BIOLOGY OCR A2 F215 MODULE 1 - CELLULAR CONTROL Oh my days. too many questions. 4.5 / 5 based on 3 ratings ? BiologyCellular processes and structureA2/A-levelAll boards Created by: Melissa JacksonCreated on: 14-06-12 16:56 The genetic code is a degenerate code, this means that: Various triplets code for one amino acid. 1 of 37 The first stage of protein synthesis is called: Transcription 2 of 37 The first process of said stage is: The DNA unwinds and unzips. 3 of 37 Stage 2: Free floating nucleotides bond to the exposed base pairs. 4 of 37 Stage 3: Two ATP molecules release their energy to aid the process. 5 of 37 Stage 4: mRNA is produced, which is complementary to the coding strand. 6 of 37 Stage 5, the final stage: mRNA passes out of the nucleus and heads towards a ribosome. 7 of 37 The second stage of protein synthesis is known as: Translation 8 of 37 The first stage of said process is: RNA enters the Ribosome 9 of 37 Second stage: The Ribosome hovers over 6 bases of the mRNA, a tRNA molecule joins onto the first 3, bringing the amino acid. 10 of 37 Third stage: Another molecule of tRNA bonds to the next three bases, carrying another amino acid. 11 of 37 Fourth stage: The ribosome bonds the two acids, and moves along the chain. The first molecule of tRNA detaches. 12 of 37 Fifth stage: The process continues. 13 of 37 BIG RED MEN is the original code, BIG RED HEN is an example of: A point mutation 14 of 37 BIG RRE DME N is an example of: An insertion 15 of 37 BIG BIG BIG RDM EN is an example of which two? Insertion and deletion. 16 of 37 Select the illness which is not caused by mutation: Astigmatism 17 of 37 An _____ is an alternate version of the same gene. Allele 18 of 37 A silent mutation is when: A mutation causes no change because it still codes for the same acid. 19 of 37 The lac operon is found in: e Coli 20 of 37 The lac operon controls: The production of lactase and respiration of lactose. 21 of 37 The sections of the lac operon are named: I-P-O-Z-Y 22 of 37 Homeobox genes are arranged in ___ clusters. Hox 23 of 37 What does excess vitamin A do in pregnant women? Causes birth defects in the baby, interferes with homeobox genes. 24 of 37 Billy Mays has a fantastic new product, how much is this product? $19.95 25 of 37 Meiosis creates four gametes which are haploid 26 of 37 Meiosis does not produce genetic variation by: Cutting each cell in half at prophase 2. 27 of 37 Genotype means: The visible characteristic of an organism. 28 of 37 Recessive epistatis gives the ratio: 9:3:4 29 of 37 Dominant gives: 13:3 30 of 37 Complementary fashion gives: 9:7 31 of 37 An example of discontinuous variation is: Blood Group 32 of 37 An example of continuous variation is Weight/Mass 33 of 37 The big Hardy Weinberg principle measures Allele frequency. 34 of 37 An example of a selection pressure is: Food source 35 of 37 The snow melts away and reveals a muddy forest floor, the rabbit colour favoured is now brown. This is: A directional selection. 36 of 37 What factor does not prevent populations from interbreeding. Disease 37 of 37
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