1 |
Lyell published the principle of. |
Population
Community
Geology
Blome
|
2 |
Who believed in the theory of special creation. |
Lamark
Darwin
Carolus Linnaeus
Hyell
|
3 |
The ultimate source of change is. |
Evolution
Mutation
Genetic drift
Migration
|
4 |
If the condon consisted of only two nucleotides, there would be how many possible condons? |
4
8
<sub>20</sub>
16
|
5 |
In Griffith experiment mice developed pneumonia when they were injected with: |
R-type bacteria
Heat killed S-type bacteria
Heat killed R-type bases
Heat killed S-type becteria along with live R-type becteria
|
6 |
In eukaryotic mRNA molecule there are 90 nucleotide involved in translation process. What is the number of amino acid in the protein formed by this mRNA molecules? |
29 Amino acids
30 Amino acids
45 Amico acids
90 Amino acids
|
7 |
If an mRNA is synthesized with the differnt codons, what is the minimum number of amino acids in the protein that is formed by the mRNA? |
64 Amino acids
62 Amino acids
60 Amino acids
None of them
|
8 |
If the amount of adenine in DNA of a bacterial cell is 36% of the total nitrogenous bases, what will be the amount of guanone in the DNA of a cell in next generations: |
14 %
28 %
36 %
64 %
|
9 |
In mitochodria UGA codon act to specify __________ instead stop codon: |
Argenine
Valine
Glumatic acid
Trytophan
|
10 |
Which one of the fllowing acts as a stop codon? |
UGG
UGC
UAG
UGU
|
11 |
In Meselson ansd stahl experiment, the DNA from sample at 20 minutes, after centrifugatioon it made sediments at the : |
Top
Bottom
Intermediate
Top & intermediate
|
12 |
In hershey & chase experiment, 32p labeled bacteriophages allowed to infect the becteria.During analysis 32 p activity wa detected: |
In culture medium
On the surface of becterial cell
Inside the becteiral cell
Both a and B
|
13 |
A chromosome with unequal length of its arm is called: |
Metacantric
Sub metacentric
Acrocentric
Telocentric
|
14 |
If all members of a population are homozygous for the same allele that allele is said to be |
Multiple allele
Jumping gene
Fixed in the gene
Perfect gene
|
15 |
Armadillos the armoured mammals live only in the |
Africa
America
Europe
Asia
|
16 |
In the eighteenth century organisms were classified by |
Charles Darwin
Alfred Wallace
Carolus Linnaeus
J.B Lamarck
|
17 |
The most threatened areas on the earth have been reduced to 44% of their original extent are |
Tropical rain forests
Temperate rain forests
Carbiniferous forests
Deciduous rain forests
|