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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
condensation
C
oxidation
D
denturation
2) What is the function of helicase?
A
It forms the DNA helix.
B
It separates DNA strands.
C
It forms bonds between DNA nucleotides.
D
It adds new nucleotides to the DNA helix.
3) What are the two parts to photosynthesis?
A
splitting of water and making O2
B
light dependent reaction and light independent reaction
C
condensation and hydrolysis reaction
D
reflection and absorption reaction
4) What is the composition of the backbone of DNA?
A
Alternating sugar and phosphate molecules
B
Alternating sugar and base molecules
C
Complementary base pairs
D
A polysaccharide
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
480
C
30
D
360
6) What enzyme adds DNA nucleotides during replication?
A
DNA ligase
B
Helicase
C
DNA polymerase
D
RNA primase
7) Which substance is a base that is found in DNA?
A
uracil
B
cytokinin
C
guanine
D
adenosine
8) Which two colors of light does chlorophyll absorb MOST?
A
red and green
B
red and blue
C
green and blue
D
red and yellow
9) Which of the following are connected by a hydrogen bond?
A
The hydrogen and oxygen atoms of a water molecule
B
Two amino acid molecules of a dipeptide
C
Two glucose molecules in a disaccharide
D
two strands of DNA
10) Where does transcription take place?
A
in cytoplasm
B
in nucleus
C
in ribosomes
D
in nuclear membrane
*select an answer for all questions
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