SFSU BIO 230 ACTUAL EXAM 2026
QUESTIONS WITH CORRECT ANSWERS
GRADED A+
◉ Chromosome. Answer: A long, thread-like structure composed of
DNA and proteins carrying genetic information in the form of genes.
◉ Codon. Answer: A sequence of three nucleotides in mRNA specifying
an amino acid or a start/stop signal in protein synthesis.
◉ Covalent Bond. Answer: A chemical bond formed when two atoms
share a pair of electrons.
◉ Cytosine. Answer: A nitrogenous base found in DNA and RNA,
pairing with guanine.
◉ DNA (Deoxyribonucleic Acid). Answer: A molecule carrying genetic
instructions for growth, development, and functioning of living
organisms.
◉ Double Helix. Answer: The structure of DNA characterized by two
strands coiled around each other.
, ◉ Gene. Answer: A unit of heredity transferred from a parent to
offspring, determining some characteristic of the offspring.
◉ Genetically Modified Organism (GMO). Answer: An organism with
altered genetic material using genetic engineering techniques.
◉ Genome. Answer: The complete set of genes or genetic material
present in a cell or organism.
◉ Non-Coding DNA. Answer: DNA regions not coding for proteins but
with regulatory and other functions.
◉ Tumor. Answer: An abnormal growth of tissue that can be benign or
malignant.
◉ Metastasis. Answer: The spread of cancer cells from the original site
to other parts of the body.
◉ Telomeres. Answer: Protective caps at the end of chromosomes,
shortening with each cell division and playing a role in aging.
◉ Telomerase. Answer: An enzyme that adds DNA sequence repeats to
telomeres, extending their length and enabling indefinite cell division.
QUESTIONS WITH CORRECT ANSWERS
GRADED A+
◉ Chromosome. Answer: A long, thread-like structure composed of
DNA and proteins carrying genetic information in the form of genes.
◉ Codon. Answer: A sequence of three nucleotides in mRNA specifying
an amino acid or a start/stop signal in protein synthesis.
◉ Covalent Bond. Answer: A chemical bond formed when two atoms
share a pair of electrons.
◉ Cytosine. Answer: A nitrogenous base found in DNA and RNA,
pairing with guanine.
◉ DNA (Deoxyribonucleic Acid). Answer: A molecule carrying genetic
instructions for growth, development, and functioning of living
organisms.
◉ Double Helix. Answer: The structure of DNA characterized by two
strands coiled around each other.
, ◉ Gene. Answer: A unit of heredity transferred from a parent to
offspring, determining some characteristic of the offspring.
◉ Genetically Modified Organism (GMO). Answer: An organism with
altered genetic material using genetic engineering techniques.
◉ Genome. Answer: The complete set of genes or genetic material
present in a cell or organism.
◉ Non-Coding DNA. Answer: DNA regions not coding for proteins but
with regulatory and other functions.
◉ Tumor. Answer: An abnormal growth of tissue that can be benign or
malignant.
◉ Metastasis. Answer: The spread of cancer cells from the original site
to other parts of the body.
◉ Telomeres. Answer: Protective caps at the end of chromosomes,
shortening with each cell division and playing a role in aging.
◉ Telomerase. Answer: An enzyme that adds DNA sequence repeats to
telomeres, extending their length and enabling indefinite cell division.
