Biology Flashcards
ATP
adenosine triphosphate; source of energy storage within cells
respiration
exchange of O2 and CO2 btwn the atmosphere and the body/cell
synthesis
creation of a compound by the union of its elements
regulation
adaptation to a standard condition
metabolism
physical + chemical processes by which molecules are broken down to make energy available to an organism
homeostasis
adjusting to conditions to maintain stability
genus
1st of 2 parts of a name (CANIS lupus)
species
2nd of 2 parts of a name (canis LUPUS)
Whats the terms for organism classification from biggest to smallest?
Kingdom, phylum, class, order, family, genus, species
prokaryotic
single cell, no distinct mucleus (monera class are these)
eukaryotic
1 or more cells with a distinct nucleus (protista, fungi, plants, animals, are examples of eukaryotes)
what defines a chordate?
anything with a spine!
dog/canine order?
carnivora
dog/canine family?
canidae
dog/canine genus and species?
(g) canis (s) lupus
dog/canine subspecies?
familiaris
cat/feline order?
carnivora
cat/feline family?
felidae
cat/feline genus and species?
(g) felis (s) sylvestris
cat/feline subspecies?
domesticus or catus
what would make a cat’s subspecies be categorized as “catus”?
if they’re a wild hybrid, such as bengals and savanahhs
horse/equine order?
perissodactyl
why are horses considered perissodactyls?
they technically only walk on one digit
horse/equine family?
equidae
horse/equine genus and species?
(g) equus (s) caballus
donkey/equine order?
perissodactyl
donkey/equine family’?
equidae
donkey/equine genus and species?
(g) equus (s) asinus
why can’t mules reproduce?
they have two less chromosomes than horses do, meaning they don’t have enough chromosomes to replicate and create offspring
cattle/bovine order?
artiodactyla
what defines artiodactyla?
cloven hooves
cattle/bovine family?
bovidae
cattle/bovine subfamily?
boviNae
cow/bovine genus and species?
(g) bos (s) taurus
sheep/ovine order?
artiodactyla
sheep/ovine family?
bovidae
sheep/ovine subfamily?
caprinae
sheep/ovine genus and species?
(g) ovis (s) aries
goats/caprine order?
artiodactyla
goats/caprine family?
bovidae
goats/caprine subfamily?
caprinae
goats/caprine genus and species?
(g) capra (s) aegagrus
goat/caprine subspecies?
hircus
What does an animal have to have to be in the family bovidae?
4 stomachs
rabbit order?
lagomorpha
rabbit family?
leporidae
rabbit genus?
oryctolagus
rabbit species
cuniculus
pig/swine order?
artiodactyla
pig/swine family?
suidae
pig/swine genus?
sus
pig/swine species?
scrofa
what are guinea pigs commonly also known as?
cavy/cavies
guinea pig/cavy order?
rodentia
guinea pig/cavy family?
caviidae
guinea pig/cavy subfamily?
caviinae
guinea pig/cavy genus?
cavia
guinea pig/cavy species?
porcellus
parrots class?
aves
parrots order?
psittaciformes (bill shape)
In biology, we define organisms by…
locomotion (how they move) and nutrition (how they eat)
locomotion: flagella
one part moves the cell
locomotion: pseudopodia
temporary arm-like projections
autotrophic nutrition
plants; photosynthesis, use sunlight to produce glucose (energy)
heterotrophic nutrition
ingestion of organic material is necessary to gain nutrition
plasma membrane
encloses the body of a cell
cytoplasm
space within a cell containing the nucleus and organelles
nucleus
a spheroid body within a cell containing chromosomes (DNA) and a nucleoli (RNA)
endoplasmic reticulum
a network of membranes within a cell involved in protein, lipid, and glycogen synthesis. there is a smooth and rough version; rough containing ribosomes
ribosomes
perform protein synthesis within a cell, RNA makes and carries genetic code for proteins
organelle
a specialized structure of cell
mitochondria
organelle in cytoplasm that produces ATP
golgi apparatus
organelle in cytoplasm that produces glycoproteins and lipoproteins
lysosomes
“police of the cell” : organelle involved in cellular digestion and killing of microorganisms
vacuoles
a space/cavity in the cytoplasm
cell walls
present in plants and bacteria (except mycoplasmas)
cell membrane has a lipid bilayer, meaning…
it has an outer layer consisting of polar molecules and an inner layer consisting of non-polar molecules
polar
having the opposite effect at 2 extremities (ex: H2O)
cellular transport: absorption
passive transport
cellular transport: diffusion
o2 and h2o
cellular transport: concentration gradient
sodium (moves to less crowded area)
cellular transport: osmosis
cell membrane
what does active transport expend?
energy/ATP
pinocytosis
molecules are dissolved in extracellular fluid and cell ingests them into vacuoles of membrane
phagocytosis
molecules are undissolved and large, cell also ingests them into vacuoles of membrane
endocytosis
uptake of particles by invagination of cell membrane
exocytosis
discharge if cell particles outside the cell; inflammatory response
anaerobic respiration
no ATP, forms lactic acid
oxidation
loss of electrons - charge becomes more positive
aerobic respiration
ATP and O2 required - forms H2O + CO2 (opp of photosynthesis) 2 PHASES
aerobic respiration (anaerobic phase - glycolisis)
forms 2 molecules of pyruvic acid + 4 ATPs, 2 ATPs r utilized
product: 2 ATPs
aerobic respiration (aerobic phase)
occurs in mitochondria, pyruvic acid oxidized to form CO2, H2O, and 34 ATP
Krebs Cycle/tricarboxylic cycle/citric acid cycle
respiration occurs w/in cells of plants/animals - normally generates 38 ATP from oxidation of 1 molecule of glucose
nucleotides
contain a phosphate, a sugar, and 1 of 4 nitrogen bases
the 4 nitrogen bases:
adenine + thymine + guanine + cytosine
adenine pairs with?
thymine
guanine pairs with?
cytosine
thymine pairs with?
adenine
cytosine pairs with?
guanine
RNA
present in all living cells, makes proteins, contains genetic info in some viruses
RNA’s 4 nitrogen bases:
adenine, guanine, cytosine, URACIL
uracil replaces?
thymine
RNA’s sugar is weaker/stronger than DNA’s sugar?
weaker
the 3 kinds of RNA?
messenger, transfer, ribosomal
how many strands does RNA have?
one
polypeptide
a compound containing 2 or more amino acids linked in a peptide bond, makeup enzymes
recombination
reunion of once united but separated elements into the same or different configuration
chromosome
a complex structure present in the nucleus composed of DNA, RNA, proteins, and genetic info of the cell
gene
unit of hereditary that determines physical characteristics, segment of DNA
allele
one of two or more alternative forms of a gene
diploid
having a pair of each chromosome characteristic of a species
homozygosis
form of a cell from a male + female gamete that has identical alleles
genotype
the entire genetic constitution of an individual
phenotype
outward appearance as dictated by genetic + environmental influences in the environment
mitosis
prophase/metaphase/anaphase/telophase
interphase
dna replicates
prophase
chromatin begins to coil, centromeres appear, nuclear membrane disappears
metaphase/anaphase
chromosomes line up and then separate, pulled by poles
telophase
chromosomes reach poles, nuclear envelopes reappear, cytoplasm is separated and 2 cells have been formed
gamete
1 of 2 cells, male or female, whose union is necessary to initiate development of new individual (haploids, parent cells are diploids)
haploid
a single set of unpaired chromosomes
spermatogenesis
male sperm production
oogenesis
female egg production
fertilization
a zygote is formed from union of gametes, zygote is diploid and embryonic development begins
Meiosis I
similar to mitosis but chromosomes of daughter cells do not separate, 2 cells
Meiosis II
4 daughter cells produced, each one containing 1/2 the # of chromosomes of the parent cell
does meiosis or mitosis occur in sexual reproduction?
meiosis
does meiosis or mitosis have recombination?
mitosis