Study guides, Class notes & Summaries

2 © OCR 2023 Chemical Bacteria in the gut compete against pathogens Microbial Skin stops pathogens entering the body Physical Stomach acid destroys pathogens 1 Some bacteria are pathogens that cause diseases. (a) Our blood contains white blood cells. They help protect us against pathogens. (i) Write down the name of the organ that pumps the blood around our body. .............................................................................................................................

Science : A method for studying the natural world. It's also a process that uses observations and investigations to gain knowledge about events in nature. 1st step of the science method : State the problem 2nd step of the science method : Research & gather information 3rd step of the science method : Form a hypothesis 4th step of the science method : Test Hypothesis 5th step of the science method : Analyze the data (putting info. in graphs and tables) 2 | P a g e 6th step of the ...

science exam study guide % Correct!! Scientists attempt to minimize confirmation bias through ____________________. - Answer-dating to assign an age to a fossil scientists use -Answer-all of the above Because a whale's flipper and a bat's wing have similar bone structure, evolutionists refer to the body parts as ______. -Answer-homologous structure bacteria are found in which of the following places? -Answer-in all of the following questions a bacterium's DNA is located in its -Answer...

_ is the study of living things - correct answer Life science The first step to finding solutions to problems such as pollution, deforestation, and the extinction of wildlife is to - correct answer understand how we affect the world around us by making observations and asking questions. In which of the following areas of study might you find a life scientist at work? - correct answer studying how wasps could be used to control fire ant populations Many environmental problems are caus...

OCR GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) J260/08 COMBINED SCIENCE (HIGHER TIER) QUESTION PAPER AND MARK SCHEME FOR JUNE 2023 (MERGED)

OCR GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) J260/07: Physics (Higher Tier) QUESTION PAPER AND MARK SCHEME FOR JUNE 2023 (MERGED)

OCR GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) J260/06 CHEMISTRY (HIGHER TIER) QUESTION PAPER AND MARK SCHEME FOR JUNE 2023 (MERGED)

OCR GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) J260/05 BIOLOGY (HIGHER TIER) QUESTION PAPER AND MARK SCHEME FOR JUNE 2023 (MERGED)

OCR GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) J260/04 Combined Science (Foundation Tier) QUESTION PAPER AND MARK SCHEME FOR JUNE 2023 (MERGED)

OCR GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) J260/03 PHYSICS (FOUNDATION TIER) QUESTION PAPER AND MARK SCHEME FOR JUNE 2023 (MERGED)