No questions found
All living organisms release energy from nutrient molecules within their cells.
What is the name of this characteristic?
544
540
553
The horse, Equus ferus, and the donkey, Equus asinus, are able to interbreed. The offspring they produce is called a mule.
Which statement is correct?
551
553
589
The diagram shows an organism.
Which type of arthropod is this organism?
503
597
545
The diagram shows a cross-section through two guard cells of a leaf.
Which labelled structures would also be found in an animal cell?
554
552
584
The diagram shows a cross-section through a leaf. Which label shows a tissue?
537
521
556
A student found four different worms in a sample of soil and drew diagrams of them. The diagrams were drawn with different magnifications. Which worm was the longest? [Table_1]
586
502
514
Which statement describes the net movement of particles during diffusion?
556
501
549
The diagram shows a section through a mesophyll cell of a leaf.
Which part is partially permeable?
545
526
588
What are the smaller basic units of starch and glycogen molecules?
501
589
502
Some terms used to describe enzyme-controlled reactions are listed.
1 catalyst
2 product
3 protein
4 substrate
Which terms describe an enzyme?
569
544
541
The diagram shows two food tests being carried out on solution X.
Which nutrients are present in solution X?
562
580
592
Which chemical is a product of photosynthesis that moves out of a green leaf through its stomata?
502
526
508
Which tissues are found in vascular bundles?
558
574
528
What is the dietary importance of fibre in humans?
557
593
582
In which part of the alimentary canal does ingestion take place?
535
555
520
The diagram shows the human alimentary canal, with a string marked in metres beside it.
How long is the small intestine?
560
508
558
A non-woody plant stem is placed in water containing a red dye. It is left for one day and then a section of the stem is examined using a microscope.
Which tissue is stained red?
594
526
514
The diagram shows a cross-section through a leaf.
From which cell will most water evaporate during transpiration?
542
533
557
The diagram shows a cross-section through the heart of a mammal.
Which row correctly identifies P, Q, and R?
507
569
539
Which process is slower than normal in a person with very few platelets?
593
550
597
The body has several defence mechanisms to protect against disease.
Which defence mechanism is a chemical barrier?
582
557
520
A person lives in a climate where the air is very dry. Which row correctly compares inspired air with expired air for this person?
[Table_1]
579
538
585
Substances involved in aerobic respiration are listed.
1. carbon dioxide
2. glucose
3. oxygen
4. water
Which substances are used during aerobic respiration?
545
521
527
The diagram shows the oxygen uptake by germinating seeds at two different temperatures.
At which time is the oxygen uptake at 20°C four times greater than at 10°C?
515
521
504
A person produced 1.75 dm$^3$ of urine on a cool day.
How will the volume and concentration of urine change on a hot day, if fluid intake is the same as on the cool day?
568
528
592
Which hormone triggers the ‘fight or flight’ response?
570
585
570
Which organ detects and coordinates the response to changes in internal body temperature?
500
592
580
Which statement describes the plant response known as phototropism?
516
567
596
Why is excessive consumption of alcohol discouraged before someone operates machinery or drives a vehicle?
564
532
595
What is an example of sexual reproduction?
596
573
510
The diagram shows a cross-section of an insect-pollinated flower.
Which label is the stigma?
579
556
582
The effectiveness of different methods of birth control were studied in one country.
The graph shows the results of the study.
Which type of birth control is the most effective in this study?
586
505
570
Beak shape in birds is controlled by genes passed from the parent birds to their offspring. What is this an example of?
554
518
528
A student used a diagram to explain the inheritance of sex in humans.
Which statements should she use to complete boxes 1 and 2?
576
597
544
Which statement about selective breeding is correct?
529
558
582
Which process uses the principal source of energy input to biological systems?
550
523
569
The diagram shows the water cycle. Four different processes are numbered.
Which row identifies the processes correctly?
522
566
534
A herd of red deer live in a forest that contains snakes and a large variety of birds. Which group of organisms is an example of a population?
557
551
510
Which process makes use of a genetically engineered organism?
591
517
589
The food web shows the feeding relationships in a woodland.
If all the chaffinches in the food web die, which effect would this have?
563
545
551
