Description : Pick up the correct statement from the following: (A) The framework which consists of a series of connected lines, the lengths and directions of which are found from measurements, is called a traverse ... system and ends on another such point, is called a controlled traverse (D) All the above
Last Answer : (D) All the above
Description : What are sticky ends in DNA and their significance? -Biology
Last Answer : answer:
Description : Assetion: Restriction enzymes cut the strand 27 of DNA to produce sticky ends Reason : Stickiness of the ends faciliates the action of the enzyme DNA
Last Answer : Assetion: Restriction enzymes cut the strand 27 of DNA to produce sticky ends Reason : Stickiness of ... D. If both assertion and reason are false
Description : In sticky ends produced by restriction endonucleases (A) The 2 strands of DNA are joined to each other (B) The DNA strands stick to the restriction endonuclease (C) The ends of a double stranded fragment are overlapping (D) The ends of a double stranded fragment are non overlapping
Last Answer : Answer : C
Description : All of the following statements about restriction endonucleases are true except: (A) They are present in bacteria (B) They act on double stranded DNA (C) They recognize palindromic sequences (D) They always produce sticky ends
Last Answer : Answer : D
Description : Identify the wrong statement with regard to restriction enzymes. (a) Each restriction enzyme functions by inspecting the length of a DNA sequence. (b) They cut the strand of DNA at palindromic sites. (c) They are useful in genetic engineering. (d) Sticky ends can be joined by using DNA ligases.
Last Answer : d) Sticky ends can be joined by using DNA ligases.
Description : A seals sticky ends of recombinant DNA segments. a. DNA Ligase b. restriction endonuclease c. protease d. RNA polymerase
Last Answer : b. restriction endonuclease
Description : Stem and loop structures are A- proteins that help partially denatured enzymes to recover their native configuration B- structures in DNA caused by inverted repeats C- structures at the ends of linear eukaryotic DNA molecules D- the bonds between adjacent DNA nucleotides in the same strand
Last Answer : structures in DNA caused by inverted repeats
Description : 12. The hydrophobic ends of phospholipid molecules are: (a) Polar (b) Non-polar © Neutral (d) Bipolar
Last Answer : Answer: b Non-polar
Description : Costal cartilage: a) attach the ribs to the sternum b) cover the ends of the femur c) is found in the pinna of the ear d) forms the intervertebral disks of the backbone
Last Answer : ANSWER: A -- Attach the ribs to the sternum
Description : During replication, the template DNA is unwound (A) At one of the ends (B) At both the ends (C) At multiple sites (D) Nowhere
Description : The correct statement concerning RNA and DNA polymerases is (A) RNA polymerase use nucleoside diphosphates (B) RNA polymerase require primers and add bases at 5' end of the growing polynucleotide ... and DNA polymerases can add nucleotides only at the 3' end of the growing polynucleotide chain
Description : Plasmid has been used as vector because (a) it is circular DNA which have capacity to join to eukaryotic DNA (b) it can move between prokaryotic and eukaryotic cells (c) both ends show replication (d) it has antibiotic resistance gene.
Last Answer : (a) it is circular DNA which have capacity to join to eukaryotic DNA
Description : Restriction endonucleases are enzymes which (a) make cuts at specific positions within the DNA molecule (b) recognize a specific nucleotide sequence for binding of DNA ligase (c) restrict the action of the enzyme DNA polymerase (d) remove nucleotides from the ends of the DNA molecule
Last Answer : (a) make cuts at specific positions within the DNA molecule
Description : Antiparallel strands of a DNA molecule means that (a) one strand turns clockwise (b) one strand turns anti-clockwise (c) the phosphate groups of two DNA strands, at their ends, share the same position (d) the phosphate groups at the start of two DNA strands are in opposite position (pole).
Last Answer : (d) the phosphate groups at the start of two DNA strands are in opposite position (pole).
Description : In DNA sequencing, the primer A.specifies where the sequence ends B.specifies where the sequence begins C.both (a) and (b) D.generates variety of different sized fragments
Last Answer : B.specifies where the sequence begins
Description : Coenzymes are (A) Heat stable, dialyzable, non protein organic molecules (B) Soluble, colloidal, protein molecules (C) Structural analogue of enzymes (D) Different forms of enzymes
Last Answer : Answer : A
Description : Which group forms the strongest H-bonds to water molecules? (a) Alcohols (b) Ethers (c) Phenols (d) All equally strong
Last Answer : Phenols
Description : The sum of energies of all the molecules in a system, energies that appear in several complex forms. a. External Energy b. Internal Energy c. Kinetic Energy d. None of the above
Last Answer : Internal Energy
Description : Molecular oxygen is said to be paramagnetic. This indicates that molecular oxygen: w) is a gas at room temperature x) forms molecules containing two oxygen atoms y) has an approximate molecular weight of 32 z) has unpaired electrons
Last Answer : ANSWER: Z -- HAS UNPAIRED ELECTRONS
Description : Circular molecules of extrachromosomal DNA are also called -Biology
Description : After 4 PCR cycles how many DNA molecules are formed from one DNA template molecule ?
Last Answer : After 4 PCR cycles how many DNA molecules are formed from one DNA template molecule ? A. 4 B. 32 C. 16 D. 8
Description : Labelled-D contains :- (i) A few RNA molecules (ii) 70s ribosome (iii) Enzymes (iv) Circular DNA
Last Answer : Labelled-D contains :- (i) A few RNA molecules (ii) 70s ribosome (iii) Enzymes (iv) Circular DNA A. ii, iv B. ... iv, C. ii, iii, iv D. i, ii, iii, iv
Description : What is the name of the macro molecules that make up DNA?
Last Answer : Nucleic acids.
Description : How many molecules of DNA would result from the molecule after five cycles of PCR?
Last Answer : The number of double stranded DNA pieces is doubled in each cycle, so that after n cycles you have 2^n (2 to the n:th power) copies of DNA. For example, after 10 cycles you have 1024 copies, after 20 cycles you have about one million copies, etc.
Description : What DNA is made up of many smaller molecules called .?
Last Answer : Feel Free to Answer
Description : What are the smaller repeating molecules that make up a DNA or RNA molecule called?
Last Answer : Need answer
Description : Every DNA molecule is made up of molecules called?
Last Answer : dk
Description : DNA molecules are composed of deoxyribonucleotides of (a) Adenine and guanine (b) Adenine, guanine and cytosine (c) Adenine, guanine, cytosine and thymine (d) None of the above
Last Answer : Ans:(c)
Description : Do all molecules of DNA have the same amounts of nitrogenous bases?
Last Answer : The number and sequence of nitrogenous bases in the DNA molecule are key elements in variations that are found in chromosomes. Different organisms have different numbers of the four bases, and the sequence ... and thymine will always be the same, as will the percentage of cytosine and guanine.
Description : Restriction endonucleases (a) are present in mammalian cells for degradation of DNA when the cell dies (b) are used in genetic engineering for ligating two DNA molecules (c) are used for in vitro DNA synthesis (d) are synthesized by bacteria as part of their defense mechanism.
Last Answer : (d) are synthesized by bacteria as part of their defense mechanism.
Description : Gel electrophoresis is used for (a) construction of recombinant DNA by joining with cloning vectors (b) isolation of DNA molecules (c) cutting of DNA into fragments (d) separation of DNA fragments according to their size.
Last Answer : (d) separation of DNA fragments according to their size.
Description : Choose the correct pair from the following. (a) Ligases - Join the two DNA molecules (b) Polymerases - Break the DNA into fragments (c) Nucleases - Separate the two strands of DNA (d) Exonucleases - Make cuts at specific positions within DNA
Last Answer : (a) Ligases - Join the two DNA molecules
Description : With regard to DNA molecules: a. they contain adenine, cytosine, guanine and uracil bases b. they can be detected with Western blotting c. they can be detected with Southern blotting d. they are denatured at temperature of 1000C
Last Answer : they can be detected with Southern blotting
Description : Regarding interferon: a. it is a virus specific molecules b. it acts by neutralizing exotoxin c. it enhances the histocompatibility antigen on cell surface and thereby activate the T cells d. it exerts its effect by integrating itself with the DNA of virus infected cells
Last Answer : it enhances the histocompatibility antigen on cell surface and thereby activate the T cells
Description : Viruses are no more “alive” than isolated chromosomes because (a) they require both RNA and DNA (b) they both need food molecules (c) they both require oxygen for respiration (d) both require the environment of a cell to replicate.
Last Answer : (d) both require the environment of a cell to replicate.
Description : .Viroids differ from viruses in having (a) DNA molecules without protein coat (b) RNA molecules with protein coat (c) RNA molecules without protein coat (d) DNA molecules with protein coat
Last Answer : (c) RNA molecules without protein coat
Description : What are enzymes? (a) saccharides that catalyze chemical reactions (b) unsaturated fats that catalyze chemical reactions (c) DNA molecules that catalyze chemical reactions (d) proteins that catalyze chemical reactions
Last Answer : proteins that catalyze chemical reactions
Description : Without restriction endonucleases, it would be very difficult to a. Force Plasmids into Bacteria. b. Chemically Open Dna Molecules. c. Replicate Dna In A Recombinant Cell. d. Bring About Mutations In Bacteria.
Last Answer : b. Chemically Open Dna Molecules.
Description : are single-stranded DNA molecules that can recognize and bind to a distinctive nucLeotide sequence of a pathogen. a. Prophages b. Plasmids c. Cloning vectors d. DNA probes
Last Answer : d. DNA probes
Description : In the semiconservative method of replication a. Both parent strands are degraded. b. One parent strand is conserved in each of the the new dna. c. Both parent strands reform with one another. d. Okazaki fragments form both of the new molecules of DNA.
Last Answer : b. One parent strand is conserved in each of the the new dna.
Description : Which of the following statement describes plasmids? A- Another name for a protoplast B- A complex membrane structure that covers the chromosome of bacteria Small, circular DNA molecules that can exist independently of chromosomes commonly C- found in bacteria D- None of the above
Last Answer : found in bacteria
Description : The double helix is a structural arrangement associated with _____. a. A Polysaccharide. b. The DNA Molecule. c. Glucose Molecules In Starch. d. A Protein.
Last Answer : b. The DNA Molecule.
Description : Think carefully, now. How many DNA molecules are in each of your somatic cells?
Last Answer : •In preparation for cell division, DNA is replicated and the chromosomes condense •Each duplicated chromosome has two sister chromatids, which separate during cell division, but a single DNA MOLECULE
Description : 6) In agarose gel electrophoresis, DNA molecules are separated on the basis of their- a)charge only b)size only c)charge to size ratio d)all of the above
Last Answer : d)all of the above
Description : Q4. Which of the following is not required in the preparation of a recombinant DNA molecules? a. Restriction endonuclease b. Restriction mapping c. Centrifugation d. PCR.
Last Answer : 4. (b) restriction mapping
Description : Viroids differ from viruses in having; (1) DNA molecules without protein coat (2) RNA molecules with protein coat (3) RNA molecules without protein coat (4) DNA molecules with protein coat
Last Answer : (3) RNA molecules without protein coat
Description : Electrophoresis is mainly used for: (a) Differentiate the biological sample (b) To perform the human specific presumptive tests (c) DNA isolation from biological material (d) Separates the molecules
Last Answer : Ans: (d). Separate the molecules
Description : [Fluff time] So you want to play a game, do you, how long can you keep a smooth/slippery, sticky/gripping game going?
Last Answer : Guacamole
Description : What's your recipe for success for making sticky rice, and does your method work for any type of rice?
Last Answer : Plain white rice In a rice cooker with chicken broth.