a waste product created in the process of breaking down excess proteins and amino acids

the liquid part of the blood which contains dissolved nutrients and waste products

the organ in the excretory system which filters waste products from blood plasma and controls water balance

the organ system responsible for removing waste from blood plasma

a combination of waste urea, water and other substances which is stored in the bladder until urinated

Controlling water balance: the kidneys, and nephron structure

Biology

Effect of osmosis and sugar concentration on the mass of plant tissue: practical

Effect of osmosis and sugar concentration on the mass of plant tissue: analysis

Using a microscope to observe effects of osmosis in plant cells: practical

The importance of maintaining constant conditions in the body

The importance of maintaining constant conditions in the body, including osmosis

The role of the skin in thermoregulation

Pupils will learn about factors that affect the rate of photosynthesis in plants, including temperature, light intensity and carbon dioxide concentration.

Pupils learned how substances essential for chemical reactions, and the products of the reactions, are transported into, around and out of plants, and about factors affecting the rate of water uptake by a plant.

This unit covers the importance of maintaining a constant internal environment, focusing on body temperature control, osmotic balance, and kidney function. It explains the roles of the skin, kidneys, and ADH, and emphasises data extraction, experiment techniques, and accurate data interpretation.

Coordination and control: maintaining a constant internal environment

Which body system are the kidneys part of?

Which of the following are too large to leave the blood during the filtering process?

Which substances are filtered from the blood and removed from the body in urine?

Which substances are reabsorbed by the kidney tubules?

Match each part of the kidney tubule (nephron) to its correct name.

If you drink too much water, which of these will happen?

contains dissolved substances such as glucose and ions

Match the constituent of blood to its description.

Label these parts of the excretory system.

The process that uses glucose as a fuel to transfer energy for life processes is called cellular {{}}.

Controlling water balance: the kidneys, and nephron structure

Lesson outcome