Paper 2 biology year 11 SEMESTER 1 EXAM

2 1 Woodlice are small organisms that live in damp places. In an experiment, three live woodlice are put into a glass container. The diagram shows what happens after 30 minutes. woodlice placed in hole here damp dry gauze water chemical to absorb water Which characteristic of living organisms is shown by this experiment? A growth B nutrition C respiration D sensitivity 2 Which species can breed with Prunella vulgaris to produce fertile offspring? Prunella modularis Vespula vulgaris A   key B    = yes C    = no D   3 What is the correct order of arthropod groups, from those with the most legs to those with the fewest legs? A arachnids  crustaceans  insects  myriapods B arachnids  insects  myriapods  crustaceans C myriapods  crustaceans  arachnids  insects D myriapods  insects  arachnids  crustaceans © UCLES 2021 0610/22/F/M/21

3 4 The diagram shows four animal cells, as seen under a light microscope. X What will be present at X? A one cell membrane B one cell wall C two cell membranes D two cell walls 5 The diagram shows a root hair cell. cytoplasm vacuole nucleus cellulose cell wall How is this cell modified for the absorption of water? A It has a cellulose cell wall. B It has a thin layer of cytoplasm. C It has a large surface area. D It has a large vacuole. 6 A student draws a diagram of a mitochondrion. The diagram has a magnification of 20 000. The diagram is 5 cm long. What is the actual size of the mitochondrion? A 0.00025 m B 0.0025 m C 0.025 m D 2.5 m © UCLES 2021 0610/22/F/M/21 [Turn over

4 7 A jar of air was placed upside down on top of a jar containing a brown gas as shown. air air and brown gas brown gas at start after one hour Which process has taken place? A diffusion both upwards and downwards B diffusion downwards only C diffusion upwards only D diffusion and osmosis 8 Which row describes active transport? particles move through a cell membrane energy from from a region of to a region of respiration needed A higher concentration lower concentration no B higher concentration lower concentration yes C lower concentration higher concentration no D lower concentration higher concentration yes 9 The bases on one strand of a DNA molecule have the sequence CAGCT. What is the sequence of bases on the other strand? A CAGCT B GTCGA C TGATC D GCTAG © UCLES 2021 0610/22/F/M/21

5 10 The graph shows the effect of temperature on the rate of an enzyme-controlled reaction. Y rate X Z temperature Which statements are correct? 1 The collision frequency between substrate and enzyme increases between X and Y. 2 The shape of the active site is altered between Y and Z. 3 The enzyme is denatured irreversibly at X and Z. A 1, 2 and 3 B 1 and 2 only C 1 only D 2 and 3 only 11 Which graph represents the effect of pH on the activity of a digestive enzyme? A B activity of activity of enzyme enzyme 1 7 13 1 7 13 pH pH C D activity of activity of enzyme enzyme 1 7 13 1 7 13 pH pH © UCLES 2021 0610/22/F/M/21 [Turn over

6 12 In which process is oxygen a waste product? A active transport B aerobic respiration C anaerobic respiration D photosynthesis 13 Which layer in the leaf contains interconnecting air spaces? A B C D 14 Where does egestion take place? B C A D © UCLES 2021 0610/22/F/M/21

7 15 The diagram shows a fat globule (P) in one part of the alimentary canal and the same fat globule (Q) as it appears in another part of the alimentary canal. P Q In which parts of the alimentary canal are P and Q found? P Q A duodenum stomach B ileum oesophagus C oesophagus ileum D rectum ileum 16 The diagram shows enzymes and the products of the reactions they catalyse. amino acids amylase fatty acids lipase glycerol protease simple sugars Which diagram matches the enzymes with the correct products? A B C D © UCLES 2021 0610/22/F/M/21 [Turn over

8 17 Which statement about a function of xylem tissue is correct? A It carries glucose from the roots to the leaves. B It helps to support stems and leaves. C It is the only transport tissue in the plant. D It carries water away from the leaves. 18 What is part of the definition of transpiration? A the loss of water vapour from plant leaves by evaporation of water at the surfaces of the mesophyll cells B the movement of molecules into the cells of the organism where they are used C the movement of particles through a cell membrane from a region of lower concentration to a region of higher concentration D the transport of mineral ions from the roots into the stem and leaves 19 The diagram shows the circulation of blood in an organism. O2 CO2 heart capillaries heart capillaries heart CO2 O2 In which part of the organism is the location of the capillaries in the box? A fish body B fish gills C mammalian lungs D mammalian body © UCLES 2021 0610/22/F/M/21

9 20 The photomicrograph shows human blood. Which blood component can carry out the process of phagocytosis? A B C D 21 Which diagram shows how a vaccination can lead to long-term immunity? A B antigen injected memory cell injected lymphocytes antigens multiply multiply antibodies memory cells lymphocytes antibodies produced produced produced produced C D antigen injected antibody injected memory cells lymphocytes multiply multiply lymphocytes antibodies antigens memory cells produced produced produced produced © UCLES 2021 0610/22/F/M/21 [Turn over

10 22 Air entering human lungs contains approximately 21% oxygen and 0.04% carbon dioxide. Which row shows the concentrations of these gases in air leaving the lungs? percentage of percentage of oxygen carbon dioxide in expired air in expired air A 4 21.0 B 12 4.0 C 16 4.0 D 20 0.4 23 After running a fast race a student had pains in their leg muscles. The pain was caused by the build-up of a product of anaerobic respiration. Which product caused the pain? A carbon dioxide B ethanol C lactic acid D water © UCLES 2021 0610/22/F/M/21

11 24 The diagram shows the production and excretion of materials from the human body. V cells carbon dioxide X W amino acids liver Y excess salt Z What are V, W, X, Y and Z in the diagram? V W X Y Z A anaerobic respiration deamination kidneys urea lungs B anaerobic respiration filtration lungs kidneys urea C aerobic respiration deamination lungs urea kidneys D aerobic respiration filtration urea lungs kidneys 25 What is a function of a synapse? A to allow impulses to travel in both directions B to ensure impulses travel in one direction C to release vesicles into the synaptic gap D to transport neurotransmitters by osmosis 26 Hormones and the nervous system both control our bodies. Which statement about the control provided by our hormones is correct? A fast response and long lasting B fast response and short lived C slow response and long lasting D slow response and short lived © UCLES 2021 0610/22/F/M/21 [Turn over