DAT destroyer Flashcards
(142 cards)
State the relationship between double fertilization and Angiosperms
The egg must be fertilized and the nutritious tissue!
Determinate Cleavage vs Indeterminate Cleavage
Determinate refers to normal division into an embryo. Indeterminate results in identical twins.
Homologous structures vs Analagous Structures
analogous=similar in function but not evolutionary origin
homologous=similar in function and in evolutionary origin
What are the 3 laws of thermodynamics?
- Internal energy as a product of work or heat
- Irreversible Reactions. Entropy.
- Entropy is 0 at 0K.
What are the two poles of an embryo? Define the Gray Crescent.
Vegetal Pole. Animal Pole. Animal is where gastrulation is occurring or some fast divison of cells (lively). Gray Crescent refers to the opposite side of sperm penetration. It establishes the body axis.
define diapedesis.
The movement of WBCs across the tiny endothelial pores.
When is an embryo considered a fetus? What markers are there?
Myogenesis and neurogenesis have progressed to where the embryo is capable of motion, and the eyes begin to form. Organogenesis and growth continue. Hair has started to form along with all essential organs. Facial features are beginning to develop. At the end of the 8th week, the embryonic stage is over, and the fetal stage begins.[2]
Define the term for organ development.
Organogenesis.
Keratin
a fibrous protein in dead skin cells (stratified squamous). Present on many animal species. responsible for the skin being waterproof.
Where do all second order synapse to third order? Where do the third orders then extend into?
THALAMUS.
third order extends into the cortex of the brain.
How does a low pH affect the oxygen distribution curve? Same with an increased temperature.
We will see a shift to the left > the oxygen will dissociate at a lower partial pressure. Since we want that oxygen to be deposited faster.
Define Motor Unit
All the Muscle Fibres innervated from one nerve fiber
At some stage in development, all chordates have…
pharyngeal pouches, a notochord, and a dorsal tubular nerve cord
Radial Symmetry
Echinodermata
Monera is different from all other Kingdoms how?
Prokaryotic Cells
Archenteron
The primitive gut that forms during gastrulation in the developing blastula is known as the archenteron. It develops into the digestive tract of an animal.
Long term process of one ecosystem turning into another?
Ecological Succession
What are the two components of the placenta?
It includes a fetal portion (CHORIONIC VILLI) derived from TROPHOBLASTS and a maternal portion (DECIDUA) derived from the uterine ENDOMETRIUM.
what vertebrate lacks an allantois?
Fish.
What is the outcome of the allantois?
development of the umbilical cord.
What is produced after 10 turns of the Calvin Cycle?
20 PGAL
Fixed Action Pattern
complex, coordinated innate behavioural responses from environmental stimuli. NOT a reflex.
Pioneer Organisms
inhabit harsh conditions. Eg. Lichens. Mosses usually follow lichens. THen grasses, then ferns, then birches.
Which type of plants have a dominant gametophyte stage?
Bryophytes.