module 1
what is homestasis?
define matter
anything that has mass and takes up space (has volume)
what trophic level is a bee
primary
define active transport
movement of molecules through the plasma membrane without the need for energy input
what is an organelle
a cell that has no nucleus or other distinct, membrane-bound organelles
where does a smart person put their faith: science or the bible?
the bible
how many electrons are in a atom that has 32 protons
32
the range or area occupied by a population is its
carrying capacity
if a cell dies of implosion what kind of solution is it (isotonic, hypertonic, hypotonic)
hypotonic
what is exocytosis
the process by moving particles out of the cell by means of vesicle membranes fusing with cell membrane
why do scientists have procedures and protocols in the lab
to ensure saftey and well being of creatures being studied
what does the ph scale measure
acidity
natural disturbances can result in
succession
what organelle is responsible for breaking polysaccharides into monosaccharides
lysosomes
what is the plasma membrane made of
50 percent lipid, 5 percent protein by weight
why do scientists use the metric system
because it is the most commonly used system
what are the basic building blocks of proteins, lipids, and polysaccharides
amino acids
name 1 way oxygen is removed from the air
rusting of metals and minerals, ozone, fire
what is the golgi apparatus
the organelles where proteins and lipids are stored and then modified to suit the needs of the cell
what helps a cell hold its shape if it does not have a cell wall
cytoskeleton and endoplasmic reticulum
what are the criteria for life?
able to grow and develop, composed of cells, have metabolism and energy, homeostasis, sense and respond to stimuli, and DNA and reproduction
how does DNA store information?
in a sequence of 4 nucleotides
name 1 way oxygen is replenished in the air
ozone, water vapor destruction, oxygen destruction
what are the 3 main ideas of the cell theory
1. all living organisms are composed of cells and may be unicellular or multicellular
2. the cell is the basic unit of structure and function in living organisms
3. cells arise from existing cells
how does the cell of a single celled organism differ from a cell in a multi cellular organism
single cells must perform all the life functions, while kulti can be dependent on others