GCSE Biology (AQA) Exam Questions and Answers 100% Verified and Updated | Graded A+

GCSE Biology (AQA) Exam Questions and Answers 100% Verified and Updated | Graded A+ microscope - Answer️️ -an optical instrument used for viewing very small objects, such as mineral samples or animal or plant cells, typically magnified several hundred times. fine focus - Answer️️ -Knob that allows you to make fine focusing adjustments. (small knob) objective - Answer️️ -the lens at the bottom near the sample eyepiece - Answer️️ -A lens that magnifies the image formed by the objective. course focus - Answer️️ -used to make big changes in focus (large knob) magnification - Answer️️ -= size of the image/size of real object resolving power - Answer️️ -A measure of the clarity of an image; the ability of an optical instrument to show two objects as separate. cell - Answer️️ -the basic structural and functional unit of all organisms algae - Answer️️ -Grow in soil, on trees and on the bodies of turtles and frogs; smallest of all green plants cytoplasm - Answer️️ -A jellylike fluid inside the cell in which the organelles are suspended, where many chemical reactions take place. cell membrane - Answer️️ -A cell structure that controls which substances can enter or leave the cell. mitochondria - Answer️️ -An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. ribosome - Answer️️ -Cytoplasmic organelles at which proteins are synthesised. cell wall - Answer️️ -A rigid layer of nonliving material that surrounds the cells of plants and some other organisms. cellulose - Answer️️ -A substance (made of sugars) that is common in the cell walls of many organisms chloroplast - Answer️️ -An organelle found in plant and algae cells where photosynthesis occurs chlorophyll - Answer️️ -A green pigment found in the chloroplasts of plants, algae, and some bacteria vacuole - Answer️️ -Cell organelle that stores materials such as water, salts, proteins, and carbohydrates cytoskeleton - Answer️️ -(A-Level) A network of fibers that holds the cell together, helps the cell to keep its shape, and aids in movement Golgi apparatus - Answer️️ -(A-Level) An organelle found in eukaryotic cells responsible for the final stages of processing proteins for release by the cell. rough endoplasmic reticulum - Answer️️ -(A-Level) System of internal membranes within the cytoplasm. Membranes are rough due to the presence of ribosomes. Functions in transport of substances such as proteins within the cytoplasm smooth endoplasmic reticulum - Answer️️ -(A-Level) part of the endoplasmic reticulum that contains enzymes used for all sorts of processes photosynthesis - Answer️️ -Conversion of light energy from the sun into chemical energy. 6CO2 + 6H2O + light --> C6H12O6 + 6O2 glucose - Answer️️ -A simple sugar that is an important source of energy. eukaryotes - Answer️️ -Organisms whose cells contain a membrane-bound nucleus and other organelles prokaryotes - Answer️️ -Cells that have no internal membranes or internal organelles, like nuclei or mitochondria. bacteria - Answer️️ -Constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, they have a number of shapes, rangin