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What are characteristics of all organisms?
546
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542
The scientific name for the golden eagle is \textit{Aquila chrysaetos}. What is the genus of the golden eagle?
586
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533
The diagram shows four arthropods.
[Image_1: Diagram with Pediculus, Anopheles, Dermacentor, Carcinus]
How many of these arthropods are insects?
588
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513
Which row shows structures that are present in both root hair cells and palisade mesophyll cells? [Table_1]
587
518
593
The diagram shows a cell at \times 1500 magnification. What is the actual size of the cell?
574
581
547
The diagram shows a test-tube containing clear jelly. A drop of blue ink is injected into the middle of the jelly.
The blue colour of the ink spreads throughout the jelly.
By which process does the blue ink spread through the jelly?
529
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549
The diagram shows some of the apparatus used in an osmosis investigation. In this investigation a dialysis tubing bag was filled with sucrose solution, sealed and weighed. The dialysis tubing bag was then immersed in distilled water for one hour. After one hour the dialysis tubing bag was removed from the beaker, the surface was dried and the bag was reweighed. Which row explains what will happen during the investigation? [Table_1]
519
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542
Which row describes active transport of ions? [Table_1]
600
555
539
The diagram shows part of a protein molecule.
What does X represent?
574
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534
What is true of all enzymes? [Table_1]
548
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550
What is the substrate for enzyme X?
594
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521
An experiment is set up to investigate gas exchange in aquatic plants. The hydrogencarbonate indicator solution is orange at the start. Which colour is it after three hours?
579
547
517
How are most leaves adapted for photosynthesis?
538
584
543
The haemoglobin concentration in the blood of a person is 80 g/dm$^3$. The accepted normal concentration is 120 g/dm$^3$ or above.
Which substance may be lacking in their diet?
561
500
584
Which statement about physical digestion is correct?
587
538
533
Solid food enters the mouth at P and enters the oesophagus at Q. How does the food at Q differ from the food at P?
513
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592
Which row shows the functions of xylem and phloem? [Table_1]
582
578
504
What is the effect on a plant of not having any root hairs?
555
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517
Which statements describe how the structures in the circulatory system function? 1. a muscular pump to push blood into vessels 2. valves to ensure one-way blood flow 3. veins to take blood away from the heart 4. vessels to return blood to the heart
537
554
559
The diagram shows a section through the heart. Which part is the septum?
521
533
594
What is an example of good personal hygiene in the kitchen?
521
541
503
What is the pathway of expired air as it travels out of the body?
593
585
519
The diagram shows the activity of some yeast cells in a sugar solution.
Which statement explains what happens to the limewater?
501
562
520
What is the word equation for aerobic respiration?
561
581
512
Which part of the body excretes urea, excess water and excess ions?
536
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599
The diagram shows the kidneys and associated organs. Which label is the ureter?
508
599
551
What is the name of the junction between two neurones?
596
537
505
Which statement about adrenaline is correct?
504
517
538
Which words complete the statements?
Plant growth towards light is called ......1.......
When a plant shoot grows towards a light source, it is showing a ......2...... to light.
Light acts as the ......3.......
548
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559
Which statements about antibiotics are correct?
1. Antibiotics can be used to treat bacterial infections.
2. Antibiotics can be used to treat viral infections.
3. Antibiotics are not effective against resistant bacteria.
556
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571
Which statement about sexual reproduction is correct?
508
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540
Which row about asexual reproduction is correct? [Table_1]
583
524
582
What is defined as a length of DNA that codes for a protein?
584
531
546
A man has three sons. What is the chance of his next child being a daughter?
592
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598
Which term is a genetic change?
518
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561
The diagram shows energy flow from the Sun, through a food chain and into the environment. [Image_1: Energy flow diagram with arrows labeled 1 and 2 from Sun to plant to animal to animal] What is the form of energy for each numbered arrow?
568
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591
In a pyramid of numbers, what does the top of the pyramid represent?
599
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569
A few yeast cells were placed in a container of nutrient solution. The graph shows how their population size changed over time. Which row shows when the reproduction rate was greater than the death rate for the numbered phases on the graph? [Table_1]
546
572
590
The bloodworm is an organism that is found in heavily polluted water. The diagram shows where raw sewage flows into a river. Where would there be fewest bloodworms?
510
583
560
Which statement about genetic modification is correct?
567
570
569
