No questions found
Some yeast, sugar and water are mixed in a test-tube. The diagrams show the test-tube at the start and after one hour.
Which process causes this change?
518
524
575
The diagram shows an animal.
Use the key to identify the animal.
[Table_1]
542
514
585
Donkeys and zebras are different species. They can breed to produce an animal called a zedonk.
Zedonks are not fertile.
Which statement is correct?
550
545
510
Crabs are arthropods with 10 jointed legs and two pairs of antennae.
To which arthropod class do they belong?
513
561
527
Heart muscle cells have a high rate of metabolism.
Which structure do they require to be present in high numbers?
588
561
532
The diagram shows a fly.
The line XY represents the length of the wing.
The length of line XY is 26 mm.
The actual size of the wing between X and Y is 4 mm.
What is the magnification of the diagram?
558
553
568
What is an example of diffusion?
500
592
569
The diagram shows apparatus used to investigate osmosis.
The volumes of solutions A, B, C and D were the same at the start of the investigation.
After one hour, the solutions had moved up the glass tubes.
Which solution was the most concentrated at the start of the investigation?
523
597
541
Which row describes active transport?
[Table_1]
554
577
587
Iodine solution is added to a food sample that contains starch.
What is the colour of the sample after the iodine solution has been added?
516
506
525
Which graph shows the effect of temperature on the activity of an enzyme?
550
593
526
Which of these statements about enzymes are correct?
1 enzymes are proteins
2 enzymes are used up during chemical reactions
3 enzymes speed up metabolic reactions
505
553
576
The diagram shows a cross-section of part of a leaf.
Which cell controls the rate of gas exchange?
523
544
504
The diagram shows two cells.
Which process happens in only one of these cells?
566
582
503
Which organ is part of the digestive system?
556
564
595
The diagram shows the human alimentary canal.
Where is most digested food absorbed into the blood?
536
539
563
Which layer is dentine in the diagram of a human tooth?
528
508
517
The diagram shows a human jaw.
Which labelled tooth is an incisor?
579
599
559
Where does protease act?
537
565
529
Which statement describes transpiration?
590
532
591
Which statement describes the circulation of blood in the human body?
573
567
513
Which method of pathogen transmission is direct?
510
565
530
Which statement describes anaerobic respiration?
507
530
531
Which organ is responsible for the excretion of urea in the human body?
573
581
587
Which part of the eye contains light receptors?
554
505
542
Which row shows the effects of adrenaline secretion?
[Table_1]
561
502
553
A plant pot is placed on its side.
Which diagram shows a plant with roots showing gravitropism and shoots showing phototropism?
538
509
513
The graph shows how the percentage effectiveness of antibiotic F against MRSA bacteria varied between 1980 and 2000.
What is a correct conclusion from the graph?
550
581
556
Which statement describes asexual reproduction?
548
553
557
What is the function of the acrosome in a sperm cell?
505
552
591
Which diagram shows fertilisation?
525
599
575
What is HIV?
591
504
549
What describes an allele?
576
500
530
The images show four animals.
Which two animals show adaptive features for being secondary consumers?
579
532
545
A gene is added to the genetic material of an avocado plant.
This gene makes the avocado fruits stay ripe for longer before they start to decompose.
What is this process an example of?
1 adaptation
2 genetic modification
3 selective breeding
591
535
526
The diagram shows a food chain.
$\text{plant leaf} \rightarrow \text{slug} \rightarrow \text{frog} \rightarrow \text{fox}$
Which terms describe the position of the fox in this food chain?
[Table_1]
544
557
596
These are processes found in the carbon cycle.
• combustion
• decomposition
• feeding
• photosynthesis
• respiration
How many of these processes release carbon dioxide into the atmosphere?
516
512
592
Which change occurs when areas of forest are cleared for farming?
538
529
514
What is a use of ethanol?
509
596
599
The diagram shows a label found on a container of biological washing powder.
Which stains does the washing powder remove?
[Table_1]
540
599
510
