive movement of particles from a region of lower concentration to a region of higher concentration, as a result of random motion of particles.

Select one of the following:

True
False

Explanation

Question 105 of 130

Select from the dropdown lists to complete the text.

Diffusion is the passive movement of particles from a region of ( lower, higher ) concentration to a region of ( higher, lower ) concentration, as a result of random motion of particles.

Explanation

Question 106 of 130

Which are passive?

Select one or more of the following:

Simple Diffusion
Facilitated Diffusion
Osmosis
Active Transport

Explanation

Question 107 of 130

The osmolarity of a solution is the number of moles of solute particles per unit of solution.

Select one of the following:

True
False

Explanation

Question 108 of 130

Select from the dropdown list to complete the text.

The greater the concentration of solutes the ( higher, lower ) the osmolarity.

Explanation

Question 109 of 130

Fill the blank space to complete the text.

% change= {}/ initial mass x 100

Explanation

Question 110 of 130

Active transport is the movement of substances across membranes, against the concentration gradient, using ATP.

Select one of the following:

True
False

Explanation

Question 111 of 130

Select from the dropdown lists to complete the text.

Osmosis is the passive movement of ( water, solute ) molecules from an area of ( low, high ) solute concentration to an area of ( high, low ) solute concentration across a partially permeable membrane until equilibrium is reached.

Explanation

Question 112 of 130

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( Exocytosis, Endocytosis ) is the process in which the vesicles fuse with the plasma membrane and the contents of the vesicles are expelled into the cell and the membrane flattens out again.

Explanation

Question 113 of 130

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( Endocytosis, Exocytosis ) is the when the part of the plasma membrane can be pinched off to create a vesicle containing some material from outside the cell.

Explanation

Question 114 of 130

Symbiosis is two different organisms living together.

Select one of the following:

True
False

Explanation

Question 115 of 130

Fill the blank space to complete the text.

A group of proteins is called a and is used to ensure that tasks are performed at the correct time and that the cell moves on to the next stage of the cycle when its appropriate.

Explanation

Question 116 of 130

Cyclins control the cell cycle and ensure that cells divide when new cells are needed, but not at other times.

Select one of the following:

True
False

Explanation

Question 117 of 130

Oncogenesis is the formation of tumors.

Select one of the following:

True
False

Explanation

Question 118 of 130

Fill the blank space to complete the text.

The spreading of cells to form tumors in a different part of the body is known as .

Explanation

Question 119 of 130

Fill the blank space to complete the text.

There is a correlation between cigarette smoking and the death rate due to cancer.

Explanation

Question 120 of 130

Fill the blank space to complete the text.

Tobacco smoke are mutagenic and therefore .

Explanation

Question 121 of 130

For what purpose is the enzyme lactase useful?

Select one of the following:

Production of lactose-free milk so that more people can consume dairy products.
As a dietary supplement to aid in protein digestion of milk.
For use in coagulation milk proteins to make cheese.
To improve protein consumption in developing countries that lack milk.

Explanation

Question 122 of 130

In a cell, what is the effect of a large surface area to volume ratio?

Select one of the following:

Slower rate of exchange of waste material.
Faster heat loss.
Faster rate of mitosis.
Slower intake of food

Explanation

Question 123 of 130

Click on the orange point and select the correct answer.

Label

Explanation

Question 124 of 130

Which organelles have a transport function?

Select one of the following:

Ribosome and Golgi apparatus
Golgi apparatus and endoplasmic reticulum
Mitochondrion and endoplasmic reticulum
Mitochondrion and ribosome

Explanation

Question 125 of 130

What is the difference between galactose and lactose?

Select one of the following:

Lactose is a disaccharide and galactose is a monosaccharide.
Lactose is the product of anaerobic respiration in humans and galactose is the product of anaerobic respiration in yeast.
Lactose is an enzyme and galactose is a hormone.
Galactose is a sugar found in milk but lactose is not found in milk

Explanation

Question 126 of 130

In an electron micrograph, a DNA molecule appears 1 mm wide. The magnification of the micrograph is 500,000. What is the width of the DNA molecule.

Select one of the following:

0.5 nm
2 nm
0.5 micro m
2 micro m

Explanation

Question 127 of 130

What is a function of the bacterial cell wall?

Select one of the following:

Absorption of glucose by active transport.
Exchange of plasmids between cells.
Increasing the surface area for oxygen diffusion.
Preventing internal pressures from bursting the cell.

Explanation

Question 128 of 130

Why do multicellular organisms have emergent properties?

Select one of the following:

They have more genes than unicellular organisms.
Properties of unicellular organisms are enhanced by having many cells.
All of their genes are expressed whereas unicellular organisms express only some.
They show properties that can only result from the interaction of many cells.

Explanation

Question 129 of 130

How much energy is stored in 1kg of body fat compared to 1kg of glycogen?

Select one of the following:

Half as much.
Same amount
Twice as much
One tenth as much

Explanation

Question 130 of 130

What is the size range for the diameters of most plant and animal cells?

Select one of the following:

100nm to 1 micro m
1 micro m to 10 micro m
10 micro m to 100 micro m
100 micro m to 1 mm

Explanation

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	Created by Isha Raja over 8 years ago

Topics 1.1-2.4

Biology Semester1 Exam

Question 1 of 130

Which of the following do not occur during interphase

Select one of the following:

Explanation

Question 2 of 130

What is the difference between galactose and lactose

Select one of the following:

Explanation

Question 3 of 130

In a cell what is the effect of a large surface to volume ratio?

Select one of the following:

Explanation

Question 4 of 130

How can cells in a multicellular organism differentiate?

Select one of the following:

Explanation

Question 5 of 130

What happens during the G2 stage of interphase

Select one of the following:

Explanation

Question 6 of 130

Resolution is the ability to see two objects

Select one of the following:

Explanation

Question 7 of 130

The diameter of the drawing is 100mm. The actual image is 100um. What is the magnification of the drawing?

Select one of the following:

Explanation

Question 8 of 130

What is the difference between plant and animal cells?

Select one of the following:

Explanation

Question 9 of 130

How do prokaryotic cells divide?

Select one of the following:

Explanation

Question 10 of 130

What advantages does electron microscopy have over light microscopy?

Select one of the following:

Explanation

Question 11 of 130

What is the only membranous structure inside a prokaryotic cell?

Select one of the following:

Explanation

Question 12 of 130

What are organelles?

Select one of the following:

Explanation

Question 13 of 130

Which organelles have a transport function?

Select one of the following:

Explanation

Question 14 of 130

Which functions of life are carried out by unicellular organisms?

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Question 15 of 130

Which of the following characterises tissues?

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Question 16 of 130

Which of the following explains how brain cells develop to carry out their functions?

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Question 17 of 130

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Question 18 of 130

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Question 19 of 130

Homeostasis is maintaining the conditions inside a cells within tolerable limits

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Question 20 of 130

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