Test 1 + 2
What is synapsis
pairs of homologous chromosomes form a tetrad
Three types of body symmetry and examples from each category
asymmetrical - sponges
Radial- cnidarians and ctenophores
Bilateral- most animals, at least in their larvae stage
What part of the circulatory system carries blood back to the heart?
superior vena cava and inferior
most toxic nitrogenous waste
ammonia
what is an action potential
Movement of positively
charged ions across the
cell membrane
Steps that involve making an protein molecules
Transcription
RNA processing
translation
functions of columnar epithelial tissue
produce mucus
reduce friction
List in order the parts of the heart the signal goes through during conduction
1. SA node
2. AV node
3. bundle of His
4. left and right bundle brnaches
5. purkinge fibers
3 major types of nitrogenous waste
ammonia
uric acid
urea
parts of a neuron
cell body
dendrites
axons
synaptic terminal
mylein sheath
List the 6 characteristics of life
cells
growth and development
metabolsim and homeostasis
respond to stimuli
reproduction
evolve and adapt
draw a simple phylogentic tree that includes a
Node
Branch
sister group and out group
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What does a antigen presenting cell do?
show the foreign antigen to other immune cells to actiavte them
what are the 3 major metabolic wastes
co2
water
nitrogenous wastes
why is a myleinated neuron better?
faster transmission of action potential
In people with two X chromosomes, one X in ever cell becomes? which is?
Barr Body
Inactivated X chromosome
Characteristics of skeletal muscle tissue
voluntary control
muscle attached to bone
long, cylindrical, striated cells
multinucleated
4 types of innate immune cells
neutrophils
macrophages
natural killer cells
Dendritic cells
what is the functional unit of the kidney and what are the parts
nephron
•Glomerulus -> renal tubule (proximal convoluted, loop of Henle, distal convoluted) -> collecting duct
characteristics of autonomous nervous system
involuntary
maintain homeostasis of internal env.
part of parasympathetic and sympathetic NS
Do a dihybrid cross between TtPp X ttpp.
T=Tall t=short
P=purple p=white
Genotypes and Phenotypes? whats the recombinant penotypes?
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6 types of connective tissue
loose connective tissue
fibrous connective tissue
adipose tissue
cartilage
bone
blood
what is cytotoxic t cells and b cells activated by
interaction with antigen ( must have a receptor that matches THAT specfic antigen)
interlekin 2
mammal urinary system pathway
kidney -- ureter -- urinary bladder -- Urethra
characteristics of somatic NS
voluntary
helps adjust body to the external environment