All the following statements regarding calcium are correct except (A) It diffuses as a divalent cation (B) It freely diffuses across the endoplasmic reticulum of muscle cells (C) It can exist in the blood as ionic form and also protein bound (D) It is found in high concentration in bones

All the following statements regarding calcium are correct except (A) It diffuses as a divalent cation (B) It freely diffuses across the endoplasmic reticulum of muscle cells (C) It can exist in the blood as ionic form and also protein bound (D) It is found in high concentration in bones
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Answer : B
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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

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

Which of the following statements is not correct? (a) Lysosomes are formed by the process of packaging in the endoplasmic reticulum. (b) Lysosomes have numerous hydrolytic enzymes. (c) The hydrolytic enzymes of lysosomes are active under acidic pH. (d) Lysosomes are membrane-bound structures.

Description : Which of the following statements is not correct? (a) Lysosomes are formed by the process of packaging in the endoplasmic reticulum. (b) Lysosomes have numerous hydrolytic enzymes. (c) The hydrolytic enzymes of lysosomes are active under acidic pH. (d) Lysosomes are membrane-bound structures.

Last Answer : (a) Lysosomes are formed by the process of packaging in the endoplasmic reticulum.

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

Ribosomes similar to those of bacteria found in (A) Plant nuclei (B) Cardiac muscle cytoplasm (C) Liver endoplasmic reticulum (D) Neuronal cytoplasm

Description : Ribosomes similar to those of bacteria found in (A) Plant nuclei (B) Cardiac muscle cytoplasm (C) Liver endoplasmic reticulum (D) Neuronal cytoplasm

Last Answer : Answer : A

Ribosomes similar to those of bacterial found in (A) Plant nucei (B) Cardiac muscle cytoplasm (C) Liver endoplasmic reticulum (D) Neuronal cytoplasm

Description : Ribosomes similar to those of bacterial found in (A) Plant nucei (B) Cardiac muscle cytoplasm (C) Liver endoplasmic reticulum (D) Neuronal cytoplasm

Last Answer : Answer : A

Insulin: a. has a half-lilfe of 60 minutes b. stimulate glycolysis in liver and muscle c. stimulate lipogenesis in liver and fat tissues d. is synthesized in the endoplasmic reticulum of the beta cells

Description : Insulin: a. has a half-lilfe of 60 minutes b. stimulate glycolysis in liver and muscle c. stimulate lipogenesis in liver and fat tissues d. is synthesized in the endoplasmic reticulum of the beta cells

Last Answer : is synthesized in the endoplasmic reticulum of the beta cells

Assertion:- Smooth endoplasmic reticulum is frequently observed in protein secretory cells. Reason:- Lumen of smooth endoplasmic reticulum is the only

Description : Assertion:- Smooth endoplasmic reticulum is frequently observed in protein secretory cells. Reason:- Lumen of smooth endoplasmic reticulum is the only

Last Answer : Assertion:- Smooth endoplasmic reticulum is frequently observed in protein secretory cells. Reason:- Lumen ... If both Assertion & Reason are false.

The three-dimensional network of protein filaments within the cytoplasm of eukaryotic cells is called the (A) Endoplasmic reticulum (B) Golgi apparatus (C) Cytoskeleton (D) None of these

Description : The three-dimensional network of protein filaments within the cytoplasm of eukaryotic cells is called the (A) Endoplasmic reticulum (B) Golgi apparatus (C) Cytoskeleton (D) None of these

Last Answer : (C) Cytoskeleton

$ Endoplasmic reticulum also acts as the cell-skelton. ! Flagellum of a prokaryotic cell is formed of a protein called Tubulin.

Description : $ Endoplasmic reticulum also acts as the cell-skelton. ! Flagellum of a prokaryotic cell is formed of a protein called Tubulin.

Last Answer : $ Endoplasmic reticulum also acts as the cell-skelton. ! Flagellum of a prokaryotic cell is formed of a ... wrong D. If both As and R are wrong.

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

In mammalian cells rRNA is produced mainly in the (A) Endoplasmic reticulum (B) Ribosome (C) Nucleolus (D) Nucleus

Description : In mammalian cells rRNA is produced mainly in the (A) Endoplasmic reticulum (B) Ribosome (C) Nucleolus (D) Nucleus

Last Answer : C

A stage in cell division is shown in the figure. Select the answer which gives correct identification of the stage with its characteristics. (a) Cytokinesis Cell plate formed, mitochondria distributed between two daughter cells.(b) Telophase Endoplasmic reticulum and nucleolus not reformed yet. (c) Telophase Nuclear envelope reforms,Golgi complex reforms. (d) Late anaphase Chromosomes move away from equatorial plate, Golgi complex not present.

Description : A stage in cell division is shown in the figure. Select the answer which gives correct identification of the stage with its characteristics. (a) Cytokinesis Cell plate formed, mitochondria ... reforms. (d) Late anaphase Chromosomes move away from equatorial plate, Golgi complex not present.

Last Answer : (c) Telophase Nuclear envelope reforms,Golgi complex reforms.

All the enzymes involved in the synthesis of cholesterol are found in (A) Mitochondria (B) Golgi apparatus (C) Nucleus (D) Endoplasmic reticulum and cytosol

Description : All the enzymes involved in the synthesis of cholesterol are found in (A) Mitochondria (B) Golgi apparatus (C) Nucleus (D) Endoplasmic reticulum and cytosol

Last Answer : Answer : D

The enzymes of the pentose phosphate pathway are found in the (A) Cytosol (B) Mitochondria (C) Nucleus (D) Endoplasmic reticulum

Description : The enzymes of the pentose phosphate pathway are found in the (A) Cytosol (B) Mitochondria (C) Nucleus (D) Endoplasmic reticulum

Last Answer : Answer : A

All the enzymes of glycolysis pathway are found in (A) Extramitochondrial soluble fraction of the cell (B) Mitochondria (C) Nucleus (D) Endoplasmic reticulum

Description : All the enzymes of glycolysis pathway are found in (A) Extramitochondrial soluble fraction of the cell (B) Mitochondria (C) Nucleus (D) Endoplasmic reticulum

Last Answer : Answer : A

Which of the following statements about extracellular fluid are true? A. The total extracellular fluid volume represents 40% of the body weight. B. The plasma volume constitutes one fourth of the total extracellular fluid volume. C. Potassium is the principal cation in extracellular fluid. D. The protein content of the plasma produces a lower concentration of cations than in the interstitial fluid. E. The interstitial fluid equilibrates slowly with the other body compartments.

Description : Which of the following statements about extracellular fluid are true? A. The total extracellular fluid volume represents 40% of the body weight. B. The plasma volume constitutes one fourth ... the interstitial fluid. E. The interstitial fluid equilibrates slowly with the other body compartments.

Last Answer : Answer: B DISCUSSION: The total extracellular fluid volume represents 20% of body weight. The plasma volume is approximately 5% of body weight. Sodium is the principal cation. The ... fluid and cerebrospinal fluid, the majority of the interstitial fluid exists as a rapidly equilibrating component

Each of the following is a cell organelle except one. Which one of these is NOT a cell organelle? Is it a) mitochondrion b) lysosome c) cytoplasm d) endoplasmic reticulum

Description : Each of the following is a cell organelle except one. Which one of these is NOT a cell organelle? Is it a) mitochondrion b) lysosome c) cytoplasm d) endoplasmic reticulum

Last Answer : ANSWER: C -- CYTOPLASM 

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

Inside cell, protein synthesis is done by B A. Lysosomes B. Rough endoplasmic reticulum C. Mitochondria D. Golgi bodies

Description : Inside cell, protein synthesis is done by  B A. Lysosomes B. Rough endoplasmic reticulum C. Mitochondria D. Golgi bodies

Last Answer : Rough endoplasmic reticulum

nside cell, protein synthesis is done by B A. Lysosomes B. Rough endoplasmic reticulum C. Mitochondria D. Golgi bodies

Description : nside cell, protein synthesis is done by B A. Lysosomes B. Rough endoplasmic reticulum C. Mitochondria D. Golgi bodies

Last Answer : Golgi bodies

.Protein synthesis in an animal cell, takes place (a) in the cytoplasm as well as endoplasmic reticulum (b) only on ribose attached to nucleon (c) only in the cytoplasm (d) in the nucleolus as well as in the cytoplasm.

Description : .Protein synthesis in an animal cell, takes place (a) in the cytoplasm as well as endoplasmic reticulum (b) only on ribose attached to nucleon (c) only in the cytoplasm (d) in the nucleolus as well as in the cytoplasm.

Last Answer : (d) in the nucleolus as well as in the cytoplasm.

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, takes place (a) in the cytoplasm as well as endoplasmic reticulum (b) only on ribose attached to nucleon (c) only in the cytoplasm (d) in the nucleolus as well as in the cytoplasm.

Description : Protein synthesis in an animal cell, takes place (a) in the cytoplasm as well as endoplasmic reticulum (b) only on ribose attached to nucleon (c) only in the cytoplasm (d) in the nucleolus as well as in the cytoplasm.

Last Answer : (d) in the nucleolus as well as in the cytoplasm.

.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.

Rough endoplasmic reticulum is involved in the synthesis of a. glycogen b. protein c. steroids d. lipids

Description : Rough endoplasmic reticulum is involved in the synthesis of a. glycogen b. protein c. steroids d. lipids

Last Answer : protein

Which one of the following organelle in the figure correctly matches with its function? (a) Golgi apparatus, formation of glycolipids (b) Rough endoplasmic reticulum, protein synthesis (c) Rough endoplasmic reticulum, formation of glycoproteins (d) Golgi apparatus, protein synthesis

Description : Which one of the following organelle in the figure correctly matches with its function? (a) Golgi apparatus, formation of glycolipids (b) Rough endoplasmic reticulum, protein synthesis (c) Rough endoplasmic reticulum, formation of glycoproteins (d) Golgi apparatus, protein synthesis

Last Answer : (b) Rough endoplasmic reticulum, protein synthesis

Which of the following events does not occur in rough endoplasmic reticulum? (a) Protein folding (b) Protein glycosylation (c) Cleavage of signal peptide (d) Phospholipid synthesis

Description : Which of the following events does not occur in rough endoplasmic reticulum? (a) Protein folding (b) Protein glycosylation (c) Cleavage of signal peptide (d) Phospholipid synthesis

Last Answer : (d) Phospholipid synthesis

Which of the following events does not occur in rough endoplasmic reticulum ? (1) Protein folding (2) Protein glycosylation (3) Cleavage of signal peptide (4) Phospholipid synthesis

Description : Which of the following events does not occur in rough endoplasmic reticulum ? (1) Protein folding (2) Protein glycosylation (3) Cleavage of signal peptide (4) Phospholipid synthesis

Last Answer : (4) Phospholipid synthesis

It is a mesh of interconnected membranes that serve a function involving protein synthesis and transport. (A) Endoplasmic reticulum B) Cytoskeleton (C) Golgi apparatus (D) Both A and B

Description : It is a mesh of interconnected membranes that serve a function involving protein synthesis and transport. (A) Endoplasmic reticulum B) Cytoskeleton (C) Golgi apparatus (D) Both A and B

Last Answer : (A) Endoplasmic reticulum

All the following statements about TSH are true except (A) It is a tropic hormone (B) It acts on para-follicular cells of thyroid glands (C) Its receptors are membrane-bound (D) Its second messenger is cyclic AMP

Description : All the following statements about TSH are true except (A) It is a tropic hormone (B) It acts on para-follicular cells of thyroid glands (C) Its receptors are membrane-bound (D) Its second messenger is cyclic AMP

Last Answer : Answer : B

When [s] is equal to Km, which of the following conditions exist? (A) Half the enzyme molecules are bound to substrate (B) The velocity of the reaction is equal to Vmax (C) The velocity of the reaction is independent of substrate concentration (D) Enzyme is completely saturated with substrate

Description : When [s] is equal to Km, which of the following conditions exist? (A) Half the enzyme molecules are bound to substrate (B) The velocity of the reaction is equal to Vmax (C) The velocity of the reaction is independent of substrate concentration (D) Enzyme is completely saturated with substrate

Last Answer : Answer : A

Proteins that are destined to be secreted from the cells must pass through a series of organelles. These organelles include: a. Endoplasmic reticulum b. Golgi apparatus c. Mitochondria d. Lysosomes

Description : Proteins that are destined to be secreted from the cells must pass through a series of organelles. These organelles include: a. Endoplasmic reticulum b. Golgi apparatus c. Mitochondria d. Lysosomes

Last Answer : Answer: a, b, d Proteins targeted for the secretory pathway most commonly begin with translocation from the cytoplasm across the lipid bilayer into the lumen of the endoplasmic reticulum. It ... apparatus where they are further processed and sorted and end up in a secretory vesicle or lysosome

The power house of energy in cells is (a) Golgi bodies (b) Mitochondria (c) Ribosomes (d) Endoplasmic reticulum

Description : The power house of energy in cells is (a) Golgi bodies (b) Mitochondria (c) Ribosomes (d) Endoplasmic reticulum

Last Answer : Ans:(b)

In land plants, the guard cells differ from other epidermal cells in having (a) cytoskeleton (b) mitochondria (c) endoplasmic reticulum (d) chloroplasts.

Description : In land plants, the guard cells differ from other epidermal cells in having (a) cytoskeleton (b) mitochondria (c) endoplasmic reticulum (d) chloroplasts.

Last Answer : (d) chloroplasts.

Which one of the following structures between two adjacent cells is an effective transport pathway? (a) Plasmodesmata (b) Plastoquinones (c) Endoplasmic reticulum (d) Plasmalemma

Description : Which one of the following structures between two adjacent cells is an effective transport pathway? (a) Plasmodesmata (b) Plastoquinones (c) Endoplasmic reticulum (d) Plasmalemma

Last Answer : (a) Plasmodesmata

Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells? (a) Endoplasmic reticulum (b) Peroxisomes (c) Golgi bodies (d) Polysomes

Description : Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells? (a) Endoplasmic reticulum (b) Peroxisomes (c) Golgi bodies (d) Polysomes

Last Answer : (c) Golgi bodies

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

In studies of cells, the nuclei, mitochondria, endoplasmic reticulum, dictyosomes, microbodies and plastids are collectively known as what in the eucaryotic cell?

Description : In studies of cells, the nuclei, mitochondria, endoplasmic reticulum, dictyosomes, microbodies and plastids are collectively known as what in the eucaryotic cell?

Last Answer : ANSWER: ORGANELLES

The structure in cells which contains light absorbing pigment is (1) Endoplasmic reticulum (2) Nucleus (3) Chloroplast (4) Chromoplast

Description : The structure in cells which contains light absorbing pigment is (1) Endoplasmic reticulum (2) Nucleus (3) Chloroplast (4) Chromoplast

Last Answer : Chloroplast

In addition to the DNA of nucleus there DNA is (A) Mitochondrian (B) Endoplasmic reticulum (C) Golgi apparatus (D) Plasma membrane

Description : In addition to the DNA of nucleus there DNA is (A) Mitochondrian (B) Endoplasmic reticulum (C) Golgi apparatus (D) Plasma membrane

Last Answer : Answer : A

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

Extranuclear DNA is present in (A) Ribosomes (B) Endoplasmic reticulum (C) Lysosomes (D) Mitochondria

Description : Extranuclear DNA is present in (A) Ribosomes (B) Endoplasmic reticulum (C) Lysosomes (D) Mitochondria

Last Answer : Answer : D

Porphyrins are synthesized in (A) Cytosol (B) Mitochondria (C) Cytosol and mitochondria (D) Rough endoplasmic reticulum

Description : Porphyrins are synthesized in (A) Cytosol (B) Mitochondria (C) Cytosol and mitochondria (D) Rough endoplasmic reticulum

Last Answer : Answer : C

Pyruvate dehydrogenase complex is located in (A) Cytosol (B) Lysosomes (C) Mitochondria (D) Endoplasmic reticulum

Description : Pyruvate dehydrogenase complex is located in (A) Cytosol (B) Lysosomes (C) Mitochondria (D) Endoplasmic reticulum

Last Answer : Answer : C

The amino alcohol sphingosine is synthesized in (A) Mitochondria (B) Cytosol (C) Nucleus (D) Endoplasmic reticulum

Description : The amino alcohol sphingosine is synthesized in (A) Mitochondria (B) Cytosol (C) Nucleus (D) Endoplasmic reticulum

Last Answer : Answer : D

Enzymes responsible for ketone body formation are associated mainly with the (A) Mitochondria (B) Endoplasmic reticulum (C) Nucleus (D) Golgi apparatus

Description : Enzymes responsible for ketone body formation are associated mainly with the (A) Mitochondria (B) Endoplasmic reticulum (C) Nucleus (D) Golgi apparatus

Last Answer : Answer : A

The enzymes of the citric acid cycle are located in (A) Mitochondrial matrix (B) Extramitochondrial soluble fraction of the cell (C) Nucleus (D) Endoplasmic reticulum

Description : The enzymes of the citric acid cycle are located in (A) Mitochondrial matrix (B) Extramitochondrial soluble fraction of the cell (C) Nucleus (D) Endoplasmic reticulum

Last Answer : Answer : A

The action of Vitamin K in formation of clotting factor is through (A) Post transcription (B) Post translation (C) Golgi complex (D) Endoplasmic reticulum

Description : The action of Vitamin K in formation of clotting factor is through (A) Post transcription (B) Post translation (C) Golgi complex (D) Endoplasmic reticulum

Last Answer : Answer : B

Enzymes catalyzing electron transport are present mainly in the (A) Ribosomes (B) Endoplasmic reticulum (C) Lysosomes (D) Inner mitochondrial membrane

Description : Enzymes catalyzing electron transport are present mainly in the (A) Ribosomes (B) Endoplasmic reticulum (C) Lysosomes (D) Inner mitochondrial membrane

Last Answer : D