Biology Semester 1 Exam

Front

What is the optimal temperature for enzyme activity based on the graph?

Back

30 C

Front

What is the role of gases in photosynthesis and cellular respiration?

Back

Cellular respiration uses oxygen and releases carbon dioxide, while photosynthesis uses carbon dioxide and releases oxygen.

Front

What amino acid is coded for by the codon GCA?

Back

Alanine

Front

Why do chromosomes have two chromatids?

Back

It allows the cell to divide into genetically identical daughter cells.

Front

What happens to the enzyme catalase during the breakdown of hydrogen peroxide?

Back

The enzyme would remain unchanged in any way.

Front

Define photosynthesis.

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

Front

What is cellular respiration?

Back

Cellular respiration is the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water.

Front

What is a codon?

Back

A codon is a sequence of three nucleotides in mRNA that corresponds to a specific amino acid.

Front

What is the function of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions without being consumed in the process.

Front

What is the significance of chromatids during cell division?

Back

Chromatids ensure that each daughter cell receives an identical set of chromosomes.