77) The enzymes are essential catalysts that carry out the biochemical reaction in our body. The enzymes act on the substrate and convert it into the product.
The factors affecting the reactions:
So, all the options are correct.
78) RNA is synthesized from the DNA template by the process known as transcription and in this process, the complementary nitrogenous base Thymine is replaced with Uracil.
Adenine, Cytosine, Thymine, and Guanine are the nitrogenous bases present in DNA (Deoxyribonucleotide).
Adenine, Cytosine, Uracil, and Guanine are the nitrogenous bases present in RNA (Ribonucleotide).
So, the answer is Thymine which is not present in RNA.
79) According to Chargaff's rule, the purine to pyrimidine ratio is always 1: 1. Because purine always binds with a pyrimidine.
Purine: Adenine and Guanine.
Pyrimidine: Cytosine, Thymine, and Uracil.
Thus, Adenine: Thymine = 1: 1
Guanine: Cytosine = 1: 1
80) The codons are present in triplet that means one amino acid is encoded by three nucleotides.
1 amino acid = Three nucleotide
200 amino acid = 200 * 3 = 600 nucleotides
Note: During termination, the stop codon is incorporated and it does not code for any amino acid. Thus, the exact nucleotides will be + 3, and that id 603.
Please answer all...… Thank you Tipts 77) (A) Factor(s) affecting biochemical reaction rates within the cell...
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81)If a polypeptide chain contains 600 amino acids, then the
gene coding for this polypeptide must contain _____.
600 nucleotides
1200 nucleotides
1800 nucleotides
1800 codons
1800 anticodons
More than one of the above are correct.
82) When we altered gene triplet in the DNA produces a chain-terminating codon in the mRNA, the (1pts) result is called a reverse mutation nonsense mutation missense mutation spontaneous mutation frameshift mutation 83) A single base substitution changes the...
Please answer #10-14 & clearly explain your reasoning and indicate which # you are answering. Thank you so much! 10. DNA is more ____________ than RNA due to the absence of ______ group in the ribose. A. unstable, 3'-OH B. stable, 3'-OH C. unstable, 2'-OH D. stable, 2'-OH E. none of the above 11. The nucleotide that is present in RNA but not DNA is A. thymine. B. uracil. C. adenine. D. cytosine. E. guanine 12. Which of the following...
RNA differs from DNA in that it: all of the above contains ribose sugar contains uracil is usually found as a single-stranded molecule in cells Question 21 pts The correct order of steps in a PCR cycle is: Extension, denaturation, annealing Annealing, extension, denaturation Annealing, denaturation, extension Denaturation, annealing, extension The goal of the polymerase chain reaction (PCR) is to: Amplify a small amount of DNA sequence Cleave DNA molecules Digest bacterial plasmids Sequence DNA Which of the following is...
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97) The process of destroying all forms of life is called (1 pts) O antisepsis O sterilization disinfection bacteriostasis sanitation 98) Which of the following substances is capable of killing the vegetative cells but not necessarily the spores of infectious agents? O sporicide O disinfectant sterilizer OTwo of the above are correct. All of the above are correct. (1 pts) 99) Which of the following conditions influences the action of antimicrobial agents? con Atration or...
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13) The basic unit of bacterial measurement is the (1 pts) Omillimeter O micrometer O nanometer angstrom 14) The bacteria characterized by a very small size and pleomorphism are the (1pts) O mycobacteria mycoplasms Ospirochetes Ostaphylococci O streptococci 15) Spiral-shaped bacteria occur predominantly as (1pts) O diplobacilli clusters O filaments O palisades O single cells 16) Which of the following statements regarding bacterial capsules is/are true? (1 pts) the size of the capsule is related...
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a.) a pentose sugar linked to a phosphate group
b.) a pentose sugar linked to a nitrogenous base
c.) a hexose sugar linked to a nitrogenous base
d.) a nucleoside liked to a phosphate group
e.) none of the above are correct
85) The process by which donor bacterial genes are "absorbed" by the recipient cell from DNA fragments in the environment has been called transformation O conjugation transduction transversion O bacteriocinogenesis (1...
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65) The induction of enzymes synthesis is belived to involve the combination of the inducer molecule with the repressor protein; thereby, inactivating the repressor protein so it is unable to bind to the operator gene, thus allowing protein synthetic processes to proceed. O True O False 66) Coenzymes serve as 'carrier' molecules, the coenzyme may be (1 pts) O derived from vitamins metal ions O two of the above are correct O None of the...
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170 Test 18 Name 1. During the perlod of 2. During Chemical Evolution, elemerts reacted with each other to form smaliInorganic molecules As a resut which of the followig 3. In the theory of chemical evolution, the formation of th proto cell with a phospholipid bilayer was important because a) the t e Chemical Ewoludion tour elements made up 9e% f the molecus ws s not one of these elements? a) Oxygen,(0), bj Niterogen (N, cj Neon ("e),...
1. Which of the following are the sites within the human body where carbon dioxide and oxygen are exchanged? A. Alveoli B. Arteries C. Synapses D. Venules 2. Which of the following describes the most important reason for repeating an experimental investigation? A. To verify the validity of the original findings B. To expand upon the original investigation C. To manipulate the independent variable D. To attempt to disprove the hypothesis 3. Lithium has an atomic number of 3 and...