Biology 0610/12 February/March 2021: question paper and mark scheme

Question

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

Question

Which species can breed with Prunella vulgaris to produce fertile offspring? Prunella modularis Vespula vulgaris A key B = yes C = no D

Question

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

Question

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

Question

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.

Question

The diagram shows a drawing of part of a tulip flower. The actual width of the stigma, shown by the line PQ, is 5 mm. The length of line PQ is 15 mm. P Q What is the magnification of the diagram? A ×0.3 B ×3 C ×30 D ×300

Question

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

Question

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

Question

Four foods were tested for each of these nutrients: fat (using the ethanol emulsion test) protein (using the biuret test) reducing sugar (using Benedict’s solution). Which food contains protein and fat? colour of result of food test purple brick-red milky-white A key B = nutrient present C = nutrient absent D

Question

A human enzyme was used in an experiment. All factors were kept constant, apart from temperature. What happened to the rate of reaction when the temperature was reduced steadily from 35 °C to 5 °C? A It decreased steadily. B It increased and then decreased. C It increased steadily. D It remained the same.

Question

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

Question

In which process is oxygen a waste product? A active transport B aerobic respiration C anaerobic respiration D photosynthesis

Question

The table shows diagrams of three types of cell found in a leaf. Which row correctly identifies each cell type? not to scale A spongy mesophyll epidermis xylem B spongy mesophyll xylem epidermis C xylem epidermis spongy mesophyll D xylem spongy mesophyll epidermis

Question

Where does egestion take place? B C A D

Question

The diagram shows a tooth with signs of decay. enamel decay What has made the hole in the enamel of the tooth? A acid B saliva C sugar D toothpaste

Question

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

Question

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.

Question

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

Question

Which structures ensure the one-way flow of blood in the human circulatory system? A alveoli B capillaries C synapses D valves

Question

The diagram shows a section through the heart. Which part pumps blood to the aorta? A B D C

Question

Which defence prevents pathogens from entering the body? A antibody production B mucus C phagocytosis D vaccination

Question

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

Question

What are the products of anaerobic respiration in yeast? A alcohol + carbon dioxide B alcohol + oxygen C lactic acid + carbon dioxide D lactic acid + oxygen

Question

The diagram shows the human excretory system and associated blood vessels. X Y Z What are structures X, Y and Z? X Y Z A ureter bladder urethra B ureter kidney urethra C urethra bladder ureter D urethra kidney ureter

Question

Sensory neurones conduct impulses from A the brain and spinal cord to muscles. B one sense organ to another sense organ. C sense organs to the brain and spinal cord. D sense organs to muscles.

Question

The diagram shows a section through human skin. V Z W Y X Which row matches the labelled part to its function? sensing sweat insulation temperature production A Y W Z B Y V X C X W Z D X V Y

Question

The diagram shows a seedling growing in a pot in the light. seedling soil The pot was then placed on its side in a dark room. What will be the appearance of the seedling after 48 hours? A B C D

Question

Heroin is an illegal drug which has many effects on the body. Which statement about the effects of heroin abuse is correct? A Heroin decreases reaction times. B Heroin increases negative social behaviour. C Heroin is a stimulant. D Heroin is not addictive.

Question

Which process is occurring at X? gamete 1 zygote X gamete 2 A fertilisation B mitosis C pollination D meiosis

Question

Which diagram of the male reproductive system is correctly labelled? A B prostate prostate gland gland sperm duct sperm duct testis testis C D prostate gland testis sperm sperm duct duct prostate testis gland

Question

Which method of birth control works by preventing an egg from being released? A condom B contraceptive pill C monitoring body temperature D vasectomy

Question

What is defined as ‘a thread-like structure of DNA, carrying genetic information in the form of genes’? A allele B chromosome C protein D zygote

Question

The diagram shows the production of a male embryo. egg cell P male embryo sperm cell Which row shows the sex chromosomes in the cells and the type of cell division at P? sex chromosomes found in type of cell egg cell sperm cell male embryo division at P A X X XX mitosis B X X XX meiosis C X Y XY mitosis D X Y XY meiosis

Question

Foxes are mammals. The table shows adaptations of four different species of fox. Which fox is best adapted to live in a hot dry desert region? daily volume of behaviour ear size fur colour urine produced A mainly active in the day very small white large B mainly active at night very large pale brown small C mainly active at night small dark brown large D mainly active in the day large dark grey small

Question

What is the principal source of energy input into food chains? A glucose B heat C soil D sunlight

Question

What would be the effect of cutting down forests, on the carbon dioxide concentration in the atmosphere? A Carbon dioxide concentration would fall because of less photosynthesis. B Carbon dioxide concentration would fall because of more photosynthesis. C Carbon dioxide concentration would rise because of less photosynthesis. D Carbon dioxide concentration would rise because of more photosynthesis.

Question

What is an example of a population? A all the arthropods in a pond B all the chital deer found in a forest C all the lions that lived from 1950–2000 D all the flowering plants in a wood

Question

During the extraction of apple juice, ripe apples are crushed and the enzyme pectinase is added. Which observation shows that pectinase has been used to produce the apple juice? volume of juice appearance of obtained / dm3 the juice A 0.6 cloudy B 1.2 cloudy C 0.4 clear D 2.8 clear

Question

Rice has been modified by adding genes from bacteria and another plant so that it can produce the nutrient beta carotene. What is this process called? A evolution B genetic engineering C mutation D selective breeding

Question

During the treatment of sewage, what is removed by screening? A bacteria B fats and grease C large plastics D urine