WorksheetsWJEC Year 10 Biology Revision Bilingual
Total questions: 64
Worksheet time: 32mins
Beth yw swyddogaeth y mitocondria? / What is the function of the mitochondria?
Safle ffotosynthesis / Site of photosynthesis
Safle resbiradaeth aerobig, yn rhyddhau egni ar ffurf ATP / Site of aerobic respiration, releasing energy in the form of ATP
Yn rheoli rhaniad celloedd / Controls cell division
Yn storio gwybodaeth enetig / Stores genetic information
Beth yw rôl y gellbilen? / What is the role of the cell membrane?
Yn darparu cefnogaeth strwythurol / Provides structural support
Yn rheoli pa sylweddau sy'n symud i mewn ac allan o'r gell / Controls which substances move in and out of the cell
Yn syntheseiddio proteinau / Synthesises proteins
Yn storio maetholion / Stores nutrients
Beth yw swyddogaeth cloroplastau?
What is the function of chloroplasts?
Amsugno golau ar gyfer ffotosynthesis
Absorbing light for photosynthesis
Storio dŵr
Storing water
Torri i lawr ddeunyddiau gwastraff
Breaking down waste materials
Cynhyrchu proteinau
Producing proteins
Beth yw pwrpas lliwio celloedd cyn eu harsylwi o dan ficrosgop?
What is the purpose of staining cells before observing them under a microscope?
I wneud i'r celloedd dyfu'n gyflymach
To make the cells grow faster
I weld y strwythurau'n fwy clir
To see the structures more clearly
I newid lliw y celloedd
To change the color of the cells
I ladd y celloedd
To kill the cells
Beth yw ystyr y term 'diffusion'?
What is the meaning of the term 'diffusion'?
Symudiad gronynnau o grynodiad uchel i grynodiad isel, i lawr graddiant crynodiad
Movement of particles from a high concentration to a low concentration, down a concentration gradient
Symudiad gronynnau o grynodiad isel i grynodiad uchel
Movement of particles from a low concentration to a high concentration
Symudiad dŵr ar draws pilen
Movement of water across a membrane
Symudiad gronynnau yn erbyn graddiant crynodiad
Movement of particles against a concentration gradient
Beth yw ystyr y term 'osmosis'?
What is the meaning of the term 'osmosis'?
Symudiad moleciwlau dŵr ar draws pilen athraidd ddetholus.
The movement of water molecules across a selectively permeable membrane.
Symudiad moleciwlau ocsigen i mewn i gelloedd.
The movement of oxygen molecules into cells.
Symudiad carbon deuocsid allan o gelloedd.
The movement of carbon dioxide out of cells.
Symudiad glwcos i mewn i'r llif gwaed.
The movement of glucose into the bloodstream.
Beth yw 'ateb gwan'?
What is a 'dilute solution'?
Ateb gyda chrynodiad uchel o hydoddyn.
A solution with a high concentration of solute.
Ateb gyda chrynodiad isel o hydoddyn.
A solution with a low concentration of solute.
Ateb heb unrhyw hydoddyn.
A solution with no solute.
Ateb gyda hydoddyn a hydoddydd cyfartal.
A solution with equal amounts of solute and solvent.
Beth sy'n digwydd i gell anifail mewn hydoddiant hypertonig?
What happens to an animal cell in a hypertonic solution?
Bydd y gell yn ffrwydro.
The cell will burst.
Bydd y gell yn crebachu.
The cell will shrink.
Bydd y gell yn aros yr un fath.
The cell will stay the same.
Bydd y gell yn dod yn chwyddedig.
The cell will become swollen.
Beth yw 'plasmolysis'?
What is 'plasmolysis'?
Chwythu cell planhigyn.
Bursting of a plant cell.
Syrthio'r gellbilen i ffwrdd o fur y gell.
The cell membrane pulling away from the cell wall.
Symudiad dŵr i mewn i gell.
Movement of water into a cell.
Symudiad hydoddion allan o gell.
Movement of solutes out of a cell.
Beth yw swyddogaeth ensymau mewn cell? / What is the function of enzymes in a cell?
I storio egni / To store energy
I gatalyddu a rheoleiddio adweithiau cemegol / To catalyse and regulate chemical reactions
I gludo ocsigen / To transport oxygen
I ddarparu cefnogaeth strwythurol / To provide structural support
O ba fath o foleciwlau y ffurfir ensymau? / From what type of molecules are enzymes formed?
Carbohydradau / Carbohydrates
Lipidau / Lipids
Proteinau (asidau amino) / Proteins (amino acids)
Asidau niwclëig / Nucleic acids
Pa ran o ensym sy'n gyfrifol am gatalyddu adwaith cemegol?
Which part of an enzyme is responsible for catalysing a chemical reaction?
Y swbstrad
The substrate
Y safle actif
The active site
Y cymhlygyn ensym-swbstrad
The enzyme-substrate complex
Y cynnyrch
The product
Beth yw'r enw a roddir i'r model sy'n disgrifio sut mae ensymau'n gweithio?
What is the name given to the model that describes how enzymes work?
Model Clo a Chlo
Lock and Key Model
Model Ffit Anwythol
Induced Fit Model
Model Mosaic Hylifol
Fluid Mosaic Model
Model Helics Dwbl
Double Helix Model
Mae pob ensym yn cael ei ffurfio o gadwyni o ________ ________.
Every enzyme is made up of chains of ________ ________.
Asidau amino
Amino acids
Asidau brasterog
Fatty acids
Niwcleotidau
Nucleotides
Monosacaridau
Monosaccharides
Beth yw ystyr y term "tymheredd gorau" mewn gweithgaredd ensymau?
What does the term "optimum temperature" mean in enzyme activity?
Y tymheredd lle mae'r ensym yn anweithgar
The temperature at which the enzyme is inactive
Y tymheredd lle mae cyfradd y adwaith yn uchaf
The temperature at which the reaction rate is highest
Y tymheredd lle mae'r ensym yn dadnatureiddio
The temperature at which the enzyme denatures
Y tymheredd lle mae'r ensym yn lleiaf effeithiol
The temperature at which the enzyme is least effective
Beth sy'n digwydd i strwythur ensym pan gaiff ei ddadnatureiddio? / What happens to the structure of an enzyme when it is denatured?
Mae'r ensym yn dod yn fwy gweithredol / The enzyme becomes more active
Mae siâp penodol yr ensym yn newid, ac nid yw'r swbstrad yn ffitio mwyach / The specific shape of the enzyme changes, and the substrate no longer fits
Mae gweithgaredd yr ensym yn cynyddu / The activity of the enzyme increases
Mae siâp yr ensym yn aros yr un fath / The shape of the enzyme stays the same
Beth yw hafaliad geiriol resbiradaeth aerobig?
What is the word equation for aerobic respiration?
Ocsigen + Glwcos → Carbon deuocsid + Dŵr (+ egni/ATP)
Oxygen + Glucose → Carbon dioxide + Water (+ energy/ATP)
Glwcos → Asid lactig (+ egni/ATP)
Glucose → Lactic acid (+ energy/ATP)
Carbon deuocsid + Dŵr → Ocsigen + Glwcos
Carbon dioxide + Water → Oxygen + Glucose
Glwcos + Ocsigen → Asid lactig (+ egni/ATP)
Glucose + Oxygen → Lactic acid (+ energy/ATP)
Pam mae resbiradaeth anaerobig yn llai effeithlon na resbiradaeth aerobig?
Why is anaerobic respiration less efficient than aerobic respiration?
Mae'n cynhyrchu mwy o ATP fesul moleciwl glwcos
It produces more ATP per glucose molecule
Mae'n defnyddio mwy o ocsigen
It uses more oxygen
Mae'n cynhyrchu llai o ATP fesul moleciwl glwcos
It produces less ATP per glucose molecule
Mae'n torri glwcos i lawr yn llwyr
It breaks down glucose completely
Beth yw swyddogaeth mwcws yn y system resbiradol? / What is the function of mucus in the respiratory system?
I gludo ocsigen i'r gwaed / To transport oxygen to the blood
I ddal unrhyw ronynnau neu facteria a anadlir i'r ysgyfaint / To trap any particles or bacteria inhaled into the lungs
I gynyddu'r arwynebedd ar gyfer cyfnewid nwy / To increase the surface area for gas exchange
I gynhyrchu sain / To produce sound
Beth yw'r dilyniant o strwythurau y mae aer yn pasio drwyddynt yn y system resbiradol?
What is the sequence of structures that air passes through in the respiratory system?
Ceg - Oesoffagws - Stumog - Coluddion
Mouth - Oesophagus - Stomach - Intestines
Trwyn - Pharyncs - Laryncs - Tracea
Nose - Pharynx - Larynx - Trachea
Ceg - Tracea - Bronci - Alfeoli
Mouth - Trachea - Bronchi - Alveoli
Trwyn - Bronci - Alfeoli - Stumog
Nose - Bronchi - Alveoli - Stomach
Beth yw'r term a ddefnyddir ar gyfer sylweddau mewn sigaréts sy'n cynyddu'r risg o ganser yr ysgyfaint? / What is the term used for substances in cigarettes that increase the risk of lung cancer?
Nicotin / Nicotine
Carcinogenau / Carcinogens
Tar / Tar
Carbon monocsid / Carbon monoxide
Beth yw effaith mwg sigaréts ar y cilïau yn y system resbiradol?
What is the effect of cigarette smoke on the cilia in the respiratory system?
Maen nhw'n tyfu'n hirach
They grow longer
Maen nhw'n cael eu parlysu
They become paralyzed
Maen nhw'n lluosi'n gyflym
They multiply rapidly
Maen nhw'n dod yn fwy gweithgar
They become more active
Pa glefyd sydd mewn perygl uwch o ddatblygu oherwydd ysmygu?
Which disease is at higher risk of developing due to smoking?
Asma
Asthma
Emffysema
Emphysema
Diabetes
Diabetes
Uwchbwysedd gwaed
High blood pressure
Beth yw swyddogaeth lipas yn y corff?
What is the function of lipase in the body?
Yn torri carbohydradau i lawr
Breaks down carbohydrates
Yn torri proteinau i lawr
Breaks down proteins
Yn torri brasterau i lawr yn glyserol ac asidau brasterog
Breaks down fats into glycerol and fatty acids
Yn torri asidau niwclëig i lawr
Breaks down nucleic acids
Pa adweithydd a ddefnyddir i brofi am bresenoldeb startsh, a beth yw'r newid lliw os yw'n bositif?
Which reagent is used to test for the presence of starch, and what is the colour change if it is positive?
Biuret - glas i fioled
Biuret - blue to violet
Benedict - glas i goch fricsen
Benedict - blue to brick red
Iodin - brown i las/du
Iodine - brown to blue/black
Sudan III - coch i oren
Sudan III - red to orange
Beth yw rôl bustl yn y system dreulio?
What is the role of bile in the digestive system?
Mae'n amsugno dŵr.
It absorbs water.
Mae'n emwlsio moleciwlau braster mawr.
It emulsifies large fat molecules.
Mae'n secretu ensymau.
It secretes enzymes.
Mae'n niwtraleiddio asid y stumog.
It neutralises stomach acid.
Pa organ sy'n secretu bustl? / Which organ secretes bile?
Stomog / Stomach
Pancreas / Pancreas
AfÃg / Liver
Coluddyn bach / Small intestine
Beth yw swyddogaeth y filysau yn y coluddyn bach? / What is the function of the villi in the small intestine?
I gynyddu arwynebedd ar gyfer amsugno. / To increase the surface area for absorption.
I secretu ensymau treulio. / To secrete digestive enzymes.
I niwtraleiddio asid stumog. / To neutralise stomach acid.
I gynhyrchu bustl. / To produce bile.
Pam mae'r corff angen carbohydradau? / Why does the body need carbohydrates?
I adeiladu proteinau. / To build proteins.
I ddarparu egni neu ei storio fel glycogen. / To provide energy or store it as glycogen.
I gynhyrchu hemoglobin. / To produce hemoglobin.
I gynnal meinweoedd iach. / To maintain healthy tissues.
Beth yw pwrpas peristalsis yn y system dreulio?
What is the purpose of peristalsis in the digestive system?
I secretu ensymau.
To secrete enzymes.
I amsugno maetholion.
To absorb nutrients.
I wthio bwyd trwy'r system dreulio.
To push food through the digestive system.
I gynhyrchu bustl.
To produce bile.
Beth yw swyddogaeth celloedd gwaed gwyn?
What is the function of white blood cells?
Cludo ocsigen
Transport oxygen
Amddiffyn y corff rhag afiechyd
Defend the body against disease
Cludo maetholion
Transport nutrients
Rheoleiddio tymheredd
Regulate temperature
Pa gydran o waed sy'n helpu i geulo?
Which component of blood helps in clotting?
Celloedd gwaed coch
Red blood cells
Celloedd gwaed gwyn
White blood cells
Plâtennau
Platelets
Plasma
Plasma
Enwch y pigment a geir mewn celloedd gwaed coch sy'n cludo ocsigen.
Name the pigment found in red blood cells that carries oxygen.
Cloroffyl
Chlorophyll
Hemoglobin
Hemoglobin
Melanin
Melanin
Ceratin
Keratin
Pa bibell waed sy'n cludo gwaed dadocsigenedig o'r galon i'r ysgyfaint?
Which blood vessel carries deoxygenated blood from the heart to the lungs?
Rhydweli ysgyfeiniol
Pulmonary artery
Aorta
Aorta
Vena cava
Vena cava
Rhydweli coronaidd
Coronary artery
Esboniwch pam mae'r pwysedd gwaed yn uwch yn yr aorta o'i gymharu â'r rhydweli ysgyfeiniol.
Explain why the blood pressure is higher in the aorta compared to the pulmonary artery.
Mae'r fentrigl chwith yn cyfangu'n fwy grymus na'r fentrigl dde
The left ventricle contracts more forcefully than the right ventricle
Mae'r aorta'n gulach na'r rhydweli ysgyfeiniol
The aorta is narrower than the pulmonary artery
Mae'r fentrigl dde yn pwmpio mwy o waed
The right ventricle pumps more blood
Mae'r rhydweli ysgyfeiniol yn agosach at y galon
The pulmonary artery is closer to the heart
Beth yw swyddogaeth falfiau'r galon?
What is the function of the heart valves?
I bwmpio gwaed i'r ysgyfaint
To pump blood to the lungs
I atal llif gwaed yn ôl
To prevent the backflow of blood
I gynyddu pwysedd gwaed
To increase blood pressure
I hidlo gwaed
To filter blood
Beth yw'r term ar gyfer y system gylchrediad sy'n cynnwys y galon a'r ysgyfaint?
What is the term for the circulatory system that includes the heart and the lungs?
Cylchrediad systemig
Systemic circulation
Cylchrediad ysgyfeiniol
Pulmonary circulation
Cylchrediad coronaidd
Coronary circulation
Cylchrediad lymffatig
Lymphatic circulation
Beth yw enw'r falf sy'n atal gwaed rhag llifo'n ôl i'r atriwm chwith?
What is the name of the valve that prevents blood from flowing back into the left atrium?
Falf driphlyg
Tricuspid valve
Falf mitral
Mitral valve
Falf aortig
Aortic valve
Falf ysgyfeiniol
Pulmonary valve
Beth yw rôl y capilarïau yn y system gylchredol?
What is the role of capillaries in the circulatory system?
I gludo ocsigen i'r ysgyfaint
To transport oxygen to the lungs
I gysylltu rhydwelïau a gwythiennau
To connect arteries and veins
I storio gwaed
To store blood
I reoleiddio pwysedd gwaed
To regulate blood pressure
Pa sylweddau sy'n cael eu cyfnewid rhwng y gwaed a'r meinweoedd mewn capilarïau?
Which substances are exchanged between the blood and the tissues in capillaries?
Glwcos ac ocsigen
Glucose and oxygen
Carbon deuocsid a dŵr
Carbon dioxide and water
Proteinau a brasterau
Proteins and fats
Fitaminau a mwynau
Vitamins and minerals
Pa fath o egni sy'n cael ei amsugno ar gyfer ffotosynthesis? / What type of energy is absorbed for photosynthesis?
Gwres / Heat
Golau / Light
Sain / Sound
Cinetig / Kinetic
Pa organig sy'n cael ei ddefnyddio mewn ffotosynthesis i ffurfio bwyd?
Which organelle is used in photosynthesis to make food?
Mitocondria
Mitochondria
Ribosom
Ribosome
Cloroplast
Chloroplast
Cnewyllyn
Nucleus
Pa bigment mewn celloedd planhigion sy'n amsugno egni golau?
Which pigment in plant cells absorbs light energy?
Hemoglobin
Melanin
Cloroffyl
Ceratin
Enwch y nwy a gymerir i mewn gan gelloedd planhigion yn ystod ffotosynthesis.
Name the gas taken in by plant cells during photosynthesis.
Ocsigen
Oxygen
Nitrigen
Nitrogen
Carbon Deuocsid
Carbon Dioxide
Hydrogen
Hydrogen
Beth yw dau gynnyrch ffotosynthesis?
What are two products of photosynthesis?
Ocsigen a Glwcos
Oxygen and Glucose
Dŵr a charbon deuocsid
Water and carbon dioxide
Nitrogen ac Ocsigen
Nitrogen and Oxygen
Glwcos a Dŵr
Glucose and Water
Mewn pa ffurf y mae glwcos yn cael ei storio mewn planhigion? / In what form is glucose stored in plants?
Cellwlos / Cellulose
Startsh / Starch
Protein / Protein
Braster / Fat
Pa ffactor all gyfyngu ar gyfradd ffotosynthesis? / Which factor can limit the rate of photosynthesis?
Tymheredd / Temperature
Math o bridd / Type of soil
Cyflymder y gwynt / Wind speed
Uchder / Altitude
Beth yw ffynhonnell wreiddiol egni ar gyfer organebau byw?
What is the original source of energy for living organisms?
Y lleuad
The moon
Yr haul
The sun
Y gwynt
The wind
Y cefnfor
The ocean
Diffiniwch y term 'cynhyrchydd'.
Define the term 'producer'.
Organeb sy'n bwyta organebau eraill
An organism that eats other organisms
Organeb sy'n cynhyrchu bwyd drwy ffotosynthesis
An organism that produces food by photosynthesis
Organeb sy'n dadelfennu deunydd organig
An organism that decomposes organic material
Organeb sy'n byw mewn dŵr
An organism that lives in water
Pa dermin sy'n cael ei ddefnyddio i ddisgrifio organebau sy'n cael egni drwy fwyta organebau eraill?
What term is used to describe organisms that obtain energy by eating other organisms?
Cynhyrchydd
Producer
Defnyddiwr
Consumer
Dadelfennydd
Decomposer
Awtotroff
Autotroph
Define the term 'herbivore'.
An organism that eats only plants
An organism that eats only meat
An organism that eats both plants and meat
An organism that decomposes organic material
What term is used to describe a step in a biomass pyramid?
Energy level
Trophic level
Food chain
Ecological niche
Name two types of decomposers.
Bacteria and fungi
Plants and animals
Fish and birds
Insects and reptiles
What does the term 'decomposers' mean?
Organisms that produce their own food
Organisms that break down dead material
Organisms that consume other organisms
Organisms that live in water
How is energy lost in a food chain?
Through heat loss during respiration and in waste materials
Through photosynthesis
Through the production of oxygen
Through the absorption of sunlight
What is formed over time when decay is prevented?
Fossil fuels like coal, oil, and gas
Renewable energy sources
Freshwater reserves
Mineral deposits
What process do microbes use to release carbon dioxide?
Photosynthesis
Respiration
Fermentation
Digestion
Define the term 'indicator species'.
Species that show pollution in their environment
Species that are extinct
Species that are invasive
Species that are domesticated
Besides indicator species, name other signs of water pollution.
Change in pH or oxygen concentration
Increase in temperature
Decrease in sunlight
Increase in salinity
What is the term used to describe the process where chemicals accumulate in animal bodies, potentially reaching toxic levels through the food chain?
Biodegradation
Photosynthesis
Bioconcentration
Bioremediation
What is a primary advantage of using manure in intensive farming?
Decrease in crop yield
Increase in crop yield
Reduction in soil erosion
Decrease in water usage
What problem is associated with the overuse of antibiotics on farm animals?
Animals grow faster
Bacteria can develop resistance
Animals become more fertile
Bacteria become less effective
What effect can detergents have on water plants?
Decrease in plant growth
Increase in water temperature
Increase in plant/algae growth
Decrease in water clarity
Explain the negative effect of an increase in bacteria present in rivers and lakes.
Increase in oxygen levels
Decrease in oxygen levels
Increase in fish population
Decrease in water temperature
