Theory

CH13 - EXCRETION IN HUMANS

A healthy kidney controls the excretion of urea and other waste products of metabolism from the blood. After kidney failure there are two possible tr...

2011 Summer

2

Theory

CH13 - EXCRETION IN HUMANS

What shows the sequence of organs through which urea passes as it travels from where it is produced to where it is removed from the blood? A kidneys ...

2012 Winter

4

Theory

CH13 - EXCRETION IN HUMANS

Which substance is lost from the body by the kidneys, lungs and skin?  A. carbon dioxide  B. excess ions  C. urea  D. water

2010 Winter

3

Theory

CH13 - EXCRETION IN HUMANS

Which process removes the waste products of metabolism from the body?  A. excretion  B. nutrition  C. reproduction  D. respira...

2009 Summer

2

Theory

CH13 - EXCRETION IN HUMANS

A healthy person eats a very high-protein diet. What effect will this have on their urine? A It will contain amino acids. B It will contain glucose....

2012 Winter

3

Theory

CH13 - EXCRETION IN HUMANS

The diagram shows a kidney and its blood vessels. In a healthy person, which structures transport glucose? A artery only B artery and ureter C a...

2009 Summer

2

Theory

CH13 - EXCRETION IN HUMANS

The diagram shows the human urinary system.   Which substance is not found in the liquid at X in a healthy person?  A glucose  B sa...

2012 Summer

5

Theory

CH13 - EXCRETION IN HUMANS

Which set of conditions would make the percentage of water in urine decrease the most?

2012 Summer

4

Theory

CH13 - EXCRETION IN HUMANS

Which materials are excreted by kidneys and lungs?

2011 Winter

2

Theory

CH13 - EXCRETION IN HUMANS

Blood passes through the kidney and some substances leave the blood as filtered liquid. From this liquid certain substances are reabsorbed back into t...

2009 Winter

3

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

(a) (i) State the name of the gas exchange surface in humans. ...........................................................................................

2022 Spring

3

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

(a) Fig. 2.1 is a photomicrograph showing the fertilisation of one human egg cell. [Image_1: Photomicrograph of fertilisation with label 'sperm']Descr...

2022 Spring

3

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

(a) A scientist investigated the effect of temperature on the mass of leaves picked from a tea plant, *Camellia sinensis*.• Three samples of leaves ...

2022 Spring

4

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

(a) Fig. 4.1 is a diagram of Vibrio cholerae, the bacterium that causes cholera. (i) Describe two similarities and two differences between a palisade ...

2022 Spring

3

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The Arabian oryx and the northern white rhinoceros are both mammals.Fig. 5.1 is a photograph of an Arabian oryx. Fig. 5.2 is a photograph of a norther...

2022 Spring

3

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

(a) Complete Table 6.1 to show the names, functions and sites of action of the three different digestive enzymes.Table 6.1| name of enzyme | function ...

2022 Spring

4

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

All living organisms release energy from nutrient molecules within their cells. What is the name of this characteristic?

2022 Summer

3

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

Which diagram shows a flower from a monocotyledon?

2022 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a cross-section through two guard cells of a leaf. Which labelled structures would also be found in an animal cell?

2022 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a cross-section through a leaf. Which label shows a tissue?

2022 Summer

1