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Mid-Term Review
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159
Biology
9th Grade
01/14/2012

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Term
Theory
Definition
World widely tested and accepted hypothesis
Term
Resolving Power
Definition
Ability to see very close objects as separate
Term
Names of the 5 Kingdoms
Definition
Monera: Prokaryotic unicelled, Bacteria and B-G Algae
Protista: All unicellular, can be beneficial and pathogenic (Euglena, Amoeba)
Fungi: Multi-celled except yeast. Eukaryotes. (Mushroom, mold)
Plantae: unicellular algal plants, mostly multicelled, autrophic producers
Animalia: Multicelled, heterotrophic, mobile

F
Term
Names of the 3 Domains
Definition
Archaea, Prokara, Eukarya
Term
11 Characteristics of Life
Definition
1. Made up of cells
2. Needs Food
3. Energy, can do work
4. Food Production and Energy Transfer
5. Growth and Development
6. Maintain and Repair
7. Reproduction
8. Levels of Organization
9. Adaptation
10.Genetic Code
11.Response to Stimuli
Term
Autotroph
Definition
Makes their own food
Term
Heterotroph
Definition
Feeds off other organisms
Term
Photosynthesis
Definition
Plants using light to make glucose
Term
Photosynthesis Formula
Definition
C02+H20+Light=C6H12O6+o2
Term
Saprophyte
Definition
Microbes of decay, bacteria, fungi
Term
Detritovore
Definition
Other decomposer, Earthworm
Term
Process used to cause motion
Definition
Cellular respiration within mitochondria
Term
Formula for cellular respiration
Definition
Glucose+Oxygen+36ADP+36AMP=36ATP+Carbon Dioxide+Water
Term
Biomass
Definition
All the levels in an energy pyramid
Term
Trophic Levels
Definition
Each individual level in an energy pyramid
Term
Food Chain
Definition
Series of organisms consuming others in an ecosystem
Term
Food Web
Definition
Many intersecting food chains
Term
2 Things that determine growth and development
Definition
Heredity(transmission of traits) and Environment
Term
Metabolism
Definition
Sum of all chemical reactions
Term
Catabolic
Definition
Bigger to smaller (Digestion)
Term
Anabolic
Definition
Smaller to bigger (Protein synthesis)
Term
Homeostasis
Definition
Internal Balance
Term
Asexual Reproduction
Definition
Reproduction without the sexes
Term
Sexual Reproduction
Definition
Reproduction involving the sexes
Term
Order of the levels of organization
Definition
Atoms-Molecules-Organelles-Cells-Tissue-Organ-Organ System-Organism-Population-Community-Ecosystem-Biome-Biosphere
Term
Adaptation
Definition
Feature which promotes survival in an environment
Term
Genetic Code
Definition
Code responsible for traits
Term
Ecology
Definition
Study of how organisms interact with each other in their environment(habitat)
Term
List of some Abiotic Factors
Definition
Soil, Air, Water, Sun, Temperature, pH (Acidity/Basicness)
Term
Nitrogen Fixation
Definition
Bacteria, B-G Algae, Lichens, and Legumes take atmospheric nitrogen gas and "fix it" into the soil as Ammonia NH3.
Term
What happens to the NH3 Ammonia after it is fixed into the soil? After that?
Definition
It is denitrified by bacteria into No3 Nitrates which plants can use. Plants then die and decompose releasing N2 back into the atmosphere.
Term
Condensation
Definition
Water vapor condenses into clouds
Term
Precipitation
Definition
Water falls back to earth in the form of rain, snow, sleet, or hail.
Term
Transpiration
Definition
Water evaporates from the leaves of plants.
Term
Evaporation
Definition
Process where water changes from liquid form to atmospheric gas.
Term
Carbon Cycle Process
Definition
CO2 in air is used by plants for photosynthesis, carbon stored in plant tissue, Plants can either respirate the co2 back into the atmosphere or decompose releasing the co2 also into the atmosphere. The plants could also be eaten by animals then the animals respirate the co2 back to the atmosphere.
Term
Science
Definition
Organized way of using evidence to learn about the natural world
Term
Observation
Definition
Process of gathering info about processes in a careful, orderly way. (Involves senses)
Term
Inference
Definition
Logical interpretation based on prior knowledge.
Term
Hypothesis
Definition
Proposed scientific explanation for a set of observations.
Term
Variables
Definition
Factors that can change in an experiment.
Term
Manipulated Variable
Definition
Deliberately changed variable.
Term
Responding variable
Definition
Observed and changes in response to the manipulated variable.
Term
Biogenesis
Definition
Generating from life.
Term
Biology
Definition
Science that seeks to understand living world.
Term
Cell
Definition
Small, self-contained units found in all living things.
Term
Stimulus
Definition
Signal to which an organism responds.
Term
Homeostasis
Definition
Process by which organisms keep internal conditions constant to survive.
Term
Evolution
Definition
Ability of a group of organisms to change over time.
Term
Metric System
Definition
Decimal system of measurement whose units are based on certain physical standards and are scaled on multiples of 10.
Term
Cell Culture
Definition
Group of cells that develop from an original cell.
Term
Cell Fractionation
Definition
Process to separate the different cell parts.
Term
Species
Definition
Group of organisms that are similar and can produce fertile offspring.
Term
Populations
Definition
Groups of individuals that belong to the same species and live in the same area.
Term
Communities
Definition
Assemblages of different populations that live together in a defined area.
Term
Ecosystem
Definition
Collection of all the organisms living in a particular place together with their nonliving surroundings.
Term
Biome
Definition
Group of ecosystems that have the same climate and similar dominant communities.
Term
Chemosynthesis
Definition
Organisms use chemical energy to produce carbohydrates.
Term
Carnivores
Definition
Eat only animals.
Term
Herbivores
Definition
Eat only plants
Term
Omnivores
Definition
Eat plants and animals.
Term
Biogeochemical cycles
Definition
Connect biological, geological, and chemical aspects of the atmosphere.
Term
Nutrients
Definition
Chemical substances that an organism needs to sustain life.
Term
Denitrification
Definition
Other types of bacteria use this process to convert nitrates into nitrogen gas releasing nitrogen gas into the atmosphere once again.
Term
Primary Productivity
Definition
Rate at which organic matter is created by producers.
Term
Limiting Nutrient
Definition
When an ecosystem is limited by a single nutrient that is scarce or cycles slowly.
Term
Algal Bloom
Definition
When an aquatic ecosystem recieves a large input of a limiting nutrient increasing the amount of algae.
Term
3 Points of Cell Theory
Definition
All living things composed of cells
Cells Basic units of structure and function in living things
New cells produced from existing cells
Term
Nucleus
Definition
Large membrane enclosed structure that contains the cell's genetic material in the form of DNA.
Term
Eukaryote
Definition
Cell containing a nucleus
Term
Prokaryote
Definition
Cell not containing a nucleus
Term
Organelle
Definition
Specialized structure that performs important cellular functions within a eukaryotic cell.
Term
Cytoplasm
Definition
The portion of the cell around the nucleus.
Term
Nuclear Envelope
Definition
Substance that surrounds the nucleus composed of two membranes dotted with thousands of nuclear pores allowing material to move in and out of the nucleus.
Term
Chromatin
Definition
Granular material inside the nucleus that contains DNA bound to protein.
Term
Chromosomes
Definition
Threadlike structures that contain the genetic information that is passed from one generation to the next.
Term
Nucleolus
Definition
Small, dense region within the nucleus where the assembly of ribosomes begins.
Term
Ribosomes
Definition
Small particles of RNA and protein found throughout the cytoplasm. (Make proteins)
Term
Endoplasmic Reticulum
Definition
The site where lipid components of the cell memvrane are assembled, along with proteins and other materials taht are exported from the cell.
Term
Golgi Apparatus (Bodies)
Definition
Organelle whose function is to modify, sort, and package proteins and other materials from the ER for storage in the cell or secretion outside the cell.
Term
Lysosomes
Definition
Organelles filled with enzymes that breakdown lipids, carbs, and proteins into small molecules that can be used by the rest of the cell.
Term
Vacuoles
Definition
Saclike structures that store materials such as water, salts, proteins, and carbohydrates.
Term
Mitochondria
Definition
Organelles that convert the chemical energy stored in food into compounds that are more convenient for the cell to use.
Term
Chloroplasts
Definition
Organelles that capture the energy from sunlight and convert it into chemical energy in a process called photosynthesis.
Term
Cytoskeleton
Definition
A network of protein filaments that help the cell to maintain its shape.
Term
Centrioles
Definition
Located near the nucleus and help to organize cell division. (Not in plant cells)
Term
Cell Membrane
Definition
Thin, flexible barrier that surrounds all cells.
Term
Cell Wall
Definition
Strong supporting layer around the membrane only in plant cells.
Term
Lipid Bilyer
Definition
Double-layered sheet that is the composition of nearly all cell membranes.
Term
Concentration
Definition
The mass of a solute in a given volume of solution. (mass/volume)
Term
Diffusion
Definition
Process in which particles move from an area where they are more concentrated to an area where they are less concentrated.
Term
Equilibrium
Definition
When the concentration of the solute is the same throughout a system.
Term
Osmosis
Definition
Diffusion of water through a selectively permeable membrane.
Term
Isotonic
Definition
Concentrations are equal on both sides of the membrane.
Term
Hypertonic
Definition
Greater amount of solute.
Term
Hypotonic
Definition
Lesser amount of solute.
Term
Facilitated Diffusion
Definition
Molecules, such as glucose, that cannot diffuse across the cell membrane's lipid bilayer on their own move through protein channels instead.
Term
Active Transport
Definition
Process by which cells move materials in the opposite direction against a concentration difference requiring energy.
Term
Endocytosis
Definition
Process of taking material into the cell by means of pockets of the cell membrane.
Term
Phagocytosis
Definition
Taking in a solid
Term
Pinocytosis
Definition
Taking in a liquid
Term
Exocytosis
Definition
The membrane of the vacuole surrounding the material fuses with the cell membrane forcing the contents out of the cell.
Term
Cell Specialization
Definition
Cells throughout an organism can develop in different ways to perform different tasks.
Term
Tissue
Definition
Group of similar cells that perform a particular function.
Term
Organ
Definition
Many tissues working together.
Term
Organ System
Definition
Group of organs that work together to perform a specific function.
Term
Matthias Schleiden said...
Definition
Plants are made of cells
Term
Theodor Schwann said...
Definition
Animals are made of cells
Term
Made the first microscope
Definition
Anton van Leeuwonhoek
Term
Looked at slices of cork
Definition
Robert Hooke
Term
Postulated the cell theory
Definition
Rudolf Virchow
Term
Cristae
Definition
Inner membrane of the mitochondria
Term
Plastids
Definition
Pigment containing organelles
Term
Granium
Definition
Stack of membranes in a chloroplast
Term
Thylakoids
Definition
Solar collectors in a chloroplast that are in stacks.
Term
Chlorophyll
Definition
Green pigment in a chloroplast
Term
Leucoplasts
Definition
Store starches
Term
Cristernae
Definition
Stacks in the golgi bodies
Term
Centrosome
Definition
Area near the nucleus containing the centrioles
Term
2 Materials that make up the cytoskeleton
Definition
Microtubules and microfilaments
Term
Solvent
Definition
Substance of greatest concentration (Water, universal solvent)
Term
Solute
Definition
Substance of lesser concentration that dissolves in the solvent.
Term
Plasmolysis Shrinkage
Definition
When something has a higher concentration of water in a solution it shrinks to reach a dynamic equilibrium.
Term
Factors determining Permeability
Definition
Size, Shape, Electrical Charge, Phase of Matter, Solubility in water, solubility in lipids (fats)
Term
Passive Transport
Definition
Diffusion without using energy
Term
Plasmolysis
Definition
Excessive cell water loss=Death
Term
Osmotic Pressure
Definition
Pressure resulting from water moving inot a cell in plants. (Turgor)
Term
Contents of a phospholipid
Definition
Head-Glycerol and P04
Tails-2 Fatty Acids
Term
Cholestrol
Definition
Animal fat, adds strength, and rigidity to a fluid membrane.
Term
Carbohydrate Chains
Definition
Markers and recievers of chemical messages
Term
Abiogenesis
Definition
Idea that life could come from the nonliving.
Term
Spores
Definition
Reproductive cell of bacteria, fungi, algae, and some plants.
Term
Pasteurization
Definition
Heating process sterilizes the flask.
Term
Mitosis
Definition
Equal distribution of replicated chromosomes to new nuclei.
Term
Cytokinesis
Definition
Division of the cytoplasm.
Term
2 Proteins that control cell division
Definition
Cyclins and Kinase
Term
Order of the stages of Mitosis
Definition
PMAT Prophase, Metaphase, Anaphase, Telophase
Term
Interphase
Definition
Chromosomes replicate, (nonreproductive stage)Cell growth, respiration, protein synthesis, manufacturing of organelles, preperation for mitosis.
Term
Prophase
Definition
Chromatin condense into a pair of replicated sister chromosomes, nuclear membrane and nucleus disintegrate, centrioles begin migrating toward opposite poles, spindle fibers form between centrioles, asters radiate out from centrioles, centromeres attach to the spindles, chromatids begin moving to the equator. (prometaphase)
Term
Metaphase
Definition
Chromatids line up along the cell middle.
Term
Anaphase
Definition
Centromeres split, spindle fibers shorten and thicken, pulling the double stranded chromatids apart, mid to late anaphase actin and myosin proteins wrap around the cell and pinch in beginning cytokinesis.
Term
Anaphase in Plant Cells
Definition
Cell plate forms from membranes and divides the cell beginning cytokinesis.
Term
Telophase
Definition
46 single stranded chromosomes at each pole, nucleoli reform, nuclear membrane reforms around chromosomes, animals-complete pinching in. Plants-Complete cell plate formation. Chromosomes revert back to chromatin appearance, 2 identical daughter cells are formed which will enter their own cell cycle.
Term
Karyotype
Definition
Chart showing the # and kind of chromosomes
Term
Diploid
Definition
Paired chromosomes
Term
2 Reasons why cells divide
Definition
DNA overload, Exchange of materials, surface area to volume ratio shrinks.
Term
3 Ways Cells Regulate their cell cycles
Definition
When cells touch each other, they stop growing
Outside signals from carbohydrate chains,
Cyclins and kinase within the cell
Term
Cancer
Definition
Uncontrolled mitosis, cells typically do not respond to external and internal regulators.
Term
Tumor
Definition
Mass of cancerous cells that don't respond to regulators.
Term
Metastasis
Definition
When tumor cells spread
Term
Environmental causes of cancer
Definition
Radiation, smoking, viral, alcohol, etc.
Term
Genetic Causes of cancer
Definition
Abnormal p53 gene (controls division prior to replication)
Term
Form of DNA during G1 Phase
Definition
Single stranded unreplicated chromatin
Term
Form of DNA during S Phase
Definition
Double stranded replicated chromatin
Term
Form of DNA during G2 Phase
Definition
Double stranded replicated chromatin
Term
Form of DNA during Prophase
Definition
Double stranded replicated chromatids
Term
Form of DNA during Metaphase
Definition
Double stranded replicated chromatids
Term
Form of DNA during anaphase
Definition
Single stranded chromosomes
Term
Form of DNA during Telophase
Definition
Early telo- Single stranded chromosomes
Late telo- unreplicated chromatin
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