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24 Cards in this Set

  • Front
  • Back

Cell Theory

All organisms are made up of cells


Cells are the basic unit of life


Cells come from existing cells


Robert Hooke-gave us the term cell


Antwon Van Leeanhook- Discovered bacteria (named them animalcules)


Matthios Schlieden- all plants are made out of cells


Robert Virchow- all cells arise from preexisting cells


Theadore Schwan- all animals are made of cells

Prokaryote (Before nucleus)


vs.


Eukaryote (True Nucleus)

Prokaryote: oldest type, small and simple, lack nucleus, lack organelles, single-celled, single circular chromosome




Both: both have DNA, ribosomes, cytoplasm, plasma membrane




Eukaryote: evolved from prokaryote, larger and more complex, contains nucleus, contains organelles, single-celled or multicellular, multiple linear chromosome

Cell Organelles

Rough ER- assemble protein


Smooth ER- regulates calcium and processes toxins


Mitochondria- convert the chemical energy stored in food into compounds that are more convenient for the cell to use


Ribosomes- make protein from RNA


Vacuole- store water and might store food for the cell


Lysosomes- break down waste material and cellular debris


Chloroplasts- absorbs sunlight and uses it in conjunction with water and carbon dioxide to make food for the plant


Golgi Apparatus- gathers simple molecules to make more complex molecules


Cell Wall- the outer layer of a plant cell that gives plants their stiffness


Cell Membrane- regulates what enters and leaves the cell, also supports and protects the cell


Cytoplasm- everything within the cell/holds everything together




Plant cells have a large vacuole while animals don't (plants can't move to get water, so they need to store a lot while animals can move to get water)




Plant cells have a cell wall while animals don't (plants can't move to protect themselves while animals can move to get away from


danger)




Plant cells have chloroplast to make their own food while animals don't(animals can move to get food but plants can't, so they make their own food)

Passive Transport

Diffusion- the process by which particles move from one area of high concentration to an area of low concentration




Facilitated Diffusion- the process in which molecules cannot directly diffuse across the membrane pass through special protein channels




Osmosis- the diffusion of water through a selectively permeable membrane





Active Transport

Definition-The movement of materials against a concentration difference




Active Transport requires energy




Endocytosis- the process of taking material into the cell by means of infoldings, or pockets of the cell membrane




Exocytosis- the process of releasing large amounts of material from the cell



Fluid Mosaic Model


Protein Synthesis

1. Proteins are assembled on ribosomes


2. Proteins targeted for export to the cell membrane, or to specialized locations within the cell, complete their assembly on ribosome bound to the rough endoplasmic reticulum


3. Newly assembled proteins are carried from the Rough ER to the Golgi Apparatus in vesicles


4.RNA bring amino acids to ribosome according to the original DNA code


5. Vesicles from the Golgi Apparatus are shipped to their final destination in or out of, the cell

Properties Of Water







Polar Molecule- A molecule with uneven positive and negative charges




Cohesion - Two molecules that bond together




Adhesion- Combine or bond to different molecules




Universal Solvent- Water is capable of dissolving a variety of different substances

pH Scale

Acid-An acid is a substance that donates hydrogen ions. Because of this, when an acid is dissolved in water, the balance between hydrogen ions and hydroxide ions is shifted. Now there are more hydrogen ions than hydroxide ions in the solution. This kind of solution is acidic.


Base-A base is a substance that accepts hydrogen ions. When a base is dissolved in water, the balance between hydrogen ions and hydroxide ions shifts the opposite way. Because the base "soaks up" hydrogen ions, the result is a solution with more hydroxide ions than hydrogen ions. This kind of solution is alkaline.


Buffer-A solution which can maintain an almost constant pH value when dilute acids or alkalis are added to it.









Organic Compounds



An organic compound is any member of a large class of gaseous, liquid, or solid chemical compounds whose molecules contain carbon.




Elements that bond with carbon for life- Hydrogen, Oxygen, Phosphorous, Sulfur, and Nitrogen




Macromolecule: Lipids

Monomer- Carbon and Hydrogen




Function- Store energy, some are important parts of biological membranes and water proof covering




Ex: Milk Butter Olive Oil


Macromolecule: Protein

Monomer - Contain nitrogen as well as carbon and hydrogen and oxygen




Function- Some control the rate of reactive and regulate cell processes while others form important/cellular structure and others transport substances into or fight disease




Ex: Meat Seafood Beans


Macromolecule: Carbohydrates





Monomer- Carbon, Hydrogen, and Oxygen




Function- For animals it's energy and for plants it's used for structural purposes




Ex: Glucose Monosaccharide's Bread Pasta Rice


Macromolecule: Nucleic Acid

Monomer - Nucleotide




Function- Store and transmit hereditary or genetic information




Ex: Ribonucleic acid, and Deoxyribonucleic acid


Enzymes

Role of enzymes- Speed up the rate of chemical reactions in cells




Catalase- A substance that speeds up the rate of chemical reaction




Negative- Steroids

Photosynthesis

CO2 + H2O -Light> C6H12O6 + O2


Reactants Products




Light reaction- Light is needed to produce energy molecules




Dark Reaction- No light needed. Uses ATP and NADPH to produce energy molecules

Respiration

C6H12O6 > 6CO2 + 6H20 + Energy


Glycolysis-Occurs in Cytoplasm. Does not require O2. Needs 2 ATP to begin with. ATP produced. Net gain 2 ATP.


Kreb Cycle-Occurs in mitochondria. Requires O2. Co2 realeased.


Electron Transport Chain-Occurs in Mitochondria. Requires O2. Water is Formed. Net gain 34 ATP


Compare and contrast photosynthesis and respiration

Photosynthesis- Different equation Needs sunlight anabolic Endothermic


Both- Occurs in cells Both processes have almost exact same equation


Cellular- Different equation, Needs ATP, Catabolic, Exothermic

Mitosis
Somatic Cells, which means non sex cells
46 total chromosomes in mitosis
Asexual Reproduction
Crossover-

Somatic Cells, which means non sex cells


46 total chromosomes in mitosis


Asexual Reproduction


Crossover-





Meiosis

Haploid- 23 Chromosomes


Crossover - XX+XY


Diploid- 46 Chromosomes


Compare and contrast Mitosis and Meiosis

Meiosis- 4 daughter cells, Chromatids, Do not separate in anaphase, 23 Chromosomes




Both-Occurs in stages interphase cell production




Mitosis-2 daughter cells, Chromatids in anaphase, one set of stages to reproduce





Mitosis: Crossover



Mitosis: Chromosome


Meiosis: Phases