Description : $ The regular sequences of a cell cycle is `G_(1),S,G_(2),M` and C ! Replication of DNA occurs during S phase.
Last Answer : $ The regular sequences of a cell cycle is `G_(1),S,G_(2),M` and C ! Replication of DNA occurs during ... , R is wrong D. If both As and R are wrong.
Description : The sulfonamides interfere with bacterial metabolism by a. blocking cell wall synthesis. b. disrupting folic acid metabolism. c. reacting with bacterial cell membranes. d. inhibiting DNA replication.
Last Answer : b. disrupting folic acid metabolism.
Description : What does bidirectional replication mean? -Biology
Last Answer : answer:
Description : $ The enzymes which joins short pieces DNA in the laggins strand is called ligase. ! Lagging strand and leading strand are formed due to replication f
Last Answer : $ The enzymes which joins short pieces DNA in the laggins strand is called ligase. ! Lagging strand and ... wrong D. If both As and R are wrong.
Description : $ DNA replication is semiconservative. ! Helicases are the enzymes which can break the hydrogen bonds between the nuclotides of DNA
Last Answer : $ DNA replication is semiconservative. ! Helicases are the enzymes which can break the hydrogen bonds between the ... D. If both As and R are wrong.
Description : Assertion : Replication of DNA not occurs during interkinesis. Reason : Divison of chromosomes takes place during meiosis-II.
Last Answer : Assertion : Replication of DNA not occurs during interkinesis. Reason : Divison of chromosomes takes place ... . If both Assertion & Reason are false.
Description : .Centromere is required for (a) replication of DNA (b) chromosome segregation (c) poleward movement of chromosomes (d) cytoplasmic cleavage.
Last Answer : (c) poleward movement of chromosomes
Description : DNA contains some palindromic sequences which (A) Mark the site for the formation of replication forks (B) Direct DNA polymerase to turn back to replicate the other strand (C) Are recognized by restriction enzymes (D) Are found only in bacterial DNA
Last Answer : Answer : C
Description : The process of replication in plasmid DNA, other than initiation, is controlled by (a) mitochondrial gene (b) plasmid gene (c) bacterial gene (d) none of these.
Last Answer : c) bacterial gene
Description : The Ames test is an effective procedure for a. Identifying disease-causing bacterial species. b. Detecting potential human carcinogens. c. Determining if DNA replication has occurred. d. Detecting antibiotic resistance.
Last Answer : b. Detecting potential human carcinogens.
Description : A bacterial colony containing DNA made up of 100% N15 nitrogen bases is allowed to replicate in a medium containing N14 bases. After one round of replication the result would be a) All individuals ... Only 50% individuals would be hybrids d) All individuals would have DNA made up of 100% N14
Last Answer : b) All individuals will be hybrids
Description : DNA fragments upto 45 kilobases in size can be cloned in (A) Bacterial plasmids (B) Lambda phage (C) Cosmids (D) Yeast artificial chromosomes
Description : Which part of the chromosome is known as primary constriction?
Last Answer : Ans. Centromere
Description : When primary molars are prepared for stainless steel crowns, should the depth for reduction of the proximal surface be similar to the depth of the buccal and lingual surfaces? A. Yes; reduction ... can be seated E. No, because of lateral constriction, the lingual surface needs greatest reduction
Last Answer : B. No, proximal reduction is greater to allow the crown to pass the contact area
Description : Chromosomes in a bacterial cell can be 1 – 3 in number and (a) are always circular (b) are always linear (c) can be either circular or linear, but never both within the same cell (d) can be circular as well as linear within the same cell
Last Answer : (a) are always circular
Description : The first step in infection of a host bacterial cells by a phage is A- adsorption B- absorption C- penetration D- replication
Last Answer : adsorption
Description : Can there be DNA replication without cell division? -Biology
Last Answer : Yes, there can be DNA replication without involvement of cell division in a cell and one such condition existential is called as 'Polyteny'. Polyteny basically occurs because of failure of ... observed in Order Diptera of Class Insecta of Phylum Arthropoda (eg- Drosophila Salivary glands).
Description : Satellite DNA is important because it (a) does not code for proteins and is same in all members of the population (b) codes for enzymes needed for DNA replication (c) codes for proteins ... and also the same degree of polymorphism in an individual, which is heritable from parents to children.
Last Answer : (d) shows high degree of polymorphism in population and also the same degree of polymorphism in an individual, which is heritable from parents to children
Description : DNA replication occur in which stage of cell division? (a) G1 phase (b) G2 phase (c) S phase (d) M phase
Last Answer : (c) S phase
Description : In which stage of cell cycle, DNA replication occurs? (a) G1-phase (b) S-phase (c) G2-phase (d) M-phase
Last Answer : (b) S-phase
Description : In the somatic cell cycle (a) in G1 phase DNA content is double the amount of DNA present in the original cell (b) DNA replication takes place in S phase (c) a short interphase is followed by a long mitotic phase (d) G2 phase follows mitotic phase.
Last Answer : (b) DNA replication takes place in S phase
Description : When cell has stalled DNA replication fork, which checkpoint should be predominantly activated? (a) G1/S (b) G2/M (c) M (d) Both G2/M and M
Last Answer : b) G2/M
Description : Identify the correct statement with regard to G1 phase (Gap 1) of interphase. (a) DNA synthesis or replication takes place. (b) Reorganisation of all cell components takes place. (c) Cell is metabolically active, grows but does not replicate its DNA. (d) Nuclear division takes place.
Last Answer : (c) Cell is metabolically active, grows but does not
Description : The development of global regulatory systems in prokaryotes A- determines the exact location of the cell on the globe B- aids in DNA replication C- .determines the exact location of the replication site D- regulates many genes under varying environmental conditions
Last Answer : regulates many genes under varying environmental conditions
Description : Which one of the following is NOT an event of sporulation? a. Symmetrical cell divisions b. Mother cell disintegration c. DNA replication d. Prespore engulfment by the mother cell
Last Answer : a. Symmetrical cell divisions
Description : Multiple checkpoints in the eukaryotic cell cycle ensure that division occurs only after sufficient growth and faithful DNA replication, and only when favorable conditions exist. Of the many proteins involved in ... CDKs) are among the most important. How do CDKs function to control the cell cycle?
Last Answer : CDKs phosphorylate various protein substrates that are required for cell cycle progression. Some of the important substrate proteins that CDKs phosphorylate include condensin proteins, which are essential ... which form a stabilizing network under the nuclear membrane that assembles during mitosis.
Description : $ When the total number of chromosomes is not the exact multiple of the haploid number of an organisms, the phenomenon is called euploidy. ! Euploidy
Last Answer : $ When the total number of chromosomes is not the exact multiple of the haploid number of an organisms, the ... wrong D. If both As and R are wrong.
Description : $ A chromosomes with equal sized arms is called isobrachial. ! Barr bodies are present in the cells of human females.
Last Answer : $ A chromosomes with equal sized arms is called isobrachial. ! Barr bodies are present in the cells of human ... wrong D. If both As and R are wrong.
Description : $ The term chromosome was introduced by Waldeyer. ! Sex chromosomes are also called Heterosomes.
Last Answer : $ The term chromosome was introduced by Waldeyer. ! Sex chromosomes are also called Heterosomes. A. If both ... wrong D. If both As and R are wrong.
Description : $ Those genes which are present on "Y" chromosomes of human beings are called holandric genes. ! Holandric genes are present both in men as well as wo
Last Answer : $ Those genes which are present on "Y" chromosomes of human beings are called holandric genes. ! Holandric ... wrong D. If both As and R are wrong.
Description : $ Nucleosome is present on the chromosomes. ! A true nucleus is called Eukaryon.
Last Answer : $ Nucleosome is present on the chromosomes. ! A true nucleus is called Eukaryon. A. If both As and R are ... is wrong D. If both As and R are wrong.
Description : $ Inharitance of flower colour in mirabilis jalapa is type of polygenic inheritance. ! Polysomes are a type of chromosomes.
Last Answer : $ Inharitance of flower colour in mirabilis jalapa is type of polygenic inheritance. ! Polysomes are a type ... wrong D. If both As and R are wrong.
Description : $ Mesosome is a type of polyribosomes. ! Polyribosomes from a part of the chromosomes.
Last Answer : $ Mesosome is a type of polyribosomes. ! Polyribosomes from a part of the chromosomes. A. If both As and ... is wrong D. If both As and R are wrong.
Description : $ Viruses are not an exception to all theory ! During mitosis the number of chromosomes is reduced to a half.
Last Answer : $ Viruses are not an exception to all theory ! During mitosis the number of chromosomes is reduced to a half ... wrong D. If both As and R are wrong.
Description : $ Hormones are the secretions to all theory. ! During mitosis the number of chromosomes is reduced to a half.
Last Answer : $ Hormones are the secretions to all theory. ! During mitosis the number of chromosomes is reduced to a half ... wrong D. If both As and R are wrong.
Description : Which of the following type of recombination does not require homologous sequences and isimportant for the integration of viral genomes into bacterial chromosomes? A- Mutagenic recombimation B- Site-specific recombination C- Replicative recombination D- General recombination
Last Answer : Site-specific recombination
Description : Part of chromosome after secondary constriction is called :-
Last Answer : Part of chromosome after secondary constriction is called :- A. Chromomere B. Telomere C. Satellite D. Nucleolar organiser
Description : $ Proteins, polysaccharides and nucleic acid are the macromolecules of a cell. ! DNA contains Ribose Sugar.
Last Answer : $ Proteins, polysaccharides and nucleic acid are the macromolecules of a cell. ! DNA contains Ribose Sugar. A ... wrong D. If both As and R are wrong.
Description : $ DNA contains all the neccesary information and instructions for cell reproduction Reproduction is not essential for the living organisms.
Last Answer : $ DNA contains all the neccesary information and instructions for cell reproduction Reproduction is not essential ... . If both As and R are wrong.
Description : Which of the following hormone causes vaso-constriction `:-`
Last Answer : Which of the following hormone causes vaso-constriction `:-` A. ANF B. Aldosterone C. ADH D. ACTH
Description : Choose the incorrect statement from the following (a) Sympathetic system increases rate of SA node (b) Sympathetic system causes constriction of coronary arteries (c) Sympathetic system causes increased motility of GIT smooth muscles (d) Sympathetic system causes constriction of sphincter in GIT
Last Answer : Ans: C
Description : Atropine overdose may cause which one of the following (a) Gastrointestinal smooth muscle crampine (b) Increased cardiac rate (c) Increased gastric secretion (d) Pupillary constriction (e) Urinary frequency
Last Answer : Ans: B
Description : The following are true about pupil reaction to light: a. secretion of acetylcholine is responsible for pupil dilatation b. constriction of the pupil is mediated by nerve fibres travelling in ... fibres travelling in the long ciliary nerve d. the sympathetic nerve innervates the dilator muscles
Last Answer : the sympathetic nerve innervates the dilator muscles
Description : In human being, haemorrhage causes a. venous constriction b. decreased blood flow to the skin c. a fall in cardiac output d. all above
Last Answer : all above
Description : In human being, haemorrhage causes a. venous constriction b. decreased blood flow to the skin c. a fall in cardiac output d. splenic contraction
Last Answer : splenic contraction
Description : One function of parasympathetic nervous system is (a) contraction of hair muscles (b) stimulation of sweat glands (c) acceleration of heart beat (d) constriction of pupil.
Last Answer : (d) constriction of pupil.
Description : The adiabatic throttling process of a perfect gas is one of constant enthalpy (A) In which there is a temperature drop (B) Which is exemplified by a non-steady flow expansion (C) Which can be performed in a pipe with a constriction (D) In which there is an increase in temperature
Last Answer : (C) Which can be performed in a pipe with a constriction
Description : The cranial nerve that is responsible for muscles that move the eye and lid is the _____________________ nerve. a) oculomotor The oculomotor (III) cranial nerve is also responsible for pupillary constriction ... (VII) nerve is responsible for salivation, tearing, taste, and sensation in the ear.
Last Answer : a) oculomotor The oculomotor (III) cranial nerve is also responsible for pupillary constriction and lens accommodation.
Description : Which of the following body substances causes increased gastric secretion, dilation of capillaries, and constriction of the bronchial smooth muscle? a) Histamine When cells are damaged, ... Prostaglandin Prostaglandins are unsaturated fatty acids that have a wide assortment of biologic activity.
Last Answer : a) Histamine When cells are damaged, histamine is released.
Description : In class II preparation it is difficult to place the gingival seat when preparation is extended too gingivally because the: A. Enamel rods are directed occlusally B. Marked cervical constriction
Last Answer : B. Marked cervical constriction