Quick Biochemistry - Nucleic Acids (Section 11)
1
When ammonia (NH₃) interacts with a dog's liver, what substance is produced, and what is produced in a bird's liver?
2
Which pair of substances is utilized by Aspartate amino transferase for transamination?
Răspuns(B)
Glutamic acid and oxaloacetic acid
3
Which substance from the list below is not classified as a protein?
4
In which organ is the majority of urea synthesized?
5
A structure known as a polyribosome typically contains approximately how many individual ribosomes?
6
What compound is produced through the gradual transmethylation of ethanolamine?
7
Where does the initial genetic information originate?
8
Through which mechanism does the genetic code function?
Răspuns(C)
Nucleotide sequence of m RNA
9
Who is credited with first successfully synthesizing DNA in a laboratory setting?
10
Among the various types of RNA, which one typically exhibits the largest molecular weight?
11
The genetic message is converted from DNA into which of these compounds?
12
Which molecule has a characteristic double helix shape?
13
The stability of a DNA double helix is primarily due to
Răspuns(D)
Hydrogen bonding between purine and pyrimidine bases
14
Which statement about nucleic acids is most accurate?
Răspuns(B)
Both pentose nucleic acid and deoxypentose nucleic acid and deoxypentose nucleic acid Contain the same purines
15
Acid hydrolysis of a specific type of nucleic acid would produce these primary components:
Răspuns(D)
d-ribose, uracil, adenine, guanine, cytosine
16
Which of these is not found in a particular type of nucleic acid?
17
Which of the following statements is accurate?
Răspuns(D)
Nucleoproteins usually occur in the nucleus and cytoplasm
18
Which compound is present in a specific type of nucleic acid but not in another?
19
Nucleic acids are identified using their absorption peak near 260 nm. What causes this absorption?
20
Which of the following includes a deoxy sugar?
21
Răspuns(B)
A long polymer with diester bonds connecting nucleotides between C-3' and C-5'
22
What structure is referred to by the name Nucleosome?
23
What process results in the creation of mRNA?
24
What process creates a protein?
25
For which biological process are Sigma and Rho factors essential?
26
What type of DNA does the ox174 bacteriophage have?
27
What are Okazaki fragments composed of?
28
Where else is DNA located, besides the nucleus?
29
Describe the structure of mitochondrial DNA.
Răspuns(C)
Double stranded, circular
30
If a synthetic RNA sequence of UUUUUU (Poly U) is used, which amino acid will be in the resulting protein?
31
In the E. coli lac operon, what genetic elements contribute to its continuous function?
Răspuns(D)
Regulator, operator, and structural genes
32
In eukaryotic cells, a single messenger RNA (mRNA) molecule typically directs the production of
Răspuns(A)
A single protein molecule
33
In prokaryotic cells, a single messenger RNA (mRNA) molecule can often code for
Răspuns(A)
Multiple protein molecules
34
The enzyme responsible for synthesizing RNA using a DNA template is known as
35
The enzyme responsible for synthesizing DNA using an RNA template is called
36
The process of RNA synthesis requires a
37
In a messenger RNA (mRNA) molecule prepared for protein synthesis, what modified nucleotide is typically found at the 5' end (the cap)?
38
In a messenger RNA (mRNA) molecule prepared for protein synthesis, what nucleotide base typically forms the poly(A) tail?
39
Which of the following is the specific codon that codes for the amino acid phenyl alanine?
40
The primary location of genetic information that acts as a blueprint is
41
What are genes primarily composed of?
42
Where are codons located?
43
How does the genetic code function?
Răspuns(C)
The nucleotide order in mRNA
44
Which of the following urine components, found in plants, includes methyl groups?
45
Where is the hereditary information of humans primarily located?
46
Which of these molecules is NOT a naturally occurring nucleotide?
47
What type of amino acid has its amino and carboxyl groups bound to the same carbon atom?
48
What is the most likely identity of a nucleic acid containing over 8000 nucleotides?
49
Where is the genetic information of humans chiefly contained?
50
What is absent from RNA, besides ribose and phosphate?
