Biology for nursing entrance exams worksheet with answers

Which substances are used up in aerobic cellular respiration?

1. ACarbon dioxide and water
2. BGlucose and oxygen
3. CGlucose and carbon dioxide
4. DOxygen and water

What is the main role of carbohydrates in the human diet?

1. ATo provide a quick source of energy
2. BTo carry the body's genetic information
3. CTo build muscle tissue
4. DTo form antibodies

Which protein gives strength to skin, tendons and bone?

1. AHaemoglobin
2. BMyosin
3. CAmylase
4. DCollagen

A student switches a light microscope from low power to high power. What happens to the field of view?

1. AIt gets larger but less detailed
2. BIt gets smaller and usually darker
3. CIt gets larger and brighter
4. DIt stays the same size but gets brighter

Human adult height varies across a smooth, continuous range rather than falling into a few separate groups. What is the best explanation?

1. AIt is controlled only by the environment
2. BIt is controlled by one gene with two alleles and full dominance
3. CIt is controlled by many genes and also affected by environment
4. DIt is an X-linked recessive trait

Why do the palisade cells near the top surface of a leaf contain many chloroplasts?

1. AThey protect the leaf from insects and strong winds
2. BThey carry sugars from the leaves down to the roots
3. CThey store most of the plant's water for dry periods
4. DThey get the most light and do most of the photosynthesis

A scientist wants to show that a particular microbe causes a disease. According to Koch's postulates, which step is needed?

1. AThe microbe grown from a sick host must cause the disease in a healthy host
2. BThe disease must be treated successfully with antibiotics
3. CThe microbe must be found in healthy hosts just as often as in sick hosts
4. DThe microbe must be seen in the blood under a light microscope

A food sample turns purple with biuret reagent but stays yellow-brown with iodine solution. What does the sample contain?

1. AStarch but no protein
2. BFat but no protein
3. CProtein but no starch
4. DBoth protein and starch