Biology Semester 1 Review

Front

What happens to chromosomes during metaphase of mitosis?

Back

Chromosomes line up along the equator of the cell.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down large, complex chemicals in dead organisms into small, simple chemicals.

Front

What is a codon?

Back

A codon is a three-nucleotide sequence that codes for an amino acid.

Front

What is the predicted percentage of homozygous recessive offspring in a genetic cross where both parents are heterozygous?

Back

50%.

Front

What is the function of ribosomes in a cell?

Back

Ribosomes are responsible for protein synthesis.

Front

What is the difference between mitosis and meiosis?

Back

Mitosis results in two identical daughter cells, while meiosis results in four genetically diverse gametes.

Front

Define the term 'genotype'.

Back

Genotype refers to the genetic makeup of an organism.

Front

What is the significance of the cell cycle?

Back

The cell cycle is crucial for growth, development, and repair in organisms.

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions in the body.

Front

What is natural selection?

Back

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.