Answer: 2. Uracil Adenine, Cytosine and also Guanine are discovered in both RNA and DNA. Thymine is found only in DNA; Uracil takes its (Thymine) ar in RNA molecules.Answer: 1. Cytosine, Thymine and Uracil In all, there are 5 nitrogeneous bases : Cytosine, Thymine, Uracil, Adenine and also Guanine. The purine bases (Adenine and Guanine), have actually a structure which consists of 2 rings that atoms. The other three bases are referred to as pyrimidine bases.Answer: 2. Hydrogen bonds The complementary basic pairs : A - T and G - C are held together by hydrogen bonds.Answer: 1. T-G-T-C-G-G-C-AT. Keep in mind that complementary basic pairs are : A - T and G C. So, to uncover the complementary strand, change A through T, G through C and vice versa.Answer: 1. BacteriaAnswer: c) 2 The adenin - Thymine basic pair is organized together by 2 hydrogen bonds when the Guanine - Cytosine base pair is held together through 3 hydrogen bonds. That is also the reason why the 2 strands the a DNA molecule deserve to be separated more easily at sections that space densely inhabited by A - T base pairs.Answer: 2. The DNA molecule of different types have different sequences of base-pairs.Answer: 2. Every the above The 3 options noted accurately perform the differences between DNA and RNA molecules. Keep in mind that RNA molecule are solitary stranded with a couple of double-stranded areas of complementary basepairing. These regions are referred to as hairpin loops. Also, the 5-carbon sugar in RNA has an ext oxygen 보다 the matching sugar in DNA.Answer: 4. Nucleotides The DNA molecule is a polymer whose monomer units are nucleotides and the polymer is known as a "polynucleotide". Each nucleotide consists of a 5carbon street (deoxyribose), a nitrogen containing base attached come the sugar, and a phosphate group. Over there are four different species of nucleotides uncovered in DNA. They are : Adenine, Guanine, Cytosine and also Thymine.Answer: 1. Semiconservative The DNA replication process is semiconservative due to the fact that one original strand that the double stranded DNA helix is found in every daughter cabinet after replication.Answer: a) 1.8 metersThe exactly answer is 1.8 meters. The coiled molecule is included within the cell nucleus which has a diameter of about 6 micrometers !!!Answer : 2. X-Ray crystallography Rosalind Franklin provided X-Ray diffraction to recognize the structure of DNA. She to be in reality the very first to state that the the sugar-phosphate backbone of DNA lies top top the exterior of the molecule. She also elucidated the an easy helical framework of the molecule.Answer: 1. MRNA mRNA is a photocopy of a gene v a sequence complementary come one section of the DNA strand (gene) and identical come the other. The mRNA carries this genetic information from the cabinet nucleus come the ribosomes in the cytoplasm whereby proteins space manufactured. Note: mRNA - messenger RNA; tRNA - move RNA ; rRNA - ribosomal RNA ; snRNA little nuclear RNAAnswer: 2. DNA is provided to make RNA which is provided to make protein. The RNA molecule is one intermediate in between the DNA molecule and also the protein. This lets the DNA stay pristine and protected, away from the caustic chemistry the the cytoplasm outside the nucleus. Also, many duplicates of an RNA molecule deserve to be made which permits the amplification of hereditary information.Answer:Answer: 4. A pentose sugar and a nitrogeneous heterocyclic base. A nucleoside is comparable to a nucleotide, other than that it contains only the sugar and base, without the phosphate group. Examples encompass guanosine, thymidine and also inosine.2. A phosphate group, a pentose sugar and a nitrogeneous heterocyclic base. A nucleotide consists of a nitrogenous heterocyclic basic (a purine or a pyrimidine), a pentose sugar (deoxyribose in DNA or ribose in RNA), and also a phosphate or polyphosphate group. A DNA molecule (a polynucleotide) is made up of a big number of these nucleotide (monomer) units. Note : A polynucleotide is a main point acid.Answer: 2. James Watson, Francis Crick and Maurice Wilkins The double Helix structure of DNA is among the most significant discoveries of all time. James Watson, Francis Crick and also Maurice Wilkins obtained a Nobel Prize for the dual Helix model of DNA in 1962 ! an additional important figure, without whom this exploration would not have actually been possible was Rosalind Elsie Franklin. Unfortunately, Franklin passed away at the period of 37 native ovarian cancer just four years prior to the Nobel prize to be awarded to Watson, Cricks and also Wilkins.Answer: 2. Walter Gilbert and Frederick Sanger Walter Gilbert that Harvard University and also Frederick Sanger occurred a technique for decoding DNA. This technique sparked off the biotech revolution because it permitted researchers to begin cloning genes.Answer: b) 35,000Answer: 2. Erwin ChargaffThe human Genome task revealed that people have about 35,000 genes which is lower than expected. Even an insect as tiny as the fruit fly has as countless as 20,000 genes.In 1949, Erwin Chargaff, a biochemist, reported that the quantity of DNA and also its nitrogenous bases varies from one varieties to another. He also found that the quantity of adenine equates to the quantity of thymine, and the amount of guanine amounts to the amount of cytosine in DNA native every species !Answer: B. 30 nm, 30 µmAnswer:B. Light microscope.Answer:D. Abnormal cells me destruct by apoptosis.Answer: 2. In the G2 phase of the cell cycle.Answer:C. The embryo increasesAnswer: D. Gastrulationdramatically in size.Answer: E. EctodermAnswer: B. BlastodermAnswer: 2. ToleranceAnswer: 3. Colon cancerAnswer: 1. 250,000 year agoAnswer:1. Very first trimesterAnswer: 3. Gene activation and also gene repression eventsAnswer: b. True, that occurs late in prophase. In greater eukaryotes, the break down of the nuclear envelope is one of the last occasions to occur during prophase.Answer: 4. IgEAnswer: b. No, crossing over is not linked with mitosis.Answer: d) none of the above.Answer: b) S. The S here stands because that Synthesis (of DNA).DNA replication occurs throughout interphase (remember though, this is no a stage of mitosis, it"s that part of the cell cycle when mitosis isn"t occuring)Answer: Cytokinesis is a component of mitosis. Cytokinesis (the division of cytoplasm between the 2 daughter cells) is not a component of mitosis- both, however, are parts of cell division.Answer: b. Yes. Reduction department is compelled to create haploid cells (1⁄2 the number of chromosomes) i beg your pardon are associated in fertilization.Answer: d) none of the above.DNA replication occurs during interphase (as with mitosis - psychic interphase is no a phase of mitosis or meiosis).Answer: b) 3.1415926535Answer: d) Prophase ICrossing over occurs specifically throughout the pachytene phase of Prophase I.Answer: c) It indicates that two comparable chromosomes (same genes, yet with potentially different DNA order in each gene) come together. This is a tough principle to understand. Conversely, the genes room the same, every DNA basepairing in ~ the same gene may not it is in the same between the chromosomes (this is how a person have the right to be heterozygous for a gene/trait).Answer: C. Bacteria and also bluegreen algaeAnswer: D. The person eye, the irradiate microscope, and the electron microscope.Answer: D.

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Chloroplasts are uncovered in tree cells yet not in prokaryotic or pet cells.Answer: C. Glycolysis occurs within mitochondria.