Pyrenoids are the centers for formation of: (a) Proteins (b) enzymes (c) Fat (d) Starch

Pyrenoids are the centers for formation of: (a) Proteins (b) enzymes (c) Fat (d) Starch
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Pyrenoids are the centres for formation of (a) Porphyra (b) enzymes (c) fat (d) starch

Description : Pyrenoids are the centres for formation of (a) Porphyra (b) enzymes (c) fat (d) starch

Last Answer : (d) starch.

The pyrenoids are made up of (a) proteinaceous centre and starchy sheath (b) core of nucleic acid surrounded by protein sheath (c) core of protein surrounded by fatty sheath (d) core of starch surrounded by sheath of protein.

Description : The pyrenoids are made up of (a) proteinaceous centre and starchy sheath (b) core of nucleic acid surrounded by protein sheath (c) core of protein surrounded by fatty sheath (d) core of starch surrounded by sheath of protein.

Last Answer : a) proteinaceous centre and starchy sheath

Which of the following human digestive enzymes is incorrectly matched to its substrate? a) pepsin - protein b) trypsin - starch (pron: TRIP-sin) c) pancreatic amylase - starch (pron: AM-i-lase) d) lipase - fat e) maltase - maltose.

Description : Which of the following human digestive enzymes is incorrectly matched to its substrate? a) pepsin - protein b) trypsin - starch (pron: TRIP-sin) c) pancreatic amylase - starch (pron: AM-i-lase) d) lipase - fat e) maltase - maltose.

Last Answer : ANSWER: B -- TRYPSIN - STARCH

Consider the following statements: (1) Cutin is a fatty acid polymer (2) Starch is a fatty acid polymer (3) Sucrose is monosaccharide (4) Maltose is polymer of fructose

Description : Consider the following statements: (1) Cutin is a fatty acid polymer (2) Starch is a fatty acid polymer (3) Sucrose is monosaccharide (4) Maltose is polymer of fructose

Last Answer : Ans. ((b))

Floridean starch is found in: (a) Chlorophyceae (b) Myxophyceae (c) Phaeophyceae (d) Rhodophyceae

Description : Floridean starch is found in: (a) Chlorophyceae (b) Myxophyceae (c) Phaeophyceae (d) Rhodophyceae

Last Answer : Ans. ((d))

In cereals, the layer containing specialized cells filled with starch are called

Description : In cereals, the layer containing specialized cells filled with starch are called

Last Answer : In cereals, the layer containing specialized cells filled with starch are called – Aleuron layer

Describe the cell organelle which is responsible for the synthesis of starch.

Description : Describe the cell organelle which is responsible for the synthesis of starch. 

Last Answer : The cell organelle responsible for the formation of starch is Chloroplast. It was discovered by Sachs and named by Schimper. It is usually disc shaped or Biconvex or Oval or spherical.   ... granum and the unstacked thylakoids that connect the adjacent grana are called as Stroma thylakoids.  

Development of shoot and root is determined by: (a) Cytokinin and auxin ratio (b) Enzymes (c) Temperature (d) Plant nutrients

Description : Development of shoot and root is determined by: (a) Cytokinin and auxin ratio (b) Enzymes (c) Temperature (d) Plant nutrients

Last Answer : Ans. ((a))

Regulator gene controls chemical synthesis (Operon concept) by (a) Inhibiting transcription of mRNA (b) Inhibiting enzymes (c) Inhibiting passage of mRNA (d) Inhibiting substrate enzyme reaction

Description : Regulator gene controls chemical synthesis (Operon concept) by (a) Inhibiting transcription of mRNA (b) Inhibiting enzymes (c) Inhibiting passage of mRNA (d) Inhibiting substrate enzyme reaction

Last Answer : Ans. ((a))

Mark the INCORRECT statement about agar, a gelling agent in plant tissue culture medium a. Not digested by plant enzymes b. It does not use in micro-propagation work c. It does not react with media constituents d. Remain stable at incubation temperature

Description : Mark the INCORRECT statement about agar, a gelling agent in plant tissue culture medium a. Not digested by plant enzymes b. It does not use in micro-propagation work c. It does not react with media constituents d. Remain stable at incubation temperature

Last Answer : b. It does not use in micro-propagation work

In the bacteria: (1) Mesosome is present (2) Nucleoid represents the genome (3) Ribosomes are found in cytoplasm (4) Histone proteins complexed with DNA

Description : In the bacteria: (1) Mesosome is present (2) Nucleoid represents the genome (3) Ribosomes are found in cytoplasm (4) Histone proteins complexed with DNA

Last Answer : Ans. ((a))

What are pyrenoids? -Biology

Description : What are pyrenoids? -Biology

Last Answer : answer:

$ Chlamydomonas has many pyrenoids. ! Pyrenoids help in the storage of oil droplets.

Description : $ Chlamydomonas has many pyrenoids. ! Pyrenoids help in the storage of oil droplets.

Last Answer : $ Chlamydomonas has many pyrenoids. ! Pyrenoids help in the storage of oil droplets. A. If both As and R ... is wrong D. If both As and R are wrong.

Consider the following statement: (1) In plant cells, cytokinesis start with the formation of the phragmoplast (2) Phragmoplast comprises intrazonal microtubules and Golgi vesicles (3) Primary cell wall is produced by microtubules (4) Phragmoplast is formed by nucleus

Description : Consider the following statement: (1) In plant cells, cytokinesis start with the formation of the phragmoplast (2) Phragmoplast comprises intrazonal microtubules and Golgi vesicles (3) Primary cell wall is produced by microtubules (4) Phragmoplast is formed by nucleus

Last Answer : Ans. ((a))

The formation of multivalents at meiosis in diploid organism is due to: (a) Monosomy (b) Delection (c) Inversion (d) Reciprocal translocation

Description : The formation of multivalents at meiosis in diploid organism is due to: (a) Monosomy (b) Delection (c) Inversion (d) Reciprocal translocation

Last Answer : Ans. ((d))

Colchicines prevent the spindle formation during: (a) Prophase (b) Metaphase (c) Anaphase (d) Telophase

Description : Colchicines prevent the spindle formation during: (a) Prophase (b) Metaphase (c) Anaphase (d) Telophase

Last Answer : Ans. ((b))

In angiosperm, triple fusion is necessary for the formation of: (a) Embryo (b) Pollen (c) Endosperm (d) Leaf

Description : In angiosperm, triple fusion is necessary for the formation of: (a) Embryo (b) Pollen (c) Endosperm (d) Leaf

Last Answer : Ans. ((c))

Formation of diploid embryosac from diploid vegetative structure, e.g., nucellus or integument etc., without meiosis is called: (a) Apospory (b) Apomixis (c) Diplospory (d) Adventives polyembryony

Description : Formation of diploid embryosac from diploid vegetative structure, e.g., nucellus or integument etc., without meiosis is called: (a) Apospory (b) Apomixis (c) Diplospory (d) Adventives polyembryony

Last Answer : Ans. ((a))

Formation of 8-nucleate embryosac by pollen grains is also called as

Description : Formation of 8-nucleate embryosac by pollen grains is also called as

Last Answer : Formation of 8-nucleate embryosac by pollen grains is also called as – Nemec phenomenon 

Role of CFC present in atmosphere is to a) Reduction in ozone b) Ozone formation c) Formation of leg haemoglobin a) Enhance chlorophyll formation.

Description : Role of CFC present in atmosphere is to a) Reduction in ozone b) Ozone formation c) Formation of leg haemoglobin a) Enhance chlorophyll formation.

Last Answer : a) Reduction in ozone

Mycorrhizae is associated with the following a) Formation of root nodules b) Hyphae penetrating the soil c) Found mostly in lower plants d) Soil erosion

Description : Mycorrhizae is associated with the following a) Formation of root nodules b) Hyphae penetrating the soil c) Found mostly in lower plants d) Soil erosion

Last Answer : a) Formation of root nodules

Do enzymes in saliva change starch into sugar?

Description : Do enzymes in saliva change starch into sugar?

Last Answer : Need answer

What events happen when enzymes are added to starch suspension?

Description : What events happen when enzymes are added to starch suspension?

Last Answer : That will depend on the exact enzymes that are added.

The enzymes sucrose acts on – (1) sucrose only (2) sucrose and starch (3) all disaccharides (4) any organic monomer

Description : The enzymes sucrose acts on – (1) sucrose only (2) sucrose and starch (3) all disaccharides (4) any organic monomer

Last Answer : (1) sucrose only Explanation: Sucrase enzymes are located on the brush border of the small intestine. The enzymes catalyze the hydrolysis of sucrose to its subunits fructose and glucose.

In making ****, in the process of ____ barley grains are steeped in water while naturally occurring enzymes digest the starch to simpler carbohydrates. a. steeping b. mashing c. maltng d. worting

Description : In making beer, in the process of ____ barley grains are steeped in water while naturally occurring enzymes digest the starch to simpler carbohydrates. a. steeping b. mashing c. maltng d. worting

Last Answer : c. maltng

Organic substance of large molecular size is (A) Starch (B) Insulin (C) Lipids (D) Proteins

Description : Organic substance of large molecular size is (A) Starch (B) Insulin (C) Lipids (D) Proteins

Last Answer : Answer : D

Frequently employed materials for the adsorption chromatography of proteins include (A) High capacity supporting gel (B) Starch blocks (C) Calcium phosphate gel alumina gel and hydroxy apatite (D) All of these

Description : Frequently employed materials for the adsorption chromatography of proteins include (A) High capacity supporting gel (B) Starch blocks (C) Calcium phosphate gel alumina gel and hydroxy apatite (D) All of these

Last Answer : Answer : C

Amino acids are the building blocks of (a) Vitamins (b) Starch (c) Proteins (d) Lipids

Description : Amino acids are the building blocks of (a) Vitamins (b) Starch (c) Proteins (d) Lipids

Last Answer : Ans:(c)

The saliva helps in the digestion of – (1) Proteins (2) Starch (3) Fibres (4) Fats

Description : The saliva helps in the digestion of – (1) Proteins (2) Starch (3) Fibres (4) Fats

Last Answer : (2) Starch Explanation: Amylase enzymes secreted in saliva help break down starches into simpler sugar molecules that can be absorbed into the bloodstream. In this way, amylase activity influences blood glucose levels, which need to be maintained within an optimal range for good health.

The saliva secreted in the mouth digests (1) Proteins (2) Starch (3) Fats (4) Vitamins

Description : The saliva secreted in the mouth digests (1) Proteins (2) Starch (3) Fats (4) Vitamins

Last Answer : (2) Starch Explanation: The enzymes found in saliva are essential in beginning the process of digestion of dietary starches and fats. These enzymes also play a role in breaking down food particles entrapped within dental crevices, protecting teeth from bacterial decay.

Iodine solution is used to test the presence of – (1) Sugar (2) Proteins (3) Starch (4) Fats

Description : Iodine solution is used to test the presence of – (1) Sugar (2) Proteins (3) Starch (4) Fats

Last Answer : (3) Starch Explanation: Iodine solution is used to test the presence of starch.

Saliva helps in the digestion of - (1) Fats (2) Starch (3) Proteins (4) Vitamins

Description : Saliva helps in the digestion of - (1) Fats (2) Starch (3) Proteins (4) Vitamins

Last Answer : (2) Starch Explanation: Produced in salivary glands, saliva is 98% water, but it contains many important substances, including electrolytes, mucus, antibacterial compounds and various enzymes. The digestive ... . Thus, digestion of food occurs within the mouth, even before food reaches the stomach.

Which category of compound is most concentrated energy source? (1) Fats (2) Starch (3) Proteins (4) Vitamins

Description : Which category of compound is most concentrated energy source? (1) Fats (2) Starch (3) Proteins (4) Vitamins

Last Answer : (1) Fats Explanation: Fat is the most concentrated source of food energy. Fat that is liquid at room temperature is called an oil.

What role does enzyme pepsin play? (1) It converts fats into acids (2) If converts fats into glycerol (3) It converts proteins into peptones (4) It converts starch into sugar

Description : What role does enzyme pepsin play? (1) It converts fats into acids (2) If converts fats into glycerol (3) It converts proteins into peptones (4) It converts starch into sugar

Last Answer : (3) It converts proteins into peptones Explanation: Pepsin is an endopeptidase that breaks down proteins into peptone and polypeptides. If is produced in the stomach and is one of the main digestive enzymes.

Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids? (A) Starch (B) Cellulose (C) Proteins (D) Nucleic acids

Description : Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids? (A) Starch (B) Cellulose (C) Proteins (D) Nucleic acids

Last Answer : (C) Proteins

Reproductive phase of fruit plants is improved by the accumulation of _____: a. Nitrogen b. Starch c. Proteins d. Cellulose

Description : Reproductive phase of fruit plants is improved by the accumulation of _____: a. Nitrogen b. Starch c. Proteins d. Cellulose

Last Answer : Starch

Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product? (a) Small intestine : Proteins Pepsin  →  Amino acids (b) Stomach : Fats Lipase  →  Micelles (c) Duodenum : Triglycerides Trypsin  →  Monoglycerides (d) Small intestine : Starch α-Amylase  →  Disaccharide (maltose)

Description : Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product? (a) Small intestine : Proteins Pepsin  →  ... Trypsin  →  Monoglycerides (d) Small intestine : Starch α-Amylase  →  Disaccharide (maltose)

Last Answer : (d) Small intestine : Starch α-Amylase  →  Disaccharide

.All plastids have similar structure because they can (a) store starch, lipids and proteins (b) get transformed from one type to another (c) perform same function (d) be present together.

Description : .All plastids have similar structure because they can (a) store starch, lipids and proteins (b) get transformed from one type to another (c) perform same function (d) be present together.

Last Answer : (b) get transformed from one type to another

The aleurone layer in maize grain is specially rich in (a) proteins (b) starch (c) lipids (d) auxins.

Description : The aleurone layer in maize grain is specially rich in (a) proteins (b) starch (c) lipids (d) auxins.

Last Answer : (a) proteins

Iodine solution is used to test the presence of (1) Sugar (2) Proteins (3) Starch (4) Fats

Description : Iodine solution is used to test the presence of (1) Sugar (2) Proteins (3) Starch (4) Fats

Last Answer : Starch

The saliva helps in the digestion of (1) Proteins (2) Starch (3) Fibres (4) Fats

Description : The saliva helps in the digestion of (1) Proteins (2) Starch (3) Fibres (4) Fats

Last Answer : Starch

The sailva secreted in the mouth digests (1) Proteins (2) Starch (3) Fats (4) Vitamins

Description : The sailva secreted in the mouth digests (1) Proteins (2) Starch (3) Fats (4) Vitamins

Last Answer : Starch

Saliva helps in the digestion of : (1) Fats (2) Starch (3) Proteins (4) Vitamins

Description : Saliva helps in the digestion of : (1) Fats (2) Starch (3) Proteins (4) Vitamins

Last Answer : Starch

Which plastid of cell is responsible for storage of starch and fat in plants?

Description : Which plastid of cell is responsible for storage of starch and fat in plants?

Last Answer : Ans. Leucoplast

What happens during seed germination? (a) Heat is liberated (b) Starch is synthesised (c) Fat is synthesised (d) Light is absorbed

Description : What happens during seed germination? (a) Heat is liberated (b) Starch is synthesised (c) Fat is synthesised (d) Light is absorbed

Last Answer : Ans:(a)

Plants have ____________ while animals lack it. (a) Starch (b) Cellulose (c) Protein (d) Fat

Description : Plants have ____________ while animals lack it. (a) Starch (b) Cellulose (c) Protein (d) Fat

Last Answer : Ans:(b)

Pick out the correct match: (1) Fleshy foods-Calcium and Protein (2) Fish - Starch and Vitamin (3) Milk Fibre and Minerals (4) Egg yolk Protein and Fat

Description : Pick out the correct match: (1) Fleshy foods-Calcium and Protein (2) Fish - Starch and Vitamin (3) Milk Fibre and Minerals (4) Egg yolk Protein and Fat

Last Answer : (4) Egg yolk Protein and Fat Explanation: An egg yolk is a part of an egg which feeds the developing embryo. As a food, yolks are a major source of vitamins and minerals. They contain all of the egg's fat and cholesterol, and about one-half of the protein.

Which of the following is correct pairing of site of action and substrate of rennin? (a) Mouth - Starch (b) Small intestine - Protein (c) Stomach - Casein (d) Stomach - Fat

Description : Which of the following is correct pairing of site of action and substrate of rennin? (a) Mouth - Starch (b) Small intestine - Protein (c) Stomach - Casein (d) Stomach - Fat

Last Answer : (c) Stomach - Casein

Which one of the following pairs of food components in humans reaches the stomach totally undigested ? (a) Starch and fat (b) Fat and cellulose (c) Starch and cellulose (d) Protein and starch

Description : Which one of the following pairs of food components in humans reaches the stomach totally undigested ? (a) Starch and fat (b) Fat and cellulose (c) Starch and cellulose (d) Protein and starch

Last Answer : b) Fat and cellulose

All types of plastids possess essentially the same structure because they (a) perform the same function (b) store food materials like starch, fat and protein (c) occur in aerial parts (d) can transform from one form to another

Description : All types of plastids possess essentially the same structure because they (a) perform the same function (b) store food materials like starch, fat and protein (c) occur in aerial parts (d) can transform from one form to another

Last Answer : (d) can transform from one form to another.