Biology Final ;) Flashcards
What correctly describes the normal movement for Na+
Membrane potential favors Na+ in, and concentration gradient also favors it going in
T/F: The nephrons in the kidney are unable to process urine above 300 mOsm
F
Feeding by one insect, a plant is able to build a better defensive mechanism for when later herbivores tries to feed it on it. Because the later species does not affect the earlier one, this relationship is
Commensalism
Fruit flies are chosen in a lab. The slowest developing ones are chosen as parents. The time it takes for the fruit flies to develop is long, but their body size is bigger. The time is _______ while the body ________
Directional selection;Stabilizing selection
What would happen if the skeletal muscle pump stopped working?
The Blood would not pump back to the heart
The cross bridge in the muscle causes what two proteins to come into contact?
myosin and actin
Where would you not find a one way valve?
Between left and right ventricle
What was the example used in class for character displacement?
Galapagos Finches
The one whose activity is altered in order to compensate to bring parameter back into its normal range
Effector
The graph of natural selection does not show which of the traits that’s required for natural selection?
Underlying genetic variability
A mouse that can’t produce leptin will be _______ than a mouse that can
Eat more weigh more
Semelparity means
Reproduce only once
Correct order of what happens in the kidney or whatever
Filtration, reabsorption, secretion, excretion
A long colon in a koala will enable it to
Allow for more absorption of water
The two functions of the gills
Respiration and osmoregulation
Which hormone stimulates follicles?
FSH
Evidence that crocodiles are paraphyletic is that they’re more related to
Birds
The organ of corti
Is for auditory
Osmoconformers live in
Sea water
What is responsible for pushing filtration from glomerulus and into the Bowman’s capsule?
I put blood pressure
____ receptors keep sending signal to CNS as long as stimulus is present
Tonic
Which period lasted 250 million - 65 million
Mesozoic
Which one is involved in IPSP
Potassium
What is an advantage of electrical synapse?
It’s fast
What is the semicircular canal responsible for?
Equilibrium
Know everything the antibodies do
They find and destroy viruses by creating antigen
T/F AIDS is deadly because it can specifically kill Helper T cells
T
T/F In mammal reproduction, it’s chromosomal and males have the heterogenetic (XY chromosome)
T
Oviparity is the development of inside an egg it’s also called
Lecithotrophy
T/F only insects exhibit temperature dependent sex determination
F
Which is not a characteristic of Lucy?
Fully bipedal
Know the definition of sympatric speciation
Some interruptions of gene flow occur without geographic separation.
Know the definition of homology
the state of having the same or similar relation, relative position, or structure.
Which percentage closely represents the amount of species that have been extinct
100
Why do black headed gulls move their white egg shells
To decrease crows eating the eggs
Which gene affects levels of aggression in humans
Monoamide oxidase gene
T/F: The two things needed for ions to move across the gradient is membrane (charge) potential and concentration gradient
T
Which cells release antibodies?
Plasma
A well-trained athlete has a resting heart rate of only 60 beats/minutes, a stroke volume of 100 mL and respiratory rate of 20 breaths per minute. What is this person’s cardiac output?
6000 mL
An osmoconformer must live in which of the following environments?
Sea water
T/F : To mount an effective primary acquired immune response after the first exposure to an antigen may take as long as 1-2 weeks.
T
T/F : Constriction of the precapillary sphincters would cause the majority of blood to bypass the capillaries and enter the metarteriole.
True
Some nutrients are considered “essential” in the diets of certain animals because
They cannot be manufactured by the organism
What appears to be the biggest cause of the Permo-Triassic mass extinction?
Vulcanism
The closest relative(s) of the tuna is (are):
It’s a tie between the salamander, turtle, and leopard.
Moon rocks, chondritic meteors, and lead-isotope ratios all indicate that the age of our solar system is about:
4.6 billion years
Which organism is an example of human-caused extinction of a widespread abundant species?
Passenger pigeon
When it hears the squeaking of a patio door, a cat rushes to the spot where it usually receives food. This is most likely an example of:
Classical conditioning
Genetic drift is best described as
Changes in allele frequencies due to sampling error
One feature that distinguishes imprinting from other forms of learning is that
It occurs during a critical period
T/F: Melatonin is the hormone responsible for the seasonal timing of singing in the male zebra finch
True
The loss of responsiveness to a repetitive stimulus that is neither beneficial not harmful is called
Habituation
A single allelic substitution at the vasopressin-receptor gene in meadow voles affected which behavior?
Pair bonding
T/F: In theory, heritability can only range from zero to one
True
Trial-and-error learning is also
Operant conditioning
A gene in Hardy-Weinberg equilibrium has only two alleles, A and a, and one is four times more common than the other. What is the total expected percentage of the population that will be heterozygotes?
32
Know the definition of intersexual selection
Ex: female choice
Know the definition of intersexual selection
Ex: female choice
When did we hybridize with neanderthals
Hybridizations occurred as recently as 50-60 thousand
When did we migrate to the America
20 thousand years ago
