Bio 101 Tina Hopper Exam 1

Qualitative Observation

What you know about a situation from just using your senses

Cohesion

Tendency of molecules to stick together

Does Frozen water float?

**** yeah it floats, its mf water it does what it wants

Aqueous Solution

Contains a substance Dissolved in water

Buffer Solution

Chemicals that minimize changes in ph by accepting Hydrogen Ions

Below 7 on ph scale

Acid

7 on ph scale

Neutral

Above 7 on PH scale

Base

Lipids

Fats, oils, animal fat, cholesterol

Macro Molecules

Large molecules with a complex structure

HDL cholesterol

Good guy cholesterol

LDL

Dickhead cholesterol

Triglyceride

hydrogen/carbon tails that store energy

Metabolism

Sum of total chemical reactions in an organism

Enzyme

protein that speeds up digestion

Cell membrane

controls what comes in and out of the cell

Receptor proteins

Bind to external chemicals in order to regulate processes within the cell

recognition proteins

provides a finger print for the cell

Transport proteins

provides a passageway for travel inside and outside the cell

Diffusion

molecules moving from higher concentration area to a law concentration area

Osmosis

diffusion of water

Cellular respiration

uses oxygen to harvest energy from molecules of sugar

Ribosomes

Site of protein production

Endoplasmic reticulum

Ribosomes attached, moves everything throughout the cell

Golgi

Stupid ass name, but receives stuff from the ER, stores it, and moves stuff out of the cell

CO2+energy(sunlight)+ H2O ---> O2 + Glucose

Photosynthesis

Organ System

A group of organs that work together to perform a vital body function.

Organelle

a group of atoms bonded together.

Cell

the fundamental unit of life

Molecule

a group of atoms bonded together

Atom

the fundamental unit of matter

Tissue

an integrated group of similar cells that work together to perform a specific function

Organ

consists of multiple tissues that cooperate to perform a specific task

Biosphere

consists of all life on earth and all of the environments that support life

Ecosystem

includes all the living organisms in one particular area

Community

consists of all the interacting populations of organisms occupying an ecosystem

Population

a group of interacting individuals of one species

Organism

An individual living being

Pseudoscience

Fake ass science that is falsely presented as having a scientific basis, but in reality is just dumb af

Anecdotal Evidence

an assertion based on a single or a few examples that don't support a generalized conclusion

Elements

Substances that cannot be broken down into other substances by chemical reactions

Compounds

substances with two or more elements in a fixed ratio

Photosynthesis

Ionic Bonds

Involves the transfer of one or more electrons from one atom to another

Covalent Bonds

Involves the sharing of one or more electrons

Nonpolar Bond

When electrons are shared evenly between two atoms

Polar Bond

When electrons are more strongly attracted to one of the atoms in a bond

Adhesion

the clinging of one substance to another

Monomers

Join together to form larger molecules

Monosaccharides

The building blocks of carbohydrates

Disaccharide

double sugar formed by joining two monosaccharides through a dehydration synthesis reaction

Dehydration synthesis reaction

the process by which monomers are linked together to form polymers

Polymers

Large molecules formed by monomers binding together

Phospholipid bilayer

Made by stacking two layers of a molecule called a phospholipid. Regulates the passage of materials in and out of the cell

Phospholipid

contains a phosphate group in its hydrophobic head

Anabolic Steroids

Synthetic variants of testosterone that mimic its effect

Steroids

Lipids that contain four fused chemical rings made primarily

Hydrogenation

An unsaturated fat can be rendered solid through a manufacturing process

Saturated fats

Has the maximum number of hydrogens along the fatty acid tail