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level: Level 2 - Extension

Questions and Answers List

level questions: Level 2 - Extension

Question	Answer
Which statement is true of genes? a) A gene is a short section of DNA that codes for a protein. b) A single molecule of DNA c) Humans have 46 genes	a) A gene is a short section of DNA that codes for a protein.
How many chromosomes does a human have in each body cell? a) 22 pairs b) 23 pairs c) 46 pairs	b) 23 pairs
Which statement is correct about the cells produced by mitosis? a) Two daughter cells are produced, each has the same number of chromosomes as the parent cell b) Four daughter cells are produced, each has the same number of chromosomes as the parent cell c) Two daughter cells are produced, each has half the number of chromosomes as the parent cell	a) Two daughter cells are produced, each has the same number of chromosomes as the parent cell
What happens during interphase? a) DNA replication b) Cytoplasm separates c) the nucleus dissolves	a) DNA replication
A scientist observes 100 cancer cells with a microscope. If 16 cells are undergoing mitosis and the length of the cell cycle is 400 hours, what is the length of mitosis? a) 116 hours b) 64 hours c) 4 hours	b) 64 hours
How much time is spent in interphase Vs mitosis? a) Interphase 90%, Mitosis 10% b) Interphase 50%, Mitosis 50% c) Interphase 10%, Mitosis 90%	a) Interphase 90%, Mitosis 10%
Where would you find fast dividing cells in plants? a) Stem and Leaves b) Leaves and Flowers c) Stem and Roots	c) Stem and Roots
True of False: Mitosis is an example of asexual reproduction.	True
True or False: There are 5 bases in DNA.	False
Which of these is an advantage of asexual reproduction? a) it produces variation b) it is quicker c) it requires time to find a mate	b) it's quicker
What occurs during transcription? a) the DNA is replicated b) a strand of mRNA is made, carrying the genetic code c) the cell starts to divide	b) a strand of mRNA is made, carrying the genetic code
What occurs during translation? a) the code from the mRNA is converted to a chain of Amino Acids b) the DNA is copied c) the cell starts to divide	a) the code from the mRNA is converted to a chain of Amino Acids
Which shows the correct order of the stages in protein synthesis? a) translation, transcription, protein folding b) protein folding, translation, transcription c) transcription, translation, protein folding	c) transcription, translation, protein folding
Which scientists were involved in the discovery of the structure of DNA?	Watson, Crick, Franklin
Which is NOT a base found in DNA? a) Uracil b) Thymine c) Cytosine	a) Uracil