Grade 11 General Science

What is the atomic number of carbon?

• 3

• 7

• 12

• 6

Define Newton's first law of motion.

• An object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.

• An object will stop moving when no force is applied to it.

• An object will accelerate when no force is acting on it.

• An object will change direction when no force is present.

Explain the process of photosynthesis.

• Photosynthesis is the process of converting sound energy into chemical energy.

• Photosynthesis occurs only in animals.

• Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy stored in glucose molecules.

• Photosynthesis is a process that involves burning glucose.

What is the function of the mitochondria in a cell?

• Stores genetic material

• Produces energy (ATP) through cellular respiration

• Regulates cell division

• Synthesizes proteins

What is the difference between speed and velocity?

• Speed is a vector, velocity is scalar.

• Speed is scalar, velocity is vector.

• Speed and velocity are the same thing.

• Speed is a vector, velocity is a scalar.

Describe the structure of an atom.

• An atom consists of only protons in the nucleus with no neutrons or electrons

• An atom has a nucleus composed of protons and neutrons, with electrons orbiting around the nucleus in specific energy levels.

• The nucleus of an atom is made up of electrons with protons and neutrons orbiting around it

• Atoms have a single energy level where protons, neutrons, and electrons are randomly distributed

What is the role of DNA in genetics?

• DNA is only important for physical appearance, not genetics

• DNA has no impact on genetics

• DNA serves as the genetic material that stores and transmits hereditary information.

• DNA is only found in plants, not animals

Explain the concept of natural selection.

• Natural selection always results in the strongest organisms surviving.

• Natural selection is the process by which organisms that are better adapted to their environment tend to survive and reproduce more than those that are less adapted, leading to the perpetuation of favorable traits in a population over time.

• Natural selection is the process of humans selecting which organisms survive and reproduce.

• Natural selection only occurs in controlled laboratory settings.

What is the pH scale used for?

• Measuring the acidity or basicity of a solution.

• Calculating the volume of a solution

• Determining the color of a solution

• Measuring the temperature of a solution

Define the term 'ecosystem'.

• A community of living organisms in conjunction with the nonliving components of their environment.

• A type of weather pattern

• A group of unrelated organisms in a specific area

• The study of rocks and minerals