Science 0.0 / 5 ? ScienceDNAYears 7-9 (KS3)AQA Created by: Michael EzeCreated on: 31-10-23 17:41 What does DNA stand for? deoxyribonucleic acid 1 of 20 What is the shape of a DNA structure? Double helix 2 of 20 What's an nucleotide the basic building block of nucleic acids (RNA and DNA) 3 of 20 What does RNA stand for? Ribonucleic acid 4 of 20 What is the shape of the structure of RNA? Single stranded helix 5 of 20 What's RNA? a molecule that is present in the majority of living organisms and viruses 6 of 20 Who discovered RNA? François Gros 7 of 20 Who discovered DNA? Friedrich Miescher 8 of 20 What year was RNA discovered? May 1961 9 of 20 What year was DNA discovered? Late 1860's 10 of 20 What are amino acids? molecules that combine to provide proteins 11 of 20 What is an molecule? two or more atoms connected by chemical bonds, 12 of 20 What is an atom? the smallest particle of a chemical element that can exist. 13 of 20 What is an element? any substance that cannot be decomposed into simpler substances by ordinary chemical processes 14 of 20 What is an chromosome? threadlike structures made of protein and a single molecule of DNA 15 of 20 What's the structure of a chromosome? DNA tightly coiled many times around proteins called histone 16 of 20 What are histones? a protein that provides structural support for a chromosome. 17 of 20 What's an nucleus the membrane-enclosed organelle within a cell that contains the chromosomes 18 of 20 Whats an genome? the entire set of DNA instructions found in a cell. 19 of 20 What percentage of DNA is in our body? 99.6% 20 of 20
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