1. WHICH OF THE FOLLOWING REPRESENTS THE CENTRAL DOGMA OF BIOCHEMISTRY PROTEINS-
ID: 83213 • Letter: 1
Question
1. WHICH OF THE FOLLOWING REPRESENTS THE CENTRAL DOGMA OF BIOCHEMISTRY
PROTEINS-RNA-DNA
RNA-DNA-PROTEINS
DNA-RNA-PROTEINS
NONE OF THE AOVE
2. A STRAND OF DNA IS USED TO MAKE MESSENGER RNA. THIS PROCESS IS CALLED
TRANSLATION
TRANSCRIPTION
INITIATION PHASE
NONE OF THE ABOVE
3. INTRONS ARE
RETAINED
REMOVED
EXPRESSED
NONE OF THE ABOVE
4. EXONS ARE EXPRESSED.
True
False
5. DNA INTERACTS WITH RIBOSOMES DURING PROTEIN SYNTHESIS. .
True
False
6. CODONS CONTAIN 3 NUCLEOSIDES
True
False
7. THE GENETIC CODE CONTAINS 16 DIFFERENT CODONS
True
False
8. DNA CONTAINS URACIL
True
False
9. THE GENETIC CODE CONTAINS HOW MANY STOP CODONS?
0
1
2
3
10. THE GENETIC CODE CONTAINS HOW MANY START CODONS?
1
2
3
4
11. CONSIDERING THE WOBBLE HYPOTHESIS, WHICH OF THE FOLLOWING NUCLEOTIDES CAN BE CHANGED WITHOUT CHANGING THE AMINO ACID CODED FOR?
THE FIRST ONE
THE SECOND ONE
THE THIRD ONE
ANY ONE OF THE THREE
12. TWO HYDROGEN BONDS ARE BETWEEN
A AND T
C AND G
A AND U
BOTH A AND C
13. THERE ARE HOW MANY DIFFERENT TYPES OF AMINO ACIDS ?
10
20
12
NONE OF THE ABOVE
14. HOW MANY DIFFERENT TRANSFER RNA MOLECULES ARE THERE?
22
10
20
13
15. SICKLE CELL ANEMIA HAS WHICH OF THE FOLLOWING AMINO ACID LOCATED AT THE NUMBER 6 POSITION OF THE HEMOGLOBIN S BETA CHAIN?
VALINE
GLUTAMIC ACID
GLYCIBE
NONE OF THE ABOVE
16. RED BLOOD CELLS ASSUME A SICKLED SHAPE WHEN EXPOSED TO WHICH OF THE FOLLOWING CONDITIONS?
HYPEROXIA
HYPOXIA
HYPERCARBIA
INCREASED BLOOD PRESSURE
17. HYDROXYUREA
IS USED IN THE TREATMENT OF ANEMIA
INCREASES THE CONCENTRATION OF FETAL HEMOGLOBIN
DECREASES IRON LEVELS
NONE OF THE ABOVE
18. SICKLED RED BLOOD CELLS BLOCKS THE FLOW OF BLOOD IN THE ARTERIES.
True
False
19. RED BLOOD CELLS CONTAIN LARGE NUCLEI.
True
False
20. THE GENETIC CODE IS DIFFERENT IN BACTERIA.
True
False
a.PROTEINS-RNA-DNA
b.RNA-DNA-PROTEINS
c.DNA-RNA-PROTEINS
d.NONE OF THE AOVE
Explanation / Answer
1) The central dogma in biochemistry represents the sequence of events which takes place inside the cells in the production of protein from gene. It provides the basic framework for how genetic information flows. DNA replication occurs to make new DNA from existing DNA. It is followed by the process called transcription in which RNA is formed from DNA. From RNA, new proteins are produced. So the sequence of events are DNA --> RNA ----> proteins. So, the answer for this question is option (c)
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