Which step causes activation of catalytic site of an enzyme?

What will be the approximate length of a DNA strand having 500 nucleotides?

NUMS 2015
Biology
Chromosomes and DNA
Elimination Tool:

HIDE ELIMINATED OPTIONS

The human body maintains all of its cells’ internal concentration _____ to internal body fluid.

NUMS 2019 Cancelled
Biology
Homeostasis
Elimination Tool:

The following observations refer to evolution:

Inherited variations which are favored in a particular environment are passed on
There is a struggle for existence
Across time, inherited variations may accumulate causing gradual changes in the organism
Although populations tend to overproduce, they remain more or less constant in numbers from generation to generation
In what sequence should the statement be placed to support the Darwin theory of evolution?

NTS 2015 DUHS and JSMU
Biology
Evolution
Elimination Tool:

A substance which binds at the active site of the enzyme but does not result in the formation of the products is called:

The point at which there is no net exchange of gases between leaves and atmosphere is known as

Desert ecosystem of Mianwali is

Which of the following sets of bones does not included in the axial skeleton?

NUMS 2019 Cancelled
Biology
Support and Movement
Elimination Tool:

Reversible inhibitors form WEAK linkages with which of the following?

PMC Sample 3
Biology
Enzymes
Elimination Tool:

The thick filaments, in a myofibril of muscles, are made of ________.

NUMS Mock 3
Biology
Support and Movement

All of the following hormones are secreted from anterior lobe of pituitary gland BUT:

NUMS 2019 Reconduct
Biology
Coordination and Control
Elimination Tool:

Human embryo remains enclosed in:

PMC Practice 1
Biology
Growth and Development
Elimination Tool:

Bacteriophages, or phages are also known as:

PMC Sample 2
Biology
Bio-diversity | Variety of Life
Elimination Tool:

Which of the following processes does NOT need Pyruvic Acid as a substrate?

PMC 2020
Biology
Bioenergetics
Elimination Tool:

In Maxam – Gilbert method, DNA threads are:

NUMS 2015
Biology
Chromosomes and DNA
Elimination Tool:

If more substrate to already occurring enzymatic reaction is added and there is no effect on the rate of the reaction what is the form given to this situation:

______ alleles both have an effect on the phenotype of a heterozygous organism:

PMC 2020
Biology
Variation and Genetics
Elimination Tool:

Which of the following marine fishes are considered direct descendents of fresh water ancestors?

Which organism has wings with claws?

NUMS 2015
Biology
Kingdom Animalia
Elimination Tool:

Many _______ expel a large amount of water by special structures called contractile vacuoles:

NUMS 2020
Biology
Support and Movement
Elimination Tool:

Red algae do not contribute towards:

PMC 2020
Biology
Kingdom Plantae
Elimination Tool:

Muscles that are attached to bones and have voluntary movements are termed as ______ muscles.

NUMS 2019 Reconduct
Biology
Support and Movement
Elimination Tool:

Net yield of H2O in Photosynthesis is

Light reaction takes place on/in

Which of the following is correct in humans?

NUMS Mock 1
Biology
Reproduction

Many scientists believe that one of the following is evolutionary origin(s) of animals, plants and fungi?

NTS 2013
Biology
Evolution
Elimination Tool:

_______ is the most critical phase of mitosis.

NUMS 2015
Biology
Cell Cycle
Elimination Tool:

The feeding stage of slime mold is a

UHS 2010
Biology
Kingdom Protista
Elimination Tool:

Enzymes work by lowering the ______ of the reactions they catalyse:

NUMS Mock 4
Biology
Enzymes

•  A Vestigial
•  B. Analogous structures
•  C. Homologous structures
•  D. None of these

Eutrophication is

What was the source of hydrogen for first photosynthetic organisms?

Plants absorb it in the form of soluble phosphates. It is present abundantly in the growing and storage organs of plants. What is it?

NTS 2012
Biology
Nutrition
Elimination Tool:

Which component enters into mitochondria after glycolysis?

NUMS Mock 1
Biology
Bioenergetics

Anthocyanins are various types of colorful pigments present in the:

NUMS 2014
Biology
Cell Structure and Function
Elimination Tool:

In parthenocarpy which levels are high in ovaries

Which of the following has the ability to develop ester linkage with the OH group of Pentose sugar?

NUMS 2015
Biology
Biological Molecules
Elimination Tool:

Scapula is the bone of the:

NUMS 2014
Biology
Support and Movement
Elimination Tool:

Read the passage below to answer the question:

Haemophilia is a disorder in which blood fails to clot. Saad, a male haemophiliac, 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 Haemophilia.

Ahmed, Ali, Ayesha, and Ali all marry normal individuals and have children. None of Ahmed’s or Ali’s children, male or female, display symptoms of haemophilia, but the sons of Alia and Ayesha display symptoms of haemophilia while the daughters of Alia and Ayesha do not.

Which of the following best explains the reason that Ahmed, Ali, Ayesha and Alia do not display symptoms of haemophilia, even though their father, Saad, is a haemophiliac.

NTS 2010
Biology
Variation and Genetics
Elimination Tool:

Bile is used in:

NUMS 2016
Biology
Nutrition
Elimination Tool:

Genetic recombination in bacteria can occur through:

NUMS 2015
Biology
Kingdom Prokaryote
Elimination Tool:

A plant disease which is not caused by a fungus is:

NUMS 2015
Biology
Kingdom Fungi
Elimination Tool:

Following group is the example of acoelomates:

NUMS Mock 1
Biology
Kingdom Animalia

Adaptation of traits to better fill a niche is known as which of the following?

PMC Sample 3
Biology
Evolution
Elimination Tool:

Haemophilia occurs because of:

PMC 2020
Biology
Variation and Genetics
Elimination Tool:

The stored food in fungi is usually lipid droplets of:

NUMS 2017
Biology
Kingdom Fungi
Elimination Tool:

Natural extrachromosomal circular DNA molecules earrying genes for antibiotic resistance and fertility

Germ theory of disease has ______ postulates

Which of the following is NOT a difference that would allow one to distinguish between a prokaryotic and a eukaryotic cell?

Presence of absence of the nucleus
Presence or absence of the cell wall
Membrane bound versus no membrane bound organelles
NUMS Mock 3
Biology
Cell Structure and Function

The number of base pairs in a complete helical turn is/are:

NUMS 2020
Biology
Chromosomes and DNA
Elimination Tool:

A single gene can be amplified by using:

NUMS 2019 Reconduct
Biology
Biotechnology
Elimination Tool:

______ is the reconstruction of the lost part of the body.

NTS 2012
Biology
Growth and Development
Elimination Tool:

What CANNOT be true for a man having B+ve blood group?

NUMS 2019 Reconduct
Biology
Variation and Genetics
Elimination Tool:

Trypanosoma is a human parasite causing

UHS 2010
Biology
Kingdom Protista
Elimination Tool:

Among the most abundant biomolecules, _____ is the most abundant one on earth.

NUMS 2016
Chemistry
Biological Molecules
Elimination Tool:

Nissl’s granules are present in which part of the neuron?

Flagella might have arisen through the ingestion of

Which valve action results from an increase in pressure in the ventricles of the heart?

NUMS Mock 3
Biology
Transport

Sperms of liverworts, mosses, ferns move towards archegonia, in response to uncleic acid released by the ovum. This is an example of:

The spectrum of He is expected to be similar to that of:

NUMS Mock 4
Chemistry
Atomic Structure

The presence of peptidoglycan in gram-positive bacteria is:

PMC Practice 3
Biology
Kingdom Prokaryote
Elimination Tool:

Radiolarians belong to which of the following protozoal group?

DNA fingerprinting is basically done for:

NUMS Mock 1
Biology
Biotechnology

The end product of Glycolysis is:

NTS 2011
Biology
Bioenergetics
Elimination Tool:

Hornwarts are included in sub-class

In human gut, chylomicrons are formed by the combination of:

NUMS 2020
Biology
Nutrition
Elimination Tool:

Which one of the following is common to all neurons?

NUMS Mock 3
Biology
Coordination and Control

Only one ovary is functional at a time in:

NUMS 2015
Biology
Reproduction
Elimination Tool:

Which one is an organic compound?

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

Which of the following is NOT a part of the immune system?

NTS 2018
Biology
Transport
Elimination Tool:

Which of the following substance is most favorable to form structural component of biological membranes?

An increrase in plant girth due to activity of _____ is called secondary growth.

The cells which play a very important role in developing immunity are:

NUMS Mock 4
Biology
Transport

A plant has a growth pattern called

Major regional ecological community of plants and animals forms

The number of muscles in a human body is about:

NTS 2012
Biology
Support and Movement
Elimination Tool:

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

NUMS 2018
Biology
Man and His Environment
Elimination Tool:

The most abundant organic compounds in a mammalian cell are:

NUMS 2020
Biology
Cell Structure and Function
Elimination Tool:

Prosopis glandulosa is the botanical name of _______.

NTS 2016 SMBBMC
Biology
Kingdom Plantae
Elimination Tool:

Crossing over is an exchange of genes between _______ resulting in a mixture of parental characteristics in offspring.

NTS 2019
Biology
Cell Cycle
Elimination Tool:

The glycolate produced diffuses into the membrane bounded organelles called

The active sites of all enzyme are formed by:

NUMS 2016
Biology
Growth and Development
Elimination Tool:

The mammals termed as the connecting link between reptilians and mammals are:

NUMS 2014
Biology
Kingdom Animalia
Elimination Tool:

Which of the following light is least absorbed by the plants:

Which substance might include this molecule?

NUMS Mock 4
Biology
Biological Molecules

Exoskeleton of a marine snail is composed of

Whone is not the function of endoplasmic reticulum?

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

This theory says that “mitochondria and chloroplasts are, in effect, ancient bacteria which now live inside the larger cells”:

NUMS Mock 2
Biology
Evolution

The complete, mature and infection virus particle is known as:

PMC 2020
Biology
Bio-diversity | Variety of Life
Elimination Tool: