Edexcel GCSE Biology Paper 1 Foundation November 2020 question paper 1BI0/1F

Some foods contain starch.

Which chemical is used to test for starch?

Benedict’s solution is used to test for reducing sugars in food.

Figure 1 shows part of the method for this test.

Give two safety precautions needed when doing this test.

Give one reason for placing the test tube in boiling water.

Figure 2 shows some information about the results of the test for reducing sugar.

A student wanted to compare the amount of reducing sugar in three types of biscuit.

Give one variable the student should control.

Figure 3 shows the student’s results.

State two conclusions that can be made from the data in Figure 3.

Figure 4 shows three cells.

What is structure X ?

The bacterial cell in Figure 4 has a flagellum.

State the function of a flagellum.

Give one other difference between the bacterial cell and the animal cell shown in Figure 4.

Substances move into and out of cells.

How does oxygen move into and out of cells?

A plant leaf cell is 0.04 mm long.

Calculate the length of the image after this cell has been magnified 500 times.

Figure 5 shows the area of land used to grow genetically modified (GM) crops worldwide from 2005 to 2014.

In 2009, the area of land used was 134 million hectares and in 2010 the area of land was 147 million hectares.

Complete Figure 5 by drawing bars to show the area of land used in 2009 and 2010.

Describe the trend shown by the data in Figure 5.

GM crops often produce a larger yield than non-GM crops.

Give one reason why this could reduce the destruction of forests.

The ladybird is a predator.

Aphids are insect pests.

Figure 6 shows a ladybird feeding on aphids.

Figure 6

Using ladybirds to control insect pests is an example of

Explain one advantage of using predators to control insect pests.

Some crop plants are genetically modified to make them resistant to attack by insect pests.

State one disadvantage of genetically modified crop plants.

A student placed three different sized cubes of agar jelly into separate beakers containing the same concentration of hydrochloric acid.

The cubes contained a pink indicator.

This indicator becomes clear when in contact with an acid.

Figure 7 shows the results of the investigation after the cubes had been in the acid for 120 seconds.

The distance from the outside of cube B to the pink area was 3 mm.

Calculate the distance diffused by hydrochloric acid in one second.

The student wanted to confirm their results.

Give one improvement the student should make to this investigation to confirm their results.

Devise a method, using cubes of agar jelly, to investigate how temperature affects the rate of diffusion.

Some substances move into and out of cells by active transport.

Which is the correct description of the movement of a substance by active transport?

Some drugs used to treat cancer are taken into cells by active transport.

Figure 8 shows some causes of preventable cases of cancer in 2015.

What is the percentage of preventable cases of cancer that are caused by tobacco?

In 2015, data from Cancer Research UK suggested that 163 440 cases of cancer could have been prevented.

Calculate the number of preventable cases of cancer caused by alcohol.

Give your answer to the nearest whole number.

number of preventable cases of cancer caused by alcohol_........

Farmers selectively breed chickens to produce larger chickens.

Figure 9 shows how the size of chickens has changed over time.

Explain how farmers have used selective breeding to produce larger chickens.

Describe one benefit and one risk of selectively breeding chickens.

The body cells of chickens have 78 chromosomes in their nuclei.

State the number of chromosomes found in each sex cell of a chicken.

Name the type of cell division which produces sex cells.

What is the correct definition of a genome?

A new project called the Earth BioGenome Project aims to discover the sequence of bases in the DNA for all plants and animals.

State two benefits of discovering the sequence of bases for all plants and animals.

A student investigated the activity of a human enzyme at different temperatures.

The student measured the mass of product formed after 10 minutes at different temperatures.

Figure 10 shows the results of this investigation.

Describe the trends shown in Figure 10.

Explain the results obtained for temperatures from 40 °C to 60 °C.

Some enzymes are involved in the breakdown of food substances.

Draw one straight line from each food group to the products of digestion for that food group.

Which enzyme breaks down fat?

Figure 11 shows an enzyme and two substrates, P and Q.

Explain the reason why no product will be formed if the enzyme is mixed with substrate Q.

Which part of the eye carries impulses to the brain?

Name the structure within the eye that controls the amount of light entering the eye.

Explain the functions of the two types of cell in the retina that detect light.

The eye can be infected by bacteria.

State the type of drug used to treat infections caused by bacteria.

*(d) Figure 12 shows two defects of the eye.

Describe the causes of short-sightedness and long-sightedness.

Use information from Figure 12 to help with your answer.

Measles is a communicable disease caused by a virus.

What can a virus also be classified as?

Give one reason why measles is described as a communicable disease.

The human immunodeficiency virus (HIV) can cause AIDS.

Which type of cell is destroyed by the HIV virus?

Describe how the specific immune system defends the body against disease.

Figure 13 shows the number of people per million of the population in five European countries who were diagnosed with measles in one year.

The population of Belgium in that year was 11.18 million.

Calculate the number of people in Belgium diagnosed with measles.

Give your answer to three significant figures.

Countries do not report the total number of people diagnosed with measles. Countries report the number of people diagnosed with measles per million of the population.

Give one reason why this is better.

Give one reason why the number of people per million diagnosed with measles is different in these countries.

Figure 14 shows a banana plantation.

After the bananas have been harvested, the old plants are cut down.

The suckers then develop into mature plants producing the next crop of bananas.

The tip of each sucker contains a group of cells called a meristem.

Describe the function of a meristem in the growth of a plant.

A student took a sample of cells from a meristem to view under a light microscope.

Describe how the student would prepare a microscope slide using these cells.

Figure 15 is a drawing of a eukaryotic cell.

Structure Z is found in plant leaf cells.

Name structure Z.

Give one function of the mitochondrion.

*(c) DNA is found in the nucleus of cells.

Describe the structure of DNA and how it can be extracted from plant cells.

Gregor Mendel used pea plants in plant breeding experiments. He discovered the basis of genetic inheritance.

He cross-bred tall pea plants with short pea plants.

All the offspring were tall, as shown in Figure 16.

Explain why the offspring are all tall.

In this investigation, the parent pea plants were grown in a warm, closed greenhouse.

Give two reasons why the parent pea plants were grown in a warm, closed greenhouse.

Pea plants produce different coloured peas.

The allele for yellow‑coloured peas (A) is dominant to the allele for green‑coloured peas (a).

Two heterozygous parent plants were used in a genetic cross.

Predict, using the Punnett square, the percentage probability that this cross will have offspring that produce green‑coloured peas.

Explain one advantage to pea plants of using sexual reproduction to produce offspring.

Peas contain small amounts of fat.

Describe a test to identify fat.