using energy to move against the diffusion gradient
Active transport
ribosome
site of protein formation/production
The organelle that carries out photosynthesis
Chloroplast
Negative Feedback
When one thing increases the other decreases
Allows us to see small things
The microscope
chemical excreted by a gland
hormone
nucleus
Contains DNA, control center of the cell
Cells that regulate the exchange of gasses in a leaf
Guard Cells
Positive Feedback
When one thing increases another thing increases
The lens closest to your eye
Eyepiece, ocular lens
clear fluid that fills the interior of a cell
cytoplasm
synthesis
The formation of complicated molecules from simpler molecules
Factors (3) that affect enzyme reaction rates
Shape, Temperature, pH
pathogen
Something that causes disease
regulates the amount of light through an object
Diaphragm
protien that makes a chemical reaction go faster
enzyme
cellular respiration
the breakdown of nutrients into smaller units to release the energy stores in them
Oxygen and glucose
The products of photosynthesis
antibodies
proteins that attack invading pathogens or mark them for destruction by white blood cells
The formula for total magnification
Eyepiece magnification X Objective lens magnification
organelle, cell, tissue, organ, organ system, organism
levels of organization
osmosis
the movement of water from an area of greater concentration to an area of lesser concentration
pH
AIDS
Viral disease that attacks the immune system making victims susceptible to other diseases
The reason why an object must be centered before increasing magnification
To keep the object in the field of view