College Bio Test 1

Energy

capacity to do work

Homeostasis

constant internal environment

Hemoglobin

part of blood that carries oxygen

Super group

Taxonomic group

Invertabraes

no skeleton

Vertebrae

skeleton

Biodiversity

# of species

T/F domain bacteria/archaea contain a nucleus

False

Tracer

small amount of radioisotope in a sample

Adhesion

ability for water molecules to cling to the surface

Buffers

prevents pH changes

Cohesion

when water molecules cling to eachother

Emulsification

droplet disperses in water

T/F Saturated fatty acids have double bonds

False

T/F Unsaturated fatty acids have double bonds

True

What are Steroids?

lipids with an entirely different structure

T/F Proteins account for cell movement

True

What is Denaturation?

irreversible change in shape of protein

What are organelles?

internal compartments that have special jobs

What is endosymbiosis?

When chloroplasts do photosynthesis

What is diffusion?

balancing concentrations

What is Osmosis?

movement of water

What is Osmotic pressures job?

to control water movement in our bodies

What does Bulk transport use to move larger molecules?

Vesicles

What is Chromatin made up of?

DNA, Molecules, and Protein

What is the extracellular matrix?

proteins outside of the cell

What is plasma?

Fluid inside the blood vessels

What is the purpose of the gap junction?

To help move electrical signals quickly

T/F Catalysts speed up chemical reactions

True

What is the Cytoskeleton made of?

Protein

Whats an example of extracellular matrix?

Collagen

What are Adhesion Junctions?

Junctions that hold cells together but has a little give

Which is smaller; amino acid, or a water molecule

water molecule

What is the Ribosome made up of?

Protein

What is endocytosis?

Where they use lysome and vesicles to break down unbroken proteins.

Iso means

Same

Hypo means

lower

Hyper means

more

Tonic means

dissolved particles

What is Sooth ERs job?

Processing and creating more

What is Rough ERs job?

Sending it to the golgi as vesicles

atom

the smallest component of an element

golgi apparatus

organelle that consists of saccules and Vesiclicles

anabolism

the synthesis in living organisms of more complex substances from simpler ones together with the storage of energy

Vesicle

small membrane bound sac that stores substances within a cell

catabolism

breakdown in living organisms of more complex substances into simpler ones together with release of energy

nucleolus

a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis

nuclear pores

a minute opening or passage way through the nuclear envelope

epithelial tissue

body tissue that lines body cavities and hollow organs

peptide bond

bond used by amino acids to form proteins

nervous tissue connective

coordinates and controls body movements

enzyme

proteins that help speed up metabolism

Another name for cell membrane

Plasma membrane

glycogen

stored form of glucose

selective permeability

ability to differentiate between different types of molecules

cellulose

fibrous, and water-insoluble polysaccharide

equilibrium

state of balance

tonicity

the elastic tension of living muscles, arteries, etc

triglycerides

type of fat (lipid) found in your blood

phospholipids

two fatty acids, a glycerol unit and a phosphate group

active site

where catalytic activity takes place

Cell Theory

all biological organisms are composed of cells