Endterm 2 Review Science G8-G9

What is the most likely pH of a strong alkali?

• 7
• 8

• 1

• 14
• 3

The diagram shows an animal cell with two labels, Label 1 and Label 2.

Which correctly identifies Label 1 and Label 2?

Label 1: ​ (a)   ​ ​ and Label 2: ​ (b)  

• cytoplasm
• mitochondria
• cell membrane
• chloroplast

What is the correct formula for copper carbonate?

• CuO

• CuC

• CoC

Which of these is a non-contact force?

• friction

• air resistance

• magnetism

• upthrust

Which of these is caused by a lack of vitamin C?

• scurvy

• rickets

• blindness

• anaemia

Give the names of two types of particle that can be found in the nucleus of atoms.

• Electrons
• Protons

• Photons
• Quarks
• Neutrons

Pathogens can cause diseases in humans. Draw one straight line from each pathogen to the disease it is likely to cause.

Answer explanation

Pathogens can cause diseases in humans. Some parasites such as headlice are not pathogens. What is a parasite?

• An organism that helps the host organism by providing nutrients
• An organism that lives on or in a host organism and benefits by deriving nutrients at the host's expense.
• An organism that has no impact on the host organism
• An organism that only causes diseases in humans

Answer explanation

Name the organ responsible for pumping blood around the human body.

• stomach
• brain
• heart
• liver

Blood is transported around the body by arteries, capillaries and veins. What is the main function of veins?

• to transport oxygenated blood away from the heart

• to regulate blood pressure

• to filter impurities from the blood

• to carry deoxygenated blood back to the heart