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Biology: CUET Mock Test - 7 - CUET MCQ


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40 Questions MCQ Test CUET Mock Test Series - Biology: CUET Mock Test - 7

Biology: CUET Mock Test - 7 for CUET 2024 is part of CUET Mock Test Series preparation. The Biology: CUET Mock Test - 7 questions and answers have been prepared according to the CUET exam syllabus.The Biology: CUET Mock Test - 7 MCQs are made for CUET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Biology: CUET Mock Test - 7 below.
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Biology: CUET Mock Test - 7 - Question 1

Raising crops for the production of ethanol is known as __________

Detailed Solution for Biology: CUET Mock Test - 7 - Question 1

Raising crops for the production of ethanol is known as energy cropping. Fermentation is carried out with the help of Yeast. After fermentation, alcohol is separated through distillation.

Biology: CUET Mock Test - 7 - Question 2

Which wood is more suitable for fuel?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 2

Wood most suitable for fuel should be highly combustible. It should be hard and it should have a high calorific value. It should burn with good flame and sufficient heat.

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Biology: CUET Mock Test - 7 - Question 3

Hydrocarbons were first isolated from plant latex by __________

Detailed Solution for Biology: CUET Mock Test - 7 - Question 3

Hydrocarbons were first isolated from plant latex by Melvin Calvin. Utilising petroleum plants for energy cropping was also suggest by Melvin Calvin.

Biology: CUET Mock Test - 7 - Question 4

The first petroplant discovered was ____________

Detailed Solution for Biology: CUET Mock Test - 7 - Question 4

The first petroplant discovered was Euphorbia lathyrus by Calvin. 100 tonnes of the dry weight of this petroplant can yield 80 tonnes of crude oil and 200 tonnes of fermentable sugars.

Biology: CUET Mock Test - 7 - Question 5

Which of the following processes provide both energy and manure?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 5

Biogas formation yields manure for two crops in one acre and 2m3 of fuel gas having 9000 kcal of energy with useful one being 2700 kcal and at 30% burning efficiency.

Biology: CUET Mock Test - 7 - Question 6

Which of the following options does not include bad fuelwood?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 6

Good fuel or firewood include the woods of Acacia, Albizzia, Dalbergia, Adina, Terminalia, Casuarina, Quercus, etc. Bad fire or fuelwood include the woods of Pinus, Mangifera, Bombax, Michelia, etc.

Biology: CUET Mock Test - 7 - Question 7

Which of the following is not organic waste?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 7

Radioactive wastes are not organic wastes. Organic wastes include animal wastes, human wastes, agricultural wastes, crop residues, forest residues, aquatic weeds, etc.

Biology: CUET Mock Test - 7 - Question 8

Fuelwood is _______

Detailed Solution for Biology: CUET Mock Test - 7 - Question 8

 Wood used as a source of energy is called fuelwood. It is a renewable source of energy which can be harvested even by unskilled labours.

Biology: CUET Mock Test - 7 - Question 9

Producer gas is obtained through the process of _________

Detailed Solution for Biology: CUET Mock Test - 7 - Question 9

Producer gas is obtained through the process of combustion. It is used as an industrial fuel, in running certain engines including irrigation sets and manufacture of ammonia.

Biology: CUET Mock Test - 7 - Question 10

Which of the following options include energy crops.

Detailed Solution for Biology: CUET Mock Test - 7 - Question 10

The various energy crops include Sugarcane, Sugar beet, Potato, Tapioca and Maize. Energy crops can be used to produce alcohol and other energy fuels.

Biology: CUET Mock Test - 7 - Question 11

What is the social forestry?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 11

Social forestry is the raising and exploitation of small forests on common village lands, roadsides, railway embankments and other vacant lands by groups of people for obtaining their requirements of firewood, fodder and minor timber at very low cost.

Biology: CUET Mock Test - 7 - Question 12

Which of the following are the types of bioenergy?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 12

Bioenergy is the energy obtainable from biological sources i.e. living organisms, their wastes and residues. This includes animal energy and biofuels.

Biology: CUET Mock Test - 7 - Question 13

 What is the full form of AIDS?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 13

The full form of AIDS is Acquired Immune Deficiency Syndrome. This means deficiency of the immune system, acquired during the lifetime of an individual indicating that it is not a congenital disease.

Biology: CUET Mock Test - 7 - Question 14

Through which of the following routes, the transmission of AIDS does not take place?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 14

The transmission of AIDS takes place by Parenteral Route (though blood contact involving unscreened transfusion of blood, poorly sterilised surgical instruments, etc.), Sexual Route and Transplacental Route-Infection from infected mothers to foetus.

Biology: CUET Mock Test - 7 - Question 15

Which structure is depicted in the following figure?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 15

The given figure represents the structure of HIV. HIV consists of a core RNA with reverse transcriptase surrounded by a protein coat. The protein coat around the core consists of a protein called P-24. Outside this protein, the coat is a layer composed of another protein called P17.

Biology: CUET Mock Test - 7 - Question 16

How does the virus multiplication take place in the human body?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 16

After getting into the body of the person, the virus enters into macrophages where the RNA genome of the virus replicate to form viral DNA with the help of enzyme Reverse Transcriptase.

Biology: CUET Mock Test - 7 - Question 17

Which of the following cells behave as a factory of HIV?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 17

When the virus attacks the immune system of the body, it gets into the macrophages where the RNA genome of the virus replicates to form the viral DNA. This viral DNA gets incorporated into the host cell’s DNA and directs the infected cells to produce virus particles. The macrophages continue to produce virus and in this way acts like HIV factory.

Biology: CUET Mock Test - 7 - Question 18

In which year AIDS infection was detected in India?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 18

In India, AIDS infection was detected in 1986. In India, HIV positivity had reached high proportions in an area adjoining the golden triangle (Laos, Thailand and Myanmar) due to intravenous drug addictions.

Biology: CUET Mock Test - 7 - Question 19

AIDS was first reported in ___________

Detailed Solution for Biology: CUET Mock Test - 7 - Question 19

AIDS was first reported in the USA amongst homosexuals in 1981 and in last years or so, it has spread all over the world killing more than 25 million people.

Biology: CUET Mock Test - 7 - Question 20

Which of the following glycoproteins on the protein coat of virus helps it in the attachment of the virus to CD4 receptors?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 20

The outermost envelope consists of a phospholipid bilayer studded with glycoproteins (GP120 and GP41). The major cell infected by HIV is the Helper T-lymphocytes that bears the CD4 receptors site. The attachment pf virus to CD4 receptor site is by the help of GP120 on the protein coat of the virus.

Biology: CUET Mock Test - 7 - Question 21

The genetic material of AIDS virus is _________

Detailed Solution for Biology: CUET Mock Test - 7 - Question 21

HIV is a retrovirus having a rounded outline. The core has two single strands of genomic RNA, enzyme reverse transcriptase, protein P-15 associated with genomic RNA, inner covering of P-24 and outer of P-17.

Biology: CUET Mock Test - 7 - Question 22

Why does AIDS patient start suffering from other common infections?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 22

Due to the decrease in the number of T-lymphocytes, the person starts suffering from infections that could have been otherwise overcome such as those due to bacteria, viruses, fungi and even parasites.

Biology: CUET Mock Test - 7 - Question 23

Which organisation in India is helping to sensitize people about AIDS?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 23

In India, the National AIDS Control Organisation (NACO) and other non-governmental Organisations are doing a lot to educate people about AIDS. WHO has started a number of programmes to prevent the spreading of HIV infection.

Biology: CUET Mock Test - 7 - Question 24

AIDS is characterised by which of the following?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 24

AIDS is characterised by a reduction in the number of CD4 or helper T4-lymphocytes because of infection of the Human Immunodeficiency Virus. It is also called a slim disease.

Biology: CUET Mock Test - 7 - Question 25

The full form of CMI is __________

Detailed Solution for Biology: CUET Mock Test - 7 - Question 25

The full form of CMI is Cell-Mediated Immunity. The immune system comprises of T- lymphocytes that defend the body against pathogens, cancers and foreign structures like tissue transplants.

Biology: CUET Mock Test - 7 - Question 26

Which of the following is called as Competent lymphocytes?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 26

T-lymphocytes are called as Competent lymphocytes. The cells develop antigen specificity through the previous contact. T-lymphocytes respond to specific antigen by forming a clone of cells.

Biology: CUET Mock Test - 7 - Question 27

Which of the following sets include all the types of T-cells?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 27

T-cells of our immune system gets differentiated into Killer or cytotoxic cells, Helper cells, Suppressor cells and Memory cells. Killer, Helper and Suppressor T-cells are also called as Effector cells.

Biology: CUET Mock Test - 7 - Question 28

B-cells produce antibodies in response to the instruction received from _________

Detailed Solution for Biology: CUET Mock Test - 7 - Question 28

B-cells produce antibodies in response to the instruction received from Helper T-cells. Along with this, Helper T-cells also attract macrophages to the site of infection.

Biology: CUET Mock Test - 7 - Question 29

Which of the following cells of the immune system are responsible for causing pores in the plasma membrane of antigens?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 29

Killer T-cells are responsible for producing pores in the plasma membrane of the antigens. The interaction of Killer T-cells with antigens will produce perforins to kill the infected cells.

Biology: CUET Mock Test - 7 - Question 30

Helper T-cells can be distinguished from killer T-cells by the presence of _________

Detailed Solution for Biology: CUET Mock Test - 7 - Question 30

Helper T-cells can be distinguished from Killer T-cells by the presence of CD-4 receptor. CD-8 receptors are present in both Killer T-cells and Suppressor T-cells.

Biology: CUET Mock Test - 7 - Question 31

What is meant by Apoptosis?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 31

Apoptosis has been derived from an Ancient Greek word meaning “falling off”. In biology, Apoptosis refers to a form of programmed cell death that occurs in multicellular organisms. It is used by the immune system to get rid of the virus-infected cells.

Biology: CUET Mock Test - 7 - Question 32

Which of the following cell surfaces do not have Major Histocompatibility complex?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 32

The cell surface of Red Blood Corpuscle does not have Major Histocompatibility Complex. This complex is responsible for displaying the peptide fragments of antigens to the appropriate T-cells of our immune system.

Biology: CUET Mock Test - 7 - Question 33

What does T stand for in T-lymphocytes?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 33

The letter T in T-lymphocytes stands for Thymus. The thymus is a primary lymphoid organ which is responsible for differentiating T-lymphocytes into antigen sensitive lymphocytes.

Biology: CUET Mock Test - 7 - Question 34

How can Organ transplantation rejection be prevented?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 34

Our body produces a certain type of antibodies in response to the antigens. When an organ is transplanted, the body recognises the ‘non-self’ cells and starts attacking them. Therefore, Organ Transplantation rejection can be prevented by giving Immunosuppressant drugs so that the immune system gets suppressed and do not attack the ‘non-self’ cells.

Biology: CUET Mock Test - 7 - Question 35

Life span of T-cells __________

Detailed Solution for Biology: CUET Mock Test - 7 - Question 35

Life span of T-cells is around 4-5 years. The T-cells produced are relatively long-lived to compensate the less number of T-cells produced by thymus in the later years.

Biology: CUET Mock Test - 7 - Question 36

What is the life of the effector cells of the immune system?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 36

The life span of effector cells of the immune system is a few days only. Our body releases two types of cells-effector cells and memory cells, of which, effector cells are short-lived and are responsible for the primary response of our body.

Biology: CUET Mock Test - 7 - Question 37

Number of lymphocytes present in a healthy human is ___________

Detailed Solution for Biology: CUET Mock Test - 7 - Question 37

Number of lymphocytes present in a healthy human is 1 trillion. Unusually high or low lymphocyte counts can be a sign of disease.

Biology: CUET Mock Test - 7 - Question 38

Which of the following mediate the CMI?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 38

T-lymphocytes mediate CMI. T-cells/T-lymphocytes are long-lived small cells which have 100,000 receptor sites on their surface for binding antigens. T-cells themselves do not secrete antibodies but help B-cells to produce them.

Biology: CUET Mock Test - 7 - Question 39

What is the full form of AMI?

Detailed Solution for Biology: CUET Mock Test - 7 - Question 39

The full form of AMI is Antibody-Mediated Immunity. Antibodies are immunoglobulins which are produced in response to antigenic stimulation.

Biology: CUET Mock Test - 7 - Question 40

Number of antibodies produced per day during an infection can be _______

Detailed Solution for Biology: CUET Mock Test - 7 - Question 40

Number of antibodies produced per day during an infection can be 20 trillion. Antibodies are immunoglobulins which are produced in response to antigenic stimulation.

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