Test
Excretion Quiz
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Preguntas del test (20)
1What is the correct definition of excretion?
- ARemoval of metabolic waste
- BRemoval of undigested food
- CRemoval of waste via defaecation
- DRemoval of amine groups from amino acids
- ERemoval of your head from your shoulders
2What is metabolic waste?
- AUndigested food
- BToxic compounds produced by bacteria
- CWaste substances that may be toxic or are produced in excess by cells
- DThe products of cellular reactions
- EYour life
3Why is carbon dioxide toxic? (Choose more than one answer)
- AIt is carried in the blood as hydrogencarbonate ions. These are toxic.
- BIt is carried in the blood as hydrogencarbonate ions. These dissociate to form hydrogen in red blood cells which competes with oxygen and combines with haemoglobin.
- CIt combines directly with haemoglobin and lowers its affinity for oxygen.
- DIt is carried in the blood and lowers its pH.
- EIt dissolves in the blood plasma and combines with water to give carbonic acid, which dissociates to give hydrogen ions, which lower the pH of the blood.
- FIt can enter cells and inhibit respiration.
- GIt can cause photorespiration.
4What is the process of deamination?
- Aammonia + carbon dioxide --> urea + water
- Bamino acid + oxygen --> keto acid + ammonia
- Camino acid + water --> keto acid + oxygen
- Damino acid + carbon dioxide --> urea + water
- Eamino acid + carbon dioxide --> urea + oxygen
- Famino acid + oxygen --> keto acid + water
5What is the equation for the formation of urea?
- Aammonia + carbon dioxide --> urea + water
- Bamino acid + oxygen --> keto acid + ammonia
- Camino acid + carbon dioxide --> urea + water
- Dketo acid + carbon dioxide --> urea + ammonia
- Eammonia + oxygen --> urea + carbon dioxide
6Which of these are functions of the liver? (Choose more than one answer)
- AControl of blood amino acid and carbon dioxide levels
- BControl of blood amino acid and lipid levels
- CControl of blood lipid and carbon dioxide levels
- DSynthesis of bile, plasma proteins and glucagon
- ESynthesis of bile, plasma proteins and cholesterol
- FSynthesis of bile, insulin and cholesterol
- GStorage of vitamins A, B and D, iron and glycogen
- HStorage of vitamins A, B and D, iron and bile
- IStorage of vitamins A, B and D, bile and glycogen
7What are Kupffer cells?
- ALiver cells involved in metabolic processes such as protein synthesis, detoxification, etc
- BSpecialised macrophages involved in the breakdown and recycling of red blood cells
- CSpecialised phagocytes that engulf and ingest red blood cells
- DSpecialised phagocytes involved in the immune system
- EMagic
8What is used and produced in the ornithine cycle?
- AUsed: 2 molecules of ammonia, 1 molecule carbon dioxide, 1 molecule water
Produced: 2 molecules water, urea - BUsed: 2 molecules of ammonia, 2 molecules carbon dioxide, 1 molecule water
Produced: 1 molecule water, urea - CUsed: 2 molecules of ammonia, 1 molecule water
Produced: 1 molecule water, urea - DUsed: 1 molecule ammonia, 2 molecules carbon dioxide, 1 molecule water
Produced: 2 molecules water, urea - EUsed: 2 molecules of ammonia, 1 molecule oxygen, 1 molecule water
Produced: 2 molecules water, urea
- AUsed: 2 molecules of ammonia, 1 molecule carbon dioxide, 1 molecule water
9What is the process of detoxification of alcohol?
- AEthanol --> Ethanal --> Ethanoic Acid --> Acetyl Coenzyme A
- BEthanol --> Ethanoic Acid --> Ethanal --> Acetyl Coenzyme A
- CEthanol --> Ethanoic Acid --> Lactate --> Acetyl Coenzyme A
- DEthanol --> Lactate --> Ethanoic Acid --> Acetyl Coenzyme A
- EEthanol --> Ethanal --> Acetate --> Acetyl Coenzyme A
10What is NAD used for in the liver?
- ADetoxification of alcohol and breakdown of fatty acids
- BSynthesis of bile and breakdown of fatty acids
- CDetoxification of alcohol and synthesis of bile
- DDetoxification of alcohol and control of amino acid levels
- EControl of amino acid levels and synthesis of bile
11Which parts of the kidney are in the medulla?
- ALoop of Henle and collecting duct
- BLoop of Henle, collecting duct and DCT
- CLoop of Henle, collecting duct, DCT and PCT
- DGlomerulus, Bowman's capsule, PCT and DCT
- EGlomerulus, Bowman's capsule, PCT, DCT and collecting duct
- FGlomerulus, Bowman's capsule and PCT
12What is filtered out of the blood during ultrafiltration? (Choose more than one answer)
- Awater
- Bplasma proteins
- Camino acids
- Dglucose
- Eurea
- Finorganic ions
- Gred blood cells
- Hwhite blood cells
- Iplatelets
- Jplasma
13Which of the following are adaptations that aid ultrafiltration?
- Apores in the endothelium of capillaries
- Bpores in the membrane of the Bowman's capsule
- Ca basement membrane made out of a matrix of collagen fibres to filter out large particles
- Dpodocytes in the Bowman's capsule being arranged in finger like projections to allow molecules to pass
- Ethe afferent arteriole narrowing into the glomerulus to increase hydrostatic pressure
- Fthe efferent arteriole wraps around the PCT so any products left in the blood can diffuse into the PCT
14How is the PCT specialised to be adapted to selective readsorption? (Choose more than one answer)
- Athe cell surface membrane is folded into microvilli to increase the surface area available for reabsorption
- Bthe cell surface membrane contains co-transporter proteins for facilitated diffusion
- Cthe cell surface membrane contains sodium-potassium ion pumps
- Dthe cell cytoplasm has many mitochondria to provide ATP for facilitated diffusion
15What is the arrangement for water reabsorption in the Loop of Henle called?
- Aa hairpin countercurrent multiplier
- Ba paperclip countercurrent system
- Ca hairpin opposing current
- Da countercurrent osmotic flow
- Ea transmuting permeability countercurrent flow
16Where are osmoreceptor cells found?
- Athe hypothalamus
- Bthe posterior pituitary gland
- Cthe anterior pituitary gland
- Dthe medulla oblongata
- Ethe amygdala
17Where is ADH secreted from?
- Athe hypothalamus
- Bthe posterior pituitary gland
- Cthe anterior pituitary gland
- Dthe medulla oblongata
- Ethe adrenal gland
18What is haemodialysis?
- AThe peritoneum (abdominal membrane) acts as a filter. The dialysate is poured into the body through a tube, and needs to be changed every few hours.
- BBlood is taken from a vein and passed through a dialysis machine so that exchange of substances can occur across a partially permeable membrane.
- CBlood is removed from the body and replaced with blood from healthy donors.
- DA new kidney is implanted into the lower abdomen and attached to the blood supply and bladder.
19What is the name of the hormone secreted by the placenta that is used in pregnancy testing?
- AHuman chorionic gonadotrophin (hCG)
- BFoetal cholinergic gonadotrophin (fCG)
- CHuman cholinergic gonadotrophin (hCG)
- DHaemo chorionic gonatroponin (hCG)
- EFoetal chorionic gonatroponin (fCG)
20What are the pores in the wall of the DCT and collecting duct called?
- AAquaporins
- BOsmotic pores
- CLuminal pores
- DPodocytes
- EOsmoporins
Información
- Descripción
- A Levels Biology Test sobre Excretion Quiz, creado por otaku96 el 24/05/2015.
- Autor
- otaku96
- Idioma
- English
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