Biology Practice Test 3

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

In bacterial categories the bacteria smaller in number are

Digestion of which food components starts from the oral cavity?

NUMS Mock 3
Biology
Nutrition

Geothermal energy is

Q.27 During which of the following levels of biological organization can natural selection occur?

The only vein in human carrying oxygenated blood is:

PMC 2020
Biology
Transport
Elimination Tool:

The reason plants are considered totipotent is:

NUMS 2019 Cancelled
Biology
Growth and Development
Elimination Tool:

Which of the following has oxygenated blood?

NUMS 2014
Biology
Transport
Elimination Tool:

What is the risk of color blind baby boy in a family when mother is color blind but father is normal?

NUMS 2019 Cancelled
Biology
Variation and Genetics
Elimination Tool:

Which of the following is used in brewing industry to promote malting:

In DNA A.

Red algae do not contribute towards:

PMC 2020
Biology
Kingdom Plantae
Elimination Tool:

Which of the following types of transpiration account for 5 – 7 % of total transpiration that take place in plants?

NUMS 2019 Cancelled
Biology
Homeostasis
Elimination Tool:

Oyster mushroom is an example of predator fungi which attack on

Condensation of chromosomes reaches to the maximum during:

NUMS 2015
Biology
Cell Cycle
Elimination Tool:

In which of the following location enzymes controlling cellular respiration are present?

Which of the following is the respiratory surface in human beings?

PMC Practice 3
Biology
Gaseous Exchange
Elimination Tool:

During inspiration, the diaphragm:

PMC Practice 3
Biology
Gaseous Exchange
Elimination Tool:

The long chains of HIV-proteins are cut down by proteases enzyme of ______.

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

Spherical or tubular membranes which separate the material present in endoplasmic reticulum from that of cytoplasmic material are called

Treponema pallidum causes:

NUMS 2016
Biology
Reproduction
Elimination Tool:

Which of the following is not a vestigial organ of man?

NUMS Mock 1
Biology
Evolution

What is the commercial method of producing millions of seedlings in limited time?

NUMS 2016
Biology
Reproduction
Elimination Tool:

Numerous opportunistic diseases might attack a person suffering from which of the following diseases?

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

Which of the following offers an active barrier between the cell content and their environment by allowing only selective substances to pass through it?

NUMS 2019 Reconduct
Biology
Cell Structure and Function
Elimination Tool:

Its membranes are the sites where sunlight energy is trapped and where glucose is formed.

Which organelle is this?

NUMS 2014
Biology
Bioenergetics
Elimination Tool:

Which of the following is true in angiosperm life cycle?

NTS 2014
Biology
Kingdom Plantae
Elimination Tool:

Which of the following fish drink large amount of sea water and excrete concentrated urine resulting in maximum salt excretion and minimal water loss?

HIV is a:

NUMS Mock 3
Biology
Bio-diversity | Variety of Life

A pure breeding tall plant was crossed to dwarf plant. What would be probability of “Tt” genotype in F2

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

NUMS Mock 3
Biology
Variation and Genetics

In multicellular plants cell division occur by

Which of the following is not a parasitic fungus of plants?

NUMS 2015
Biology
Kingdom Plantae
Elimination Tool:

Plants of this group are called ferns:

NUMS 2017
Biology
Kingdom Plantae
Elimination Tool:

Speed of growth is

In bryophytes fertilization takes place in

Whose theory of natural selection is essentially identical to Darwin’s theory?

NUMS 2019 Cancelled
Biology
Evolution
Elimination Tool:

Stunted growth of roots is due to the deficiency of _____ in plants

The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by :

Antibiotics are produced by fungi and certain bacteria of group:

UHS 2013
Biology
Kingdom Fungi
Elimination Tool:

Glucose → 2 pyruvic acid + 2H2O

2ADP + 2Pi → 2 ATP

2NAD + 4H → 2NADH + 2H+

These three reactions collectively constitute ______.

NTS 2012
Biology
Bioenergetics
Elimination Tool:

Which of the following is an ovoviviparous organism?

PMC Sample 3
Biology
Kingdom Plantae
Elimination Tool:

When the temperature of the surrounding environment rises, body responds by:

PMC 2020
Biology
Homeostasis
Elimination Tool:

Feature of cancer cells in common?

About 55% of the volume of the human blood is?

NTS 2015 SMBBMC
Biology
Transport
Elimination Tool:

A weed engineered to produce a biodegradable plastic in cell granules is

Menstrual cycle can be divided into:

NUMS 2015
Biology
Reproduction
Elimination Tool:

The disease caused by Protozoal infection is:

NTS 2018
Biology
Kingdom Protista
Elimination Tool:

Puccinia is a parasitic:

From each pair of centrioles ________ sets of microtubules originate

In a bacterial cell, plasma membrane with all things present within it is called:

PMC Sample 3
Biology
Kingdom Prokaryote
Elimination Tool:

Which of the following statement(s) is/are correct regarding a nucleus?

I.Stores wastes and other Substances

II.Contains genetic material

III.Helps in cellular transport system

IV.Control centre of the cell

NTS 2017
Biology
Cell Structure and Function
Elimination Tool:

The only promoter of leaf senescence in the following plant hormones is:

Diaphragm is a sheet of:

NUMS 2019 Cancelled
Biology
Gaseous Exchange
Elimination Tool:

When the muscle is required to contract, calcium ion binds with ______ molecule and causes them to move slightly.

NUMS 2019 Cancelled
Biology
Support and Movement
Elimination Tool:

The cell wall of most of the bacteria have a unique macromolecule called_______.

NTS 2012
Biology
Biological Molecules
Elimination Tool:

Antherozoids the male gamete in bryophytes are attracted towards Archegonium i.e. female sex organ by

An association in which fungal hyphae penetrate the outer cells of the plant root forming coils swellings and minute branches and also extend out into surrounding soil is called:

A pure breeding plant with the dominant phenotype of character P and the recessive phenotype of character Q was crossed with another pure breeding plant with the recessive phenotype of chracter P and the dominant phenotype of Q. The offspring of this cross were crossed with a double homozygous recessive for P and Q and the following results were obtained:

22 were phenotypically dominant for P and recessive for Q
5 were phenotypically dominant for both P and Q
4 were phenotypically recessive for both P and Q
24 were phenotypically recessive for P and dominant for Q
Which one of the following types of Inheritance is illustrated by these results?

Biology
Variation and Genetics
NTS 2013
Elimination Tool:

A continuously varying trait is encoded by alleles of two or more different genes located at different loci, all influencing the same trait in an additive way is known as ________.

NUMS 2019 Cancelled
Biology
Variation and Genetics
Elimination Tool:

In mosquitoes, the plasmodium is found in?

NTS 2015 SMBBMC
Biology
Kingdom Animalia
Elimination Tool:

Carbohydrates, fats & proteins are essential for:

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 first bacterium isolated was

All populations within an ecosystem interconnected to one another are known as

Which processes are essential in making nitrogen from dead plant material available to growing plants?

ammonification
deamination
nitrification
nitrogen fixation
NUMS Mock 2
Biology
Man and His Enviornment

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

How many ml of blood is pumped by each contraction of the heart?

NUMS Mock 1
Biology
Transport

Which of the following statements is incorrect?

PMC Practice 1
Biology
Enzymes
Elimination Tool:

Strengthening material of prokaryotic cell wall is

E. coli and example of entrobacteriace is important for causing diarrheal diseases its size is:

Balance in the nutrient cycle can be upset when

Organisms that have had a foreign gene inserted into them are

This protist has isomorphic alternation of generation:

PMC 2021 Tested
Biology
Kingdom Protista
Elimination Tool:

Enzymes work by which of the following?

PMC Practice 1
Biology
Enzymes
Elimination Tool:

Which of the following photosystems is involved in cyclic photophosphorylation?

NUMS Mock 2
Biology
Bioenergetics

Four plants are present in different environmental conditions. Plant A is present in a warm climate with continuous rainfall, plant B is present in a cool forest, plant C is present in a warm climate with little breeze, while plant D is present in a warm climate with high wind speed. Which one of the above plants will have the highest rate of transpiration?

UHS 2019
Biology
Gaseous Exchange
Elimination Tool:

Which brain portion is responsible for controlling body coordination?

NUMS 2020
Biology
Coordination and Control
Elimination Tool:

Taq polymerase is extracted from a bacterium

Thymus is found in the human body in _____.

PMC Practice 2
Biology
Growth and Development
Elimination Tool:

Which body function is controlled through a positive feedback mechanism?

PMC 2020
Biology
Coordination and Control
Elimination Tool:

Now-a-days every newborn gets regular shots of vaccine for polio. It contains _________ for polio to make a child immune against this disease.

NUMS Mock 4
Biology
Bio-diversity | Variety of Life

Amylase is not produced by the following type(s) of salivary gland:

NUMS Mock 1
Biology
Nutrition

How many species of fungi are known till now

The concentration of Na ions in the body fluids is controlled by the ____ hormone.

NTS 2012
Biology
Homeostasis
Elimination Tool:

During the G2 phase:

UHS 2019
Biology
Cell Cycle
Elimination Tool:

Those fungi which can grow only on their living host and cannot be grown on available defined growth culture medium e.g. various mildews and most rust species are called

In cloning, nucleus is introduced into

Pseudocoelem develops from

Which of the following bacteria are able to release oxygen into the environment?

NTS 2018
Biology
Kingdom Protista
Elimination Tool:

The animals that feed on organic debris from decomposing plants and animals are called:

NUMS Mock 1
Biology
Man and His Environment

The structure which prevents the entry of food particles into the respiratory passage is:

NUMS 2019 Cancelled
Biology
Nutrition
Elimination Tool:

Which of the following compounds possesses a single covalent bond between carbon and hydrogen?

NUMS Mock 4
Chemistry
Hydrocarbons