No questions found
All living organisms release energy from nutrient molecules within their cells.
What is the name of this characteristic?
539
600
593
The scientific names of some animals are listed.
1. Arius felis
2. Felis concolor
3. Felis rufus
4. Macropus rufus
Which animals are in the same genus?
557
596
584
The diagram shows a dichotomous key for arthropods.
The organism shown is an arthropod called an isopod.
Which group does the isopod belong to?
527
564
528
The diagram shows a cross-section through two guard cells of a leaf. Which labelled structures would also be found in an animal cell?
558
578
600
Which level of organisation is shown by the heart of a mammal?
597
586
511
The image shows a single-celled organism called a Paramecium.
The length of the Paramecium in the image is 6 cm. The magnification is ×400.
Which calculation will give the correct actual length of the Paramecium, in mm?
512
535
586
Female moths release chemicals into the air. Male moths detect these chemicals and fly towards the females.
How do the chemicals spread through the air?
526
525
581
The diagram shows a section through a mesophyll cell of a leaf. Which part is partially permeable?
545
539
565
What are the smaller basic units of starch and glycogen molecules?
[Table_1]
501
534
557
The diagram shows two food tests being carried out on solution X.
Which nutrients are present in solution X?
572
570
537
Which chemical is a product of photosynthesis that moves out of a green leaf through its stomata?
539
547
540
A student investigated one of the factors that affects photosynthesis. Part of a leaf was covered with black paper, as shown. After two days the student tested the leaf for the presence of starch. Which factor did the student investigate?
507
551
509
Which nutrient is required to prevent scurvy?
527
596
551
Which diagram represents the action of lipase?
526
572
590
The diagram shows the human alimentary canal, with a string marked in metres beside it.
How long is the small intestine?
579
513
559
The image shows a cross-section of part of a leaf. Which labelled structure is the xylem?
564
567
517
The diagram shows a cross-section of a root.
Three regions of the root are numbered.
Which regions contain cells through which water must pass to reach the xylem?
514
532
561
A student runs 400 metres.
Which effects will this have?
569
545
544
Which process is slower than normal in a person with very few platelets?
525
529
538
The body has several methods of avoiding infection by pathogens, including specialised cells, mechanical barriers and chemical barriers.
Which row has a correct example for each method?
594
591
535
The diagram shows the apparatus used in an investigation of gas exchange in humans.
The person breathes through the central tube five times.
What are the expected results in flasks X and Y?
521
598
567
Which substances are used in aerobic respiration?
535
545
557
The bar chart shows the percentage composition of two gases in four samples of air.
Which sample is expired air?
580
541
564
The diagram shows the excretory system.
Which labels are the ureter and the bladder?
503
592
508
Which conditions will result in the largest volume of urine being produced by the kidneys?
[Table] water intake /cm³ | environmental temperature /°C | activity
A | 1500 | 15 | rest
B | 500 | 15 | exercise
C | 1500 | 30 | rest
D | 500 | 35 | exercise
547
580
566
A simple reflex arc consists of four components between a receptor and a response. Which component is the motor neurone?
receptor \rightarrow A \rightarrow B \rightarrow C \rightarrow D \rightarrow response
540
567
567
Which part of the eye focuses light on the retina?
551
587
565
Which statement about the hormone insulin is correct?
531
569
576
The diagram shows the effect of four different antibiotics, A, B, C, and D, on the growth of one type of bacteria. The bacteria were grown on agar jelly in a Petri dish. When bacteria covered the whole surface of the agar, paper discs soaked in each antibiotic were placed on top of the agar.
The diagram shows the appearance of the Petri dish 48 hours after the paper discs were added.
Which antibiotic is the most effective treatment for this type of bacteria?
566
536
516
Four processes involved in labour and birth are shown.
1 cutting the umbilical cord
2 contraction of muscles in the uterus wall
3 delivery of the afterbirth
4 dilation of the cervix
5 passage of the baby through the vagina
In which sequence do these events normally occur?
588
523
568
The diagram shows four types of birth control device.
Which methods of birth control offer protection against sexually transmitted infections (STIs)?
[Table_1]
570
565
503
The table shows the percentage of pregnancies in four groups of women. Each group used a different method of birth control.
[Table_1]
Which type of birth control was the most effective?
532
551
536
Which sex chromosomes in the egg cell and in the sperm will produce a female child?
[Table_1]
529
507
515
Which statement about selective breeding is correct?
582
527
552
Which process uses the principal source of energy input to biological systems?
580
539
545
What is the name of an organism that obtains its energy from dead organic material?
516
538
590
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?
600
580
554
Which process makes use of a genetically engineered organism?
570
593
554
The food web shows the feeding relationships in a woodland.
If all the chaffinches in the food web die, which effect would this have?
519
506
515
