Review- Test 2 Flashcards
compounds that contain carbon atoms in chains/rings
organic compounds
compounds that do not contain carbon atoms in chains/rings
inorganic compounds
a chain of carbon atoms that are covalently bonded together with attached hydrogen atoms
hydrocarbon chain
groups of specific atoms that are bonded to the hydrocarbon chain and will add to the function of a compound
functional group
list some examples of a functional group
hydroxyl group,
carboxyl group,
amino group,
methyl group
hydroxyl group structure
-OH
carboxyl group structure
-COOH
amino group structure
-NH₂
methyl group structure
-CH₃
example of an organic compound
glucose (C₆H₁₂O₆),
maltose (C₁₂H₂₂O₁₁)
example of an inorganic compound
H₂O, CO₂, H₂CO₃, CCl ₄
only one Carbon
the removal of water from between two smaller compounds to form a larger, more complex compound (small → large)
dehydration synthesis
the addition of water to a large, complex compound to break it down into smaller, simpler compounds (large → small)
hydrolysis
sucrose (dehydration synthesis equation)
Glucose + Fructose → Sucrose + H₂O
sucrose (hydrolysis equation)
H₂O + Sucrose → Glucose + Fructose
lactose (dehydration synthesis equation)
Glucose + Galactose → Lactose + H₂O
lactose (hydrolysis equation)
H₂O + Lactose → Glucose + Galactose
maltose (dehydration synthesis equation)
Glucose + Glucose → Maltose + H₂O
maltose (hydrolysis equation)
H₂O + Maltose → Glucose + Glucose
protein (dehydration synthesis equation)
Amino Acids → Protein + H₂O
protein (hydrolysis equation)
H₂O + Protein → Amino Acids
triglyceride (dehydration synthesis equation)
3 Fatty Acids + 1 Glycerol → Triglyceride + 3H₂O
triglyceride (hydrolysis equation)
3H₂O + Triglyceride → 3 Fatty Acids + 1 Glycerol
structure of triglycerides
Glycerol + 3 fatty acids
structure of phospholipids
Glycerol + 2 fatty acids + phosphate group
structure of sterols
4 fused Carbon rings
What is the difference between a saturated fat and an unsaturated fat?
saturated: only single bonds between Carbon atoms,
unsaturated: one/more double bond between Carbon atoms
Which is better for you, saturated or unsaturated fats?
unsaturated
3 functions of lipids (fats) in the body
concentrated energy,
protection of internal organs,
insulation
What are the monomers (building blocks) of proteins?
amino acids
identify/name some proteins
keratin, collagen, myosin, hemoglobin
Why are proteins neccessary for the body?
they control all the activities of life, missing one can result in illness or death, they do more jobs in the cell than any other type of biological molecule
What are the monomers (building blocks) of nucleic acids?
nucleotides
What does DNA stand for?
deoxyribonucleic acid
What does RNA stand for?
ribonucleic acid
What are the structural differences between DNA and RNA?
DNA: double stranded/double helix (strands are anti-parallel), deoxyribose (5-Carbon sugar), Thymine (nitrogenous base)
RNA: single stranded, ribose (5-Carbon sugar), Uracil (nitrogenous base)
nitrogen bases of DNA
Adenine ↔ Thymine
Guanine ↔ Cytosine
nitrogen bases of RNA
Adenine ↔ Uracil
Guanine ↔ Cytosine
3 components of a nucleotide
5-Carbon sugar (pentose),
Phosphate group,
Nitrogen base
What are the differences between prokaryotic and eukaryotic cells?
prokaryotic: lack a nucleus
eukaryotic: contain a nucleus and other membranous organelles
examples of organisms whose cells are prokaryotic
bacteria…
examples of organisms whose cells are eukaryotic
animals…
3 statements to the Cell Theory
- Cells are the basic structural and functional units of life.
- All living organisms are composed of one or more cells.
- All cells arise from pre-existing cells.
structural composition of the cell membrane
phospholipid bilayer…
functional properties of the cell membrane
semipermeable…
compartments of eukaryotic cells that perform specialized functions
organelles
the basic structural and functional units of all living organisms
cells
What is the purpose of the cholesterol in the cell membrane?
helps maintain the fluid-like property of the cell membrane,
helps prevent a drastic decrease in fluidity accross the cell membrane,
has 4 Carbon rings with structures attached
occurs when there is a difference in the concentration (number) of molecules on either side of the cell membrane
concentration gradient
the movement of molecules across the cell membrane from an area of high concentration to low concentration until equilibrium is established
simple diffusion
the movement of water across the cell membrane from high to low concentration until equilibrium is established
osmosis
the movement of glucose through a transport protein from high to low concentration until equilibrium is established
facilitated diffusion
list the passive transport processes
Simple Diffusion (O₂, CO₂), Osmosis (H₂O), Facilitated Diffusion (Glucose)
Which category of transport processes requires ATP?
Active Transport Processes
3 ways in which the rate of diffusion can be accelerated
heat,
stir,
shake
3 factors that determine whether or not material can move through the phospholipid bilayer of the cell membrane
size,
charge,
solubility
process by which ions move through the cell membrane, through a transport protein, from low to high concentration until equilibrium is established
active transport
the process by which material is released by the cell
exocytosis
the process by which material is taken into the cell
endocytosis
types of endocytosis
Phagocytosis,
Pinocytosis
2 main Cell-Mediated Transport Processes
Endocytosis,
Exocytosis
the process by which liquid material is taken into the cell (“cell-drinking”)
pinocytosis
the process by which large, solid material is taken into the cell (“cell-eating”)
phagocytosis
a solution in which the solute concentration outside of the cell is greater than the solute concentration inside the cell
hypertonic solution
a solution in which the solute concentration outside of the cell is less than the solute concentration inside the cell
hypotonic solution
a solution in which the solute concentration outside of the cell is equal to the solute concentration inside of the cell
isotonic solution
What are the effects of a hypertonic solution on red blood cells?
lose H₂O,
shrink
What are the effects of a hypertonic solution on plant cells?
cell’s vacuole loses H₂O,
cell membrane pulls away from cell wall
What are the effects of a hypotonic solution on red blood cells?
gain H₂O,
swell and burst
What are the effects of a hypotonic solution on plant cells?
cell’s vacuole gains water,
internal pressure increases
What are the effects of an isotonic solution on red blood cells?
cells will gain and lose weight (helps maintain shape)
condition of red blood cells in a hypotonic solution
hemolysis
condition of red blood cells in a hypertonic solution
crenation
condition of plant cells in a hypertonic solution
plasmolysis
condition of plant cells in a hypotonic solution
turgor pressure
control center of the cell, directs all cellular activity, not all cells have one, double phospholipid bilayer, highly porous, contains nucleolus and DNA
nucleus
system of membranous channels
endoplasmic reticulum
outer membrane joins to outer membrane of nucleus,
ribosomes on surface,
function: protein synthesis,
high # in pancreas
rough endoplasmic reticulum
no ribosomes on surface,
helps to detoxify harmful substances,
high # in liver
smooth endoplasmic reticulum
a system of flattened sacks that are interconnected;
function: recieves, processes, and repackages material for transport/export
Golgi body/apparatus
2 types of vesicles
transport vesicle,
secretory vesicle
specialized vesicles produced by the Golgi body, contain digestive (hydrolytic) enzymes, functions: important for normal growth and development, recycle worn out cell parts
lysosomes
“powerhouse of the cell”,
function: aerobic cellular respiration (produce ATP)
mitochondrion (mitochondria)
contain chlorophyll,
sites of photosynthesis;
(all plants, some protists, some bacteria)
chloroplast
PLANTS: centrally located stores primarily water (some pigments and waste material & in some cases toxins); ANIMALS: smaller and more numerous, contain water and some dissolved solutes; SOME PROTISTS: contractile \_\_\_ expells excess water
vacuole
non-membranous organelles;
EUKARYOTIC: protein synthesis in cytoplasm, attached to R.E.R., in mitochondria, in chloroplasts, Golgi body;
PROKARYOTIC: protein synthesis, located in cytoplasm
ribosomes
non-membranous organelles, not in plants, located in pairs just outside the nucleus, spindle fibers help to provide movement, made up of microtubules
centrioles