WorksheetsScience F4 Chapter 4,5,6
Total questions: 48
Worksheet time: 24mins
Below are the four main pillars of National Green Technology Policy, except?
Energy
Environment
Economy
Efficiency
What is the benefit of energy efficiency?
Country’s economy can be strengthened and wastage can be reduced
Improve the quality of life
Burning of fossil fuels produce greenhouse gases
Emissions of greenhouse gases cause climate change
Tick the sectors can be found in Green Technology.
AGRICULTURE & FORESTRY SECTOR
ENVIRONMENTAL SECTOR
TRANSPORTATION SECTOR
ENERGY SECTOR
FOSSIL FUEL SECTION
Tick the socio-scientific issues related to the energy sector.
Socio-scientific issues caused by human activities
Emphasises soil nutrient care and improvement in agriculture
Emissions of greenhouse gases cause climate change
Greenhouse effect cause draughts, flash floods, increase Earth’s temperature
What measures should be taken to conserve energy?
Maximise the usage of renewable energy in Green Technology to reduce the content of carbon dioxide in the air
Burning of fossil fuels
Logging activities have to be regulated to conserve forest resources
Consumer should save electricity
Mr. Kevin;s workplace decides to reduced paper wastage. Which of the following actions is not suitable to be carried out?
Use both sides of the paper when printing
Use electrical mail, internet, intranet and documents scanner
Use only one side of paper
Do not print single line email messages
Below are the socio-scientific issues in the waste and wastewater management sector, except?
Sewage, chemical waste and rubbish that disposal into rivers and seas, impact the ecosystem of rivers and seas
Production, management and decomposition of solid waste causes greenhouse effect and climate change
Food leftover not disposal properly cause environmental pollution
Human breathe and exhaled carbon dioxide which cause climate change
What causes landslide and mud floods to happen?
Replanting trees
Uncontrolled logging activities
Widespread use of pesticides & chemical fertilisers
Treat waste into compost
What are socio-scientific issues in the Agriculture and Forestry sector?
Deforestation
Massive forest exploration
Open burning
Widespread use of pesticides & chemical fertilisers
Which of the following is FALSE related to natural Gas Vehicle (NGV) ?
Liquefied natural gas (LNG)
Compressed natural gas (CNG)
Gassed natural gas (GNG)
Modified the vehicle that rely on petrol to use NGV
What is green transportation?
Refer to any form of transportation that releases very minimal greenhouse gases
Refer to vehicle that use as transport must be painted green
Refer to the vehicle that produce energy from burning fossil fuel
Refer to transportation using electricity, such as monorail.
Biofuel is an alternative for petroleum, which refer to fatty acid methyl ester that produced from ____________?
waste and wastewater
plant oil
decomposed of dead bodies
animal fats
What is carbon footprint?
The amount of methane gases produced and released to atmosphere as a result of industry production
The amount of greenhouse gas, such as carbon dioxide, released into atmosphere as result of human activities
The amount of carbon dioxide that used to carry out photosynthesis
The amount of methane gases used in the chemical production industry
Which of the following methods has no effects on reducing household wastes?
Washing clothes by hands and not using a washing machine
Buying foods with no packaging
Choose for all bills to be sent through e-mail
Reduce food wastage
The tapir is one of the protected species in Malaysia. The diagram shows a tapir killed by a van while crossing the road. Which of the following solutions is the most practical to prevent such incident?
Putting up electrical fences all along the road
Putting up signboards at tapir crossings so that drivers will slow down
Capture and relocate the tapirs
Build safe passage ways for tapir to cross
Which of the following is correct about DNA?
Deoxyribonucleic acid or DNA and made up of basic units known as nucleotides
Each nucleotide contains three components, those are Deoxyribose sugar, Nitrogenous base and Phosphate group
DNA is made of two twisted antiparallel polynucleotide chains forming a structure called double helix
Healthy human body cell contains 48 chromosomes
Which of the following is correct related to the diagram?
Arrangement of chromosome according to shape and size, the arrangement called karyotype
Human body cell contains 46 chromosomes
Each chromosomes exists in pairs of similar shape and size and known as homologous chromosomes
Consists of 22 pairs of autosomes and one pair of sex chromosome
"To produce new cells for growth and repair of damaged tissues"
The statement above is describing Mitosis or Meiosis process?
Mitosis
Meiosis
"Reproductive organ to produce gametes for sexual reproduction. Take place in male’s testes and female’s ovary and take place in plant anther and ovary"
The statement above is describing Mitosis or Meiosis process?
Mitosis
Meiosis
"Produce four distinct cells, nucleus of parent cell divides
twice, half the number of those in the parent cell (n=23) HAPLOID"
The statement above is describing Mitosis or Meiosis process?
Mitosis
Meiosis
"No variation, DIPLOID and no crossing over occur"
The statement above is describing Mitosis or Meiosis process?
Mitosis
Meiosis
The gene characteristics below are dominant allele, except?
Black hairs
Curly hairs
Free ear lobes
Able to roll the tongue
short
Ticks the phenotype of inheritance characteristics below.
Tall
TT
Short
tt
Which of the following shown the genotype of a male baby?
XY
XX
44+XY
44+XX
A man with genotype of TT marry with a women with genotype of tt, how many percentage of their kids born to be tall?
100%
50%
25%
0%
Which of the following are the examples of chromosome mutation?
Down syndrome
Colour blindness
Klinefelter syndrome
Turner syndrome
Sickle cell anaemia
Which of the following are the example of gene mutation?
Colour blindness
Sickle cell anaemia
Thalassemia
Haemophilia
Albinism
Choose the methods which can identify gene disorder disease.
Amniocentesis
Forensic science
Genetic genealogy
Karyotyping
Gene therapy
A man (colour blindness)XbY marry a woman (gene disorder disease carrier) XBXb
How many percentage of their kids will be gene disorder disease carrier?
100%
50%
25%
0%
What is the advantages of Genetic modified organism (GMO)?
New organism is produced to increase commercial quality
Produce more plants that required shorter time to harvest
Produce new species of organism to replace the old species and causing extinction of the original species.
Causing mutation when human consume the GMO food
Which of the factors below is environmental factors causing variation?
crossing over
pH of surrounding
sunlight
temperature
random fusion of gametes
Which of the following graph shown the continuous variation?
Which of the following are the examples of discontinuous variation?
ABO blood group
Height
Skin colour
type of fingerprint
type of earlobe
Select the importance of variation.
Help organism to camouflage to protect from predators
To ensure the survival/adopt of species under changing environment
to combine two different species to produce a new genetic characteristic
Enable to differentiate individuals from same species
Which of the following is WRONG regarding discontinuous
variation?
No intermediates
Can be inherited
Qualitative
Quantitative
Distinct characteristics
Below are the types of support in animals, except?
Endoskeleton
Exoskeleton
Hydrostatic skeleton
Airboneskeleton
Which of the below is true about the exoskeleton growth curve?
Growth curve in stage because exoskeleton is made up of hard chitin and unable to expand
Sigmoid-shaped growth curve
Step-shaped growth curve
Select the condition of earthworm when its body is thin and long.
circular muscle contract
circular muscle relax
longitudinal muscle relax
longitudinal muscle contract
Chaetae release grip
The following are the functions of endoskeleton in animals, except?
Strong & firm skeleton to support the body
Body weight supported by terrestrial vertebrates especially pectoral girdle胸骨 and pelvic girdle骨盆.
Weight is supported by buoyancy force
Hollow and light bone, size of bird’s skull 颅骨is small
Consists of an outer layer of waxy chitin or shell
Select the characteristics of birds regarding to its endoskeleton system.
Bone structure that is adopted for flying
Body weight supported by terrestrial vertebrates especially pectoral girdle
Flat & wide sternum bone胸骨 (breast bone) attachment of muscle for fly
Hollow and light bone, size of bird’s skull 颅骨is small
choose the axial skeleton in human skeleton system
skull
vertebral column
sternum and ribs
pectoral girdle
pelvic girdle
Select the upper limbs in human skeleton system.
Humerus
Femur
Patella
metacarpus
Which of the following is the benefit of hollow bone?
Big, compare and strong bone
Weight is supported by endoskeleton
Need less calcium & phosphorus
heavy and strong
Please select the options below which can increase the stability in animals.
lower centre of gravity
bigger base area
smaller base area
higher centre of gravity
What is ligament?
Connective tissue, elastic, flexible and strong to hold and connect to bone bones and allow movement.
A connective tissue, connect muscle to the bone, a medium to transfer the muscle contraction force to the bone. Consist of a combination of fibres that are strong and inelastic.
tissues formed by aligned fibres, muscle cell contains mitochondria to generate energy for contraction and relaxation of muscles
act as lubricant, provide nutrient to cartilage
When our arm bends, what happen to our biceps and triceps muscles?
Biceps contract
Biceps relax
Triceps relax
Triceps contract
What is the functions of support system of plants?
The plant is said to be stable if it does not fall easily
The stability is influenced by the centre of gravity and the base area
The lower the centre of gravity, the more stable the plant
help plants to stand vertically, to obtain sunlight, to carry out photosynthesis.
Select the method to determine the age of woody plants
Cut down the tree and rings are counted.
Stem of tree is drilled out by drill bit, then the rings are counted.
calculate the height of the plant
calculate the weight of the plant
