Gcse Biology B3 Ocr

anatomy – Study of the structure of an organism.
Heterozygous – Having two different alleles of a gene, this results from the fact that the paternal allele is different from the maternal one, e.g: Aa.
A hypotonic solution would cause this to occur in an animal cell. – shrinking
d) sugar-phosphate molecules –
pharyngeal slits – Slits used for filter feeding in primitive chordates and have been adapted for other functions in more highly evolved chordates; a common feature of all chordates.
Enzyme – Protein produced by living cells that acts as a biological catalyst.
Studies of graft rejection using cells labeled with fluorescent markers demonstrate that:
larva – The wormlike stage of an insect undergoing metamorphosis. Its primary purpose is to feed.
A cross conducted between 2 pea plants that are homozygous recessive for a particular trait. What percentage of offspring from the cross would you expect to express the recessive phenotype? – 100%
autosomes – Any chromosome that is not a sex chromosome
What is systemic circulation? – After gas exchange in the lungs, left atrium fills up the left ventricle.
The left ventricle pushes the rich blood out to the rest of the body
Studies оf grаft rejectiоn using cells lаbeled with fluоrescent mаrkers demonstrate that:
ethyl alcohol – product of anaerobic respiration in yeast
Somatic nervous system: – controls voluntary muscle movement
diffusion – Particles move from high concentration to low
cells have __ that regulates what enters and leaves a cell and also provides protection and support – cell membrane

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