Biology 0610/11 October/November 2020: question paper and mark scheme

Question

Hedgehogs are mammals. Touching a hedgehog causes it to roll into a ball to protect itself. Which characteristics is it displaying? A excretion and movement B growth and sensitivity C movement and growth D movement and sensitivity

Question

According to the binomial system, how should a human be named? A Homo Sapiens B Homo sapiens C homo Sapiens D homo sapiens

Question

The diagram shows an arthropod. Which group does this arthropod belong to? A arachnid B crustacean C insect D myriapod

Question

The photomicrograph shows a cell from a type of aquatic plant. S R Q P Which parts labelled on the photomicrograph indicate that this is a plant cell? A P and R B P and S C Q and R D Q and S

Question

The diagram shows the female reproductive system. ovum At which level of organisation are the ovum and the ovary? ovum ovary A cell organ B cell tissue C organ tissue D tissue organ

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The cell shown in the diagram has been magnified 3000 times. The diagram is 21 mm wide. What is the actual diameter of the cell? A 21 mm B 21mm 3000 C 21 mm × 3000 D 3000 21mm

Question

What are features of osmosis? requires a partially diffusion is requires cell walls permeable involved membrane A key B = yes C = no D

Question

The diagram shows apparatus which can be used to demonstrate osmosis. 1 2 glass tube liquid level very concentrated concentrated water sucrose solution sucrose solution partially permeable membrane After one hour, what would happen to the liquid levels in the glass tubes? liquid level in liquid level in tube 1 tube 2 A falls falls B falls rises C rises falls D rises rises

Question

Which substances are made by linking together glucose molecules only? A cellulose, glycogen and starch B fats, cellulose and proteins C proteins, oils and glycogen D starch, fats and oils

Question

The graph shows the effect of pH on the rate of reaction of an enzyme. rate of reaction 3 4 5 6 7 8 9 pH What does the graph show? A The enzyme is destroyed at pH 9. B The enzyme works best at pH 6. C The rate of reaction halves as the pH changes from pH 5 to pH 7. D The rate of reaction is the same at pH 5 and pH 8.5.

Question

What kind of molecule is an enzyme? A fat B glucose C protein D starch

Question

The diagram shows a cell with groups of bacteria around its edge. cell cytoplasm spiral-shaped chloroplast bacteria The bacteria move to areas of high oxygen concentration. Which process in the cell causes the bacteria to form these groups? A digestion B photosynthesis C reproduction D respiration

Question

The diagram shows a section through a leaf. Y X Which row correctly identifies tissues X and Y? X Y A palisade mesophyll cuticle B palisade mesophyll upper epidermis C spongy mesophyll cuticle D spongy mesophyll upper epidermis

Question

Which stage of nutrition takes place when food molecules become part of a body cell? A absorption B assimilation C digestion D ingestion

Question

What is the definition of chemical digestion? A Large insoluble molecules are changed into smaller soluble molecules. B Large soluble molecules are changed into smaller soluble molecules. C Small insoluble molecules and ions are passed through the wall of the small intestine. D Small soluble molecules and ions are passed through the wall of the small intestine.

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The diagram shows the human alimentary canal. Where is most digested food absorbed into the blood? A D B C

Question

In which order does water pass through these structures in a plant? A mesophyll → root hair → xylem B mesophyll → xylem → root hair C root hair → mesophyll → xylem D root hair → xylem → mesophyll

Question

The photomicrograph shows a cross-section through a plant stem. X What is the name and function of the tissue labelled X? tissue function A phloem transports sugars B phloem transports water and minerals C xylem transports sugars D xylem transports water and minerals

Question

The table shows some features of blood vessels. Which row shows the features of a vein? direction of size of the central thickness of blood flow hole (lumen) wall A away from large thick the heart B away from small thick the heart C towards heart small thin D towards heart large thin

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Which component of the blood releases antibodies in response to an infection by bacteria? A blood plasma B platelets C red blood cells D white blood cells

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Which is an example of a transmissible disease? A coronary heart disease caused by eating a high fat diet B AIDS C liver disease caused by excessive alcohol consumption D scurvy

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The diagram shows some of the structures in a human lung. Where is the carbon dioxide concentration highest? from pulmonary artery C B to pulmonary vein D A

Question

The list shows some processes that happen in the human body. 1 water enters cells by osmosis 2 muscles contract 3 impulses travel along neurones 4 oxygen diffuses into cells Which of these require energy released by respiration? A 2 only B 1 and 3 only C 2 and 3 only D 1, 2, 3 and 4

Question

The amount of urea in the blood increases as it passes through organ X. What is organ X? A heart B kidney C liver D pancreas

Question

Which is the correct sequence of structures through which a nerve impulse passes in a reflex arc? A effector → motor neurone → relay neurone → sensory neurone → receptor B effector → sensory neurone → relay neurone → motor neurone → receptor C receptor → motor neurone → relay neurone → sensory neurone → effector D receptor → sensory neurone → relay neurone → motor neurone → effector

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The diagram shows an eye. Which labelled part contains cells that are sensitive to light? B A C D

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Which hormone stimulates the development of male gametes? A adrenaline B insulin C oestrogen D testosterone

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A drug is defined as a substance taken into the body that A causes addiction. B cures disease. C kills bacteria. D modifies or affects chemical reactions.

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What is an example of asexual reproduction? A a single bacterium dividing to produce two genetically identical bacteria B a mammal giving birth to four offspring C a female bird laying six eggs which will hatch into the same species D a tomato plant producing fruits which contain many seeds

Question

What is the sequence of events when a woman gives birth? 1st 2nd 3rd A delivery of cervix dilates passage of fetus afterbirth through vagina B cervix dilates passage of fetus umbilical through vagina cord cut C passage of fetus amniotic sac cervix dilates through vagina breaks D umbilical passage of fetus delivery of cord cut through vagina afterbirth

Question

Some types of birth control are listed. 1 condom 2 diaphragm 3 IUD 4 vasectomy Which types are barrier methods? A 1, 2 and 4 B 1 and 2 C 1 only D 3 and 4

Question

In humans, sex determination is controlled by the X and Y chromosomes. A man and a woman have three children, two boys and a girl. What is the probability that their next child will be a girl? A 25% B 50% C 75% D 100%

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Mitosis is a type of cell division. Which row about mitosis is correct? cells produced functions A genetically different growth and repair of tissues B genetically different production of gametes C genetically identical growth and repair of tissues D genetically identical production of gametes

Question

Which statement is best used to describe differences in height in humans? A continuous variation resulting in a limited number of phenotypes B continuous variation resulting in a range of phenotypes C discontinuous variation resulting in a limited number of phenotypes D discontinuous variation resulting in a range of phenotypes

Question

A student wrote some statements describing the stages involved during selective breeding of plants. 1 Farmers select individual plants with desirable features. 2 Farmers cross these individuals to produce the next generation. 3 The farmers then select the offspring with the desirable features. Which statements are correct? A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

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The diagram shows a food chain. clover plant → rabbit → fox Which terms can be used to describe the fox in this food chain? A carnivore and primary consumer B carnivore and secondary consumer C carnivore and tertiary consumer D carnivore only

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The diagram represents the carbon cycle. carbon dioxide in the atmosphere smoke factory car gradual production of fossil fuels coal, oil and gas Which process produces the carbon dioxide from the factory and the car? A combustion B condensation C decomposition D precipitation

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In the water cycle, which stage is only carried out by plants? A condensation B evaporation C precipitation D transpiration

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Yeast carries out anaerobic respiration, making carbon dioxide and ethanol as end products. Which end products can be used to make biofuel and bread? biofuel bread A carbon dioxide carbon dioxide B carbon dioxide ethanol C ethanol carbon dioxide D ethanol ethanol

Question

What is the effect of replacing tropical rainforest with plantations of oil palm trees, which are grown as crop plants? A increased carbon dioxide in the atmosphere B increased flooding C reduced number of species D reduced pollution