Biology

Electrical charge Rejected without help of a transport protein Channels Form a pore in membrane (simple diffusion). Carriers Bind a molecule and transport it across membrane. (facilitated diffusion) Passive transport No energy required molecules move down their concentration gradient. (Small molecules) Active transport Require energy to pump molecules across the membrane against their concentration gradients. (Big molecules) Bulk transport Movement of large volumes of material.

Biology - ANSWER-The study of life and living things cell membrane - ANSWER-the structure that separates the inside of the cell from the outside of the cell Cells - ANSWER-the basic units that make up all living organisms Chloroplast - ANSWER-the organelle in plant cells that capture energy from sunlight to build organic molecules Chromosomes - ANSWER-DNA containing structures in prokaryotic and eukaryotic cells Cytoplasm - ANSWER-the part of the cell that is outside the nucleus ...

control variable - ANSWER-In an experiment of or set of compared observations, a variable that does not differ between control and test groups. controlled experiment - ANSWER-Test group compared to a control, or unaltered, group. data - ANSWER-Recordable observations or measurements. deductive reasoning - ANSWER-Using general principles to infer answers to specific questions. dependent variable - ANSWER-Measured results of an experiment; result of the effects of the independent varia...

Shorter revision notes covering diseases (communicable and non-communicable), how they are spread, and how to limit the spread of disease. These revision notes are great for if you want to quickly look over this topic as exam preparation. Colourful and neatly laid out to ensure for easy revision. I found these useful when I wanted to quickly refresh my memory on the topic. It is great for all exam boards and Biology and Combined Science. I used these for my revision and got a Grade 9 on my Biolo...

What must be true about a scientific hypothesis? - ANSWER-Hypotheses must be falsifiable. What is important for the formation of scientific hypothesis? - ANSWER-Creativity and cooperation. What correctly describes a theory? - ANSWER-A group of well tested hypotheses that provide evidence to support explanations for scientific phenomena. Statement that accurately describes the purpose of the scientific method? - ANSWER-To provide a systematic way for obtaining evidence to support or refu...

Biology - ANSWER-The study of living and non-living organisms. Life Science - ANSWER-The study of plants and animals. Botany - ANSWER-The study of plants. Zoology - ANSWER-The study of animals Chemistry - ANSWER-the study of chemicals Physics - ANSWER-The study of energy and matter. Geology - ANSWER-The study of rocks Biosphere - ANSWER-Al living and non-living organisms that make up the biological component of the Earth. Lithosphere - ANSWER-The solid components of the E...

In-depth revision notes of the Health and Disease topic including notes about cancer, communicable and non-communicable diseases, vaccinations, antibiotics, and the Human Defence System. Examples and explanations are provided for different diseases including measles and salmonella. These notes are perfect for all exam boards - Biology and Combined Science. The notes are colourful and bullet-pointed to make revision easier. I used these notes to revise and got a Grade 9 in my Biology exam!

Physiology integration of anatomy, biology, chemistry and physics Equation 1 ATP <-> ADP + Pi + energy Equation 2 Glucose + O2 + ADP + Pi <-> ATP + CO2 + H2O + heat Equation 3 CO2 + H2O <-> HCO3- + H+ creates a PH issue Equation 4 PV = nRT pressure, volume, n = amount of substance, R = gas constant and T = temperature Homeostasis Relatively stable maintenance of a body parameter -> dynamic constancy Homeostatic control system purpose is to keep parameter at set point

Chemistry - ANSWER-the branch of physical science that studies matter and its changes Physics - ANSWER-a branch of physical science that studies forces and energy Geology - ANSWER-a branch of Earth science that studies the physical nature and history of Earth Meteorology - ANSWER-a branch of Earth science that studies the atmosphere and the weather Ecology - ANSWER-a branch of biology that studies the balance in nature Life, Physical, and Earth Sciences - ANSWER-the main branches ...

How does biology unify much of natural science? - ANSWER-Biology unifies much of natural science by incorporating elements of natural sciences. Energy exchanges associated with physics are used in every level of exchange between living organisms. Chemical elements from chemistry make up the structure of living things. Biology builds on already known information by exploring the wonders of life. What are the seven characteristics of life? - ANSWER-1) Cellular organization 2) Ordered complexit...