The chemicals released by one species of animals in order to attract the other members of the same species are - (1) Hormones (2) Nucleic acids (3) Pheromones (4) Steroids

The chemicals released by one species of animals in order to attract the other members of the same species are - (1) Hormones (2) Nucleic acids (3) Pheromones (4) Steroids
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(3) Pheromones Explanation: A pheromone is a secreted or excreted chemical factor that triggers a social response in members of the same species. Pheromones are chemicals capable of acting outside the body of-the secreting individual to impact the behavior of the receiving individual. There are alarm pheromones, food trail pheromones, sex pheromones, and many others that affect behavior or physiology. Their use among insects has been particularly well documented.
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The chemicals released by one species of animals in order to attract the other members of the same species are (1) Hormones (2) Nucleic acids (3) Pheromones (4) Steroids

Description : The chemicals released by one species of animals in order to attract the other members of the same species are (1) Hormones (2) Nucleic acids (3) Pheromones (4) Steroids

Last Answer : Pheromones

Hormones are composed from many classes of molecules. As far as our present knowledge extends, hormones are NOT found in which of the following categories of substances: a) proteins b) peptides c) nucleic acids d) steroids

Description : Hormones are composed from many classes of molecules. As far as our present knowledge extends, hormones are NOT found in which of the following categories of substances: a) proteins b) peptides c) nucleic acids d) steroids

Last Answer : ANSWER: C -- NUCLEIC ACIDS 

Cholesterol, testosterone, and estrogen are all examples of: a) proteins b) steroids c) nucleic acids d) alcohols

Description : Cholesterol, testosterone, and estrogen are all examples of: a) proteins b) steroids c) nucleic acids d) alcohols

Last Answer : ANSWER: B -- STEROIDS 

Which of the following is NOT true about hormones? A) Hormones are secreted into the bloodstream. B) Hormones are released from exocrine glands. C) Hormones may be classified as peptides or steroids. D) Hormones usually affect a target organ. E) Cells that react to a hormone have specific receptors for that hormone.

Description : Which of the following is NOT true about hormones? A) Hormones are secreted into the bloodstream. B) Hormones are released from exocrine glands. C) Hormones may be classified as peptides or steroids. ... a target organ. E) Cells that react to a hormone have specific receptors for that hormone.

Last Answer : B) Hormones are released from exocrine glands.

Hormones which function in sending chemical signal between two or more individuals are known as: a) leucomones b) pheromones (pron: fair-oh-moans) c) comones

Description : Hormones which function in sending chemical signal between two or more individuals are known as: a) leucomones b) pheromones (pron: fair-oh-moans) c) comones

Last Answer : ANSWER: B -- PHEROMONES

Lysosomes are rich in (a) nucleic acids (b) hydrolytic enzymes (c) carbohydrates (d) hormones.

Description : Lysosomes are rich in (a) nucleic acids (b) hydrolytic enzymes (c) carbohydrates (d) hormones.

Last Answer : (b) hydrolytic enzymes

Chemically hormones are (a) biogenic amines only (b) proteins, steroids and biogenic amines (c) proteins only (d) steroids only.

Description : Chemically hormones are (a) biogenic amines only (b) proteins, steroids and biogenic amines (c) proteins only (d) steroids only.

Last Answer : (b) proteins, steroids and biogenic amines

_____posses very simple endocrine systems with few hormones whereas a large number of chemicals act as hormones and provide coordination in theh _____

Description : _____posses very simple endocrine systems with few hormones whereas a large number of chemicals act as hormones and provide coordination in theh _____

Last Answer : _____posses very simple endocrine systems with few hormones whereas a large number of chemicals act as hormones and provide coordination in theh _____

Which of the following statements is correct in relation to the endocrine system? (a) Non-nutrient chemicals produced by the body in trace amounts that act as intercellular messenger are known as hormones. (b) Releasing and inhibitory hormones are produced by the pituitary gland. (c) Adenohypophysis is under direct neural regulation of the hypothalamus. (d) Organs in the body like gastrointestinal tract, heart, kidney and liver do not produce any hormones.

Description : Which of the following statements is correct in relation to the endocrine system? (a) Non-nutrient chemicals produced by the body in trace amounts that act as intercellular messenger are known as ... in the body like gastrointestinal tract, heart, kidney and liver do not produce any hormones.

Last Answer : (a) Non-nutrient chemicals produced by the body in trace amounts that act as intercellular messenger are known as hormones.

Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these (a) help in regulating metabolism (b) are exclusively synthesized in the body of a living organism as at present (c) are conjugated proteins (d) enhance oxidative metabolism.

Description : Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these (a) help in regulating metabolism (b) are exclusively synthesized in the body of a living organism as at present (c) are conjugated proteins (d) enhance oxidative metabolism.

Last Answer : (a) help in regulating metabolism

Which statement is NOT true about non-steroid (peptide) hormones? A) They are derived from peptides, proteins, polypeptides, and derivatives of amino acids. B) They bind to receptors on the cell surface. C) They form cyclic AMP inside the cell. D) They create an enzyme cascade effect. E) They enter the cell in order to have an effect.

Description : Which statement is NOT true about non-steroid (peptide) hormones? A) They are derived from peptides, proteins, polypeptides, and derivatives of amino acids. B) They bind to receptors on the cell surface. ... They create an enzyme cascade effect. E) They enter the cell in order to have an effect.

Last Answer : E) They enter the cell in order to have an effect.

Sperms of both Funaria and Pteris were released together near the archegonia of Pteris. Only its sperms enter the archegonia as (a) Pteris archegonia repel Funaria sperms (b) Funaria sperms get killed by Pteris sperms (c) Funaria sperms are less mobile (d) Pteris archegonia release chemical to attract its sperms.

Description : Sperms of both Funaria and Pteris were released together near the archegonia of Pteris. Only its sperms enter the archegonia as (a) Pteris archegonia repel Funaria sperms (b) Funaria sperms get ... (c) Funaria sperms are less mobile (d) Pteris archegonia release chemical to attract its sperms.

Last Answer : (d) Pteris archegonia release chemical to attract its sperms.

[SFW] Do you believe there are human pheromones?

Description : [SFW] Do you believe there are human pheromones?

Last Answer : Sure.

Is it true that pheromones/chemistry have more impact on attraction than physical appearances?

Description : Is it true that pheromones/chemistry have more impact on attraction than physical appearances?

Last Answer : answer:I don't think so. Pheromones probably used to have a stronger effect long ago when humans resembled animals more in terms of their actions. ie. when humans used to hunt for ... sweat is subconsciously attractive because it contains lots of pheromones apparently.. Not the smelly one, though.

The male Japanese beetle breaks down female pheromones. What structure inside the cell of the male beetle breaks down the pheromone?

Description : The male Japanese beetle breaks down female pheromones. What structure inside the cell of the male beetle breaks down the pheromone?

Last Answer : Lysosomes (Apex)

Biological control component is central to advanced agricultural production. Which of the following is used as a third generation pesticide? (a) Insect repellants (b) Organophosphate and carbamates (c) Pathogens (d) Pheromones

Description : Biological control component is central to advanced agricultural production. Which of the following is used as a third generation pesticide? (a) Insect repellants (b) Organophosphate and carbamates (c) Pathogens (d) Pheromones

Last Answer : (d) Pheromones

An example of an environmental signal that acts at a distance between individuals is A) insulin. B) cortisol. C) pheromones. D) prostaglandins. E) nerve growth factor.

Description : An example of an environmental signal that acts at a distance between individuals is A) insulin. B) cortisol. C) pheromones. D) prostaglandins. E) nerve growth factor.

Last Answer : C) pheromones.

What is the function of the nucleic acids?

Description : What is the function of the nucleic acids?

Last Answer : A: The nucleic acids, DNA and RNA, are responsible for storing and transmitting genetic information.

Write short notes on nucleic acids. -Biology

Description : Write short notes on nucleic acids. -Biology

Last Answer : answer:

List nucleic acids with their molecular weights. -Biology

Description : List nucleic acids with their molecular weights. -Biology

Last Answer : answer:

Buildings blocks of nucleic acids are? -Biology

Description : Buildings blocks of nucleic acids are? -Biology

Last Answer : answer:

How many types of nucleic acids and what are they ?

Description : How many types of nucleic acids and what are they ?

Last Answer : Answer : There are two types of nucleic acid .

Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by `:`

Description : Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by `:`

Last Answer : Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by `:` ... -phosphate")_(n)` D. sugar-phosphate.

What are nucleic acids from when long chains of molecules called?

Description : What are nucleic acids from when long chains of molecules called?

Last Answer : Need answer

What about some bacteria is important to important to humans in terms of our being able to make proteins and nucleic acids from the foods we eat?

Description : What about some bacteria is important to important to humans in terms of our being able to make proteins and nucleic acids from the foods we eat?

Last Answer : Feel Free to Answer

Nucleic acids can be detected by means of their absorption maxima near 260 nm. Their absorption in this range is due to (A) Proteins (B) Purines and pyrimidines (C) Ribose (D) Deoxyribose

Description : Nucleic acids can be detected by means of their absorption maxima near 260 nm. Their absorption in this range is due to (A) Proteins (B) Purines and pyrimidines (C) Ribose (D) Deoxyribose

Last Answer : Answer : B

Nucleotides required for the synthesis of nucleic acids can be obtained from (A) Dietary nucleic acids and nucleotides (B) De novo synthesis (C) Salvage of pre-existing bases and nucleosides (D) De novo synthesis and salvage

Description : Nucleotides required for the synthesis of nucleic acids can be obtained from (A) Dietary nucleic acids and nucleotides (B) De novo synthesis (C) Salvage of pre-existing bases and nucleosides (D) De novo synthesis and salvage

Last Answer : Answer : D

Nucleotides and nucleic acids concentration are often also expressed in terms of (A) ng (B) mg (C) meq (D) OD at 260 nm

Description : Nucleotides and nucleic acids concentration are often also expressed in terms of (A) ng (B) mg (C) meq (D) OD at 260 nm

Last Answer : Answer : D

Across a membrane phospholipids act as carrier of (A) Organic compounds (B) Inorganic ions (C) Nucleic acids (D) Food materials

Description : Across a membrane phospholipids act as carrier of (A) Organic compounds (B) Inorganic ions (C) Nucleic acids (D) Food materials

Last Answer : Answer : B

Maximum energy produced by (A) Fats (B) Carbohydrates (C) Proteins (D) Nucleic acids

Description : Maximum energy produced by (A) Fats (B) Carbohydrates (C) Proteins (D) Nucleic acids

Last Answer : Answer : A

For biosynthesis of proteins (A) Amino acids only are required (B) Amino acids and nucleic acids only are required (C) Amino acid, nucleic acids and ATP only are required (D) Amino acids, nucleic acids, ATP, GTP, enzymes and activators are required

Description : For biosynthesis of proteins (A) Amino acids only are required (B) Amino acids and nucleic acids only are required (C) Amino acid, nucleic acids and ATP only are required (D) Amino acids, nucleic acids, ATP, GTP, enzymes and activators are required

Last Answer : Answer : D

Nucleic acids were first discovered by

Description : Nucleic acids were first discovered by

Last Answer : Ans. Friedrich Meischer (1868)

Which of the following statement(s) is/are true concerning translation of the mRNA message to protein synthesis? a. An adaptor molecule, tRNA, recognizes specific nucleic acid bases and unites them with specific amino acids b. Covalent attachment of tRNA to amino acids is energy dependent c. The formation of a peptide bond between the growing peptide chain and the free amino acid occurs in the free cytoplasm d. Complete protein synthesis takes hours

Description : Which of the following statement(s) is/are true concerning translation of the mRNA message to protein synthesis? a. An adaptor molecule, tRNA, recognizes specific nucleic acid bases and unites them ... and the free amino acid occurs in the free cytoplasm d. Complete protein synthesis takes hours

Last Answer : Answer: a, b The synthesis of protein involves conversion from a four-letter nucleotide language to one of 20 chemically distinct amino acids. This process is referred to as ... translation and be moving down the mRNA molecules simultaneously, thus increasing the rate of protein synthesis

Phosphorous is an essential component of a. Nucleotides b. Nucleic acids c. Phospholipids and Heichoic acids d. All the above

Description : Phosphorous is an essential component of a. Nucleotides b. Nucleic acids c. Phospholipids and Heichoic acids d. All the above

Last Answer : Ans: D

Substances containing all the four elements: carbon, hydrogen nitrogen and oxygen are 1. Morphine 2. Nucleic acids 3. Starch 4. Quinine Select the correct answer by using the code below, (a) 2, 3 and 4 only (b) 1, 2 and 4 only (c) 1, 2, 3 and 4 (d) 1, 2 and 3 only

Description : Substances containing all the four elements: carbon, hydrogen nitrogen and oxygen are 1. Morphine 2. Nucleic acids 3. Starch 4. Quinine Select the correct answer by using the code below, (a) 2, 3 and 4 only (b) 1, 2 and 4 only (c) 1, 2, 3 and 4 (d) 1, 2 and 3 only

Last Answer : Ans:(b)

Enzymes are (a) Carbohydrates (b) Proteins (c) Fatty acids (d) Nucleic acids

Description : Enzymes are (a) Carbohydrates (b) Proteins (c) Fatty acids (d) Nucleic acids

Last Answer : Ans:(b)

Some viruses have RNA but no DNA. This would indicate that – (1) these viruses cannot replicate (2) these viruses have no heritable information (3) RNA transmits the hereditary information in these viruses (4) their nucleic acids can be crystallised

Description : Some viruses have RNA but no DNA. This would indicate that – (1) these viruses cannot replicate (2) these viruses have no heritable information (3) RNA transmits the hereditary information in these viruses (4) their nucleic acids can be crystallised

Last Answer : (2) these viruses have no heritable information Explanation: DNA is an informational molecule encoding the genetic instructions Along with RNA and proteins, it is one of the three major macromolecules that are ... guanine, adenine, thymine, and cytosine) recorded using the letters G, A, T, and C.

Which of the following is not a natural polymer? (A) Nucleic acids e.g. RNA and DNA (B) Polysaccharides (C) Polyisoprene (D) Polyurethane

Description : Which of the following is not a natural polymer? (A) Nucleic acids e.g. RNA and DNA (B) Polysaccharides (C) Polyisoprene (D) Polyurethane

Last Answer : (D) Polyurethane

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

Nucleic acids are unique among the biopolymers in that they contain phosphate. How has this property been exploited experimentally in studies

Description : Nucleic acids are unique among the biopolymers in that they contain phosphate. How has this property been exploited experimentally in studies of protein synthesis?

Last Answer : The use of 32P (radioactive) to label DNA and RNA for Southern and northern blotting was a major technical advance. One of the earliest exploitations of the unique phosphorus content of nucleic ... machinery to direct the synthesis of many copies of the virus, eventually leading to host cell.  

Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it? (a) Guanine, Adenine - Purines (b) Adenine, Thymine - Purines (c) Thymine, Uracil - Pyrimidines (d) Uracil, Cytosine - Pyrimidines

Description : Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it? (a) Guanine, Adenine - Purines (b) Adenine, Thymine - Purines (c) Thymine, Uracil - Pyrimidines (d) Uracil, Cytosine - Pyrimidines

Last Answer : (b) Adenine, Thymine - Purines

Nissl’s bodies are mainly composed of (a) proteins and lipids (b) DNA and RNA (c) nucleic acids and SER (d) free ribosomes and RER.

Description : Nissl’s bodies are mainly composed of (a) proteins and lipids (b) DNA and RNA (c) nucleic acids and SER (d) free ribosomes and RER.

Last Answer : (d) free ribosomes and RER.

The overall goal of glycolysis, Krebs’ cycle and the electron transport system is the formation of (a) ATP in one large oxidation reaction (b) sugars (c) nucleic acids (d) ATP in small stepwise units

Description : The overall goal of glycolysis, Krebs’ cycle and the electron transport system is the formation of (a) ATP in one large oxidation reaction (b) sugars (c) nucleic acids (d) ATP in small stepwise units

Last Answer : d) ATP in small stepwise units.

The essential chemical components of many coenzymes are (a) carbohydrates (b) vitamins (c) proteins (d) nucleic acids.

Description : The essential chemical components of many coenzymes are (a) carbohydrates (b) vitamins (c) proteins (d) nucleic acids.

Last Answer : (b) vitamins

Which is wrong about nucleic acids? (a) DNA is single stranded in some viruses. (b) RNA is double stranded occasionally. (c) Length of one helix is 45 Å in B-DNA. (d) One turn of Z-DNA has 12 bases

Description : Which is wrong about nucleic acids? (a) DNA is single stranded in some viruses. (b) RNA is double stranded occasionally. (c) Length of one helix is 45 Å in B-DNA. (d) One turn of Z-DNA has 12 bases

Last Answer : (c) Length of one helix is 45 Å in B-DNA

Which of the following biomolecules does have a phosphodiester bond? (a) Amino acids in a polypeptide (b) Nucleic acids in a nucleotide (c) Fatty acids in a diglyceride (d) Monosaccharides in a polysaccharide

Description : Which of the following biomolecules does have a phosphodiester bond? (a) Amino acids in a polypeptide (b) Nucleic acids in a nucleotide (c) Fatty acids in a diglyceride (d) Monosaccharides in a polysaccharide

Last Answer : b) Nucleic acids in a nucleotide

Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by (a) base-sugar-phosphate (b) base-sugar-OH (c) (base-sugar-phosphate)n (d) sugar-phosphate.

Description : Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by (a) base-sugar-phosphate (b) base-sugar-OH (c) (base-sugar-phosphate)n (d) sugar-phosphate.

Last Answer : (a) base-sugar-phosphate

Which of the following are not polymeric? (a) Proteins (b) Polysaccharides (c) Lipids (d) Nucleic acids

Description : Which of the following are not polymeric? (a) Proteins (b) Polysaccharides (c) Lipids (d) Nucleic acids

Last Answer : (c) Lipids

Which one of the following structural formulae of two organic compounds is correctly identified along with its related function?(a) B : Adenine - A nucleotide that makes up nucleic acids (b) A : Triglyceride - Major source of energy (c) B : Uracil - A component of DNA (d) A : Lecithin - A component of cell membrane

Description : Which one of the following structural formulae of two organic compounds is correctly identified along with its related function? (a) B : Adenine - A nucleotide that makes up nucleic acids (b) A : Triglyceride - ... ) B : Uracil - A component of DNA (d) A : Lecithin - A component of cell membrane

Last Answer : (d) A : Lecithin - A component of cell membrane

Match the following and select the correct answer. (A) Centriole (i) lnfoldings in mitochondria (B) Chlorophyll (ii) Thylakoids (C) Cristae (iii)Nucleic acids (D) Ribozymes (iv) Basal body of cilia or flagella A B C D (a) (iv) (ii) (i) (iii) (b) (i) (ii) (iv) (iii) (c) (i) (iii) (ii) (iv) (d) (iv) (iii) (i) (ii)

Description : Match the following and select the correct answer. (A) Centriole (i) lnfoldings in mitochondria (B) Chlorophyll (ii) Thylakoids (C) Cristae (iii)Nucleic acids (D) Ribozymes (iv) Basal body of cilia or flagella A B C D (a) (iv) (ii) ... ii) (iv) (iii) (c) (i) (iii) (ii) (iv) (d) (iv) (iii) (i) (ii)

Last Answer : (a) (iv) (ii) (i) (iii)