describes a solution whose solute concentration is higher than the solute concentration inside a cell
having a solute concentration equal to that of another solution
when comparing two solutions, the solution with the lesser concentration of solutes
the act of dispersing or diffusing something
diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal
a thin membrane around the cytoplasm of a cell
a rigid layer of nonliving material that surrounds the cells of plants and some other organisms
a part of the cell containing DNA and RNA and responsible for growth and reproduction
The region of the cell between the cell membrane and the nucleus
site of protein synthesis
organelle that modifies, packages, and transports material out of the cell.
a system of membranes that is found in a cell's cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids
Powerhouse of the cell, organelle that is the site of ATP (energy) production.
a microscopic network of actin filaments and microtubules in the cytoplasm of many living cells that gives the cell shape and coherence
cell organelle that stores materials such as water, salts, proteins, and carbohydrates
a structure in the cells of plants and some other organisms that captures energy from sunlight and uses it to produce food
A membranous sac in a mature plant cell with diverse roles in reproduction, growth, and development.
2 Types of Evolution
Macro and Micro
4 Mechanisms in Evolution:
4) Natural Selection
The Scientific Method
1)make and observation (identify problem of interest) 2)develop a question based on observation (? should be relevant and testable) 3)investigator suggests an answer to question - this is the hypothesis. good hypothesis is testable by designing an experiment that involves data collection, organization, and analysis 4)following analysis, a conclusion may be drawn. compare conclusion with hypothesis and either reject or tentatively accept the hypothesis
practice of classifying plants and animals according to their presumed natural relationships
Organization of "scientific names"
group of similar organisms that can breed and produce fertile offspring