biology 2

Parts of an animal cell? (5 things)

Nucleus(controll) / Cytoplasm(chemical reactions) / Cell membrane(passage) / Mitrochondria(resparation) / Ribosomes(proteinsythesis).

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Parts of plant cell not in animal? (3 things)

Cell wall(suport) / Chroroplasts(clorophly) / Vaccoule(cell sap)

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Bactria cells? (7 things)

Single cell - 1 nanometer - Cell wall / Cytoplasm / DNA strand / Plasmids / Flaglea

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Yeast cells? (5 things)

Singe cell - 3-4 nanometers - asexuall reproduction - oxogen lack=anerobic respartion=fermentation

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Specialised cells (4 things)

Fat (expand, mitochondria), Cone eye (visuall pigment,mitochodria), Root hair (surface area, vaccoule-OSMOSIS), Sperm (tail, nucleaus,acrosomes)

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Diffusion in cells

cells are specialised to have larger surface area so diffusion happens quicker.

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Tissues - humans

Muscular - contract, Glandular - enzymes & hormones

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Tissues - plants

EPITHHERMAL (protection) MESOPHYLL (chloroplasts) XYLEM & PHLOEM (transport water & minerals)

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Organs

STOMACH - muscular, glandular, epithermal. PANCREAS - homones - blood sugars & enzymes.

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Photosythesis?

carbon dioxide + water =(light energy)= glucose + oxogen

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How plants use glucose?

RELEASE ENERGY -Respiration -Convert to starch -Produce fats/oils -New cells (store in tubers and bulbs)

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Hydroponics

-Fast turnover -Profits -Unspolit -No ploughing -Poor land *costly *energy FEWER STAFF

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Factors effecting distribution of animals

Temp Nutrinets Light Water Oxogen Co2

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Enzymes in digestion

CARBOHIDTAES - carbohdrases PROTEINS - protease FATS - lipase

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Enzymes speeding up digestion

CARBOHYDRASES-breakdown starch to sugars in mouth & s intsetine PROTEASE-stomach,pancreas,small intestine-breaks down to amino acids in stomach &small intestine LIPASE-pancreas &s intestine breakdown to fattyacids & glycerol in small intestine

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Enymes in indistury

Biological detergents - P,L Baby food - P Diet food - I Sugar syrup C Industry(efficiency)

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Enzymes good & bad

-effective -economical & eviromental -medicen -efficeint *reactions *waterways *denature

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Anerobic respiration

incomplete breakdown of glucose = less enery, llactic acid=fratige, oxogen dept

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Phentotype

PHyical apperence

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Genotype

Genetic make up

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Homozygous

alles same

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Hetrozygous

alles different

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Reasons for extingtion

Preditors - Desise - Competitiors - Climate change

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Speciation?

Isolation - Genetic variation - Alles selected - Interbreeding = NEW

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Get Revising

biology 2

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