bio exam

Question 1

Can you identify an experiment’s controlled, independent and dependent variables from a scenario?

Answer 1

The independent variable causes an effect on another factor. Since this other factor changes in response to the independent variable, that factor is considered to be the dependent variable. temperature, weight, time

Question 2

Can you describe the word and balanced chemical equations for photosynthesis?

Answer 2

6CO2+6H2O→C6H12O6+6O2
Carbon dioxide + Water —- Glucose + oxygen

Question 3

Can you identify the reactants and products of photosynthesis?

Answer 3

light energy converts carbon dioxide and water (the reactants) into glucose and oxygen (the products)

Question 4

Can you explain the importance of photosynthesis to living organisms?

Answer 4

releasing oxygen into the atmosphere and providing energy for food chains

Question 5

Can you label the parts of a plant cell?

Answer 5

Cell Wall, Mitochondria, Ribosomes, Nucleus, Cell membrane, Plastids, chloroplasts, rough endoplasmic reticulum, smooth endoplasmic reticulum, vacuole

Question 6

Can you label the external and internal structure of a dicot leaf?

Answer 6

tip, midrib, margin, vein, petiole, lamina

Question 7

define the terms monomer and polymer.

Answer 7

A monomer is a single atom
A polymer is a large molecule made by bonding a series of building blocks.

Question 8

what is a diet?

Answer 8

Diet refers to the total amount of food consumed

Question 9

what is nutrition?

Answer 9

Nutrition is the process of taking in food and converting it into energy and other vital nutrients required

Question 10

Can you explain, using examples, the
importance of a balanced diet for good health?

Answer 10

Control Body Weight, Fight Off Disease, Have More Energy, Sleep Better, More Brain Power

Question 11

what are incisors?

Answer 11

teeth at the front of the upper and lower jaws used to scrape or tear food objects into smaller particles.

Question 12

what are Canines?

Answer 12

They’re pointier than other types of teeth and have four teeth (upper right and left, lower right and left). Canine teeth help you tear into foods like meat and crunchy vegetables.

Question 13

what are Premolars?

Answer 13

permanent teeth located between the molars in the back of your mouth and primarily grind and break up food

Question 14

what are Molars?

Answer 14

larger than premolars towards the back of the mouth, with broad, flat surfaces that grind food.

Question 15

what are the parts of the tooth?

Answer 15

crown, neck, root, enamel, dentin, pulp and cementum

Question 16

Can you distinguish between a single and double
circulatory system from an illustration?

Answer 16

In single circulation, the blood passes through a single circuit. In a double circulatory system blood passes through the heart twice for every complete circuit of the body

Question 17

Can you label the structures of a human heart?

Answer 17

The heart is made up of four chambers: two upper chambers known as the left atrium and right atrium and two lower chambers called the left and right ventricles. It also comprises four valves: the tricuspid, pulmonary, mitral, and aortic valves.

Question 18

Can you outline the pathway of a red blood cell
takes in two loops through the heart?

Answer 18

Red blood cells pick up oxygen in the lungs. Blood travels away from the heart and lungs through the arteries. Red blood cells drop off oxygen to the cells through tiny tubes called capillaries. Blood then returns to the heart through the veins and the cycle begins again

Question 19

Can you relate the structure of blood
and the function?

Answer 19

Red blood cells are responsible for carrying oxygen and carbon dioxide. Platelets are responsible for blood clotting. White blood cells are part of the immune system and function in an immune response.

Question 20

what are the components of blood?

Answer 20

Plasma is the main component of blood and consists mostly of water, with proteins, ions, nutrients, and wastes mixed in.