The position of an organism in a food chain of an ecosystem called:

NUMS Mock 2
Biology
Man and His Environment

Which one of the following is different from all the rest regarding the number of cells inits body?

The chemical nature of an antibody is:

NUMS 2016
Biology
Transport
Elimination Tool:

Who developed a theory of natural selection essentially identical to Darwin’s?

PMC Sample 2
Biology
Evolution
Elimination Tool:

Germ theory was presented by:

NUMS 2016
Biology
Kingdom Prokaryote
Elimination Tool:

According to the theory of natural selection, organisms produce:

UHS 2019
Biology
Evolution
Elimination Tool:

It is a method for rapid production of a very large number of copies of a particular fragment of DNA:

PMC 2020
Biology
Biotechnology
Elimination Tool:

Ahmed’s blood CANNOT clot properly; he was diagnosed with hemophilia A. He passed this trait to his grandson through his:

NUMS 2019 Reconduct
Biology
Variation and Genetics
Elimination Tool:

Which one of the following forms the blk of exoskeleton of an arthropod?

In Maxam – Gilbert method, DNA threads are:

NUMS 2015
Biology
Chromosomes and DNA
Elimination Tool:

Which of these cycles operate in human females?

PMC Sample 2
Biology
Reproduction
Elimination Tool:

The optimum pH of catalase is:

NUMS 2018
Biology
Enzymes
Elimination Tool:

Normal action potential of a neuronal cell is :

Mating with non-relatives is known as?

PMC Sample 2
Biology
Evolution
Elimination Tool:

Hemoglobin can absorb maximum oxygen at sea level, which is _____ ml/100 ml of blood.

NUMS 2019 Cancelled
Biology
Gaseous Exchange
Elimination Tool:

Wood is not formed in:

NUMS 2015
Biology
Growth and Development
Elimination Tool:

Translocation of organic solutes in plants takes place through:

NUMS 2020
Biology
Nutrition
Elimination Tool:

Chlorophyll is insoluble in:

In an isotonic solution there would be:

NTS 2016 SMBBMC
Biology
Biological Molecules
Elimination Tool:

Pituitary gland releases ______ hormone and _______ hormone while ovaries produce _______ and progesterone.

NTS 2019
Biology
Reproduction
Elimination Tool:

They serve as a scaffold for formation of higher order chromatin structure:

NUMS Mock 2
Biology
Cell Structure and Function

Which one of the following muscles are considered as “Voluntary muscles”?

PMC 2020
Biology
Support and Movement
Elimination Tool:

Four events in the transmission of nerve impulses across synapses are:

I. depolarisation of the presynaptic membrane

II. propagation of postsynaptic action potential

III. reabsorption of the transmitter substance

IV. release of transmitter substance into the synaptic cleft

In which sequence do these events occur?

FIRST -> LAST

NTS 2014
Biology
Coordination and Control
Elimination Tool:

Lecithin is formed by combining phosphatidic acid with ______:

NUMS 2020
Biology
Biological Molecules
Elimination Tool:

What is the role of cholesterol in the cell membrane?

NUMS 2020
Biology
Cell Structure and Function
Elimination Tool:

In meiosis II, ______ differentiate into sperms.

NUMS 2019 Reconduct
Biology
Cell Cycle
Elimination Tool:

DNA is synthesized and chromosome number is doubled in

Leukaemia is associated with an increased number of _____ in blood.

NTS 2016 DUHS & JSMU
Biology
Growth and Development
Elimination Tool:

The effect of competitive inhibitor on enzyme activity is such that it affects which of the following?

PMC Sample 2
Biology
Enzymes
Elimination Tool:

Which of the following nutrients is incorrectly paired with its function in a plant?

NUMS Mock 3
Biology
Nutrition

The inhibitor which closely resembles the substrate in its molecular structure and inhibits the enzyme activity by binding to the active site of the enzyme is called:

NTS 2013
Biology
Enzymes
Elimination Tool:

Male and female sea urchins release their sperm and eggs into the water where fertilization takes place. How can their reproduction be described?

NUMS Mock 3
Biology
Reproduction

When both the alleles of a gene pair are same, the organism is said to be:

PMC 2020
Biology
Variation and Genetics
Elimination Tool:

In which type of cells, cell wall is not present?

PMC 2020
Biology
Cell Structure and Function
Elimination Tool:

Lichen is a symbiotic mutualistic association of fungi with

Which one of the following organelles is required for aerobic respiration?

NTS 2018
Biology
Cell Structure and Function
Elimination Tool:

The length of okazaki fragments in eukayotes is

Ptyalin can convert starch into:

NUMS 2015
Biology
Biological Molecules
Elimination Tool:

An X to A ratio of ⅖ in drosophila produces:

NUMS 2020
Biology
Variation and Genetics
Elimination Tool:

During which stage of meiosis do centromeres divide?

NTS 2016 DUHS & JSMU
Biology
Cell Cycle
Elimination Tool:

Taq polymerase is extracted from a bacterium

A complex substance which on hydrolysis yields polyhydroxy aldehyde or ketone subunits is called:

Leptocardii is a group of:

NUMS 2015
Biology
Kingdom Animalia
Elimination Tool:

Cn(H2O)n. is a general formula of :

The position of an organism in a food chain of an ecosystem called:

NUMS 2018
Biology
Man and His Environment
Elimination Tool:

Genetic information in the DNA is encoded as:

NTS 2018
Biology
Chromosomes and DNA
Elimination Tool:

Which of the following statements concerning nucleolus is correct?

NTS 2014
Biology
Cell Cycle
Elimination Tool:

Which is incorrect?

Those organisms which can prepare their own food from simple inorganic material and can store energy are called

Encircle the miss – match:

NTS 2016 SMBBMC
Biology
Bio-diversity | Variety of Life
Elimination Tool:

The following statements are about enzymes:

1. They are globular proteins

2. They can be inhibited by competitive inhibitors

3. They are formed in the smooth endoplasmic reticulum

4. There are only found attached to Plasma membranes in the cell

Which statements are correct for all enzymes?

NUMS Mock 3
Biology
Enzymes

Lysosomes function in:

NTS 2011
Biology
Cell Structure and Function
Elimination Tool:

Which of the following enzymes is used to join DNA fragments?

NTS 2016 DUHS & JSMU
Biology
Chromosomes and DNA
Elimination Tool:

Which of the following is not related to apoptosis?

NUMS Mock 1
Biology
Growth and Development

In animals excess of nitrogen is excreted primarily in form of

The chromosomes with equal arms are called:

NTS 2018
Biology
Chromosomes and DNA
Elimination Tool:

First stable compound during Calvin cycle is:

PMC 2020
Biology
Bioenergetics
Elimination Tool:

Wood forests form the

Five steps of the lytic cycle of a T4 stage are given below:

The T4 phage uses its tails to stick to specific receptor
The cell’s metabolic machinery, directed by phage DNA, produces phage proteins and nucleotides from the cells degraded DNA are used to make copies of the phage genome.
The phage then directs production of an enzyme that digests the cell.
The empty capsid of the phage is left as a ghost outside the cell
The sheath of the tail contracts, thrusting a hollow core through the wall and membrane of the cell.
Which of the following is the correct sequence of the cycle?

NTS 2015 SMBBMC
Biology
Bio-diversity | Variety of Life
Elimination Tool:

Part of the amino acid sequences In normal and sickle cell hemoglobin are shown.

Normal haemoglobin

Thr – pro – glu – glu

Sickle cell haemoglobin

thr – pro – val – glu

mRNA codons for these amino acids are

Glutamine (glu) GAA GAG

Threonine (thr) ACU ACC

Proline (pro) CCU CCC

Valine (val) GUA GUG

Which transfer RNA molecule is Involved in the formation of this part of the sickle cell haemoglobin?

NTS 2016 DUHS & JSMU
Biology
Chromosomes and DNA
Elimination Tool:

Which of the following results from conjugation in paramecium?

PMC Practice 3
Biology
Kingdom Protista
Elimination Tool:

A genomic library is a collection of

What is the role of cholesterol in the cell membrane?

NUMS Mock 4
Biology
Cell Structure and Function

Vocal cords, which help in voice production are two thin edged fibrous bands, present in:

NUMS 2019 Cancelled
Biology
Gaseous Exchange
Elimination Tool:

Estimating relative CO2consumption or O2release during photosynthesis at different wavelengths of light, is termed as:

NUMS 2015
Biology
Bioenergetics
Elimination Tool:

What is in q2 Hardy Weinberg equilibrium?

NTS 2019
Biology
Evolution
Elimination Tool:

Right kidney is slightly lower than left kidney due to:

NUMS 2018
Biology
Homeostasis
Elimination Tool:

Which of the following basic structural level of proteins is indicated by an association of two alpha and two beta chains in the haemoglobin molecule?

NUMS Mock 2
Biology
Biological Molecules

The type of energy, reduced by the enzymes, for biological reactions to occur is called the:

UHS 2019
Biology
Enzymes
Elimination Tool:

According to the theory of natural selection, organisms produce:

NUMS Mock 2
Biology
Evolution

The leaf is bilobed with midrib between them. The plant is

The scientific name of thorn Apple is?

NUMS Mock 2
Biology
Kingdom Plantae

Movement of the material across the cell membrane which does not requiring expenditure of metabolic energy is called

A plant has a growth pattern called

Which of the following statement about Kingdom Protista is incorrect?

Haemoglobin carries more oxygen than plasma by:

NTS 2011
Biology
Gaseous Exchange
Elimination Tool:

Optimum temperature for enzymes of human body is:

NUMS 2018
Biology
Enzymes
Elimination Tool:

Booklungs serve the function of respiration in:

NTS 2014
Biology
Gaseous Exchange
Elimination Tool:

Gibberellins may be substituted for _____ light, therefore promote flowering in long day plants.

The genes which do not follow law of independent assortment

Deficiency of K+ causes:

Read the passage below to answer the question:

Hemophilia is a disorder in which blood fails to clot. Saad, a male hemophiliac, marries Sara, a normal woman and together they have four children, two boys (Ahmed and Ali) and two girls (Alia and Ayesha). None of the children display the symptoms of Hemophilia. Ahmed, Ali, Ayesha, and Ali all marry normal individuals and have children. None of Ahmeds or Ali’s children, male or female, display symptoms of hemophilia, but the sons of Alia and Ayesha display symptoms of hemophilia while the daughters of Alia and Ayesha do not.

Which of the following individuals are heterozygous for hemophilia:

NTS 2010
Biology
Variation and Genetics
Elimination Tool:

Trypanosoma is a human parasite causing

UHS 2010
Biology
Kingdom Protista
Elimination Tool:

The diploid human chromosome set has:

NTS 2016 SMBBMC
Biology
Chromosomes and DNA
Elimination Tool:

Which of the following statements is true about Savannah?

NTS 2015 DUHS and JSMU
Biology
Man and His Environment
Elimination Tool:

During inspiration, the space inside the chest cavity is increased due to:

UHS 2019
Biology
Gaseous Exchange
Elimination Tool:

The cell wall of Archaebacteria does not contain which of the following?

PMC Sample 1
Biology
Kingdom Prokaryote
Elimination Tool:

When the concentration of the external medium is equal to the concentration of the internal medium of a cell, the situation is called:

NUMS Mock 1
Biology
Biological Molecules

Glucose → 2 pyruvic acid + 2H2O

2ADP + 2Pi → 2 ATP

2NAD + 4H → 2NADH + 2H+

These three reactions collectively constitute ______.

NTS 2012
Biology
Bioenergetics
Elimination Tool: