Terms in this set (68)
a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation. (if... then... statement)
The group where the variable doesn't change (compare your results to)
variables that do not change in an experiment
the variable that is changed in the experiment
the variable that changes as a result to changing the independent variable (depends on the independent variable)
found in eukaryotes, outer membrane covers like skin, powerhouse cell, makes ATP
in eukaryotic cells, involved in protein production, tubes and sacs covered in ribosomes
contains a nucleus and other membrane bound organelle (plants, animals, and humans are made of this)
lack nucleus and other membrane bound organelles (bacteria is made of this)
eukaryotes (only plants), photosynthesis, sunlight absorbed converts to chemical energy
in eukaryotes, looks like a maze, sorts and transports proteins (packages)
found in all cells, phospholipid bilayer, main function is to control what goes in and out of the cell, semi-permeable (somethings can go in but not everything)
in prokaryotes and eukaryotes, in the shape of a ladybug, used to make proteins
made of cellulose (found in only plants), protects cells and allows plants to grow
found in both prokaryotes and eukaryotes, jelly-like and 80% water, allows organelles to move to the certain parts of the cell they need to (provides food)
in eukaryotes, contains DNA and genetic info, proteins, and chromosomes, coordinates the cell's activity
the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes.
movement of particles from an area of high concentration to an area of low concentration
cell membrane controls flow of water to maintain homeostasis
used for wastes, hormones, and proteins produced by the cells.
expulsion of materials from cell through the binding of a vacuole to the cell membrane
process by which a cell surrounds and takes in LARGE particles from the enviroment
the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
a biological influence on an organism (including anything living)
a physical component of an ecosystem (includes sunlight, heat, wind, anything non-living)
maximum number of individuals of a particular species that a particular environment can support
a set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products.
the force within the cell that pushes the plasma membrane against the cell wall
relating to, involving, or requiring an absence of free oxygen.
relating to, involving, or requiring free oxygen.
the energy currency of life
the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water
a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis
a movement of ions and other atomic or molecular substances across cell membranes without need of energy input.
capture existing energy and use it to produce energy
a lipid containing a phosphate group in its molecule
a protein that serves the function of moving other materials within an organism.
contain energy and nutrients by consuming other living things
a relationship in which both species benefit
a relationship in which one organism lives on or inside another, harming it
a relationship in which one organism benefits, but the other is neither helped nor harmed
an organism's niche describes how the organism interacts with other organisms and how the organism uses available resources
each step in a good chain (every time you move up, only 10% of that energy continues to move up. the rest is lost as heat)a group of different populations that live together in a defined area
a group of different populations that live together in a defined area
consists of all the organisms that live in a place and their environment
what is the basic unit of living things?
an organism's tolerance helps determine where the organism lives or the organism's habitat
what is the basic building block of protein?
what is an enzyme?
a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.
how do enzymes work?
they speed up a specific reaction, works with the active site
what factors influence enzyme function?
temperature, pH levels
what role does lipids have on living things?
hey play many important roles in maintaining the health of an organism.
how are plant and animal cells alike?
they are both eukaryotic cells
how are plant and animal cells different?
chloroplasts, the cell wall, and vacuoles.
tissue, organ, organelle, cell, organism, organ system from least to most complex.
organelle, cell, tissue, organs, organ system, organism
how many layers does the cell membrane have?
What is the main component of the cell membrane?
phospholipids, glycolipids, proteins, and cholesterol
How do cells respond when placed into hypotonic solutions?
cell swells, water moves into the cell, lower concentration outside of cell
What is the basic formula for photosynthesis?
6 CO2 + 12 H2O + Light Energy ---> C6H12O6 + 6 O2 + 6 H2O
Why would a plant not thrive if only provided the green part of the visible light spectrum?
plants absorb light at very specific wavelengths to obtain energy. In particular, chlorophyll absorbs blue and red light while allowing green light to be reflected
Why is cellular
respiration referred to as an aerobic process?
During the Krebs cycle, chemical reactions breakdown carbon-based molecules.Fermentation is important, because it allows glycolysis to continue making ATP when oxygen is unavailable for cellular respiration
How do organisms get the energy they need?
Other organisms eat green plants (which has a store of the energy they produce) to obtain energy.
What is the basic formula for cellular respiration?
C6H12O6 + 6O2 --> 6H2O + 6CO2 + ATP.
How does energy get into a food chain?
What organism always forms the base of a food web, chain and/or ecological pyramid?
Why is water essential for life?
In a liquid, molecules can dissolve and chemical reactions occur. And because a liquid is always in flux, it effectively conveys vital substances like metabolites and nutrients from one place to another, whether it's around a cell, an organism, an ecosystem, or a planet.
What property of water makes it capable of dissolving compounds?
the ionic and polar covalent compounds.
higher concentration outside the cell, water moves out, cell shrinks
concentration outside is equal to the inside, water moves in both directions, cell stays normal shape