AS & A Level · Cambridge 9700

Biology 9700

5,943 practice questions with worked solutions, organised by topic and past-paper session. Practise any question and get your answer marked instantly.

Practise by topic

Cell structure The microscope in cell studies Cells as the basic units of living organisms Biological molecules Testing for biological molecules Carbohydrates and lipids Proteins Water Enzymes Mode of action of enzymes Factors that affect enzyme action Cell membranes and transport Fluid mosaic membranes Movement into and out of cells The mitotic cell cycle Replication and division of nuclei and cells Chromosome behaviour in mitosis Nucleic acids and protein synthesis Structure of nucleic acids and replication of DNA Protein synthesis Transport in plants Structure of transport tissues Transport mechanisms Transport in mammals The circulatory system Transport of oxygen and carbon dioxide The heart Gas exchange The gas exchange system Infectious diseases Infectious diseases Antibiotics Immunity The immune system Antibodies and vaccination Energy and respiration Energy Respiration Photosynthesis Photosynthesis as an energy transfer process Investigation of limiting factors Homeostasis Homeostasis in mammals Homeostasis in plants Control and coordination Control and coordination in mammals Control and coordination in plants Inheritance Passage of information from parents to offspring The roles of genes in determining the phenotype Gene control Selection and evolution Variation Natural and artificial selection Evolution Classification, biodiversity and conservation Classification Biodiversity Conservation Genetic technology Principles of genetic technology Genetic technology applied to medicine Genetically modified organisms in agriculture

By past paper

Feb/March 2018 Feb/March 2017 Feb/March 2016

Example questions

A student has produced a drawing of a cell structure as observed with a light microscope. The drawing has a magnification of $\times 600$. On the drawing, the structure measures $6\ \text{mm}$. What is the true length of the cell structure?

The microscope in cell studies · Feb/March 2016

When proteins are combined with certain organic solvents, hydrophobic interactions and hydrogen bonding change within the protein molecules. Which levels of protein structure would be affected?

Proteins · Feb/March 2016

The speed of enzyme-catalysed reactions in human cells is controlled. What might be involved in this control?

Factors that affect enzyme action · Feb/March 2016

The graphs illustrate how temperature and pH affect enzyme activity. Which statement correctly explains the enzyme activity?

Factors that affect enzyme action · Feb/March 2016

Which statement accurately describes how competitive enzyme inhibitors act?

Mode of action of enzymes · Feb/March 2016

Which row shows the correct association between molecules in the cell surface membrane and their functions?

Fluid mosaic membranes · Feb/March 2016

Antimycin is a chemical that stops mitochondria from working. Which methods of transport across the cell surface membrane would be inhibited by antimycin?

Movement into and out of cells · Feb/March 2016

Which statements regarding the cell cycle are correct?

Replication and division of nuclei and cells · Feb/March 2016

The diagram illustrates cells at various phases of the cell cycle. Which stage comes immediately before cytokinesis?

Chromosome behaviour in mitosis · Feb/March 2016

Of the structures listed, how many normally have genetic material containing telomeres? • bacterial cell • chloroplast • mitochondrion • nucleus

Structure of nucleic acids and replication of DNA · Feb/March 2016