Internal conversion is where

A molecule converts its excess energy to light, and emits a photon

the spin of an excited electron reverses, changing the state of the molecule (from singlet state to triplet state or vice vers

A molecule converts excess electronic energy to vibrational energy

In glycolysis, ATP is formed by the transfer of a high-energy phosphate from 1,3-bisphosphoglycerate to ADR No such high-energy phosphate donor has ever been isolated in mitochondria because

the techniques for isolating the phosphate donor are not refined enough

the high-energy phosphate donor is very short-lived and difficult to isolate

Why must the radiation source for fluorescence spectrometry be more powerful than for absorption spectroscopy?

Because the sample won't fluoresce if the incident radiation is of low power

Because the magnitude of the output signal is proportional to the power of the incident radiation

To allow for scattering by the sample

The catabolism of sugars and fatty acids is similar because

both of these compounds generate redox energy during catabolism

both of these compounds are funnelled through the TC A/citric acid cycle

both of these compounds generate chemical energy during catabolism

Due to Water logging:

An air is expelled from in-between the particles of soil.

Oxygen becomes unavailable to the roots of the plants.

Plants respire anaerobically which produces alcohol and kill them.

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

They coordinate to produce the cell.

They are found in all Eukaryotic cells.

They are found in multicellular organisms.

They coordinate to produce the cell.

They are small sized and mostly internal.

Cyclin dependent kinases are activated by which of the following?

Phosphorylation with CDK activating kinase

Binding to cyclin and CDK activating protein kinases

Phosphorylation with CDK activating kinase

Phosphorylation with tyrosine kinase

199 + Mcqs in Cell Cycle in Life Sciences Page 4 McqOptions

151.	Internal conversion is where
A.	A molecule converts its excess energy to light, and emits a photon
B.	the spin of an excited electron reverses, changing the state of the molecule (from singlet state to triplet state or vice vers
C.	none of the above
D.	A molecule converts excess electronic energy to vibrational energy
Answer» E.

Discussion

152.	Changes in which of the following characterizes mutations?
A.	Genotype
B.	Phenotype
C.	None of these
D.	Both ( and (
Answer» E.

Discussion

153.	In glycolysis, ATP is formed by the transfer of a high-energy phosphate from 1,3-bisphosphoglycerate to ADR No such high-energy phosphate donor has ever been isolated in mitochondria because
A.	no such phosphate donor exists
B.	the techniques for isolating the phosphate donor are not refined enough
C.	None of the above
D.	the high-energy phosphate donor is very short-lived and difficult to isolate
Answer» B. the techniques for isolating the phosphate donor are not refined enough

Discussion

154.	Why must the radiation source for fluorescence spectrometry be more powerful than for absorption spectroscopy?
A.	Because the sample won't fluoresce if the incident radiation is of low power
B.	Because the magnitude of the output signal is proportional to the power of the incident radiation
C.	None of the above
D.	To allow for scattering by the sample
Answer» C. None of the above

Discussion

155.	Quantitative measurement of bacterial growth can be carried out by measuring
A.	cell mass
B.	cell count
C.	all of these
D.	cell activity
Answer» D. cell activity

Discussion

156.	The gram-positive bacteria lack __________ structure/component?
A.	murein
B.	outer membrane
C.	plasma membrane
D.	teichoic acid
Answer» C. plasma membrane

Discussion

157.	In the cell cycle replication of the genome occurs in the
A.	G2 phase
B.	G1 phase
C.	S phase
D.	M phase
Answer» D. M phase

Discussion

158.	Which of the following structure(s) is /are external to cell wall?
A.	Stalks
B.	Flagella
C.	All of these
D.	Sheath
Answer» D. Sheath

Discussion

159.	The catabolism of sugars and fatty acids is similar because
A.	both of these compounds generate redox energy during catabolism
B.	both of these compounds are funnelled through the TC A/citric acid cycle
C.	all of the above
D.	both of these compounds generate chemical energy during catabolism
Answer» C. all of the above

Discussion

160.	The cell walls of many gram positive bacteria can be easily destroyed by the enzyme known as
A.	lysozyme
B.	lipase
C.	peroxidase
D.	pectinase
Answer» B. lipase

Discussion

161.	The process in which the food containing large, insoluble, molecules is broken down into small, water soluble molecules is called:
A.	Digestion
B.	Absorption
C.	Ingestion
D.	Assimilation
Answer» B. Absorption

Discussion

162.	What is the process of taking food into the body called?
A.	Digestion
B.	Assimilation
C.	Ingestion
D.	Egestion
Answer» D. Egestion

Discussion

163.	Animals which eat only plants are called:
A.	Herbivores
B.	Omnivores
C.	Carnivores
D.	None of the above
Answer» B. Omnivores

Discussion

164.	The process by which green plants make their own food from carbon dioxide and water by using sunlight energy in the presence of chlorophyll, is called:
A.	Xanthophylls
B.	Stomata
C.	Photosynthesis
D.	Chloroplast
Answer» D. Chloroplast

Discussion

165.	The nutrition in which an organism takes the complex organic food materials into its body by the process of ingestion, the ingested food is digested and then absorbed into the body cells of the organism:
A.	Parasitic nutrition
B.	Autotrophic nutrition
C.	Holozoic nutrition
D.	Heterotrophic nutrition
Answer» D. Heterotrophic nutrition

Discussion

166.	The nutrition in which an organism derives its food from the body of another living organism without killing it, it’s called:
A.	Saprotrophic nutrition
B.	Parasitic nutrition
C.	Holozoic nutrition
D.	Autotrophic nutrition
Answer» C. Holozoic nutrition

Discussion

167.	When an organism obtains its food from decaying organic matter of dead plants, dead animals and rotten bread, etc., it is called:
A.	Parasitic nutrition
B.	Autotrophic nutrition
C.	Holozoic nutrition
D.	Saprotrophic nutrition
Answer» E.

Discussion

168.	What is the mode of nutrition called in which organisms cannot make its own food from simple inorganic material and depends on other organisms for its food?
A.	Autotrophic nutrition
B.	Heterotrophic nutrition
C.	Parasitic nutrition
D.	Holozoic nutrition
Answer» C. Parasitic nutrition

Discussion

169.	The mode of nutrition in which an organism makes its own food from the simple inorganic material like carbon dioxide and water present in the surrounding is called:
A.	Heterotrophic nutrition
B.	Saprotrophic nutrition
C.	Autotrophic nutrition
D.	Holozoic nutrition
Answer» D. Holozoic nutrition

Discussion

170.	What is the process of intake of nutrients by an organism as well as the utilisation of these nutrients by the organisms called?
A.	Nutrition
B.	Photosynthesis
C.	Chloroplasts
D.	Digestion
Answer» B. Photosynthesis

Discussion

171.	Name an extension of the epidermal cells of a root which is in direct contact with the soil?
A.	Root Hairs
B.	Internodes
C.	Bundle Scars
D.	Pith
Answer» B. Internodes

Discussion

172.	Which of the following statements is/are correct? I. The net gaseous exchange in leaves at night is, oxygen diffuses in and carbon dioxide diffuses out. II. Net gaseous exchange during day time is, oxygen diffuses out and carbon dioxide diffuses in. Select the correct answer from the codes given below:
A.	Only I is correct.
B.	Only II is correct
C.	Both I and II are correct.
D.	Neither I nor II is correct.
Answer» D. Neither I nor II is correct.

Discussion

173.	Name the waste products secreted by Plants?
A.	Carbon Dioxide
B.	Oxygen
C.	Water Vapour
D.	All are correct.
Answer» E.

Discussion

174.	Various methods used by plants to get rid of their waste products are: I. Gaseous waste through stomata and lenticels. II. Stored solid and liquid waste by shedding leaves, peeling of bark and falling of fruits. III. By secreting waste in the form of gum and resins. Which of the following statements is/are correct?
A.	I and II are correct.
B.	II and III are correct.
C.	I and III are correct.
D.	I, II and III are correct.
Answer» E.

Discussion

175.	Some plants store waste in their fruits in the form of solid bodies called:
A.	Raphides
B.	Lenticels
C.	Stomata
D.	Resins
Answer» B. Lenticels

Discussion

176.	Respiration in Plants takes place through:
A.	Stomata
B.	Lenticels
C.	Both A and B
D.	Only A
Answer» D. Only A

Discussion

177.	Due to Water logging:
A.	An air is expelled from in-between the particles of soil.
B.	Oxygen becomes unavailable to the roots of the plants.
C.	Plants respire anaerobically which produces alcohol and kill them.
D.	All the above are correct.
Answer» E.

Discussion

178.	Name the process through which much needed oxygen is supplied to all the cells of the plants?
A.	Diffusion
B.	Endosmosis
C.	Exosmosis
D.	Photosynthesis
Answer» B. Endosmosis

Discussion

179.	Which of the following statements are correct regarding respiration in plants? I. Respiration is the process of releasing energy from food. II. Respiration takes place individually in all parts of the plants like stem, roots, leaves etc. III. The rate of respiration is slow in plants whereas it is faster in humans and animals. Select the correct answer from the codes given below:
A.	I and III are correct
B.	I and II are correct
C.	I, II and III are correct
D.	None of the above
Answer» D. None of the above

Discussion

180.	Blue green Algae are:
A.	Prokaryotes
B.	Eukaryotes
C.	Both a) and b)
D.	Neither a) nor b)
Answer» B. Eukaryotes

Discussion

181.	The jelly like substance present inside the cell is known as:
A.	Cytoplasm
B.	Ectoplasm
C.	Nucleoplasm
D.	None of the above
Answer» B. Ectoplasm

Discussion

182.	Name the process in which the membrane of a vesicle can fuse with the plasma membrane and extrude its contents to the surrounding medium?
A.	Exocytosis
B.	Endocytosis
C.	Osmosis
D.	Diffusion
Answer» B. Endocytosis

Discussion

183.	Name an organism which contains single chromosome and cell division occurs through fission or budding?
A.	Eukaryotes
B.	Prokaryotes
C.	Bacteria
D.	Primitive organism
Answer» C. Bacteria

Discussion

184.	Name the process in which the passage of water goes from a region of higher concentration to a region of lower concentration through a semi permeable membrane?
A.	Diffusion
B.	Osmosis
C.	Both a) and b)
D.	Neither a) nor b)
Answer» C. Both a) and b)

Discussion

185.	Which among the following sentence is not correct about the organelles?
A.	They are found in all Eukaryotic cells.
B.	They are found in multicellular organisms.
C.	They coordinate to produce the cell.
D.	They are small sized and mostly internal.
Answer» C. They coordinate to produce the cell.

Discussion

186.	Name the process in which the ingestion of material by the cells is done through the plasma membrane?
A.	Egestion
B.	Diffusion
C.	Osmosis
D.	Endocytosis
Answer» E.

Discussion

187.	Name the outer most boundary of the cell?
A.	Plasma membrane
B.	Cytoplasm
C.	Nuclear membrane
D.	None of the above
Answer» B. Cytoplasm

Discussion

188.	Name an Organelle which serves as a primary packaging area for molecules that will be distributed throughout the cell?
A.	Mitochondria
B.	Plastids
C.	Golgi apparatus
D.	Vacuole
Answer» D. Vacuole

Discussion

189.	Who discovered cell in 1665?
A.	Robert Hook
B.	Robert Crook
C.	David Thomson
D.	Marie Francois
Answer» B. Robert Crook

Discussion

190.	NAME_THE_CYCLIN_WHICH_TAKES_PART_IN_M_PHASE??$
A.	Cyclin E
B.	Cyclin A
C.	Cyclin D
D.	Cyclin B
Answer» E.

Discussion

191.	Name_the_enzyme_which_causes_ubiquitylation_and_destruction_of_cyclin.$
A.	Acid hydrolases
B.	Hyaluronidase
C.	Ubiquitin ligase
D.	Phosphatase
Answer» D. Phosphatase

Discussion

192.	Cyclin dependent kinases are activated by which of the following?
A.	Binding to cyclin
B.	Binding to cyclin and CDK activating protein kinases
C.	Phosphorylation with CDK activating kinase
D.	Phosphorylation with tyrosine kinase
Answer» C. Phosphorylation with CDK activating kinase

Discussion

193.	Name the regulatory component of the cell cycle?
A.	Cyclin
B.	CDK
C.	DNA
D.	APC
Answer» B. CDK

Discussion

194.	Name the process of nuclear division?
A.	Ubiquitylation
B.	Polymerization
C.	Karyokinesis
D.	Cytokinesis
Answer» D. Cytokinesis

Discussion

195.	How many hours does the M phase take to complete a cycle?
A.	8hr
B.	1 hr
C.	4 hr
D.	11 hr
Answer» C. 4 hr

Discussion

196.	Name the state where never dividing cells of neurons and skeletal muscle present?
A.	G0
B.	G1
C.	G2
D.	M
Answer» B. G1

Discussion

197.	Which of the following is not the part of Interphase in the cell cycle?
A.	S phase
B.	G1 phase
C.	G2 phase
D.	M phase
Answer» E.

Discussion

198.	Replication of DNA takes place in S phase.
A.	True
B.	False
Answer» B. False

Discussion

199.	Resting phase of the cell, where it undergoes growth and DNA replication is called_________
A.	Mitosis phase
B.	G1 phase
C.	Interphase
D.	M phase
Answer» D. M phase

Discussion

Explore topic-wise MCQs in Life Sciences.

Internal conversion is where

Changes in which of the following characterizes mutations?

In glycolysis, ATP is formed by the transfer of a high-energy phosphate from 1,3-bisphosphoglycerate to ADR No such high-energy phosphate donor has ever been isolated in mitochondria because

Why must the radiation source for fluorescence spectrometry be more powerful than for absorption spectroscopy?

Quantitative measurement of bacterial growth can be carried out by measuring

The gram-positive bacteria lack __________ structure/component?

In the cell cycle replication of the genome occurs in the

Which of the following structure(s) is /are external to cell wall?

The catabolism of sugars and fatty acids is similar because

The cell walls of many gram positive bacteria can be easily destroyed by the enzyme known as

The process in which the food containing large, insoluble, molecules is broken down into small, water soluble molecules is called:

What is the process of taking food into the body called?

Animals which eat only plants are called:

The process by which green plants make their own food from carbon dioxide and water by using sunlight energy in the presence of chlorophyll, is called:

The nutrition in which an organism takes the complex organic food materials into its body by the process of ingestion, the ingested food is digested and then absorbed into the body cells of the organism:

The nutrition in which an organism derives its food from the body of another living organism without killing it, it’s called:

When an organism obtains its food from decaying organic matter of dead plants, dead animals and rotten bread, etc., it is called:

What is the mode of nutrition called in which organisms cannot make its own food from simple inorganic material and depends on other organisms for its food?

The mode of nutrition in which an organism makes its own food from the simple inorganic material like carbon dioxide and water present in the surrounding is called:

What is the process of intake of nutrients by an organism as well as the utilisation of these nutrients by the organisms called?

Name an extension of the epidermal cells of a root which is in direct contact with the soil?

Name the waste products secreted by Plants?

Some plants store waste in their fruits in the form of solid bodies called:

Respiration in Plants takes place through:

Due to Water logging:

Name the process through which much needed oxygen is supplied to all the cells of the plants?

Blue green Algae are:

The jelly like substance present inside the cell is known as:

Name the process in which the membrane of a vesicle can fuse with the plasma membrane and extrude its contents to the surrounding medium?

Name an organism which contains single chromosome and cell division occurs through fission or budding?

Name the process in which the passage of water goes from a region of higher concentration to a region of lower concentration through a semi permeable membrane?

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

Name the process in which the ingestion of material by the cells is done through the plasma membrane?

Name the outer most boundary of the cell?

Name an Organelle which serves as a primary packaging area for molecules that will be distributed throughout the cell?

Who discovered cell in 1665?

NAME_THE_CYCLIN_WHICH_TAKES_PART_IN_M_PHASE??$

Name_the_enzyme_which_causes_ubiquitylation_and_destruction_of_cyclin.$

Cyclin dependent kinases are activated by which of the following?

Name the regulatory component of the cell cycle?

Name the process of nuclear division?

How many hours does the M phase take to complete a cycle?

Name the state where never dividing cells of neurons and skeletal muscle present?

Which of the following is not the part of Interphase in the cell cycle?

Replication of DNA takes place in S phase.

Resting phase of the cell, where it undergoes growth and DNA replication is called_________