1st Year Revision

What is the scientific method

• The scientific method is a systematic approach to inquiry that involves observation, hypothesis formulation, experimentation, and conclusion.
• A method used only in chemistry experiments.
• A way to memorize scientific facts without understanding.
• A random guessing technique for solving problems.

What is meant by term variable in a scientific experiment

• A variable in a scientific experiment is a factor that can change and affect the outcome.
• A variable is the final result of an experiment.
• A variable is a constant factor that does not change.
• A variable is a type of scientific measurement.

What is a controlled variable in an experiment

• A controlled variable is an outcome that is measured at the end of the experiment.
• A controlled variable is the main focus of the experiment.
• A controlled variable is a factor that changes during the experiment.
• A controlled variable is a factor that remains constant throughout an experiment.

What is a hypothesis

• A hypothesis is a testable statement or prediction

• A hypothesis is a random guess without any basis.
• A hypothesis is an untestable belief or opinion.
• A hypothesis is a definitive conclusion drawn from data.

Which of the following is good safety in the lab

• Using any type of clothing without regard for safety
• Ignoring emergency exits in the lab
• Eating and drinking in the laboratory
• Wearing a lab coat and googles

What part of the cell is known as the control centre of the cell

• Ribosome
• Mitochondria
• Endoplasmic Reticulum
• Nucleus

What is the liquid part of the cell called

• Cell membrane
• Nucleus
• Cytoplasm
• Mitochondria

Which type of cell has a cell wall

• Animal cells
• Plant cells

• Bacterial cells
• Protist cells

What is the function of the cell membrane

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

• The cell membrane is responsible for protein synthesis.
• The cell membrane provides energy for cellular processes.
• The cell membrane stores genetic information.

Where is the energy released from the cell

• Chloroplast
• Ribosome
• Nucleus
• Mitochondria