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  • Created by: claudia98
  • Created on: 30-10-13 11:23
anearobic respiration
glucose-> ethanol +carbon dioxide, or lactic acid
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diffusion
net movement of particles down a concentration gradient
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active transport
movement of particles against a concentration gradient, using energy from respiration
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mitosis
chromosomes doubled, then split into 2(pulled to different poles)
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meiosis
splits twice, only sex cells, with 23 chromosomes each, not genetically identical
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diffusion rate affectors
temperature, gradient steepness, surface area to volume ratio
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emphysema
alveoli surface area reduced
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bronchitis
cilia dont work
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amalase(carbohydrase)
starch to maltose
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maltase(carbohydrase)
maltose to glucose
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pepsin(protease)
proteins to peptides
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lipase
lipids to fatty acids and glycerol
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eye from front
conjunctiva,cornea,iris.(retina inside back, sclera outside back)
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rod cells
dim but not colours
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cone cells
colours in bright light
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why are image sharp if focused on the fovea
cones are concentrated there, they produce sharper images
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motor neurone
dendrons come off cell body
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sensory neurone
cell body outside, long dendron
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FSH(follicle stimulating hormone)
stimulates egg development,and oestrogen secretion
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LH(luteinising hormone)
egg release
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ADH
controls blood water content
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insulin
lowers blood glucose
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glucagon
raises blood glucose
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nervous vs endocrine systems
electrical impulse(with chemical at synapse vs hormones in bloodstream, fast vs longer, shortlived response usually vs longer lasting, localised effect vs can affect many organs
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homeostasis
keeping internal body conditions relatively constant
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how does ADH work?
when too little water in blood, detected by hypothalamus, and ADH secreted from pituitary gland. casues collecting ducts to become more permeable to water, reducing water loss.
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oestogen
stops FSH production, stimulates pituitary gland to release LH
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progesterone
secreted by ovaries. maintains uterus lining. if egg fertilized, the corpus luteum continues to make progesterone, and then it is secreted by the placenta. if not then the corpus luteum breaks down, and the lining of the uterus is shed.
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nitrate
making amino acids, chlorophyll, DNA and protein. lack=stunted growth, older leaves yellow
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phosphate
DNA, part of cell membrane. lack=poor root growth, younger leaves purple
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potassium
for enzymes of respiration and photosynthesis to work. lack=yellow leaves with dead spots
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magnesium
part of chlorophyl. lack=leaves turn yellow
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Other cards in this set

Card 2

Front

net movement of particles down a concentration gradient

Back

diffusion

Card 3

Front

movement of particles against a concentration gradient, using energy from respiration

Back

Preview of the back of card 3

Card 4

Front

chromosomes doubled, then split into 2(pulled to different poles)

Back

Preview of the back of card 4

Card 5

Front

splits twice, only sex cells, with 23 chromosomes each, not genetically identical

Back

Preview of the back of card 5
View more cards

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