Quizs to Review for Q3 Assessment

What is the structure of DNA?

• A single strand of amino acids.

• A double helix composed of nucleotides.

• A triple helix of proteins.

• A circular structure of lipids.

What are cells?

• The basic structural, functional, and biological units of all living organisms.

• The smallest unit of matter that retains the properties of an element.

• A type of tissue that forms the protective outer layer of organs.

• A group of similar cells that perform a specific function.

How many chromosomes in a human ovum (egg)?

• 20 chromosomes

• 22 chromosomes

• 23 chromosomes

• 24 chromosomes

What is the role of helicase in the replication of DNA?

• Helicase unwinds the DNA double helix.

• Helicase synthesizes new DNA strands.

• Helicase repairs damaged DNA.

• Helicase transports DNA across the cell membrane.

What happens during the G1 phase of the cell cycle?

• The cell divides into two daughter cells.

• The cell grows and synthesizes proteins necessary for DNA replication.

• The cell undergoes DNA replication.

• The cell prepares for mitosis by condensing its chromosomes.

How are genes inherited?

• Through the transmission of genetic material from parents to offspring.

• Through random mutations in the DNA sequence.

• By environmental factors influencing genetic traits.

• Through the mixing of parental traits without genetic material transfer.

How many pairs of chromosomes do humans have?

• 20 pairs

• 22 pairs

• 23 pairs

• 24 pairs

What happens during the M phase of the cell cycle?

• Mitosis occurs, leading to the division of the cell into two daughter cells.

• DNA replication takes place, preparing for cell division.

• The cell grows and synthesizes proteins necessary for division.

• The cell undergoes apoptosis, leading to programmed cell death.

What is a pedigree chart?

• A diagram that shows the occurrence of a genetic trait in several generations of a family.

• A type of graph used to represent statistical data.

• A chart that outlines the family tree without genetic information.

• A visual representation of a single individual's genetic makeup.

What is the importance of mRNA?

• It carries genetic information from DNA to the ribosome for protein synthesis.

• It helps in the replication of DNA.

• It serves as a structural component of the ribosome.

• It transports amino acids to the nucleus.