Assertion:- Ribosomes are involved in protein synthesis. Reason:- They are membrane bound cell organelles.

Assertion:- Ribosomes are involved in protein synthesis. Reason:- They are membrane bound cell organelles.
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Assertion:- Ribosomes are involved in protein synthesis. Reason:- They are membrane bound cell organelles. ... . If both Assertion & Reason are false.
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The most important mechanism by which tetracycline antibiotics exert antiimicrobial action is (a) They chelate Ca2+ ions and alter permeability of bacterial cell membrane (b) They bind to 30S ribosomes and inhibit bacterial protein synthesis (c) They bind to 50S ribosomes and interfere with translocation of the growing peptide chain in the bacteria (d) They interfere with DNA mediated RNA synthesis in bacteria

Description : The most important mechanism by which tetracycline antibiotics exert antiimicrobial action is (a) They chelate Ca2+ ions and alter permeability of bacterial cell membrane (b) They bind to 30S ribosomes ... peptide chain in the bacteria (d) They interfere with DNA mediated RNA synthesis in bacteria

Last Answer : Ans: B

The most important mechanism by which tetracycline antibiotics exert antimicrobial action is: A. They chelate Ca2+ ions and alter permeability of bacterial cell membrane B. They bind to 30S ribosomes and inhibit bacterial protein synthesis C. They bind to 50S ribosomes and interfere with translocation of the growing peptide chain in the bacteria D. They interfere with DNA mediated RNA synthesis in bacteria

Description : The most important mechanism by which tetracycline antibiotics exert antimicrobial action is: A. They chelate Ca2+ ions and alter permeability of bacterial cell membrane B. They bind to 30S ribosomes ... peptide chain in the bacteria D. They interfere with DNA mediated RNA synthesis in bacteria

Last Answer : B. They bind to 30S ribosomes and inhibit bacterial protein synthesis

Assertion:- All the organelles of eukaryotic cells are surrounded by either single or double membrane. Reason:- In eukaryotic cell none of cell organe

Description : Assertion:- All the organelles of eukaryotic cells are surrounded by either single or double membrane. Reason:- In eukaryotic cell none of cell organe

Last Answer : Assertion:- All the organelles of eukaryotic cells are surrounded by either single or double membrane. ... D. If both Assertion & Reason are false.

Which of the following ribosomes are engaged in protein synthesis in animal cell? (a) Ribosomes which occur on nuclear membrane and ER (b) Ribosomes of only cytosol (c) Ribosomes of only nucleolus and cytosol (d) Ribosomes of only mitochondria and cytosol

Description : Which of the following ribosomes are engaged in protein synthesis in animal cell? (a) Ribosomes which occur on nuclear membrane and ER (b) Ribosomes of only cytosol (c) Ribosomes of only nucleolus and cytosol (d) Ribosomes of only mitochondria and cytosol

Last Answer : (a) poleward movement

SRP receptors involved in protein export are present on (A) Ribosomes (B) Endoplasmic reticulum (C) Golgi appartus (D) Cell membrane

Description : SRP receptors involved in protein export are present on (A) Ribosomes (B) Endoplasmic reticulum (C) Golgi appartus (D) Cell membrane

Last Answer : Answer : B

The proteins destined to be transported out of the cell have all the following features except (A) They possess a signal sequence (B) Ribosomes synthesizing them are bound to endoplasmic reticulum (C) After synthesis, they are delivered into Golgi apparatus (D) They are tagged with ubiquitin

Description : The proteins destined to be transported out of the cell have all the following features except (A) They possess a signal sequence (B) Ribosomes synthesizing them are bound to endoplasmic reticulum (C) After synthesis, they are delivered into Golgi apparatus (D) They are tagged with ubiquitin

Last Answer : Answer : D

Proteins that are secreted by cells are generally a. not synthesized on membrane-bound ribosomes b. initially synthesized with a signal peptide or leader sequence at their C terminal c. found in vesicles and secretory granules d. moved across the cell membranes by endocytosis e. secreted in a form that is larger than the form present in the endoplasmic reticulum

Description : Proteins that are secreted by cells are generally a. not synthesized on membrane-bound ribosomes b. initially synthesized with a signal peptide or leader sequence at their C terminal c. found in ... endocytosis e. secreted in a form that is larger than the form present in the endoplasmic reticulum

Last Answer : found in vesicles and secretory granules

Intracellular organelles involved with protein synthesis include: a. Mitochondria b. Endoplasmic reticulum c. Golgi complex d. Lysosomes

Description : Intracellular organelles involved with protein synthesis include: a. Mitochondria b. Endoplasmic reticulum c. Golgi complex d. Lysosomes

Last Answer : Answer: b, c Mitochondria are the major source of energy production in eukaryotic cells. The endoplasmic reticulum is the network of interconnected membranes forming closed vesicles, ... containing acid hydrolytic enzymes that degrade polymers such as proteins, carbohydrates, and nucleic acids

Which of the following organelles are called the Protein Factories of the cell? (1) Chloroplasts (2) Lysosomes (3) Mitochondria (4) Ribosomes

Description : Which of the following organelles are called the Protein Factories of the cell? (1) Chloroplasts (2) Lysosomes (3) Mitochondria (4) Ribosomes

Last Answer : (4) Ribosomes Explanation: The ribosome works as the protein factory in every living cell. It gathers amino acids and assembles them into protein chains to make almost anything the cell needs.

What organelles would form a membrane-bound package also known as a vesicle?

Description : What organelles would form a membrane-bound package also known as a vesicle?

Last Answer : Need answer

Where do you find membrane bound organelles?

Description : Where do you find membrane bound organelles?

Last Answer : In the eukaryotic cells

.Which one of the following organelles is located near the nucleus and contains a collection of flattened membrane bound cisternae? (a) Nucleolus (b) Mitochondrion (c) Centriole (d) Golgi apparatus

Description : .Which one of the following organelles is located near the nucleus and contains a collection of flattened membrane bound cisternae? (a) Nucleolus (b) Mitochondrion (c) Centriole (d) Golgi apparatus

Last Answer : (d) Golgi apparatus

Membrane-bound organelles are absent in (a) Saccharomyces (b) Streptococcus (c) Chlamydomonas (d) Plasmodium.

Description : Membrane-bound organelles are absent in (a) Saccharomyces (b) Streptococcus (c) Chlamydomonas (d) Plasmodium.

Last Answer : (b) Streptococcus

Organelles involved in photorespiration are (a) Mitochondria, chloroplasts and ribosomes (b) Mitochondria, Peroxisomes and chloroplasts (c) Mitochondria, nucleus and ribosomes (d) Mitochondria, proxisomes and glyoxisomes

Description : Organelles involved in photorespiration are (a) Mitochondria, chloroplasts and ribosomes (b) Mitochondria, Peroxisomes and chloroplasts (c) Mitochondria, nucleus and ribosomes (d) Mitochondria, proxisomes and glyoxisomes

Last Answer : Ans. ((b))

Which of the following are not membrane bound? (a) Lysosomes (b) Mesosomes (c) Vacuoles (d) Ribosomes

Description : Which of the following are not membrane bound? (a) Lysosomes (b) Mesosomes (c) Vacuoles (d) Ribosomes

Last Answer : (d) Ribosomes

The signal sequence of proteins is cleaved off (A) On the ribosomes immediately after synthesis (B) In the endoplasmic reticulum (C) During processing in Golgi apparatus (D) During passage through the cell membrane

Description : The signal sequence of proteins is cleaved off (A) On the ribosomes immediately after synthesis (B) In the endoplasmic reticulum (C) During processing in Golgi apparatus (D) During passage through the cell membrane

Last Answer : Answer : B

Protein synthesis in an animal cell occurs (a) only on the ribosomes present in cytosol (b) only on ribosome attached to the nuclear envelope and endoplasmic reticulum (c) on ribosome present in the nucleolus as well as in cytoplasm (d) on ribosomes present in cytoplasm as well as in mitochondria.

Description : Protein synthesis in an animal cell occurs (a) only on the ribosomes present in cytosol (b) only on ribosome attached to the nuclear envelope and endoplasmic reticulum (c) on ribosome present in the ... as well as in cytoplasm (d) on ribosomes present in cytoplasm as well as in mitochondria.

Last Answer : (d) on ribosomes present in cytoplasm as well as in mitochondria.

.Protein synthesis in an animal cell occurs (a) only on the ribosomes present in cytosol (b) only on ribosome attached to the nuclear envelope and endoplasmic reticulum (c) on ribosome present in the nucleolus as well as in cytoplasm (d) on ribosomes present in cytoplasm as well as in mitochondria.

Description : .Protein synthesis in an animal cell occurs (a) only on the ribosomes present in cytosol (b) only on ribosome attached to the nuclear envelope and endoplasmic reticulum (c) on ribosome present in the ... as well as in cytoplasm (d) on ribosomes present in cytoplasm as well as in mitochondria.

Last Answer : (d) on ribosomes present in cytoplasm as well as in mitochondria.

Site of Protein synthesis in cell is — a. Mitochonderia b. Ribosomes c. Cell wall d. Chloroplast

Description : Site of Protein synthesis in cell is — a. Mitochonderia b. Ribosomes c. Cell wall d. Chloroplast

Last Answer : b. Ribosomes

Where does protein synthesis take place in all cells? a. mitochondria b. cell membranes c. ribosomes d. Golgi apparatus

Description : Where does protein synthesis take place in all cells? a. mitochondria b. cell membranes c. ribosomes d. Golgi apparatus

Last Answer : c. ribosomes

Which of the following proteins would not need localization signal? A- A nuclear protein B- A cytosolic protein C- A protein bound to the endoplasmic reticulum (ER) membrane D- A cell surface protein

Description : Which of the following proteins would not need localization signal? A- A nuclear protein B- A cytosolic protein C- A protein bound to the endoplasmic reticulum (ER) membrane D- A cell surface protein

Last Answer : A cytosolic protein

Which of the following cell organelles are not found in a bacterial cell? 1. Glyoxysomes 2. Lysosomes 3. Mitochondria 4. Ribosomes Select the correct answer using codes given below: (a) 1 and 4 (b) 2 and 4 (c) 1, 2 and 3 (d) 1, 2, 3 and 4

Description : Which of the following cell organelles are not found in a bacterial cell? 1. Glyoxysomes 2. Lysosomes 3. Mitochondria 4. Ribosomes Select the correct answer using codes given below: (a) 1 and 4 (b) 2 and 4 (c) 1, 2 and 3 (d) 1, 2, 3 and 4

Last Answer : Ans:(a)

Which of the following is true for nucleolus? (a) Larger nucleoli are present in dividing cells. (b) It is a membrane-bound structure. (c) It takes part in spindle formation. (d) It is a site for active ribosomal RNA synthesis.

Description : Which of the following is true for nucleolus? (a) Larger nucleoli are present in dividing cells. (b) It is a membrane-bound structure. (c) It takes part in spindle formation. (d) It is a site for active ribosomal RNA synthesis.

Last Answer : (d) It is a site for active ribosomal RNA synthesis.

By which of the following means antifungal chemotherapeutic agents may affect fungi? A- Interfere with nuclear division by preventing the aggregation of microtubules needed for mitosis B- Interfere with normal nucleic acid synthesisInterfere with ergosterol biosynthesis and thus alter the structure of the cytoplasmic C- membrane as well as the function of several membrane-bound enzymes like thoseinvolved in nutrient transport and chitin synthesis D- all of these

Description : By which of the following means antifungal chemotherapeutic agents may affect fungi? A- Interfere with nuclear division by preventing the aggregation of microtubules needed for mitosis B- ... membrane-bound enzymes like thoseinvolved in nutrient transport and chitin synthesis D- all of these

Last Answer : all of these

Which of the following is true for nucleolus ? (1) Larger nucleoli are present in dividing cells. (2) It is a membrane-bound structure. (3) It takes part in spindle formation. (4) It is a site for active ribosomal RNA synthesis.

Description : Which of the following is true for nucleolus ? (1) Larger nucleoli are present in dividing cells. (2) It is a membrane-bound structure. (3) It takes part in spindle formation. (4) It is a site for active ribosomal RNA synthesis.

Last Answer : (4) It is a site for active ribosomal RNA synthesis.

Which of the following statements about inclusion bodies is incorrect? (a) They are not bound by any membrane. (b) These are involved in ingestion of food particles. (c) They lie free in the cytoplasm. (d) These represent reserve material in cytoplasm.

Description : Which of the following statements about inclusion bodies is incorrect? (a) They are not bound by any membrane. (b) These are involved in ingestion of food particles. (c) They lie free in the cytoplasm. (d) These represent reserve material in cytoplasm.

Last Answer : (b) These are involved in ingestion of food particles

Which of the following statements are true of oxidants? A. In addition to their pathophysiologic roles in inflammation, injury, and infection, oxidants also have physiologic roles. B. Oxidants may be generated from activated neutrophils and during reperfusion following a period of ischemia. C. The deleterious effects of oxidants include lipid peroxidation and cell membrane damage, oxidative damage to DNA, and inhibition of adenosine triphosphate (ATP) synthesis. D. The mechanism of ischemia-reperfusion injury involved the catalytic production of superoxide anion (O 2•) by the enzyme xanthine oxidase.

Description : Which of the following statements are true of oxidants? A. In addition to their pathophysiologic roles in inflammation, injury, and infection, oxidants also have physiologic roles. B. Oxidants may ... involved the catalytic production of superoxide anion (O 2 ) by the enzyme xanthine oxidase.

Last Answer : Answer: ABCD DISCUSSION: Oxidants are reactive oxygen metabolites that have both physiologic and pathophysiologic roles. As potent oxidizing agents, oxidants are involved in cytochrome P ... leukocyte infiltration and activation, causing further tissue damage by the release of cytotoxic proteases

Ribosomes are the centre for (a) respiration (b) photosynthesis (c) protein synthesis (d) fat synthesis

Description : Ribosomes are the centre for (a) respiration (b) photosynthesis (c) protein synthesis (d) fat synthesis

Last Answer : (c) protein synthesis

Match the column I with column II. Column-I Column-II A. Golgi apparatus (i) Synthesis of protein B. Lysosomes (ii) Trap waste and excretory products C. Vacuoles (iii) Formation of glycoproteins and glycolipids D. Ribosomes (iv) Digesting biomolecules Choose the right match from options given below. (a) A-(iii), B-(iv), C-(ii), D-(i) (b) A-(iv), B-(iii), C-(i), D-(ii) (c) A-(iii), B-(ii), C-(iv), D-(i) (d) A-(i), B-(ii), C-(iv), D-(iii)

Description : Match the column I with column II. Column-I Column-II A. Golgi apparatus (i) Synthesis of protein B. Lysosomes (ii) Trap waste and excretory products C. Vacuoles (iii) Formation of glycoproteins and glycolipids D. Ribosomes (iv) Digesting ... ), C-(iv), D-(i) (d) A-(i), B-(ii), C-(iv), D-(iii)

Last Answer : (a) A-(iii), B-(iv), C-(ii), D-(i)

Which of the following act as the blueprint or template for the process of protein synthesis that takes place on ribosomes? A.rRNA B.DNA C.tRNA D.mRNA

Description : Which of the following act as the blueprint or template for the process of protein synthesis that takes place on ribosomes? A.rRNA B.DNA C.tRNA D.mRNA

Last Answer : mRNA

What are the membrane-bound sac the Golgi complex pack protein and other material into?

Description : What are the membrane-bound sac the Golgi complex pack protein and other material into?

Last Answer : Vesicles

The only correct statement about hormone receptors is (A) Receptors for protein hormones are present in cytosol (B) Receptors for steroid hormones are membrane bound (C) Hormone-receptor binding is irreversible (D) Receptors can undergo down regulation and up regulatoin

Description : The only correct statement about hormone receptors is (A) Receptors for protein hormones are present in cytosol (B) Receptors for steroid hormones are membrane bound (C) Hormone-receptor binding is irreversible (D) Receptors can undergo down regulation and up regulatoin

Last Answer : Answer : D

The cellular organelles called “suicide bags” are (A) Lysosomes (B) Ribosomes (C) Nucleolus (D) Golgi’s bodies

Description : The cellular organelles called “suicide bags” are (A) Lysosomes (B) Ribosomes (C) Nucleolus (D) Golgi’s bodies

Last Answer : A

Which of the following organelles contain enzymes that have digestive action? (a) Ribosomes (b) Polysomes (c) Plastids (d) Lysosomes

Description : Which of the following organelles contain enzymes that have digestive action? (a) Ribosomes (b) Polysomes (c) Plastids (d) Lysosomes

Last Answer : (d) Lysosomes

Cellular organelles with membranes are (a) endoplasmic reticulum, ribosomes and nuclei (b) lysosomes, Golgi apparatus and mitochondria (c) nuclei, ribosomes and mitochondria (d) chromosomes, ribosomes and endoplasmic reticulum.

Description : Cellular organelles with membranes are (a) endoplasmic reticulum, ribosomes and nuclei (b) lysosomes, Golgi apparatus and mitochondria (c) nuclei, ribosomes and mitochondria (d) chromosomes, ribosomes and endoplasmic reticulum.

Last Answer : (b) lysosomes, Golgi apparatus and mitochondria

What is evidence for the endosymbiotic theory? a. Ribosomes are the same size in eukaryotes and prokaryotes b. Organelles like mitochondria and cholorplasts have their own dna and ribosomes c. Flagella are the same in both types of cells d. A-C are correct

Description : What is evidence for the endosymbiotic theory? a. Ribosomes are the same size in eukaryotes and prokaryotes b. Organelles like mitochondria and cholorplasts have their own dna and ribosomes c. Flagella are the same in both types of cells d. A-C are correct

Last Answer : b. Organelles like mitochondria and cholorplasts have their own dna and ribosomes

Most hormone receptors are localized on the cell membrane and transduce hormone binding into altered levels of intracellular messengers. A limited number of intracellular receptors do exist. Which of the following statement(s) is/are true concerning intracellular receptors? a. The messengers or hormones must by lipophilic b. These intracellular receptors generally regulate protein synthesis c. The intracellular receptors are located entirely in the nucleus of the cell d. A heat-shock protein serves as an inhibitor protein blocking the DNA-binding domain of the steroid receptor

Description : Most hormone receptors are localized on the cell membrane and transduce hormone binding into altered levels of intracellular messengers. A limited number of intracellular receptors do exist. Which of ... protein serves as an inhibitor protein blocking the DNA-binding domain of the steroid receptor

Last Answer : Answer: a, d Although most hormone and other messenger receptors are extracellular, intracellular receptors have been identified. The hormone messengers involved for these receptors are primarily ... DNA-binding domain of the receptor. Activation involves the dissociation of the inhibitor protein

Which does NOT occur in a cell stimulated by a steroid hormone? A) The steroid hormone enters the cell by crossing the plasma membrane. B) The hormone binds to a receptor molecule in the cytoplasm. C) The second messenger cyclic AMP is stimulated by the hormone-receptor complex. D) The hormone-receptor complex binds the chromatin and activates certain genes. E) DNA is transcribed, mRNA is translated, and the result is protein synthesis.

Description : Which does NOT occur in a cell stimulated by a steroid hormone? A) The steroid hormone enters the cell by crossing the plasma membrane. B) The hormone binds to a receptor molecule in the ... activates certain genes. E) DNA is transcribed, mRNA is translated, and the result is protein synthesis.

Last Answer : C) The second messenger cyclic AMP is stimulated by the hormone-receptor complex. D) The hormone-receptor complex binds the chromatin and activates certain genes.

Bactericidal action of aminoglycoside antibiotics is due to: A. Inhibition of bacterial protein synthesis B. Alteration of bacterial cell membrane permeability C. Damage to bacterial cell wall D. Inhibition of bacterial oxidative metabolism

Description : Bactericidal action of aminoglycoside antibiotics is due to: A. Inhibition of bacterial protein synthesis B. Alteration of bacterial cell membrane permeability C. Damage to bacterial cell wall D. Inhibition of bacterial oxidative metabolism

Last Answer : B. Alteration of bacterial cell membrane permeability

Absorption of solute ions is regulated by (A) Nucleus wall (B) Cell organelles (C) Vacuoles (D) Plant cell membrane

Description : Absorption of solute ions is regulated by (A) Nucleus wall (B) Cell organelles (C) Vacuoles (D) Plant cell membrane

Last Answer : (A) Nucleus wall

Which of the following organelles has single membrane? (a) Mitochondria (b) Spherosomes (c) Nucleus (d) Cell wall

Description : Which of the following organelles has single membrane? (a) Mitochondria (b) Spherosomes (c) Nucleus (d) Cell wall

Last Answer : (b) Spherosomes

Which one of the following cell organelles is enclosed by a single membrane? (a) Lysosomes (b) Nuclei (c) Mitochondria (d) Chloroplasts

Description : Which one of the following cell organelles is enclosed by a single membrane? (a) Lysosomes (b) Nuclei (c) Mitochondria (d) Chloroplasts

Last Answer : (a) Lysosomes

Eukaryotic cells have extensive intracellular membranes, termed the endomembrane system, which divide the cell into structurally and functionally distinct compartments, or organelles. These include the inner cell membrane, nuclear envelope, endoplasmic reticulum, the Golgi apparatus, and lysosomes. Name a cellular component whose membrane is not part of the endomembrane system.

Description : Eukaryotic cells have extensive intracellular membranes, termed the endomembrane system, which divide the cell into structurally and functionally distinct compartments, or organelles. These include the inner cell ... . Name a cellular component whose membrane is not part of the endomembrane system.

Last Answer : Mitochondria; also chloroplasts

Assertion: Chloroplasts are known as semiautonomus cell organelle. Reason: Chloroplast has lipoprotein membrane.

Description : Assertion: Chloroplasts are known as semiautonomus cell organelle. Reason: Chloroplast has lipoprotein membrane.

Last Answer : Assertion: Chloroplasts are known as semiautonomus cell organelle. Reason: Chloroplast has lipoprotein ... If both Assertion & Reason are false.

Read the assertion and reason carefully to mark the correct option in question. Assertion: In the cell membrane , the non-polar tail of saturated hydr

Description : Read the assertion and reason carefully to mark the correct option in question. Assertion: In the cell membrane , the non-polar tail of saturated hydr

Last Answer : Read the assertion and reason carefully to mark the correct option in question. Assertion: In the cell ... D. If both Assertion & Reason are false.

Assertion : Insulin is not given orally. Reason : Insulin hormone is lipid-soluble and directily enters inside the cell membrane.

Description : Assertion : Insulin is not given orally. Reason : Insulin hormone is lipid-soluble and directily enters inside the cell membrane.

Last Answer : Assertion : Insulin is not given orally. Reason : Insulin hormone is lipid-soluble and directily enters ... D. If both Assertion and Reason are false.

A prokaryotic cell does not have which of the followin (1) Ribosomes (2) Cell membrane (3) Nucleus (4) DNA

Description : A prokaryotic cell does not have which of the followin (1) Ribosomes (2) Cell membrane (3) Nucleus (4) DNA

Last Answer : (3) Nucleus Explanation: Prokaryotic cells do not contain a nucleus or any other membrane-bound organelle. The word "prokaryotic" means "before nucleus." Prokaryotes include two groups: ... another group called archaea. In contrast, eukatyotic cells have etrue" nucleus containing their DNA.

Which one of the following does not differ in E.coli and Chlamydomonas? (a) Ribosomes (b) Chromosomal organization (c) Cell wall (d) Cell membrane

Description : Which one of the following does not differ in E.coli and Chlamydomonas? (a) Ribosomes (b) Chromosomal organization (c) Cell wall (d) Cell membrane

Last Answer : (d) Cell membrane

In eubacteria, a cellular component that resembles eukaryotic cell is (a) plasma membrane (b) nucleus (c) ribosomes (d) cell wall.

Description : In eubacteria, a cellular component that resembles eukaryotic cell is (a) plasma membrane (b) nucleus (c) ribosomes (d) cell wall.

Last Answer : (a) plasma membrane

Where is ATP produced in prokaryotic cells? a. In The Mitochondria b. In The Chloroplast c. On The Cell Membrane d. On The Ribosomes

Description : Where is ATP produced in prokaryotic cells? a. In The Mitochondria b. In The Chloroplast c. On The Cell Membrane d. On The Ribosomes

Last Answer : b. In The Chloroplast