Biology Mar 24 P12

What is a characteristic of all living organisms?

Which letter in the key identifies the flowering plant shown in the diagram?

Which feature identifies this animal as a mammal?

Which structure do all these cells have?

What is the actual size of the insect?

Which factor would increase the rate of diffusion of oxygen molecules out of a photosynthesising leaf?

Which process only involves the movement of water through the partially permeable membrane of a cell?

Which statement about active transport is correct?

DCPIP can be used to test for vitamin C in food. Lemon juice contains vitamin C. When lemon juice is tested with DCPIP what are the results?

Which reagent is used to test for the presence of protein in food?

What does the graph show?

In which tube are photosynthesis and respiration taking place at the same time?

Which of these options is correct?

Which type of cell is shown?

Which option is correct regarding the classification of a specific biological entity?

The diagram shows the digestive system and some of its associated organs. Which label identifies the liver?

Which statements about teeth are correct? 1 Canine teeth are for chewing and grinding food. 2 Incisor teeth are for biting and cutting food. 3 Premolar teeth are for chewing and grinding food.

What is the definition of chemical digestion?

In which part of the alimentary canal does hydrochloric acid provide an acid pH for enzymes?

Which tissue has the function of providing support for a plant?

Which graph shows the effect of increasing wind speed on the rate of transpiration?

What ensures one-way flow of blood in the circulatory system?

In which order will red blood cells flow through these vessels when travelling from the right ventricle to the left atrium of the heart?

What is the explanation for the difference in the ECG traces?

Statements about pathogens are given. 1 A pathogen is a disease-causing organism. 2 All pathogens are bacteria. 3 A pathogen can be transmitted by indirect contact through contaminated food. Which statements are correct?

Which structure in the breathing system has the thinnest wall?

What are the products of aerobic respiration?

What are the products of anaerobic respiration in yeast?

Some excretory products are listed. 1 carbon dioxide 2 excess ions 3 excess water 4 urea Which products are excreted by the kidneys?

A person touches a sharp object. The person immediately pulls their hand away. Which row shows the correct description of the term?

Which structure focuses light on the retina?

Which statements describe adrenaline and its effects on the human body? 1 Pupil diameter becomes smaller. 2 Breathing rate decreases. 3 Heart rate increases. 4 Adrenaline is transported in the blood.

Which statements about drugs are correct? 1 Drugs affect or modify chemical reactions in the body. 2 Drugs called antibiotics can be used to kill bacteria. 3 Drugs called antibiotics can be used to kill viruses.

At which point in the diagram does fertilisation happen?

The seed shape of peas can be smooth or wrinkled. The allele for smooth is dominant and the allele for wrinkled is recessive. Two heterozygous plants are crossed. What is the expected percentage of offspring with a smooth shape?

Which human phenotype is caused by genes only?

What is a correct ecological definition?

Which action will decrease the population of an endangered animal species in a habitat?

Which row shows two reasons why bacteria are used in genetic modification?

Which row shows uses of genetic modification?