Biology Concepts and Functions

This video covers the AQA GCSE Biology Paper 1, detailing cell structures, differences between prokaryotic and eukaryotic cells, the use of microscopes, and specialized cells. It explains diffusion, osmosis, and active transport, and delves into the human circulatory system, communicable and non-communicable diseases, and the processes of photosynthesis and respiration.

Which part of the animal cell controls the entry and exit of substances?

• Ribosomes

• Cell membrane

• Mitochondria

• Nucleus

What is the main function of the chloroplasts in plant cells?

• Absorbing light energy for photosynthesis

• Controlling cell activities

• Aerobic respiration

• Protein synthesis

What is the primary purpose of using a light microscope?

• To measure the weight of cells

• To heat cell samples

• To change the color of cell samples

• To magnify images of cell structures

Which type of stem cells can differentiate into nearly any type of animal cell?

• Bone marrow stem cells

• Embryonic stem cells

• Plant stem cells

• Adult stem cells

What enzyme breaks down starch into glucose in the mouth?

• Pepsin

• Amylase

• Lipase

• Protease

What is the primary function of the left ventricle in the human heart?

• To pump oxygenated blood to the lungs

• To receive deoxygenated blood from the body

• To regulate the heart rate

• To pump oxygenated blood to the rest of the body

Which of the following is a risk factor for coronary heart disease?

• Healthy diet

• Low blood pressure

• Regular exercise

• High cholesterol

How can the spread of measles be prevented?

• Using antibiotics

• Using mosquito nets

• Vaccinating young children

• Washing hands frequently

What is the role of chlorophyll in photosynthesis?

• To absorb light energy

• To transport water

• To release oxygen

• To produce glucose

Which of the following is a symptom of rose black spot in plants?

• Formation of tumors

• Increased growth

• Production of ethanol

• Yellowing of leaves