Quiz Biology
IMAT Biology: Cell Biology & Genetics
English-language IMAT biology drill.
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Question 1
Which molecule carries genetic information from DNA to ribosomes during protein synthesis?
- mRNA
- Glucose
- ATP synthase
- Cholesterol
Question 2
During mitosis, sister chromatids separate mainly in which phase?
- Anaphase
- Prophase
- Interphase
- Telophase only after cytokinesis
Question 3
A heterozygous genotype contains what?
- Two different alleles for a gene
- No alleles for a gene
- Only mitochondrial DNA
- A duplicated cell membrane
Question 4
Which organelle is the main site of aerobic respiration in eukaryotic cells?
- Mitochondrion
- Golgi apparatus
- Nucleolus
- Lysosome
Question 5
What is the complementary DNA strand to 5'-ATGC-3'?
- 3'-TACG-5'
- 3'-UACG-5'
- 5'-ATGC-3' only
- 3'-CGTA-5'
Question 6
Which process produces gametes with half the chromosome number?
- Meiosis
- Binary fission in all animals
- Translation
- Osmosis
Question 7
The genetic code is described as degenerate because what is true?
- More than one codon can code for the same amino acid
- Proteins are made only from DNA
- Every codon codes for several amino acids at once
- Codons contain four bases each
Question 8
Which structure controls movement of substances into and out of the cell?
- Plasma membrane
- Chromosome
- Ribosomal RNA only
- Nuclear pore as the entire cell boundary
Question 9
Which enzyme unwinds DNA strands during replication?
- Helicase
- Ligase as the primary unwinder
- Pepsin
- Amylase
Question 10
Crossing over during meiosis increases what?
- Genetic variation
- The number of cell membranes in bacteria
- The pH of cytoplasm to 14
- The number of amino acids in all proteins
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