Biology 0610/12 October/November 2019: question paper and mark scheme

Question

The diagrams show a test-tube containing pond water. The green colour is caused by microorganisms that have chloroplasts. oxygen bubble pale green dark green pond water area light off light on Which characteristics of living organisms are shown? A excretion, growth and movement B movement, nutrition and sensitivity C nutrition, reproduction and respiration D reproduction, sensitivity and growth

Question

Which shows an organism that has been named using the binomial system? A Brown seaweed B Polar bear C Red fox D Vulpes vulpes

Question

The diagram shows an arthropod. pedipalp legs To which group does it belong? A arachnids B crustaceans C insects D myriapods

Question

Which features do animal cells share with plant cells? chloroplast cytoplasm nucleus A key B = yes C = no D

Question

The diagram shows an animal. Use the key to identify the animal. 1 wings present …… go to 2 wings absent …… go to 3 2 one pair of wings visible …… A two pairs of wings visible …… B 3 three pairs of legs …… C four pairs of legs …… D

Question

At which level of organisation is a root? A organ B organ system C organism D tissue

Question

Some pieces of potato were placed in a very concentrated sugar solution. Other pieces of potato were placed in distilled water. What happened to the mass of the potato pieces in the two liquids? mass of the mass of the potato pieces potato pieces in a very concentrated in distilled water sugar solution A decreased decreased B decreased increased C increased decreased D increased increased

Question

Which identifies the chemical elements found in proteins? carbon hydrogen oxygen nitrogen A key B = present C = absent D

Question

A student carries out a test to see whether the solution in a test-tube contains protein. Which row shows the correct food test and a positive result? colour seen with a name of test positive result A Benedict’s test blue-black B Benedict’s test purple C biuret test blue-black D biuret test purple

Question

The diagram shows an experiment investigating the effect of light intensity on an aquatic plant. light light source source 20 cm 10 cm P Q Photosynthesis occurred in both test-tube P and test-tube Q. Both test-tubes were kept at the same temperature. The number of bubbles produced in test-tube P was 12 bubbles per minute. What is the most likely number of bubbles produced in one minute in test-tube Q? A 0 B 3 C 12 D 48

Question

In which situation would insulin secretion usually increase? A after eating a meal B hearing a loud bang immediately behind you C listening to music D reading a book

Question

The pie charts show the composition of 100 g of four different foods. Which food provides the most energy? A B C D key carbohydrate fats and oils protein water

Question

The diagram shows the digestive system. Where does egestion take place? A B C D

Question

The diagram shows an experiment kept at room temperature. tubing containing starch, protease, test-tube protein and simple sugars distilled water membrane permeable to small molecules only What is present in the water surrounding the membrane after 45 minutes? A amino acids and simple sugars B protein and amino acids C protein and simple sugars D starch and simple sugars

Question

The diagram shows an experiment to investigate transpiration. transparent plastic bag balance plant 1 plant 2 Plant 1 is not covered. Plant 2 and its pot are covered by a transparent plastic bag. The mass of each plant and its pot is measured. The masses are measured again after two hours. What is the result? A The mass of both plants decreases by the same percentage. B The mass of both plants stays the same. C The mass of plant 1 decreases more than the mass of plant 2. D The mass of plant 2 decreases more than the mass of plant 1.

Question

The diagram shows a vertical section through a human heart. X Y What are X and Y? X Y A left atrium right ventricle B left ventricle right atrium C right atrium left ventricle D right ventricle left atrium

Question

Which factor increases the risk of developing coronary heart disease? A low fat diet B regular exercise C relaxation D smoking

Question

The body has several defence mechanisms to protect the body against disease. Which is a chemical barrier? A hair in the nose B mucus C skin D white blood cells

Question

The diagram shows part of the human gas exchange system. to P Q R Which row identifies P, Q and R? P Q R A alveolus wall capillary wall vein B bronchiole alveolus wall capillary C capillary layer of moisture bronchiole D alveolus wall bronchiole capillary

Question

When is respiration carried out by green plants? A at all times B at dusk and dawn only C during the night only D never

Question

Which process releases the most energy from one molecule of glucose? A aerobic respiration B anaerobic respiration in muscle C anaerobic respiration in yeast D photosynthesis

Question

The diagram shows a simple reflex arc. 2 sensory neurone 3 activated muscle stimulated 4 receptor stimulated knee tapped here 1 motor neurone activated What is the correct order of events after the knee is tapped? A 1→2→3→4 B 1→4→2→3 C 4→2→1→3 D 4→3→2→1

Question

The diagram shows the eye of a person in a brightly-lit room. P Q What happens to distance P and distance Q when this person moves from the brightly-lit room into a dark room? distance P distance Q A decreases increases B decreases stays the same C increases decreases D stays the same increases

Question

The diagram shows a leaf as seen in cross-section under the microscope. 1 2 3 What are tissues 1, 2 and 3? 1 2 3 A epidermis palisade mesophyll spongy mesophyll B epidermis spongy mesophyll palisade mesophyll C palisade mesophyll epidermis spongy mesophyll D spongy mesophyll palisade mesophyll epidermis

Question

A patient has dye injected into the blood supply to his kidneys. The dye appears in his excretory system as shown. key dye no dye Which part is blocked? A the kidney B the ureter C the bladder D the urethra

Question

Which organ secretes amylase? A colon B liver C pancreas D stomach

Question

What is essential for the germination of all seeds? A light B nutrients C water D photosynthesis

Question

The diagram shows the female reproductive system. 3 2 4 1 Where does fertilisation normally occur? A 1 and 2 B 2 only C 3 and 4 D 4 only

Question

The graph shows the decline in testosterone production as men get older. 120 100 testosterone 80 production 60 / arbitrary units 40 20 0 20 30 40 50 60 70 80 90 age / years Which age range shows the greatest decline in testosterone production? A 40 to 50 years B 50 to 60 years C 60 to 70 years D 70 to 80 years

Question

A man has three sons. What is the chance of his next child being a daughter? A 0% B 25% C 50% D 100%

Question

Which statements about meiosis are correct? produces involved in the genetically production of identical cells gametes A key B = yes C = no D

Question

In a plant species, the allele for red flowers, R, is dominant to the allele for white flowers, r. Homozygous red-flowered plants, RR, are crossed with homozygous white-flowered plants, rr. What is the colour of the flowers produced by the offspring of this cross? A all red B all white C equal numbers of red and white D three white to one red

Question

Different organisms have different adaptive features. For example, the anthers of wind-pollinated flowering plants have long filaments. What is true of this adaptive feature? A Filament length is not affected by genes. B It gives the plant an advantage in any environment. C Longer filaments attract more insects. D It makes the plant more likely to reproduce.

Question

The statements describe aspects of selective breeding and natural selection. Which statement applies only to selective breeding? A Humans select individuals which have desirable features. B Individuals pass their alleles to the next generation. C There may be a large number of offspring produced. D There is variation between individual offspring.

Question

Which diagram correctly shows the flow of energy? A producers consumers decomposers B consumers producers decomposers C producers consumers decomposers D decomposers consumers producers

Question

The diagram shows a food chain. Which organism is the secondary consumer? A B C D grass rabbit fox flea

Question

Which process is part of the carbon cycle? A combustion B evaporation C precipitation D transpiration

Question

What is an example of genetic engineering? A inserting genes into bacteria B inserting insulin into bacteria C spraying plants with herbicides D using biological washing powders

Question

What are the possible effects of deforestation? decrease in atmospheric loss of soil flooding carbon dioxide A yes yes no B yes no yes C no yes no D no no yes

Question

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? input of raw sewage A C D B direction of flow