No questions found
What are the characteristics of bony fish? [Table_1]
588
572
596
What are the features of the leaves of a plant that is a eudicotyledon (dicotyledon)?
[Table_1]
557
582
589
Many snakes that belong to the viper family are unusual in that they give birth to live young.
This is usually a characteristic of which vertebrate group?
546
522
577
Use the key to identify which group is amphibians.
1 hair present .......................................... mammals
hair absent ......................................... go to 2
2 feathers present .................................. group A
feathers absent ................................ go to 3
3 dry scaly skin..................................... group B
moist skin ......................................... go to 4
4 four limbs .......................................... group C
no limbs ............................................ group D
586
508
568
The diagram shows a liver cell.
Which features are present in this cell and also in most plant cells?
538
568
515
Which structure is present in a root hair cell but not in a liver cell?
538
555
525
Which description of the heart is correct?
555
527
597
The diagram shows four cells. Which two cells contain cellulose and a vacuole?
576
521
512
The diagrams show how a cell appears under the microscope at the start of an experiment and after it has been placed in a dilute solution of salts for 5 minutes.
Which statement explains what happens?
536
533
550
The diagram represents the molecules in two solutions either side of a fully permeable membrane.
In which directions are the net movements of the molecules?
556
589
508
Which group of compounds ensures that metabolic reactions take place effectively?
513
583
505
Four different foods were tested for their composition. The results are shown in the table. Which food contains protein but not reducing sugar or starch? [Table_1]
593
531
569
What are the smaller basic units of starch and glycogen molecules? [Table_1]
558
557
597
A plant with striped leaves similar to the one below was kept in bright light for six hours.
[Image_1: Diagram of leaf with white and green stripes]
A leaf was taken from the plant and the chlorophyll removed. It was then tested for starch using iodine solution.
Which diagram shows the result of the test?
523
544
598
Which substances are transported in the phloem?
561
550
557
The diagrams show some components of the blood of a mammal.
Which component causes the blood to start clotting?
599
500
586
Where are hormones removed from the blood and broken down in the human body?
527
556
546
The list shows four metabolic processes.
1. carbon dioxide + water $\rightarrow$ glucose + oxygen
2. glucose $\rightarrow$ alcohol + carbon dioxide
3. glucose $\rightarrow$ lactic acid
4. glucose + oxygen $\rightarrow$ carbon dioxide + water
Which of these processes occur in muscles?
594
561
547
The diagram shows apparatus used to investigate anaerobic respiration in yeast.
What happens to the coloured liquid?
512
581
525
The diagram shows some of the structures in a human lung.
Where is the carbon dioxide concentration highest?
521
596
501
Where is urea produced in the human body and from which chemicals is it produced? [Table_1]
588
541
544
The table shows the composition of a liquid found in the human body.
[Table_1]
In a healthy person, which structure contains this liquid?
532
566
543
The diagram shows muscles and bones in a person's arm.
What happens to the muscles as the weight is lowered?
500
599
501
In an experiment to investigate phototropism, a plant shoot is grown with light coming from one side only. After two days, in which region has the greatest rate of growth occurred?
507
598
559
Which structure is involved in the transfer of dissolved nutrients from the mother to the fetus?
514
556
545
The diagram shows the human female reproductive system.
After ejaculation, along which route does a male gamete travel to fuse with an egg?
590
530
564
Which set of conditions is required for seed germination? [Table_1]
505
503
515
The graph shows the height of a child, from birth to the age of 10.
What was the approximate height of the child at 7 years of age?
587
544
506
Which pathway is taken by energy from the Sun?
518
573
590
The diagram shows a food web including a producer, consumers and a decomposer. Which organism is the decomposer?
526
530
559
The diagram shows a food chain.
If the hawks are removed from this food chain, what is likely to happen to the numbers of the other organisms in this chain?
574
514
529
Which organisms remove carbon dioxide from the atmosphere?
569
533
538
The diagram shows a simple water cycle.
What is responsible for water loss from the tree?
515
513
548
Which process is not part of the carbon cycle?
585
520
527
Which factors affect the rate of growth of a plant population?
[Table with factors: disease, grazing by herbivores, light intensity]
583
548
524
What is a reason for conserving plant species?
544
501
550
What is reduced after deforestation?
562
587
569
The diagram shows four positions on a river where water samples were taken.
Which graph shows oxygen concentrations in the river?
574
526
600
