Circulatory System

Q.

Write the chemical equation of anaerobic respiration in yeast.

Q.

Write the functions of Circulatory system?

Q. Describe double circulation in human beings. Why is it necessary?

Q.

Name the correct substrates for the following enzymes:

(a) Trypsin

(b) Amylase

(c) Pepsin

(d) Lipase

Q.

Which enzyme present in saliva breaks down starch?

Q.

In mouth, saliva converts starch into

1. Glucose

2. Sucrose

3. Maltose

4. Lactose

Q. What separates the left and right side of the heart?

1. Auricle
2. Ventricle
3. Septum
4. Aorta

Q. Which of the following is the correct pathway of food movement in the digestive tract of a rabbit?

1. Oesophagus, large intestine, small intestine, rectum
2. Oesophagus, small intestine, large intestine, rectum
3. Small intestine, oesophagus, large intestine, rectum
4. Oesophagus, large intestine, rectum, small intestine

Q.

Question 3
How is oxygen and carbon dioxide transported in human beings?

Q.

Saliva in the mouth converts ________ into _________ .

1. proteins, amino acids

2. fats, vitamins

3. glycogen, glucose

4. starch, maltose

Q.

How is blood oxygenated in the lungs?

Q. Choose the correct statements from the following about dialysis.

1. The set-up consists of a number of tubes with fully permeable lining.
2. The set-up consists of a number of tubes with semi - permeable lining.
3. Waste products diffuse into the dialysing fluid from blood.
4. Glucose, salts, minerals and amino acid are reabsorbed.

Q.

What is the double circulatory system in humans?

Q.

Water evaporates through tiny structures present on the surface of leaves. These structures are known as:

1. tendrils

2. petiole

3. stomata

4. stalk

Q. Which among the following statements are correct regarding human excretion?

1. Urine is stored in the ureters until there is the urge to pass it out.
2. Bowman's capsule performs the first step in the filtration process.
3. Neuron removes the nitrogenous wastes from the body.
4. Re-absorption of the initial filtrate occur in the tubular region.

Q.

All vertebrates have a ……………..circulatory system.

Q.

Define circulatory system?

Q. Compare the digestive system of Leech and Rabbit.

Q.

Name the phase of the cardiac cycle in which the ventricles relax.

1. Ventricular diastole

2. Ventricular systole

3. Auricular diastole

4. Auricular systole

Q. Identify the parts labelled A, B, and C in the image.

1. A. Aorta
   B. Right Ventricle
   C. Left Atrium
2. A. Aorta
   B. Left Atrium
   C. Right Ventricle
3. A. Left Atrium
   B. Right Ventricle
   C. Aorta
4. A. Left Atrium
   B. Aorta
   C. Right Ventricle

Q. Male genital pore is present on the ______ segment.

1. 10th
2. 13th
3. 6th
4. 11th

Q.

Blood leaving the tissues become richer in a component. Name the component.

Q.

Which of these are the by-products of photosynthesis and respiration?

1. Carbon dioxide

2. Oxygen

3. Water

4. Nitrogen

Q.

What does the stomach do?

Q. What do the gastric glands present in the walls of the stomach release?

1. Hydrochloric acid
2. Mucus
3. Amylase
4. Pepsin

Q.

What Is Thalassemia Alpha?

Q.

Genetic disorder in Africans which reduces oxygen uptake is:

1. Phenylketonuria

2. Haemophilia

3. Colour blindness

4. Sickle cell anemia

Q. Mention any two main function of the blood.

Q. Which of the following statements are true regarding stomach?

Statement 1: Inside the stomach, proteins are digested by hydrochloric acid.

Statement 2: Stomach wall is protected by mucous membrane.

1. Only statement 1 is true
2. Only statement 2 is true
3. Both the statements are true
4. Both the statements are false

Q. explain the schematic respiration of gaseous exchange in tissues