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75 Cards in this Set

  • Front
  • Back
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7 Characteristics of living Things
Organization, Responsiveness, Homeostases, Energy utilization, Reproduction, Evolution Adaptation, Growth change and development
Levels of Organization
molecule
Organelle
Cell
Tissue
Organ
Organ system
organism
population
community
Ecosystem
Eubacteria
True bacteria, most diverse and widespread prokaryotes, tiny unicellular lack nucleus, absorb food
Archaebacteria
Consist of prokaryotes, live in the Earth's extreme environment, among earth's first inhabitants
Protista
unicellular eukaryotes and their relatively simple multicellular relatives. Have nucleus
Fungi
Decomposers, cell walls made of chitin
Plantae
carry out photosynthesis, produce own food and sugars, cell walls made of cellulose, don't move.
Anamilia
Obtain food from others by ingestion, lack cell walls, normally can move.
Covalent Bond
Involves sharing of electrons, is responsible for water having the properties of cohesion and high specific heat.
Hydrogen bond
A weak interaction, constantly breaks and reforms.
Carbohydrate
Starch, both a fuel and building material.
fuel=sugars.
storage= starch in plants, or Glycogen in animals.
Stuctural= Cellulose in cell walls of plants, chitin in cell walls of fungus and exoskeletons of crustations and arthropods.
Lipid
Faty acids, saturated and unsaturated.
Triacylglycerol= fat, made up of a glycerol back bone and 3 fatty acids, function storage of energy.
Phospholipid, made up of glycerol back bone, 2 fatty acids, and one phosphate, function makes cell membrane.
Steriod, function in membrane and makes hormones.
Protein
Enzyme, Amino Acids.
Stucture, Storage, Movement, Transport.
Nucliec Acid
DNA,3 parts, Nitrogenous base, Sugar, phosphate group. G,C,A,T.
RNA, U replaces T.
Dehydration Synthesis, Hydrolysis
Remove water to create a covalent bond, breaks bond by adding water.
The Cell Theory, 3 points
1. All living things are conposed of 1 or more cells.
2. the cell is the smallest living unit.
3. Cells arise from division of pre-existing cells
1. all living cells are composed of...
2. smallest living unit
3. cells arise from...
4 Features shared by all cells
1. Cell Membrane
2. contain Cytosol
3. Contain DNA
4. All cells have ribosomes
1. Surrounded by this
2. Filled with this
3. In the nuclus and makes us who we are
4. Make proteins
Two major types of cells
1.Prokaryotic
2.Eukaryotic
1.lack membrane bound nucleus include Eubacteria and Archbacteria
2. Have a membrane bound nucleus, include plantea, anamilia, fungi, and protista
Prokaryotic Cells
1. very small
2. meny have capsules, pili, flagella,cell walls, plasma membrane, Ribosomes, cytosol, Nucleoid
3. No nucleaus, organelles, cytoskeleton
1. Feature (what it looks like)
2. What it has
3. whats absent
Eukaryotic Cells
1.larger and more stucturally complex
2.membrane bound nucleus, cytoplasm with cytosol and organelles, cytoskeleton
1.feature
2. makes it different from prokaryotic cells, 2 things inside, internal scaffolding and support framework
Distinguishing Features of Animal cells
1. Nucleous
2. lots of organelles
3. Cytoskeleton
4. No cell wall
5. no chloroplasts
6. No central Vacuole
1. contorl center
2. lots of these (general)
3. internal scaffolding
4. doesn't have this protective layer
5. not green
6. doesn't have this storage place
Distinguishing features of Plant cell
1. Cell wall
2. central vacuole
3. chloroplast
4. nucleus
5. organelles
6. cytoskeleton
7. Lack contriole
1. out most layer of protection
2. storage area
3. green
4. control center
5. lots of these (general term)
lack this
Disinguishing features of fungal cells
1.Cell wall
2.plasma membrane
3. nucleus
4. organelles
5. cytoskeleton
6. no central vacuole
7. no chloroplast
1. made of chitin
2. phospholipids make this up
3. control center
4. general term
5. internal scaffolding
6. lack storage
7. not green
Nuclear Envelope
1. double membrane and space in the middle
2.periforated with pores
1. ____ ___ & ___ in the ____
2. _____ with _____.... how things get in and out
Nucleous
1. darkly stained region in nucleous region in the middle
1. _____ ____ _____ in __ ___ in the _____
Nucleoplasm
1. Where ribosomes are assembled
2. Gel like interior
1. these are made here
2. nucleoplam made of...
DNA
1. packaged in nucleus
2. DNA+Protein= Chromosome
1. how is it organised in nucleus
2. ____ + ___ = ________
Non Dividing cells
1. loose coils
2. chromatid
1. tight or loose coils
2. called
Dividing cells
1. Tight coils
1. tight or loose coils
Chromosome structure
1. DNA wrapped around histone
1. DNA wrapped around a protein...whats the name of the protein
Endoreticulum
net work of membrane tubes and sacks
Rough ER
has ribosomes on surface
Smooth ER
1.lacks ribosomes
2 lipd synthesis, detixification, involved in metabloism
1. looks
2. 3 functions
Golgi Apparatus
modifies sorts and pacakges molecules
function
The Endomembrane System
the role of this system is secretion
role
The secretoy pathway
1. Proteins synthesized by RER ribosomes
2. Protein injected into interior of RER (lumen) and packaged into transplant vesicals
3. proteins reach the golgi and are modified and sorted
4. secretory vesicles containing proteins bud from golgi
5. proteins are expelled from the cell
1. proteins ____ by _ _ _ _____
2.proteins ____ into ____ of _ _ _ ( ____ ) & ____ into _____ ______
3 ____ reach the ___ and are ____ & _____
4. _____ ____ ____ ____ bud from _____
5. _____ are ____ from the ____
Lysosomes
1. membrane bond vesicles
2. contain a group of enzymes that break down food and other substances
1. bound by this
2. contains Acid Hyrolases that do this
Peroxisomer
1.membrane bond sac
2. Enzyme break down hydrogen peroxide
1. bound by this
2. has enzymes that do tihs
Mitochondria
1. surrounded by 2 membranes
2. power house produced ATP
1. outer membrane and inner membrane
2. function
chloroplasts
1. plant organelle called a plastid.
2. two membranes
3. contains chlorophil
1. plant organelle called a
2. ___ membranes
3. contains this which is responsible for photosynthesis
cytoskeleton
1. motility, and support
2.microtubule, microfiliment, intermediate filament
1. 2 functions
2. 3 types of internal scaffolding
Microtubule
1. Transport vesicle
2. form spindle fibers, cilia and flagella
1. hollow tube function
2. forms 3 things
Microfilament
1. solid slender rods
2. general support and keeps shape
3. muscle contraction
4. pinching of cytoplasim
1 looks
2 function 2
3 helps with this (muscles)
4 responsibel for this during cytokinesis
Intermediate Filament
1. stable robs
2. strength and support
1. looks, very strong fibers
2 functions
centrosome and centrioles
involved in forming spindle during cell division
function
The cell cycle
life of a cell from time formed until it divides
mitosis
division of nucleus
cytokinesis
division of the cytoplasm
Starts at the end of telophase
interphase
longest phase, includes G1, S and G2
G1 (Gap 1)
Growth phase
metablolizing
S (Synthesis)
DNA synthesis, DNA replication
G2 (gap 2)
Growth
protein synthesis preparing to divide
Prior to Mitosis:Interphase
1. DNA exsist as duplication chromosomes
2. chromosomes appear threadlike mass called chromatin
4 phases of mitosis
1. Prophase
2. metaphase
3. anaphase
4. telophase
Prophase
1. Nuclear envelope dissapear
2. Nucleous disappear
3. centrosomes migrate to opposite poles, spindle fibers form
4. Chromosomes are condensing
Metaphase
1. chromosomes align on equator
Anaphase
1. centromere slpits
2 sister chromatidz pulled to opposite poles by spindle fibers
Telophase
(opposite of prophase)
1. Nulclear envelope reappear
2. Nucleolus reappear
3. spindle fibers dissapear
4. Chromosomes uncoil and become thread like again
Cytokinesis in plant cells
cell plate forms, new cell wall forms from that splitting cell into 2
Cleavage Furrow
pinching of cell membrane to make two dughter cells
membrane Structure
1. Lipids
2. Proteins
3. CArbohydrates
membrane Stucture: Lipids
Phospholipid
contains glycerol backbone, 2 fatty acids and 1 phosphate group
head=phosphate=hydrophilic
tails=fatty acids=hydrophobic
arrangment bilayer
also cholesterol inserted among phospholipids
Membrane stucture: Protein
two types
integral-embedded in membranes, most go from one side to the other
peripheral-dissociated with both outer and inner surfaces
Membrane Stucture: Carbohydrates
Associated with the outside
Glycocalyx
sugar rich zone
Hypotonic in animal cells
lower water level and higher solute levels (inside) water diffuses in and cell will swell and burst
Hypertonic, in animal cells
high water and low solute levels inside water diffuses out cell shrinks
Isonic
same or equal levels in and out, cell shape is maintained
Hypotonic
low water high solute(inside) water enters. cell will swell vacuole fills with water pushes against plasma membrane (calld turgor pressure) limits further entrance of water
hypertonic
high water low solute in cel water leaves, vacuole shrinks membrane with draws from cell wall (plasmolysis)
Iotonic
Equal and opposite
Faciliated Diffusion
"helpers" integral membrane protiends.
2 tyeps
channel protein
transport proteins or carriers (passive- high to low concentrate
Active Transport
Require energy
against concentrate gradient
low-high (uphill)
active transport: Endocytosis
Uptake of larger substances into the cell- enter by vesicles
Endocytosis: Phagocytosis
"cell eating"
extensions of cytoplasm called pseudopods surrond particle and enclose in on a vesicle
vesicle have lysomes will digest particles