OCR A2 Biology (F215) 3.0 / 5 based on 1 rating ? BiologyA2/A-levelOCR Created by: gugCreated on: 27-05-13 19:08 What is a gene? A length of DNA that codes for one or more polypeptides 1 of 29 What is the first stage of protein synthesis? Transcription 2 of 29 What enzyme unwinds and unzips the DNA double strand? DNA Helicase 3 of 29 What part of the Ribosome does the mRNA codons bind to? Small subunit 4 of 29 What is the chemical that activates some proteins? cAMP 5 of 29 Vitamin D deficiency leads to............. Rickets 6 of 29 What part of the Operon does RNA Polymerase bind to? Promoter region 7 of 29 What is the 2nd stage in Apoptosis? Cytoplasm becomes dense and organelles tightly pack together 8 of 29 What is the genotype? Alleles present within an organism's cell, for particular traits 9 of 29 Discontinuous variation has.......... distinctive categories 10 of 29 One desirable phenotypic feature of dairy cows is............. large udders 11 of 29 What is an Explant? Small piece of tissue taken from plant to be cloned 12 of 29 What type of microorganism(s) produces Penicillin? Fungus 13 of 29 ............cuts cuts DNA into smaller fragments Restriction enzyme 14 of 29 What technique separates the fragments? Electrophoresis 15 of 29 Insulin is produced in ............. E.Coli bacteria 16 of 29 A ................. is a place where an organism lives habitat 17 of 29 Gross primary productivity is.......... rate at which plants convert light energy into chemical energy 18 of 29 The process of fixing nitrogen gas into nitrates Nitrogen fixation 19 of 29 A type of nitrogen fixing bacteria Rhizobium 20 of 29 ....specific competition happens within a species Intra 21 of 29 What is the type of tropism where a plant grows toward a light stimulus Phototropism 22 of 29 .............promote seed germination Gibberellins 23 of 29 What part of the brain is responsible for conscious thought? Cerebrum 24 of 29 What is split into somatic and autonomic neurones? Motor neurones 25 of 29 What is the transmitter substance released in the sympathetic nervous system? Noradrenaline 26 of 29 The muscle fibre membrane is known as the........... Sarcolemma 27 of 29 What type of muscle is spindle shaped? Involuntary 28 of 29 What is released from the Hypothalamus into the Pituitary gland, during the fight or flight response? Corticotropin releasing factor 29 of 29
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