Science S1 Final Practice

Front

Which organelle is found only in plant cells?

Back

Chloroplast

Front

What is the process called when homologous chromosomes exchange DNA during meiosis?

Back

Crossing over. DNA is swapped between non-sister chromatids.

Front

According to cell theory, where do new cells come from?

Back

Existing cells.

Front

What type of mutation causes Sickle Cell Anemia?

Back

Substitution.

Front

In which organelle does protein synthesis occur?

Back

Ribosome.

Front

What is the function of chloroplasts?

Back

Chloroplasts are responsible for photosynthesis in plant cells.

Front

What is the role of ribosomes in a cell?

Back

Ribosomes are the sites of protein synthesis.

Front

Define meiosis.

Back

Meiosis is a type of cell division that reduces the chromosome number by half, resulting in four haploid cells.

Front

What is the difference between sister chromatids and non-sister chromatids?

Back

Sister chromatids are identical copies of a chromosome, while non-sister chromatids are from homologous chromosomes.

Front

What is the main purpose of the cell membrane?

Back

The cell membrane controls the movement of substances in and out of the cell.