Unit 1 practice

Which of the following is NOT a component of a typical plant cell?

• Chloroplast

• Cell wall

• Mitochondrion

• Centriole

What is the main function of the plasma membrane in a cell?

• To provide structural support

• To regulate the movement of substances in and out of the cell

• To store genetic information

• To synthesise proteins

Which organelle is responsible for photosynthesis in plant cells?

• Mitochondrion

• Nucleus

• Chloroplast

• Ribosome

What is the primary role of enzymes in the digestive system?

• To absorb nutrients

• To speed up the breakdown of food molecules

• To transport oxygen

• To store energy

Which phase of the cell cycle involves the replication of DNA?

• G1 phase

• S phase

• G2 phase

• M phase

During which stage of mitosis do the chromosomes align at the equator of the cell?

• Prophase

• Metaphase

• Anaphase

• Telophase

What is the main function of stomata in plants?

• Absorption of water

• Gas exchange

• Storage of starch

• Transport of minerals

Which process describes the loss of water vapour from the aerial parts of plants?

• Photosynthesis

• Respiration

• Transpiration

• Germination

Which of the following best describes the scientific method?

• A set of beliefs about the natural world

• A systematic approach to investigating phenomena, acquiring new knowledge, or correcting previous knowledge

• A list of scientific facts

• A way to memorise scientific terms

Which of the following is a product of photosynthesis?

• Oxygen

• Carbon dioxide

• Lactic acid

• Urea