A Level Biology

GRADE 10 BIOLOGY 3 structure parts of DNA - ans- Phosphate group - Deoxyribose sugar - Nitrogenous base (A, T, G, C) 4 nitrogen bases that all organisms have - ansAdenine (A) - Thymine (T) - Guanine (G) - Cytosine (C) (A connects with T with 2 hydrogen bonds - G connects with C with 3 hydrogen bonds) Benefits of Human Cloning - ans- Replace dead family members - Infertile or homosexual couples who don't want to use donors - Individuals with rare genetic disorders can be stud...

Biology Unit 3 2025 aerobic - ansusing oxygen; when applied to organisms, cells, or tissues, it means they use oxygen as part of the process of obtaining energy from glucose anaerobic - ansnot using oxygen; when applied to organisms, cells, or tissues, it means they do not use oxygen as part of the process of obtaining energy from glucose aqueous - answatery Archaea - ansone of the three domains of life, made up of prokaryotic organisms, most of which live under extreme conditions of t...

Biology Review Alleles - ansdifferent forms of a gene Biodiversity - ansResults in stability in an ecosystem. Biodiversity is a measure of the number and types of organisms that live in an ecosystem Cell Wall - ansstrong layer around the cell membrane in plants, algae, and some bacteria Chargaff's Rule - ansequal amounts of adenine bonds with thymine and equal amount of guanine bonds with cytosine Chromosomes - ansthreadlike structures made of DNA molecules that contain the genes...

Biology Quiz 2025 10% rule -ansonly 10% of the total energy produced at each trophic level is available to the next level. The amount of energy passed up to the levels of the food pyramid reduces as you go up. 1st law of Thermodynamics -ansthe law that states that energy cannot be created nor destroyed 2nd law of Thermodynamics -answhenever energy is converted from one form to another form some energy is lost as heat Abiotic -ansnon-living Activation Energy -ansthe energy that an at...

Biology Exam Study Guide 2025 Guarateed A+ Active Transport - ansthe movement of materials through a cell membrane using energy Aerobic - ansChemical reactions that require the presence of oxygen. More ATP Amino Acids - ansSimple forms of protein normally used to build tissues or, under some conditions, burned for energy Anaerobic - ansprocess that does not require oxygen. Makes less ATP Atomic Mass - anstotal mass of the protons and neutrons in an atom, m...

Biology EOC Review activation energy - ansenergy needed to start a chemical reaction; lowered by enzymes active transport - ansmovement of molecules across a membrane requiring energy to be expended by the cell adaptation - ansinherited characteristic that increases an organism's chance of survival allele - ansthe different forms of a gene; could be dominant or recessive amino acid - ansbasic building blocks of proteins analogous structures - ansstructures that do not have a c...

Biology - Test Questions A molecule with a partial positive charge on one side and a partial negative charge on the other is called a(n)... - anspolar molecule Acid solutions have a pH that is where on the pH scale? - ansbelow 7 Amino acids are monomers of... - ansproteins Animals store glucose-containing fragments in the form of... - ansGlycogen Basically, the biological term for "keeping things the same". - anshomeostasis Because certain chemical characteristics do not al...

Biology - Genetics adenine - ansA base thats found in DNA. It will only bond with Thymine. allele - ansForm of a gene. Each characteristic has two alleles. amino acid - ansBuilding blocks of protein asexual reproduction - ansReproduction of identical offspring from a single parent. No gametes involved autosomes - ansAny chromosome other than the sex chromosomes. base - ansOne of four chemicals which make up the 'rungs' of DNA; A;T;C;G base-pair - ansTwo bases making each...

Biology Vocabulary List 2025 Abiogenesis - ansa hypothetical organic phenomenon by which living organisms are created from nonliving matter Acid - ansany of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt Activation Energy - ansthe energy that an atomic system must acquire before a process (such as an emission or reaction) can occur Active Site - ansThe specific portion of an enzyme that attaches to the subst...

This is best for class 12