Biology

Biodiversity OCR A Level biology exam style Questions and answers A+ guaranteed pass 2024/2025

A level Biology OCR A Key words - Biodiversity, evolution and ecosystems questions and answers A+ guaranteed pass 2024/2025

Biology OCR A Level Chapter 11 - Biodiversity questions and answers A+ guaranteed pass 2024/2025

OCR A LEVEL BIOLOGY BIODIVERSITY questions and answers A+ guaranteed pass 2024/2025

The document contains the information of plant pollination, their types, fertilization and their importance. Also describe about the agents involved in pollination.

In these notes you will find all the imp points and there are some extra points also , hints to learn hierarchies and underlined key points .

Human health and disease / class notes / important points

1. A well-tested explanation that explains a lot of observations is Select one: a. an inference. b. a hypothesis. c. a controlled experiment. d. a theory. - AnsD. 2. A paleontologist would likely be most interested in finding Select one: a. genetic codes to rewrite. b. weather patterns that affect life on Earth. c. a universal Tree of Life. d. weapons for an evolutionary arms race with disease-causing organisms. - AnsC. 3. Information gathered from observing a plant grow 3 cm over a...

Scientific method - Ansproblem/question, hypothesis, experiment, data and results, conclusions Quantitative observations - Ansmeasurable, countable Qualitative observations - Ansdescriptive, but not measurable Inferences - Ansconclusions or deductions based on observations Characters of life: - Ansmade up of 1 or more cells, movement, reproduction, use energy, growth and development, response to stimuli Robert Hooke - Ansexamined cork with three lens compound microscope Anton van Leeuwen...

pH scale above 7 - AnsBase pH scale below 7 - AnsAcid pH scale at 7 - AnsNeutral how do you test pH - AnsPhenol Red, or pH paper, or pH meters When using Biuret Reagent what do you test for? What color does it change if it has this? - Anstest for the presence of proteins. Its initially blue and when added to a solution containing protein it turns purple or violet. When using benedicts reagent what do you test for? What color does it change if it has this? - Ansused to test for the prese...