Genetics 1

Question 1

nucleotides are present in 2 forms:

Answer 1

poly and free

Question 2

how many functions are there for the nucleotides

Answer 2

7 functions: second messenger for hormones, activation of chemical compounds, synthesis of analogue, chemical group donors

Question 3

the anti gout analogue is

Answer 3

allopurinol

Question 4

the nucleotides are linked together by:

Answer 4

5 3 phosphodiester bond

Question 5

the characters of the DNA primary structure:

Answer 5

5 main characters: polarity(free ends), base sequence = coding structure, DNA is written in 5 3 direction

Question 6

the characters of the DNA secondry structure:

Answer 6

3 characters: antiparallel, right handled double helix, bp(hydrogen bonds)

Question 7

the shape of the tRNA

Answer 7

clover leaf like appearance stabilized by hydrogen bonds of the bp

Question 8

tRNA arms

Answer 8

D: dihydrouracil 3bp
TWC: thymine pesudouradine cytosine 5bp
anticodon: 7 bases 5bp
acceptor: 7 bp, cca sequence for the amino acid

Question 9

type of tail at the end of the mRNA

Answer 9

poly A tail

Question 10

the occurrence of the RNA

Answer 10

cytoplasm

Question 11

the shape of the RNA

Answer 11

variable

Question 12

type of polymerase in mRNA

Answer 12

polymerase 2

Question 13

type of polymerase in tRNA

Answer 13

polymerase 2

Question 14

type of polymerase in rRNA

Answer 14

polymerase 1 + polymerase 3 (5S)

Question 15

bases which form the RNA strands are:

Answer 15

not equal

Question 16

the bases in DNA are

Answer 16

A=T , C=G