Biology Paper 1 MCQ - Oct/Nov 2002

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Questions and Answers

What are the two processes involved in waste removal from the body?

Egestion and excretion.

Identify the vertebrate that is classified as a mammal based on the characteristics provided.

Which specific classification is needed to identify a frog in the binomial nomenclature system?

Genus: Rana.

In liver cells, which two parts of a plant cell are present?

W and Z. Signup and view all the answers

In which part of the plant cell does photosynthesis primarily occur?

Part Z. Signup and view all the answers

At what level of organization are the ovum and the uterus categorized?

Cell and organ. Signup and view all the answers

What are the identifying structures X and Y in the diagram of the eye?

X is the lens; Y is the retina. Signup and view all the answers

What is the correct option describing sexual reproduction involving two parents?

C: two parents, genetically different from parents. Signup and view all the answers

Identify the hormones present in the blood of females and males depicted in the graph.

Females have oestrogen and males have testosterone. Signup and view all the answers

Which contraceptive method is represented by the letter C in the table?

Contraceptive device (IUD). Signup and view all the answers

Discuss the significance of well-watered conditions for seed germination.

Well-watered conditions are crucial as they provide the necessary moisture for seeds to absorb and initiate the germination process. Signup and view all the answers

What is a key characteristic that distinguishes the offspring of sexual reproduction?

Offspring are genetically different from their parents. Signup and view all the answers

What substance was found in the water in the test-tube after the experiment?

Amino acids Signup and view all the answers

Which chamber of the heart receives blood directly from the lungs?

Chamber P Signup and view all the answers

What is indicated by the term 'double circulation' in the context of the human heart?

Blood flows twice through the heart. Signup and view all the answers

Which air sample represents air that has just been exhaled?

Sample B Signup and view all the answers

What would be the expected appearance of the balloons in the anaerobic yeast respiration experiment after one day?

Balloon Q will be inflated. Signup and view all the answers

What are the two products of anaerobic respiration in yeast?

Ethanol and carbon dioxide Signup and view all the answers

In the context of blood flow, what does statement D imply about blood passing from Q?

Blood passes directly from Q to the lungs. Signup and view all the answers

Which air sample contains the highest percentage of carbon dioxide?

Sample B Signup and view all the answers

In the human circulatory system, which vessel first contains the breakdown products of alcohol?

liver Signup and view all the answers

If dye is injected into the blood supply of the kidneys and it does not appear in the excretory system, what part is likely blocked?

one ureter Signup and view all the answers

In a reflex action, what term is used to describe light, temperature, and chemicals?

stimuli Signup and view all the answers

How do the circular and radial muscles in the eye affect pupil size when light levels change?

circular muscles relax, radial muscles contract Signup and view all the answers

Which method of contraception is indicated as the most effective based on the pregnancy outcomes of four groups of 100 women?

The method with the lowest number of pregnancies Signup and view all the answers

What can be inferred about the status of balloon Q when all conditions lead to no change?

Balloon Q remains inflated. Signup and view all the answers

In terms of biological functions, what roles do the kidneys play in the excretory system?

Filtration and excretion of waste products. Signup and view all the answers

Define the term 'effectors' in the context of a reflex action.

Muscles or glands that carry out the response. Signup and view all the answers

What process is represented by arrow X in the carbon dioxide cycle?

Photosynthesis Signup and view all the answers

Which process at point P in the water cycle returns water vapour to the air?

Respiration Signup and view all the answers

Identify the process by which decomposing material in soil returns carbon dioxide to the atmosphere.

Decay Signup and view all the answers

Which process is involved in the conversion of fossil fuels into energy?

Combustion Signup and view all the answers

In the absence of limiting factors, how does a population typically grow over time?

Exponentially Signup and view all the answers

What environmental issue could arise from fertiliser runoff into a lake?

Eutrophication Signup and view all the answers

What do green plants absorb from the atmosphere during photosynthesis?

Carbon dioxide Signup and view all the answers

What is the main byproduct of respiration in living organisms?

Water vapour and carbon dioxide Signup and view all the answers

What are two essential characteristics common to all living organisms?

All living organisms exhibit growth and reproduction. Signup and view all the answers

How do organisms maintain homeostasis?

Organisms maintain homeostasis through regulatory mechanisms that balance internal conditions. Signup and view all the answers

Which characteristic allows organisms to respond to stimuli?

The ability to respond to stimuli is facilitated by the presence of a nervous system in complex organisms. Signup and view all the answers

What role does metabolism play in living organisms?

Metabolism encompasses all chemical processes that convert food into energy and build cellular components. Signup and view all the answers

Describe the importance of cellular organization in living organisms.

Cellular organization is important as it allows for specialized functions within different cell types. Signup and view all the answers

Why is evolution considered a characteristic of living organisms?

Evolution occurs as organisms adapt to their environment over generations through natural selection. Signup and view all the answers

How does reproduction contribute to the continuity of life?

Reproduction allows organisms to produce offspring, ensuring the continuation of their genetic material. Signup and view all the answers

What is the significance of growth and development in organisms?

Growth and development indicate an organism's progression through life stages from birth to maturity. Signup and view all the answers

Study Notes

Biology Paper 1 Multiple Choice - October/November 2002

Exam Duration: 45 minutes
Paper Code: 0610/1
Number of Questions: 40
Instructions:
- Do not open the booklet until instructed.
- Write your name, center number, and candidate number on the answer sheet.
- Answer all questions. Choose one correct answer (A, B, C, or D) and record it on the separate answer sheet.
- Read instructions carefully on the answer sheet.

Characteristics of Living Organisms

All organisms exhibit egestion and excretion, or egestion and nutrition, or excretion and nutrition, or nutrition and photosynthesis.

Vertebrate Classification

Mammals are vertebrates that exhibit the characteristic of having hair.
Mammals also lay eggs, have scales, feathers, wings, or are covered with scales.

Biological Classification

For classifying a frog, the needed information is the genus (e.g., Rana) and the class (e.g., amphibian).
The phylum, kingdom, or class level are not enough to precisely classify a frog

Plant Cell Structures

Parts common to plant and liver cells are W and X or W and Z.
Photosynthesis occurs in structure Y in a plant cell.

Levels of Organization

Ovum and uterus are both organs in the female reproductive system.

Structures of the Eye

Structures X and Y in an eye diagram represent organs that are part of a larger organ system.

Plant Cell Response to Solution

The changes in plant cell appearance after 30 minutes in a concentrated solution are depicted by the provided diagram.

Oxygen Movement

Oxygen moves into root hair cell cytoplasm through diffusion.

Enzyme Actions

Enzymes are catalysts.
Enzyme activity is dependant on various factors, such as pH and temperature.

Enzyme Activity and Graphing

The horizontal axis of an enzyme activity graph should represent temperature.

Xylem Vessel Structure

Xylem vessels have thick side walls and absent thick end walls.

Photosynthesis Products

The products of photosynthesis are oxygen and sugar.

Gaseous Exchange in Leaves

Gaseous exchange, primarily the intake of carbon dioxide and release of oxygen, takes place between points Q and S of the leaf diagram.

Digestible Nutrients

Starch is the only nutrient in the provided table that requires no digestion.

Diffusion Experiment

After 15 minutes in the diffusion experiment, amino acids were found in the surrounding water from the tube

Human Heart Chambers

Blood flows into the heart's chamber P(the right atrium) directly from the lungs

Blood Circulation

Double circulation means blood travels through the heart twice in a complete circuit of the body.

Air Sample Analysis

The air sample that contains 4% carbon dioxide and 20% oxygen.

Anaerobic Respiration in Yeast

After a day, the balloon labelled 'P' containing yeast, sugar, and water should inflate in the provided anaerobic respiration experiment.

Alcohol Breakdown

Blood vessels containing the breakdown products of alcohol are first found in the liver.

Kidney Dye Experiment

A blocked portion will prevent dye from traveling.

Reflex Action Components

Light, temperature, and chemical stimuli are all detected by sensory receptors in a reflex response.

Pupil Size Regulation

The radial muscles contract to enlarge the pupil when the circular muscles are relaxed.

Contraception Effectiveness

The pill is the most effective method of contraception among the options presented in the graph.

Modes of Reproduction

Sexual reproduction involves two parents producing offspring that are genetically different.

Hormones and Age

The hormones visible in the graph are oestrogen in females and testosterone in males.

Seed Germination

For germination, seeds require suitable warmth, oxygen, and the lack of/absence of carbon dioxide

Growth Curve Analysis

Fresh mass is the most accurate variable for the y-axis of a growth curve

Chromosomes and Sex Determination

The combination of an X sex chromosome in both the egg and sperm leads to a female child.

Sperm Cell Structure

The head of a sperm cell contains genes.

Mendelian Genetics

Crossing Rr plants with Rr plants will result in a proportion of 3 round seeds to every 1 wrinkled seeds.
The results of the breeding experiment based on the genotypes are shown above.

Simplified Food Web

The sun is the source of energy in the given food chain diagram.

Food Chain Energy Loss

The least energy is lost in the food chain involving potatoes and humans.

Photosynthesis Representation

The process of photosynthesis is represented by arrow X in the diagram.

Water Cycle Process

Condensation will return water vapor to the air.

Population Growth

Graph C shows the growth of a population without limiting factors, showcasing unchecked growth.

Fertiliser Impact

The fertiliser increase plant growth both in the fields and the lake.

Pesticide Concentration

The pesticide concentration in the bird of prey is the highest according to the food chain diagram showing the trophic levels.

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Description

Test your knowledge with this multiple-choice quiz covering core topics from Biology Paper 1. With 40 questions, it explores characteristics of living organisms, vertebrate classification, and biological classification. Perfect for students preparing for their exams!