YEAR 11 Trial Exam Paper 2013 - SCSC Year 11...

This trial examination produced by Insight Publications is NOT an official VCAA paper for 2013 Biology written examination 1. This examination paper is licensed to be printed, photocopied or placed on the school intranet and used only within the confines of the purchasing school for examining their students. No trial examination or part thereof may be issued or passed on to any other party including other schools, practising or non-practising teachers, tutors, parents, websites or publishing agencies without the written consent of Insight Publications. Copyright © Insight Publications 2013

INSIGHT YEAR 11 Trial Exam Paper

2013 BIOLOGY

Written examination 1

STUDENT NAME:

QUESTION AND ANSWER BOOK

Reading time: 15 minutes Writing time: 1 hour 30 minutes

Structure of book

Section Number of questions

Number of questions to be answered

Number of marks

A B

25 8

25 8

25 50 Total 75

Students are permitted to bring the following items into the examination: pens, pencils, highlighters, erasers, sharpeners and rulers.

Students are NOT permitted to bring sheets of paper or white out liquid/tape into the examination. Calculators are not permitted in this examination.

Materials provided

The question and answer book of 23 pages. An answer sheet for multiple-choice questions.

Instructions

Write your name in the box provided. You must answer the questions in English.

At the end of the examination

Place the answer sheet for multiple-choice questions inside the front cover of this book.

Students are NOT permitted to bring mobile phones or any other electronic devices into the examination.

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SECTION A – continued Copyright © Insight Publications 2013

SECTION A – Multiple-choice questions

Instructions for Section A

Answer all questions in pencil on the answer sheet provided for the multiple-choice questions. Choose the response that is correct or that best answers the questions. 1 mark will be awarded for a correct answer; no marks will be awarded for an incorrect answer. Marks are not deducted for incorrect answers No marks will be awarded if more than one answer is chosen for any question.

Question 1

When initially focusing a light microscope, it is suggested that A. the slide is in direct contact with the high power objective. B. the lowest power objective is used first, followed by the higher power objectives. C. the stage is set to the lowest possible position. D. the microscope’s light source is switched off and the room is dark.

Question 2

If the eye-piece of a microscope has a magnification of ×10 and the objective lens being used has a magnification of ×800, the total magnification at which the specimen is being viewed is A. 8 B. 80 C. 8000 D. 80 000

Question 3

Which of the following is not an example of a polysaccharide? A. Cellulose B. Chitin C. Salivary amylase D. Glycogen

Question 4

Prokaryotic cells A. contain a small piece of linear DNA. B. contain ribosomes. C. combine to make larger organisms. D. are commonly bigger than eukaryotic cells.

Question 5

Which of the following is not true regarding a plasma membrane? A. It is composed of two layers of phospholipids arranged with their hydrophilic ends pointing

inwards. B. Protein channels span the width of the membrane and allow the transport of substances

through them. C. Lipid-soluble substances such as alcohol can diffuse through unhindered by the plasma

membrane’s control system. D. Molecules of cholesterol regulate the fluidity of the structure.

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SECTION A – continued TURN OVER

Copyright © Insight Publications 2013

Use the following information to answer Questions 6 and 7.

Sally completed an experiment at school involving three blocks of agar (A, B and C). The blocks all shared the same volume measurement, but differed in their surface area. They were stained with phenolphthalein, making them pink in colour. Sally placed all three blocks in hydrochloric acid and set a timer. As the acid diffused into the blocks it caused them to change from pink to colourless. Sally noted down how long it took for each block to completely change.

Question 6

Which block would Sally expect to completely change colour first? A. Block A because it has a smaller surface area than each of blocks B and C B. Block A because it has a larger surface area than each of blocks B and C C. Block C because it has a smaller surface area than each of blocks B and A D. Block C because it has a larger surface area than each of blocks B and A

Question 7

This experiment demonstrates the process of diffusion. Which of the following is a correct definition of this process? A. Diffusion is a passive process involving the movement of a substance across a

semipermeable membrane, against a concentration gradient. B. Diffusion is an active process involving the movement of a substance across a

semipermeable membrane, against a concentration gradient. C. Diffusion is an active process involving the movement of a substance across a

semipermeable membrane, along a concentration gradient. D. Diffusion is a passive process involving the movement of a substance across a

semipermeable membrane, along a concentration gradient.

Question 8

An enzyme is a biological catalyst. Which of the following best describes how an enzyme achieves its purpose? A. It speeds up molecular movement. B. It binds with the substrate. C. It catalyses both anabolic and catabolic reactions. D. It lowers the activation energy required for a reaction to take place.

A B C

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Question 9

The purpose of photosynthesis is to A. convert glucose into a useable form of energy for the cell. B. harness the sun’s energy to convert inorganic nutrients such as water and carbon dioxide into

organic nutrients. C. extract excess carbon dioxide from the atmosphere. D. convert the chemical energy from the sun into light energy.

Question 10

In eukaryotes, aerobic cellular respiration occurs in A. ribosomes. B. chloroplasts. C. mitochondria. D. lungs.

Question 11

Which of the following statements is true regarding the comparison of aerobic and anaerobic cellular respiration? A. Aerobic respiration would be the primary source of energy when an organism is attempting to escape a predator. B. Aerobic respiration is more efficient as it completely breaks down the glucose molecule and creates the maximum possible amount of ATP. C. Anaerobic respiration produces 10 ATP molecules per glucose molecule, whilst aerobic respiration produces 36–38 molecules of ATP. D. Anaerobic respiration is a much slower process and is really only used when an organism is in grave danger.

Question 12

When an organism undergoes mitosis A. the nuclear membrane breaks down during telophase. B. the chromosomes replicate during metaphase. C. the spindle contracts, drawing chromatids to opposite ends of the cell during anaphase. D. the chromosomes line up at the equator during cytokinesis.

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Question 13

The following diagram represents a mammalian artery and vein. Which of the following statements best identifies and describes the function of these vessels? A. A is an artery. Arteries have thick muscular walls and deliver blood away from the heart, towards the functioning cells. B. A is a vein. Veins have thick muscular walls and return blood towards the heart after it has been delivered to the functioning cells. C. B is a vein. It has thin walls and delivers blood away from the heart, towards the functioning cells. D. B is an artery. It has thin walls and contains valves. The blood is returned from the functioning cells, to the heart via these vessels.

Question 14

Plants require transport systems for the circulation of water, inorganic nutrients, hormones and glucose. One type of transport tube in plants is known as xylem. Which of the following is not true in regards to xylem? A. Its structure consists of dead cells. B. It is involved in plant translocation and transpiration. C. It transports water and inorganic nutrients. D. It is located on the inside of the vascular bundle and contributes to the rings found in tree trunks, which enable us to identify the age of a tree.

Question 15

Which of the following is true of red blood cells? A. They have a low surface area to volume ratio so they can bind maximum amounts of

oxygen. B. They have a nucleus. C. They don’t have a nucleus. D. They are long and thin in shape.

A B

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Question 16

Which of the following is not a feature of a closed circulatory system? A. Blood moves around a series of vessels, carrying oxygen and nutrients to all functioning cells. B. It contains a pumping organ such as the heart. C. Vessels carrying the blood return it to the heart. D. Blood leaves the vessels to bathe the tissues and then returns to them.

Use the following information to answer Questions 17—19

Xavier was investigating the conditions required for efficient protein digestion in a mammalian stomach. His experiment involved the following apparatus:

Tube A = A cube of cooked egg white in distilled water. Tube B = A cube of cooked egg white in 1M hydrochloric acid. Tube C = A cube of cooked egg white in 1M hydrochloric acid and 4 mL of pepsin. Tube D = A cube of cooked egg white, chopped into smaller pieces, in 1M hydrochloric acid and 4 mL of pepsin. Xavier incubated the test tubes at 37°C for 5 days.

Question 17

After this time, which test tube would you expect to have shown the most digestion? A. B because the stomach is an acidic environment and protein digestion occurs here. B. C because pepsin is the enzyme that digests protein and its optimum pH is acidic. C. D because it has the same conditions as C but the protein has a higher surface area to volume ratio for more efficient enzyme action. D. D because it has the same conditions as C but the protein has a lower surface area to volume ratio for more efficient enzyme action.

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Question 18

What is the best explanation as to why Xavier had to incubate the test tubes at 37°C? A. It is the core temperature of the human body. B. It is the hottest temperature possible before enzymes start to denature. C. It is the optimum temperature for enzyme activity because it causes enzymes to denature. D. It is in-between the coldest possible and the hottest possible temperatures.

Question 19

Xavier’s experimental design could have been improved. Which of the following would have improved the experimental design and consequently made Xavier’s results more conclusive? A. The inclusion of a control group. B. The use of bread instead of egg white. C. The use of amylase instead of pepsin. D. The inclusion of a fifth test tube containing cooked egg white, pepsin and distilled water.

Question 20

Kidneys are responsible for filtering toxins from the blood such as urea, bicarbonates and any ingested drugs. What is the functional unit, responsible for this filtering called? A. Nephron B. Glomerulus C. Bowman’s capsule D. Loop of Henle

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Question 21

The diagram below shows some specialised cells located on the underside of a plant leaf. Which of the following statements best describes their identity and function?

A. A is a stoma and B is a guard cell. The guard cells open when they are full of water to enable carbon dioxide to enter the plant. B. A is a guard cell and B is a stoma. The guard cells open when they are full of water to enable carbon dioxide to enter the plant. C. A is a stoma and B is a guard cell. The guard cells close when they are full of water to stop

carbon dioxide entering the plant. D. A is a guard cell and B is a stoma. The guard cells open when they are lacking water to enable carbon dioxide to enter the plant.

Question 22

A gas exchange organ consists of thin, well-protected membranes with a high surface area to volume ratio. Which of the following correctly describes the process by which gases such as oxygen and carbon dioxide cross the cell membrane? A. Osmosis B. Active transport C. Simple diffusion D. Inhalation and exhalation

Question 23

Which of the following is true of meiosis? A. It involves two nuclear divisions and produces haploid gametes. B. It involves one nuclear division and produces haploid somatic cells. C. It involves two nuclear divisions and produces diploid gametes. D. It involves one nuclear division and produces diploid gametes.

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END OF SECTION A


Question 24

Which of the following features would not be used to classify an organism? A. Body covering B. Number of limbs C. Height D. Body symmetry

Question 25

Organisms are named according to the Linnaeus binomial system. Using this system, humans are known as Homo sapiens. Which of the following best describes this naming system? A. Homo refers to the kingdom the organism belongs to and sapiens refers to the phylum. B. Homo refers to the genus the organism belongs to and sapiens refers to the class. C. Homo refers to the species the organism belongs to and sapiens belongs to the genus. D. Homo refers to the genus the organism belongs to and sapiens belongs to the species.

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SECTION B – Question 1 – continued Copyright © Insight Publications 2013

SECTION B – Short answer questions

Instructions for Section B

Answer this section in pen. Answer all questions in the spaces provided.

Question 1 (9 marks)

Consider the cell below.

a. In what type of organism are you likely to find this cell?

1 mark

___________________________________________________________________

b. List two features of this cell that support your choice in question 1a.

2 marks

___________________________________________________________________

___________________________________________________________________

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SECTION B – continued TURN OVER


c. Identify the following organelles and state their function. i. A

1 mark

_____________________________________________________________

_____________________________________________________________

ii. B

1 mark

_____________________________________________________________

_____________________________________________________________

iii. C

1 mark

_____________________________________________________________

_____________________________________________________________

iv. D

1 mark

_____________________________________________________________

_____________________________________________________________

v. E

1 mark

_____________________________________________________________

_____________________________________________________________

vi. F

1 mark

_____________________________________________________________

_____________________________________________________________

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Alexander was investigating the movement of molecules across membranes. He set up the following experimental apparatus.

Beaker A Beaker B

In Beaker A, he placed a dialysis bag filled with starch solution and filled it with iodine solution. In beaker B, he placed a dialysis bag filled with starch solution and salivary amylase and filled it with iodine solution. Both beakers were heated to 37°C and left for 60 minutes. Dialysis tubing is a semipermeable membrane made of cellulose. It is used in many biological investigations to examine movement of molecules across a membrane. This is because the size of the dialysis tubing’s pores allows molecules of a similar size as those in an organism’s plasma membrane to pass across. After 60 minutes, Alexander tested the contents of the dialysis tubing and the surrounding water for the presence of starch and glucose. His results are in the table below.

Beaker A Molecule Result Beaker B Molecule Result

Contents of dialysis tube

Glucose Negative Contents of dialysis tube

Glucose Positive

Starch Positive Starch Positive

Surrounding water

Glucose Negative Surrounding

water

Glucose Positive

Starch Negative Starch Negative

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a. Suggest a reason why glucose was present in both regions of Beaker B, but not in

Beaker A. Explain your answer. 2 marks

___________________________________________________________________

___________________________________________________________________

b. There was no starch found in the surrounding water of either Beaker A or Beaker B. Suggest a possible reason for this.

1 mark

___________________________________________________________________

c. From his results, Alexander was able to conclude that simple diffusion had taken

place. i. Define the term ‘diffusion’.

1 mark

_____________________________________________________________

_____________________________________________________________

ii. Which molecule in this experiment has moved across the membrane by

simple diffusion? Give reasons for your answer. 2 marks

_____________________________________________________________

_____________________________________________________________

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Below are the digestive systems from two different animals. a. What type of diet would the organism with Digestive System B be most likely to

consume? Provide two reasons for your choice. 3 marks

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

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Below are the skulls of a herbivore and a carnivore.

Images © DG Mackean and www.biology-resources.com

b. Which skull is most likely to belong to a herbivore? Provide two reasons for your

choice. 3 marks

___________________________________________________________________

___________________________________________________________________

___________________________________________________________________

c. The dentition and digestive systems of herbivores have evolved over millions of

years to facilitate their diet. Explain why the structural and chemical features of these systems are crucial to the efficient digestion of plant matter.

2 marks

___________________________________________________________________

___________________________________________________________________

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Below is a structure found in mammals.

a. i. What is the name of this structure?

1 mark

_____________________________________________________________

ii. In which mammalian organ is it found?

1 mark

_____________________________________________________________

iii. What is the function of the organ mentioned in question 4a(ii)? List one type

of compound involved. 2 marks

_____________________________________________________________

_____________________________________________________________

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b. Fill in the gaps in the following table. 4 marks

Part Name Process

B Bowman’s capsule

C A dense network of capillaries under high pressure responsible for forcing the blood into the Bowman’s capsule.

E Reabsorption. Water is reabsorbed via osmosis as sodium and chloride undergo active transport to maintain the osmotic gradient.

F Collecting duct

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Below is a labelled picture of the reproductive structures in a flowering plant.

a. This is an insect pollinated flower. List two features that suggest this. These features may or may not be visible in the diagram.

2 marks

___________________________________________________________________

___________________________________________________________________

b. List one feature that would be different in a wind pollinated flower. Explain why this

difference is important to the flower’s function. 2 marks

___________________________________________________________________

___________________________________________________________________

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c. i. Plants reproduce via sexual reproduction. Explain how sexual reproduction

differs from asexual reproduction. 1 mark

_____________________________________________________________

_____________________________________________________________

ii. By what process are gametes produced in flowering plants?

1 mark

_____________________________________________________________

iii. Name the structure in the reproductive anatomy of the flowering plant that

has a similar role to the testes of a mammal. Provide a reason for your answer.

2 marks

_____________________________________________________________

_____________________________________________________________

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CONTINUES OVER PAGE

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Below is a picture of the mammalian heart and lungs. These two structures drive the mammalian circulatory system.

a. Mammalian circulatory systems are divided into two circuits. Complete the table below.

2 marks

Circulatory system Role

Pumps deoxygenated blood between the heart and the lungs where it is reoxygenated.

Systemic circulation

b. Why is the mammalian double circulatory system considered to be highly efficient?

2 marks

___________________________________________________________________

___________________________________________________________________

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SECTION B – continued Copyright © Insight Publications 2013


Cellular respiration occurs in all living organisms. a. Write the word equation for cellular respiration in the space below.

1 mark

___________________________________________________________________

b. When does cellular respiration occur in living organisms?

1 mark

___________________________________________________________________

c. Not all the chemical energy from glucose is converted into chemical energy in the

ATP molecules. In what form is energy lost during this reaction? 1 mark

___________________________________________________________________

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Below is a dichotomous key for leaves.

a. Identify leaf VII using the dichotomous key.

1 mark

___________________________________________________________________

b. Describe one limitation of a dichotomous key.

1 mark

___________________________________________________________________

c. List two reasons why it is important to be able to identify organisms.

2 marks

___________________________________________________________________

___________________________________________________________________

END OF QUESTION AND ANSWER BOOK

YEAR 11 Trial Exam Paper 2013 - SCSC Year 11...

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