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IB Molecular Biology SL HL
Test Description: Follows 2016 IB syllabus
Instructions: Answer all questions to get your test result.
1) Which of the following reactions occurs when a dipeptide is formed from amino acids?
A
hydrolysis
B
oxidation
C
condensation
D
denturation
2) What is the function of helicase?
A
It forms the DNA helix.
B
It adds new nucleotides to the DNA helix.
C
It forms bonds between DNA nucleotides.
D
It separates DNA strands.
3) What are the two parts to photosynthesis?
A
splitting of water and making O2
B
condensation and hydrolysis reaction
C
reflection and absorption reaction
D
light dependent reaction and light independent reaction
4) What is the composition of the backbone of DNA?
A
Alternating sugar and base molecules
B
Alternating sugar and phosphate molecules
C
A polysaccharide
D
Complementary base pairs
5) A certain gene codes for a polypeptide that is 120 amino acids long. Approximately how many nucleotides long is the mRNA that codes for this polypeptide likely to be?
A
40
B
360
C
30
D
480
6) What enzyme adds DNA nucleotides during replication?
A
DNA ligase
B
RNA primase
C
Helicase
D
DNA polymerase
7) Which substance is a base that is found in DNA?
A
cytokinin
B
adenosine
C
uracil
D
guanine
8) Which two colors of light does chlorophyll absorb MOST?
A
green and blue
B
red and blue
C
red and yellow
D
red and green
9) Which of the following are connected by a hydrogen bond?
A
Two glucose molecules in a disaccharide
B
The hydrogen and oxygen atoms of a water molecule
C
two strands of DNA
D
Two amino acid molecules of a dipeptide
10) Where does transcription take place?
A
in nucleus
B
in nuclear membrane
C
in cytoplasm
D
in ribosomes
*select an answer for all questions
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