Aqa A Level Biology Paper 1 Study Guide Questions And Correct Answers

1. Modifies triglycerides 2. Combines triglycerides with proteins 3. Packaged for release to undergo exocytosis {Ans: Suggest how the Golgi apparatus is involved in the absorption of lipids. (3)}1. The base sequence of DNA 2. The base sequence of mRNA 3. The amino acid sequence of proteins ​ {Ans: State three comparisons of genetic diversity that the scientists used in order to generate classification Y. (3)}1. Proteins remain in the plasma 2. This reduces the water potential 3. Water moves to blood by osmosis 4. Returns to blood via lymphatic system {Ans: Tissue Fluid is formed from blood at the arteriolar end of a capillary bed. Explain how water from tissue fluid is returned to the circulatory system. (4)}1. If a ring of bark (only phloem removed) is removed for a tree, a bulge forms above the ring. 2. A radioactive tracer can trace 14C 3. Pressure in the phloem can be investigated using aphids. 4. Metabolic inhibitor is out into the phloem, then translocation stops. Evidence that ATP is involved. {Ans: Evidence for mass flow. (4)}1. Set up grid system with coordinates 2. Place large number of quadrats at coordinates selected at random 3. Count