Sperms produce an enzymatic substance or lysin for dissolving egg coverings. It is called

Sperms produce an enzymatic substance or lysin for dissolving egg coverings. It is called
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Sperms produce an enzymatic substance or lysin for dissolving egg coverings. It is called A. ... B. hyaluronidase C. Androgamone D. Diastase.
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The sperm producing substance of enzymatic nature of sperm lysine. In mammals it is called

Description : The sperm producing substance of enzymatic nature of sperm lysine. In mammals it is called

Last Answer : The sperm producing substance of enzymatic nature of sperm lysine. In mammals it is called A. ... B. Hyaluronic acid C. Androgamone D. Gyanogamone

Assertion : The acrosomal secretions of sperm , help it in entering in the cytoplasm of the ovum . Reason : It contains sperm lysin .

Description : Assertion : The acrosomal secretions of sperm , help it in entering in the cytoplasm of the ovum . Reason : It contains sperm lysin .

Last Answer : Assertion : The acrosomal secretions of sperm , help it in entering in the cytoplasm of the ovum . ... . D. If both Assertion & Reason are False.

Acrosome reaction in sperm is triggered by (a) capacitation (b) release of lysin (c) influx of Na+ (d) release of fertilizin.

Description : Acrosome reaction in sperm is triggered by (a) capacitation (b) release of lysin (c) influx of Na+ (d) release of fertilizin.

Last Answer : (c) total

. Select the incorrect statement. (a) Human males have one of their sex-chromosome much shorter than other. (b) Male fruit fly is heterogametic. (c) In male grasshoppers, 50% of sperms have no sex-chromosome. (d) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.

Description : . Select the incorrect statement. (a) Human males have one of their sex-chromosome much shorter than other. (b) Male fruit fly is heterogametic. (c) In male grasshoppers, 50% of sperms have no sex-chromosome. (d) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.

Last Answer : (d) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.

In gymnosperms, the pollen chamber represents (a) a cavity in the ovule in which pollen grains are stored after pollination (b) an opening in the megagametophyte through which the pollen tube approaches the egg(c) the microsporangium in which pollen grains develop (d) a cell in the pollen grain in which the sperms are formed.

Description : In gymnosperms, the pollen chamber represents (a) a cavity in the ovule in which pollen grains are stored after pollination (b) an opening in the megagametophyte through which the pollen tube approaches the ... pollen grains develop (d) a cell in the pollen grain in which the sperms are formed.

Last Answer : (c) the microsporangium in which pollen grains develop

Bryophytes are dependent on water, because (a) water is essential for their vegetative propagation (b) the sperms can easily reach upto egg in the archegonium (c) archegonium has to remain filled with water for fertilization (d) water is essential for fertilization for their homosporous nature.

Description : Bryophytes are dependent on water, because (a) water is essential for their vegetative propagation (b) the sperms can easily reach upto egg in the archegonium (c) archegonium has to remain filled with water for fertilization (d) water is essential for fertilization for their homosporous nature.

Last Answer : (b) the sperms can easily reach upto egg in the archegonium

Set of reproductive terms are given below . Choose the set that has incorrect combination a ) sperms ,testis, sperm duct ,penis b)menstruation, egg, oviduct ,uterus c) sperm, oviduct, egg, uterus d)ovulation, egg, oviduct , uterus

Description : Set of reproductive terms are given below . Choose the set that has incorrect combination a ) sperms ,testis, sperm duct ,penis b)menstruation, egg, oviduct ,uterus c) sperm, oviduct, egg, uterus d)ovulation, egg, oviduct , uterus

Last Answer : c) sperm, oviduct, egg, uterus

The technique called Gamete Intra Fallopian Transfer (GIFT) is recommended for those females (a) who cannot produce an ovum (b) who cannot retain the fetus inside uterus (c) whose cervical canal is too narrow to allow passage for the sperms (d) who cannot provide suitable environment for fertilisation.

Description : The technique called Gamete Intra Fallopian Transfer (GIFT) is recommended for those females (a) who cannot produce an ovum (b) who cannot retain the fetus inside uterus (c) whose cervical ... narrow to allow passage for the sperms (d) who cannot provide suitable environment for fertilisation.

Last Answer : (a) who cannot produce an ovum

In spermatogenesis, a primary spermatocyta produce four similar sperms while in oognesis a primary oocyte forms

Description : In spermatogenesis, a primary spermatocyta produce four similar sperms while in oognesis a primary oocyte forms

Last Answer : In spermatogenesis, a primary spermatocyta produce four similar sperms while in oognesis a primary oocyte ... One large ovum and 2-3 polar bodies.

Assertion:- Centrosome does not show any kind of compartmentalisation of all cytoplasm. Reason:- Centrosome is devoid of membranous coverings.

Description : Assertion:- Centrosome does not show any kind of compartmentalisation of all cytoplasm. Reason:- Centrosome is devoid of membranous coverings.

Last Answer : Assertion:- Centrosome does not show any kind of compartmentalisation of all cytoplasm. Reason:- ... . If both Assertion & Reason are false.

What rhymes head coverings for small insects?

Description : What rhymes head coverings for small insects?

Last Answer : Need answer

What is the body coverings of a squirrel?

Description : What is the body coverings of a squirrel?

Last Answer : Need answer

Coast Guard Regulations (46 CFR) require each switchboard to have ___________. A. non-conductive deck covering at the frount B. non-conductive deck coverings at the rear C. a name plate for each circuit breaker D. all the above

Description : Coast Guard Regulations (46 CFR) require each switchboard to have ___________. A. non-conductive deck covering at the frount B. non-conductive deck coverings at the rear C. a name plate for each circuit breaker D. all the above

Last Answer : Answer: D

Which of the following statements concerning electrical cables is correct? A. Where they pass through watertight bulkheads, they should be fitted with watertight stuffing boxes. B. Electric cable coverings should never be grounded. C. Electrical cables must be rigidly held in place by welding of armored cable, or glued in place where nonmetallic insulation is used. D. All of the above.

Description : Which of the following statements concerning electrical cables is correct? A. Where they pass through watertight bulkheads, they should be fitted with watertight stuffing boxes. B. Electric cable coverings should ... , or glued in place where nonmetallic insulation is used. D. All of the above.

Last Answer : Answer: A

How many categories of nonmetallic protective coverings are there?

Description : How many categories of nonmetallic protective coverings are there?

Last Answer : Three

Floor coverings. How to choose a carpet?

Description : Floor coverings. How to choose a carpet?

Last Answer : Floor coverings. How to choose a carpet? In all the abundance of floor coverings, perhaps only professional finishers will be able to figure it out. Different materials are suitable ... regularly. When choosing a completely artificial carpet, the question of allergenicity disappears by itself.

The energy required to start an enzymatic reaction is called (A) Chemical energy (B) Metabolic energy (C) Activation energy (D) Potential energy

Description : The energy required to start an enzymatic reaction is called (A) Chemical energy (B) Metabolic energy (C) Activation energy (D) Potential energy

Last Answer : Answer : C

The solution made by dissolving Salt (NaOH) in water is called as

Description : The solution made by dissolving Salt (NaOH) in water is called as

Last Answer : Ans. Brine solution

The formation of pockets of gas in a liquid is called: w) absorption x) cavitation y) adsorption z) dissolving

Description : The formation of pockets of gas in a liquid is called: w) absorption x) cavitation y) adsorption z) dissolving

Last Answer : ANSWER: X -- CAVITATION

Chemical reaction vs enzymatic reaction -Biology

Description : Chemical reaction vs enzymatic reaction -Biology

Last Answer : answer:

What is the enzymatic function of restriction enzymes? -Biology

Description : What is the enzymatic function of restriction enzymes? -Biology

Last Answer : answer:

Enzymatic filters are used for removing

Description : Enzymatic filters are used for removing

Last Answer : Enzymatic filters are used for removing A. Nitrogen pollutants B. Chloride pollutants C. Hydrocarbons D. Lead

Assertion : Dark reactions of photosynthesis are temperauture -controlled processes. Reason : Most of the reactions are enzymatic in nature.

Description : Assertion : Dark reactions of photosynthesis are temperauture -controlled processes. Reason : Most of the reactions are enzymatic in nature.

Last Answer : Assertion : Dark reactions of photosynthesis are temperauture -controlled processes. Reason : Most of the ... If both Assertion and Reason are false.

All living organisms retain the enzymatic machinery to partially oxidise glucose without the help of oxygen. This breakdown of glucose to pyruvic acid

Description : All living organisms retain the enzymatic machinery to partially oxidise glucose without the help of oxygen. This breakdown of glucose to pyruvic acid

Last Answer : All living organisms retain the enzymatic machinery to partially oxidise glucose without the help of oxygen ... of glucose to pyruvic acid is called.

All living organisms retain the enzymatic machinery to partially oxidise glucose without the help of oxygen. This breakdown of glucose to pyruvic acid

Description : All living organisms retain the enzymatic machinery to partially oxidise glucose without the help of oxygen. This breakdown of glucose to pyruvic acid

Last Answer : All living organisms retain the enzymatic machinery to partially oxidise glucose without the help of oxygen ... of glucose to pyruvic acid is called.

Feedback term refers to (A) Effect of substrate on rate of enzymatic reaction (B) Effect of end product on rate reaction (C) Effect of enzyme concentration on rate of reaction (D) Effect of external compound on rate of reaction

Description : Feedback term refers to (A) Effect of substrate on rate of enzymatic reaction (B) Effect of end product on rate reaction (C) Effect of enzyme concentration on rate of reaction (D) Effect of external compound on rate of reaction

Last Answer : Answer : B

A protein having both structural and enzymatic traits is (A) Myosin (B) Collagen (C) Trypsin (D) Actin

Description : A protein having both structural and enzymatic traits is (A) Myosin (B) Collagen (C) Trypsin (D) Actin

Last Answer : Answer : A

When the velocity of an enzymatic reaction equals Vmax, substrate concentration is (A) Half of Km (B) Equal to Km (C) Twice the Km (D) Far above the Km

Description : When the velocity of an enzymatic reaction equals Vmax, substrate concentration is (A) Half of Km (B) Equal to Km (C) Twice the Km (D) Far above the Km

Last Answer : Answer : D

The fatty acid synthase complex catalyses (A) 4 sequential enzymatic steps (B) 6 sequential enzymatic steps (C) 7 sequential enzymatic steps (D) 8 sequential enzymatic steps

Description : The fatty acid synthase complex catalyses (A) 4 sequential enzymatic steps (B) 6 sequential enzymatic steps (C) 7 sequential enzymatic steps (D) 8 sequential enzymatic steps

Last Answer : Answer : B

Isoenzymes can be characterized by (A) Proteins lacking enzymatic activity that are necessary for the activation of enzymes (B) Proteolytic enzymes activated by hydrolysis (C) Enzymes with identical primary structure (D) Similar enzymes that catalyse different reaction

Description : Isoenzymes can be characterized by (A) Proteins lacking enzymatic activity that are necessary for the activation of enzymes (B) Proteolytic enzymes activated by hydrolysis (C) Enzymes with identical primary structure (D) Similar enzymes that catalyse different reaction

Last Answer : Answer : B

The following ions help in enzymatic transfer of phosphate from ATP to pyruvic acid: (A) Sodium (B) Calcium (C) Magnesium (D) Potassium

Description : The following ions help in enzymatic transfer of phosphate from ATP to pyruvic acid: (A) Sodium (B) Calcium (C) Magnesium (D) Potassium

Last Answer : Answer : D

Consider the following statements associated with the germination of an angiospermous seed: (1) As the seed gets hydrated and germinates, enzymatic activity is increased (2) The respiration rate of the germinating seed increases along with the increased enzymatic activity (3) The increase in the respiratory rate continues till senescence (4) Rate of enzymatic activity decreases

Description : Consider the following statements associated with the germination of an angiospermous seed: (1) As the seed gets hydrated and germinates, enzymatic activity is increased (2) The respiration ... The increase in the respiratory rate continues till senescence (4) Rate of enzymatic activity decreases

Last Answer : Ans. ((b))

Ribozyme is: (a) enzyme (b) RNA with enzymatic activity (c) Hormone (d) Protein

Description : Ribozyme is: (a) enzyme (b) RNA with enzymatic activity (c) Hormone (d) Protein

Last Answer : Ans. ((b))

How does facilitated diffusion present similarities with enzymatic chemical reactions ?

Description : How does facilitated diffusion present similarities with enzymatic chemical reactions ?

Last Answer : One of the main examples of facilitated transport is the entrance of glucose from the blood into cells. Glucose from blood binds to specific permeases (hexose-transporting permeases) present in the ... job is concluded the permease is not consumed and can perform successive other transports.

Explain in brief about leukotrienes and prostaglandins Leukotrienes and prostaglandins are formed only when the mast cell undergo degranulation and enzymatic break down of phospholipids in the plasma membrane ?

Description : Explain in brief about leukotrienes and prostaglandins Leukotrienes and prostaglandins are formed only when the mast cell undergo degranulation and enzymatic break down of phospholipids in the plasma membrane ?

Last Answer : The effects produced by them are more pronounced and long lasting than histamine. Leukotrienes mediate mucous production and bronchoconstriction. Prostaglandin D2 causes bronchoconstriction.

The saliva pH is approximately 6.8. It is thus a slightly acid pH. Saliva lubricates the food bolus and initiates the enzymatic extracellular digestion of food. It also works as a buffer for the mouth pH and it has an important role of having IgA antibodies (also present in tears, colostrum, mother’s milk and in the mucosae of the intestine and airways) that protect the organism against pathogens.

Description : The saliva pH is approximately 6.8. It is thus a slightly acid pH. Saliva lubricates the food bolus and initiates the enzymatic extracellular digestion of food. It also works as a buffer for the ... 's milk and in the mucosae of the intestine and airways) that protect the organism against pathogens.

Last Answer : What is the salivary digestive enzyme? Which type of food does it digest and into which smaller molecules does it transform the food?

Chemical digestion is the series of enzymatic reactions to break macromolecules into smaller ones.

Description : Chemical digestion is the series of enzymatic reactions to break macromolecules into smaller ones.

Last Answer : Which type of chemical reaction is the breaking of macromolecules into smaller ones that occurs in digestion? What are the enzymes that participate in this process called?

Which factor is responsible for inhibition of enzymatic process during feedback? (a) Substrate (b) Enzymes (c) End product (d) Temperature

Description : Which factor is responsible for inhibition of enzymatic process during feedback? (a) Substrate (b) Enzymes (c) End product (d) Temperature

Last Answer : (c) End product

The curve given below shows enzymatic activity in relation to three conditions (pH, temperature and substrate concentration). What do the two axes (X and Y) represent? X-axis Y-axis (a) Enzymatic activity pH (b) Temperature Enzyme activity (c) Substrate Enzymatic concentration activity (d) Enzymatic activity Temperature

Description : The curve given below shows enzymatic activity in relation to three conditions (pH, temperature and substrate concentration). What do the two axes (X and Y) represent? X-axis ... (b) Temperature Enzyme activity (c) Substrate Enzymatic concentration activity (d) Enzymatic activity Temperature

Last Answer : (b) Temperature Enzyme activity

Transition state structure of the substrate formed during an enzymatic reaction is (a) transient and unstable (b) permanent and stable (c) transient but stable (d) permanent but unstable.

Description : Transition state structure of the substrate formed during an enzymatic reaction is (a) transient and unstable (b) permanent and stable (c) transient but stable (d) permanent but unstable.

Last Answer : (a) transient and unstable

The function of a viral capsid isA.protection against the viral genome from physical and enzymatic destruction B.providing binding sites that enable the virus to attach to specific receptor sites on the host cell C.serving as a vehicle of transmission from one host to another D.all of the above

Description : The function of a viral capsid is A.protection against the viral genome from physical and enzymatic destruction B.providing binding sites that enable the virus to attach to specific receptor sites on the host ... C.serving as a vehicle of transmission from one host to another D.all of the above

Last Answer : D.all of the above

If the Keq for an enzymatic reaction is greater than 1, the reaction A- will be endergonic B- can not occur without the input of energy C- both (a) and (b) D- none of these

Description : If the Keq for an enzymatic reaction is greater than 1, the reaction A- will be endergonic B- can not occur without the input of energy C- both (a) and (b) D- none of these

Last Answer : none of these

During which step of cellular carcinogenesis do cellular changes exhibit increased malignant behavior? a) Progression During this third step, cells show a propensity to invade adjacent tissues and metastasize. b) Promotion During promotion, repeated exposure to promoting agents causes the expression of abnormal genetic information even after long latency periods. c) Initiation During this first step, initiators such as chemicals, physical factors, and biologic agents escape normal enzymatic mechanisms and alter the genetic structure of cellular DNA. d) Prolongation No stage of cellular carcinogenesis is termed prolongation.

Description : During which step of cellular carcinogenesis do cellular changes exhibit increased malignant behavior? a) Progression During this third step, cells show a propensity to invade adjacent tissues and ... of cellular DNA. d) Prolongation No stage of cellular carcinogenesis is termed prolongation.

Last Answer : a) Progression During this third step, cells show a propensity to invade adjacent tissues and metastasize.

An enzymatic beta-oxidation process a). Conjugation b). Reverse metabolism c). Translocation d). Metabolism

Description : An enzymatic beta-oxidation process a). Conjugation b). Reverse metabolism c). Translocation d). Metabolism

Last Answer : b). Reverse metabolism

A receptor which itself has enzymatic property is: A. Insulin receptor B. Progesterone receptor C. Thyroxine receptor D. Glucagon receptor

Description : A receptor which itself has enzymatic property is: A. Insulin receptor B. Progesterone receptor C. Thyroxine receptor D. Glucagon receptor

Last Answer : A. Insulin receptor

A receptor which itself has enzymatic property is: A. Insulin receptor B. Progesterone receptor C. Thyroxine receptor D. Glucagon receptor

Description : A receptor which itself has enzymatic property is: A. Insulin receptor B. Progesterone receptor C. Thyroxine receptor D. Glucagon receptor

Last Answer : A. Insulin receptor

In the mammalian body, this element plays many important roles. Try to identify this element with the fewest number of clues. This element is required to insure the integrity and permeability of cell membranes, to regulate nerve and muscle excitability, to help maintain normal muscular contraction, and to assure cardiac rhythmicity. It also plays a essential role in several of the enzymatic steps involved in blood coagulation and is the most important element of bone salt. Name this element.

Description : In the mammalian body, this element plays many important roles. Try to identify this element with the fewest number of clues. This element is required to insure the integrity and permeability of ... involved in blood coagulation and is the most important element of bone salt. Name this element.

Last Answer : ANSWER: Calcium 

How does dissolving a salt molecule in water make its atoms ionize? -Space

Description : How does dissolving a salt molecule in water make its atoms ionize? -Space

Last Answer : When salt is mixed with water, the salt dissolves because the covalent bonds of water are stronger than the ionic bonds in the salt molecules. Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together.

After dissolving 0.25 kg of salt in 1 kg of water, its volume becomes 1200 cc. What is the concentration of solution ?

Description : After dissolving 0.25 kg of salt in 1 kg of water, its volume becomes 1200 cc. What is the concentration of solution ?

Last Answer : We know , 1 cc = 1cm ^ 3 = (10 ^ -6) m ^ 3 Density of salt water = (1 + 0.25) / (1200 × 10 ^ - ৬) = 1.04 kg / (m 3)