easy
What is a cell?
It is the smallest unit that can live on its own and that makes up all living organisms and the tissues of the body.
What is cell theory?
All living things are made of cells, new cells could only be produced from existing cells, and cells are the basic unit of life.
What is exocytosis?
The process of excreting material out of the cell.
What is Osmosis and Diffusion?
1. Osmosis is the net movement of water across a semipermeable membrane.
2. Diffusion is the net movement of anything generally from a region of higher concentration to a region of lower concentration.
Who is the father of biology?
Aristotle
What is a hypothesis?
A proposed scientific explanation for a set of observations.
What charge does protons, electrons, and neutrons hold?
1. Positive
2. Negative
3. No charge
What does an electron microscope do?
It uses a beam of electrons to magnify the objects image.
What is molecular transport?
The process whereby a substance is transferred across the cell membrane in such a manner that it is specifically controlled.
What is the most powerful type of microscope?
Transmission microscope
What is an element?
A pure substance that consists entirely of one type of atom.
What is the pH scale?
It is a scale used to indicate the concentration of H+ ions in a solution.
What are the eight characteristics of living things?
Living things are based on a genetic code
Living things are made up of cells
Living things maintain a stable internal environment
Taken as a group, living things evolve
Living things grow and develop
Living things reproduce
Living things respond to their environment
Living things obtain and use material and energy
What is osmotic pressure?
The minimum pressure which needs to be applied to a solution to prevent the inward flow of its pure solvent across a semipermeable membrane.
What is quantum biology?
The field of study that investigates processes in living organisms that cannot be accurately described by the classical laws of physics.
What element does all living things possess?
Carbon
What are the six essential elements?
Carbon, hydrogen, nitrogen, oxygen, sulphur and phosphorus.
What is endocytosis?
The process of taking material into the cell.
What is Isotonic, Hypertonic, and Hypotonic solutions?
1. Solutions that contain the same concentration of water
2. A solution with higher osmotic pressure than another solution.
3. A solution that has lower osmotic pressure than another solution to which it is compared.
Who discovered the electron?
Joseph John Thomson
What is Biology?
Biology is the study of living things in the natural world.
What is the difference between Prokaryotes and Eukaryotes?
One has a nucleus, and the other doesn't.
What are the differences between Ionic bonds and Covalent bonds?
An ionic bond is formed when one or more electrons are transferred from one atom to another, while an covalent bond forms when electrons are shared between atoms.
What are the levels of organization.
Individual cells, tissues, organs, and organ systems.
Who discovered carbon?
Independently by Daniel Rutherford and by C.W. Scheele and H. Cavendish in 1772.