Generate Quiz 6A929ABB23483

1 / 50

The Induced fit model was introduced by Koshland in which of the following year?

PMC Sample 1
Biology
Enzymes
Elimination Tool:

A) 1960

B) 1961

C) 1959

D) 1966

2 / 50

How many amino acids are constituents of proteins in the human body only?

Biology
PMC Practice 15
Biological Molecules
Proteins
Elimination Tool:

A) 20

B) 24

C) 23

D) 25

3 / 50

The most abundant substance in protoplasm is:

FMDC 2015
Biology
Biological Molecules
Elimination Tool:

A) Protein

B) Fat

C) Carbohydrate

D) Water

4 / 50

If another molecule, having a shape very similar to the enzymes substrate, binds to its active site, it would then ____ the enzyme’s function:

NUMS 2020
Biology
Enzymes
Elimination Tool:

A) Fasten

B) Inhibit

C) Reverse

D) Decrease

5 / 50

Optimum temperature for enzymes of human body is:

NUMS 2018
Biology
Enzymes
Elimination Tool:

A) 90 F

B) 95 F

C) 98 F

D) 100 F

6 / 50

Nucleotides are building blocks of nucleic acids.
Each nucleotide is a composite molecule formed
by

Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) base sugar phosphate

B) base sugar OH

C) bases

D) sugar phosphate.

7 / 50

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
Plasma Membrane
Elimination Tool:

A) Cell wall

B) Plasma membrane

C) Nuclear membrane

D) Vacuole

8 / 50

NAD is an example of:

PMC 2020
Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) Mononucleotide

B) Dinucleotide

C) Trinucleotide

D) Tetranucleotide

9 / 50

Endoplasmic reticulum contains a system of flattened membrane-bounded sacs which are named as:

Biology
Cell Structure and Function
Elimination Tool:

A) Cristae

B) Marks

C) Cisternae

D) Tubules

10 / 50

Organelle involved in aerobic respiration:

Biology
Cell Structure and Function
Elimination Tool:

A) Mitochondria

B) Lysosome

C) Plastids

D) Ribosome

11 / 50

A vitamin that doesn’t act as a coenzyme is

PMC Practice 21
Biology
Enzymes
Elimination Tool:

A) Vitamin c

B) Vitamin b

C) Vitamin b1

D) Vitamin b2

12 / 50

Many types of lipids exist in nature. Triglyceride is also known as?

PMC Practice 29
Biology
Biological Molecules
Lipids
Elimination Tool:

A) neutral lipid

B) natural lipid

C) wax

D) all of these

13 / 50

Which of the following correctly shows structures which are found in a eukaryotic cell? (Yes = present ; No = absent)

NUMS 2018
Biology
Cell Structure and Function
Prokaryotic and Eukaryotic Cells
Elimination Tool:

A) Option A

B) Option B

C) Option C

D) Option D

E) Option E

14 / 50

A compound produced as a result of a chemical reaction of an alcohol with an acid in which water molecule is released is called___________.

PMC Practice 14
Biology
Biological Molecules
Lipids
Elimination Tool:

A) Monosaccharide

B) Fatty acid

C) Nucleic acid

D) Neutral lipid

15 / 50

All of the following organelles contain DNA except:

Biology
Cell Structure and Function
Elimination Tool:

A) Ribosomes

B) Chloroplast

C) Nucleus

D) Mitochondria

16 / 50

Growth and development of plant cells is the role of:

Biology
PMC Practice 34
Cell Structure and Function
Prokaryotic and Eukaryotic Cells
Elimination Tool:

A) Parenchymatous cells

B) Chlorenchymatous cells

C) Meristematic cells

D) Sclerenchymatous cells

17 / 50

Myofilaments are made up of:

PMC 2021 Tested
Biology
Cell Structure and Function
Cytoplasm and Organelles
Elimination Tool:

A) Minerals

B) Lipids

C) Proteins

D) Carbohydrates

18 / 50

Upon increasing the temperature the shape of enzyme’s active site?

PMC Sample 2
Biology
Enzymes
Elimination Tool:

A) remains same

B) denatures

C) adopts a geometric conformation

D) dissolves

19 / 50

Monosaccharides are major components of:

Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) DNA, ATP. Ribulose bisphosphate and Cysteine

B) DNA, NAD and Insulin

C) DNA, NADP, ATP and Ribulose bisphosphate

D) DNA, RNA and Myosin

20 / 50

Which among the following sentence is not correct about the organelles?

NUMS 2019 Reconduct
Biology
Cell Structure and Function
Cytoplasm and Organelles
Elimination Tool:

A) They are found in all Eukaryotic cells.

B) They are only found in multicellular organisms.

C) They coordinate to produce the cell.

D) They are small sized and mostly internal.

21 / 50

Vegetative source of protein is:

PMC 2021 Tested
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Soya bean

B) Plant

C) Egg

D) Meat

22 / 50

Which of the following describes the fluid mosaic model of plasma membrane structure?

Biology
Cell Structure and Function
Elimination Tool:

A) Phospholipid monolayer with embedded proteins

B) Phospholipid bilayer with embedded proteins

C) Triglyceride bilayer with embedded proteins

D) Triglyceride monolayer with embedded proteins

23 / 50

Select the pair of organs, that contains a large number of mitochondria:

NUMS 2020
Biology
Cell Structure and Function
Cytoplasm and Organelles
Elimination Tool:

A) Stomach and Liver

B) Muscle and Stomach

C) Heart and Liver

D) Liver and Muscle

24 / 50

The helical structure of a protein is kept by the formation of hydrogen bond between amino acid molecules which are:

NUMS 2015
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Adjacent to each other

B) In successive spiral turns

C) Between two different polypeptide chains

D) None of the given options

25 / 50

Unit of carbohydrate is?

PMC Practice 33
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Monosaccharides

B) Amino acids

C) Fatty acids

D) All

26 / 50

How many peptide bonds are present in an insulin molecule?

Biology
Biological Molecules
Elimination Tool:

A) 49

B) 50

C) 51

D) 48

27 / 50

What are the four elements that make up 99% of all elements found in a living system?

Biology
Biological Molecules
Introduction to Biological Molecules
Elimination Tool:

A) C, H, O, and P

B) C, N, O ,and P

C) H, O, C ,and N

D) C, H, O ,and S.

28 / 50

In cross-section each Centriole consist of nine (each in triplets) of:

UHS 2018
Biology
Cell Structure and Function
Cytoplasm and Organelles
Elimination Tool:

A) Microfilaments

B) Microvilli

C) Microtubules

D) Intermediate filaments

29 / 50

5 different amino acids, numbered 1, 2, 3, 4, and 5, below from the following sequence in the path of a polypeptide chain:

1-2-3-4-2-5-3

Messenger RNA codon, which correspond to the amino acids, are:
amino acid 1 UGU

amino acid 2 GAU

amino acid 3 CAC

amino acid 4 UAG

amino acid 5 AAG

Which one of the following DNA bases sequences could provide the code for the given section of the polypeptide?

NTS 2015 DUHS and JSMU
Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) ACACTTGTGATGCTATTCGTG

B) ACACUAGUGAUGCUAUUCGUG

C) ACACTAGTGATGCTAAACGTG

D) ACACTAGTGATCCTATTCGTG

30 / 50

Which structure of protein gives information about the folding of a protein?

PMC Practice 8
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Primary structure

B) Secondary structure

C) Tertiary structure

D) Quaternary structure

31 / 50

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

NTS 2012
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Cellulose

B) Chitin

C) Fibres

D) Fats

E) Peptidoglycan

32 / 50

Inner concave surface of Golgi complex is called ______ face.

NUMS 2019 Cancelled
Biology
Cell Structure and Function
Cytoplasm and Organelles
Elimination Tool:

A) Ending

B) Forming

C) Starting

D) Maturing

33 / 50

The optimum pH of “salivary amylase” is:

A) 6.8

B) 6

C) 8.8

D) 8

34 / 50

What is the part of the cell membrane which is in contact with the internal and external environments?

Biology
PMC Practice 15
Cell Structure and Function
Elimination Tool:

A) Hydrophobic

B) Hydrophilic

C) Neutral

D) Both Options A and B are correct

35 / 50

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:

A) Feedback inhibitor

B) Non-competitive inhibitor

C) Allosteric modulator

D) Competitive inhibitor

36 / 50

ATP is a

Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) nucleotide

B) nucleoside

C) nucleic acid

D) vitamin.

37 / 50

According to the lock and key model, the substrate acts as a?

Biology
PMC Practice 35
Enzymes
Elimination Tool:

A) Lock

B) Key

C) Both of these options are correct

D) None of these options are correct

38 / 50

When a single polypeptide chain folds upon itself and forms a globular structure, it is the __________ of the proteins. It is maintained by three types of bonds, namely ionic, hydrogen and disulfide.

Biology
Biological Molecules
Elimination Tool:

A) Primary conformation

B) Secondary conformation

C) Tertiary conformation

D) Quaternary conformation

39 / 50

If water has a high latent heat of vaporization, how could this property of water be helpful to plants and animals?

UHS 2019
Biology
Biological Molecules
Water
Elimination Tool:

A) With the release of large amount of water, a small amount of heat loss can take place.

B) With the release of small amount of water vapours, a great amount of heat loss can take place.

C) It will keep their temperature very high.

D) No cooling effect, with the release of even a large amount of water vapours.

40 / 50

Carbohydrate catabolism is concerned with the fate of:

Biology
PMC Practice 35
Biological Molecules
Carbohydrates
Elimination Tool:

A) ATP

B) Glucose

C) Amino acids

D) None of these options are correct

41 / 50

Which of the following organelle is responsible for the production of steroid hormones?

Biology
Cell Structure and Function
Elimination Tool:

A) Mitochondria

B) Golgi bodies

C) Smooth endoplasmic reticulum

D) Rough endoplasmic reticulum

42 / 50

The structure present in a eukaryotic cell but absent in prokaryotic cells is:

Biology
Cell Structure and Function
Elimination Tool:

A) Nucleus

B) DNA

C) Ribosomes

D) Cell surface membrane

43 / 50

Which of the following organelle is associated with the single membrane?

Biology
Cell Structure and Function
Elimination Tool:

A) Mitochondria

B) Endoplasmic Reticulum

C) Nucleus

D) Chloroplast

44 / 50

It is suspected that this cell is prokaryotic. The presence of which of these cell structures would confirm that the cell is prokaryotic?

PMC Practice 5
Biology
Cell Structure and Function
Prokaryotic and Eukaryotic Cells
Elimination Tool:

A) Cytoplasm

B) Ribosomes

C) Flagella

D) Peptidoglycan cell wall

45 / 50

The Induced fit model was introduced by Kosh land in which of the following year?

PMC Practice 25
Biology
Enzymes
Elimination Tool:

A) 1960

B) 1961

C) 1959

D) 1966

46 / 50

Which is distributed more widely in a cell?

PMC Practice 12
Biology
Biological Molecules
Nucleic Acids
Elimination Tool:

A) DNA

B) RNA

C) Chloroplasts

D) Phagosomes

47 / 50

Which of the following would not be observed in a bacterial cell?

PMC Practice 21
Biology
Cell Structure and Function
Prokaryotic and Eukaryotic Cells
Elimination Tool:

A) DNA

B) Cell membrane

C) Golgi apparatus

D) Ribosomes

48 / 50

How many essential amino acids are there?

UHS 2017 Reconduct
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Three

B) Six

C) Nine

D) Twelve

49 / 50

Which substances can cross plasma more easily?

PMC Practice 14
Biology
Cell Structure and Function
Plasma Membrane
Elimination Tool:

A) Starch

B) Protein

C) Lipid soluble molecules

D) Ions

50 / 50

‘Biomolecules’ such as starch, cellulose and glycogen yield which of the following upon hydrolysis?

PMC Practice 30
Biology
Biological Molecules
Carbohydrates
Elimination Tool:

A) Maltose

B) Sucrose

C) Glucose

D) Galactose

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