Biology 0610/23 October/November 2023: question paper and mark scheme

Question

What are characteristics of all living organisms? A breathing, growth and movement B egestion, nutrition and reproduction C digestion, excretion and respiration D reproduction, respiration and sensitivity

Question

Using the binomial system, the name of a lion is Panthera leo. Which statement is correct? A The lion belongs to the kingdom Panthera. B The lion belongs to the genus Panthera. C The lion belongs to the species Panthera. D The lion belongs to the genus leo.

Question

The diagram shows an organism called Chlamydomonas. ribosomes nucleus mitochondrion chloroplast Which processes can Chlamydomonas carry out? A photosynthesis and respiration only B photosynthesis, respiration, and protein synthesis C protein synthesis and respiration only D respiration only

Question

The diagram shows the structure of a palisade cell from a leaf. Which structure contains chlorophyll? A D B C

Question

A diagram of a white blood cell has a diameter of 76 mm. The magnification of the diagram is ×8000. What is the actual diameter of the white blood cell? A 0.095 µm B 0.95 µm C 9.5 µm D 95.0 µm

Question

Which diagram shows the appearance of a plant cell after it is placed in pure water? A B C D

Question

Which process requires active transport? A oxygen movement from the alveoli to the blood B ion uptake by root hair cells from the soil C water movement through a plant by transpiration pull D absorption of water into a lacteal in a small intestine villus

Question

Which row shows the chemical elements contained in fats? carbon hydrogen nitrogen oxygen A key B = present C = absent D

Question

Glycogen is a large molecule made from smaller molecules. Which smaller molecules is glycogen made from? A amino acids B fatty acids C glucose D glycerol

Question

The graph shows the effect of temperature on the rate of a reaction catalysed by an enzyme. X rate of reaction temperature Which statement explains the shape of the graph at section X? A The enzyme is not the correct one to act on this substrate. B The enzyme is starting to denature. C The number of active sites is increasing. D The frequency of enzyme-substrate collisions is increasing.

Question

During growth, potato plants produce flowers and underground storage organs called tubers. During this time, which parts of the plant act as sources and sinks for translocation? flowers leaves potato tubers A sink sink source B sink source sink C source sink source D source source sink

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

Which human teeth are used for biting and cutting food? A canines and molars B incisors and canines C molars and premolars D premolars and incisors

Question

The diagram shows part of the human digestive system. Which organ produces hydrochloric acid? A B D C

Question

The diagram shows the structure of a villus. The artery, capillary, lacteal and vein are labelled with letters. Which letter shows where nutrients are absorbed into the blood? A B D C direction of blood flow

Question

By which process is water vapour lost from a leaf? A active transport B diffusion C osmosis D photosynthesis

Question

The pathway taken by water through a plant is shown. root hair cells → root cortex cells → Z → mesophyll cells Which part of the pathway is Z? A palisade cells B phloem C stomata D xylem

Question

The graph shows the thickness of the muscular wall in each of the four chambers of the mammalian heart. Which chamber is the right ventricle? thickness of muscular wall A B C D heart chamber

Question

Which row shows correct features of the circulatory system of a fish? number of times number of number of blood flows through atria ventricles the heart during one circuit of the body A one one one B one two two C two one two D two two two

Question

Cholera infection can cause the following events. 1 Cells lining the small intestine secrete chloride ions. 2 Cholera bacteria produce a toxin. 3 Chloride ions move into the small intestine. 4 Water from the blood moves into the small intestine by osmosis. 5 Water potential of fluid in the small intestine becomes lower. Which sequence of events will cause diarrhoea? A 1→3→2→4→5 B 2→1→3→5→4 C 3→1→4→5→2 D 2→3→1→4→5

Question

Which row shows the composition of expired air from a healthy person? carbon dioxide oxygen water vapour % % A 0.04 21 saturated B 0.04 16 variable C 4 21 variable D 4 16 saturated

Question

The table shows the relative concentrations of urea in the blood entering and leaving the kidneys and liver. Which row is correct? highest concentration lowest concentration of urea in the blood of urea in the blood A entering kidneys leaving liver B entering kidneys entering liver C leaving kidneys entering liver D leaving kidneys leaving liver

Question

Which statement about anaerobic respiration is correct? A Anaerobic respiration requires oxygen and releases less energy per glucose molecule than aerobic respiration. B Anaerobic respiration requires oxygen and releases more energy per glucose molecule than aerobic respiration. C Anaerobic respiration does not require oxygen and releases less energy per glucose molecule than aerobic respiration. D Anaerobic respiration does not require oxygen and releases more energy per glucose molecule than aerobic respiration.

Question

During exercise an oxygen debt may occur in muscles. What is the cause of this oxygen debt? A Aerobic respiration causes a decrease in lactic acid. B Aerobic respiration causes an increase in lactic acid. C Anaerobic respiration causes a decrease in lactic acid. D Anaerobic respiration causes an increase in lactic acid.

Question

The diagram shows parts of the body involved in excretion in humans. W X Y Z What are the labelled parts? W X Y Z A bladder ureter kidney urethra B kidney ureter bladder urethra C bladder urethra kidney ureter D kidney urethra bladder ureter

Question

The diagram shows a reflex action when a person touches a hot object and pulls their hand away. hot skin on arm hand neurone relay neurone object → hand → → → → muscle → pulled F neurone G touched E H away Which letter correctly identifies a structure? A E is called the effector. B F is called the motor neurone. C G is called the motor neurone. D H is called the receptor.

Question

A light source is placed on one side of a growing plant. What is the correct explanation of the role of auxin in shoot growth? A Auxin is equally distributed in response to light and stimulates cell elongation. B Auxin is equally distributed in response to light and inhibits cell elongation. C Auxin is unequally distributed in response to light and stimulates cell elongation. D Auxin is unequally distributed in response to light and inhibits cell elongation.

Question

Which statement about antibiotics is correct? A Antibiotics are drugs. B Antibiotics are produced by white blood cells. C Antibiotics can become resistant to bacteria. D Antibiotics kill viruses.

Question

The graph shows the number of cases of disease caused by MRSA bacteria in hospitals in one city between 1998 and 2010. 2000 1800 1600 1400 1200 number of cases 1000 800 600 400 200 0 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 year What was the percentage change in the number of cases between 2002 and 2003? A 44% B 56% C 127% D 227%

Question

Some descriptions of reproduction are listed. 1 formation of a zygote with a diploid nucleus 2 formation of a zygote with a haploid nucleus 3 fusion of diploid nuclei of two gametes 4 fusion of haploid nuclei of two gametes Which are correct descriptions of sexual reproduction in humans? A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

Question

Which statement about pollination in plants is correct? A Cross-pollination is the transfer of pollen from the anther of a flower to the style of the same flower. B Cross-pollination is the transfer of pollen from the anther of a flower to the stigma of a flower on a different plant of the same species. C Self-pollination is the transfer of pollen from the anther of a flower to the filament of the same flower. D Self-pollination is the transfer of pollen from the anther of a flower to the stigma of a flower on a different plant.

Question

The graph shows the changes in the concentration of a hormone that is involved in controlling the menstrual cycle. hormone concentration 0 14 28 time / days What is the hormone? A FSH B LH C oestrogen D progesterone

Question

Pea plants produce either yellow or green seeds. Yellow (Y) is dominant to green (y). What are the most likely phenotypes of the offspring of a cross between YY and Yy plants? A 50% yellow and 50% green B 75% yellow and 25% green C 100% yellow D 100% green

Question

The diagram shows the chromosomes of a cell after they have replicated and just before the cell divides by mitosis. Which pair of cells will be produced at the end of mitosis? A B C D

Question

The table shows the number of stomata per mm2 on the upper and lower epidermis of four different plants. Which plant is most likely to be a hydrophytic plant? number of stomata per mm2 upper epidermis lower epidermis A 25 16 B 70 88 C 460 0 D 0 150

Question

In which process in the nitrogen cycle do microorganisms take nitrogen from the air and convert it into nitrogen compounds? A decomposition B denitrification C nitrification D nitrogen fixation

Question

An increased concentration of nitrates in water may result in the death of fish because of eutrophication. Some stages of eutrophication are given. 1 increased aerobic respiration by decomposers 2 increased decomposition after death of producers 3 increased growth of producers 4 reduction in dissolved oxygen What is the order of these stages that results in the death of fish? A 1→4→3→2 B 1→2→4→3 C 3→2→1→4 D 3→4→2→1

Question

Which word describes the number of different species in an area? A biodiversity B community C ecosystem D population

Question

Which statement is an advantage of genetically modifying crops? A Less pesticide is used if the genetically modified crop is resistant to pests. B More herbicide is used if the genetically modified crop is resistant to herbicide. C Seeds for genetically modified crops are more expensive. D The genetically modified crop genes may be passed to other plants.

Question

Which statements are correct descriptions of parts of the process of protein synthesis? 1 Amino acids are made by the ribosomes. 2 mRNA is copied. 3 The gene coding for the protein moves into the nucleus. 4 The ribosome assembles the amino acids into protein molecules. 5 The sequence of amino acids is determined by the sequence of bases in the mRNA. A 1, 2, 3, 4 and 5 B 1, 3 and 4 only C 2, 3 and 5 only D 4 and 5 only