Scientific Methods
This is a suggested explanation for a natural phenomenon that can be tested using observations and data.
What is a hypothesis.
What translates DNA into proteins from messenger RNA?
What is Ribosomes
Movement of solute or solvent without the use of energy but a needed chanel.
What is a dendrite?
What is an extension of the cell body that receives impulses.
What is a cell?
What is an organized container of chemical reactions in water.
This characteristic of science means that hypotheses can be supported, unsupported, or disproven by data.
What is testable.
An envelope surrounding a solution of proteins, lipids, and other biomolecules.
What is Vesicles.
What is the movement of molecules on an active transport gradient?
What is low to high. Or What is against its gradient.
What is a synapse?
What are the four classes of Biomolecules?
What is lipids, carbohydrates, proteins, and nucleic acids.
In a controlled experiment, this variable is manipulated by the experimenter.
What is the independent variable.
Organelles that break down molecules
What is Lysosomes
What is the need for exocytosis and endocytosis?
What is to help larger molecules move through a cell membrane.
The peripheral nervous system is primarily responsible for what?
Relaying information between the brain and spinal cord and the rest of the body.
What is a polymer?
This type of research is used when a scientist cannot manipulate a variable because it is not possible or not ethical.
What is observational research.
What is a Mitochondria
Explain what exocytosis is and what it does
If correct, then you receive the points.
Exocytosis is a process where a cell releases materials outside the cell. A membrane-bound vesicle carrying substances moves to the cell membrane, fuses with it, and empties its contents outside the cell.
What does the Na/K pump do?
What is it requires energy to move k+ into the cell and Na+ out of the cell.
What does enzymes do?
What is speeding up a reaction.
According to the scientific method, many well-supported hypotheses can eventually lead to this.
What is a theory.
It has its own DNA and also contains pigments that capture energy from the sun.
What is Chloroplast
Explain the process of active transport.
If correct, then you will receive the points.
Active transport is the movement of substances against their concentration gradient (from low concentration to high concentration), which requires energy (ATP). Transport proteins in the cell membrane use that energy to move molecules where the cell needs them. A common example is the sodium-potassium pump, which uses ATP to move Na⁺ out of the cell and K⁺ into the cell.
Explain to me the process of an action potential.
If correct, then you will receive the points.
An action potential begins when a stimulus causes the neuron to reach threshold. Voltage-gated Na⁺ channels open, allowing sodium to rush into the cell, causing depolarization (the inside becomes more positive). Then Na⁺ channels close and K⁺ channels open, allowing potassium to leave the cell, causing repolarization (the inside becomes negative again). The neuron briefly hyperpolarizes before returning to its resting potential and becoming ready to fire again.
Explain what a phospholipid bilayer is and what it does?
What is to keep track of what enters and exits the cell.