BIOL 3350 Participation Q's

more saturated

Fish that have adapted to live in colder water are likely to have ____ fatty acid chains in their membrane compared to fish in warm environments 

a hydrophilic head and a hydrophobic tail 

Phospholipids in the cell membrane are composed of

blocks gene transcription 

When DNA methylation occurs in a promoter region, it typically:

Bound to cell membrane 

Which of the following is FALSE about intracellular receptors: 

1. Bound to cell membrane 

2. Act as transcription factors when bound to ligand 

3. They are proteins 

True

True or False: your transcriptome can change within a few hours 

increases, decreases

As temperature increases, diffusion rate ____ and as distance between solutions increases, diffusion rate ___. 

Describe facilitated diffusion:

uses transporter to cross in direction of the concentration gradient 

Elephant, bear, wolf, raccoon, mouse 

Arrange animals from lowest mass-specific metabolic rate to highest: elephant, raccoon, wolf, bear, mouse 

bile salt

____ aids in the digestion of lipids by emulsifying them 

lipids

Energy reserves in the body are stored mainly as: 

microglia

What are cell types are immune cells? 

increase speed of action potential

What is the function of myelin sheaths on the axon? 

• brain

• spinal cord

The peripheral nervous system is made up of the: 

• internal organs

• brain

• spinal cord

metabotrpoic receptors

What facilitates the slowest form of communication at a synapse? 

axon terminals, cell body

 

8. Small-molecule neurotransmitters are synthesized in the ___ while neuropeptides are synthesized in the ___. 

autonomic nervous system

pancreas is controlled by the ___.

somatic nervous system

Skeletal muscle movement is controlled by the: 

sympathetic nervous system

Which uses norepinephrine as a neurotransmitter? 

• sympathetic nervous system

• asympathetic nervous system

air capillaries

Where does gas exchange primarily occur in bird respiratory system?

brain stem

Where is the central pattern generator for human breathing found?

ram ventilation

What strategy relies on forward movement through water to pass oxygen through the gills?

vena cava

Deoxygenated blood enter the heart via:

false

T/F: human myocardium is composed of spongy tissue:

capillary

What blood vessel has the smallest diameter?

retains water

When urine is hyperosmotic to the plasma, the body

decreasing concentration of ions

To reduce osmotic pressure, cells typically respond by:

cytoplasm

What is an intracellular fluid:

blood plasma volume decrease & blood plasma osmotic pressure increases

When body is dehydrated, what occurs:

birds

Which group lacks nephrons with loop of Henle:

proximal tubule

Which is highly permeable to water, even when ADH is low:

molluscs

Which taxa are the kidneys associated with the pericardium:

antidiuresis

Increase in aquaporins in urinary collection ducts result in

longer loops of Henle

Ability to produce hyperosmotic urine is associated with:

release of glucocorticoids

HPA directly controls the

a tropic hormone

ACTH is an example of

enzymatic conversion of cholesterol

steroid hormones are synthesized via:

intrafusal fibers

which of these are innervated by sensory neurons

afferent neurons, efferent neurons

____ bring information to the CNS while ___ bring information away from the CNS

motor responses are not processed in the brain

what is true about flexion reflex?

relies on central pattern generator and uses peripheral sensory feedback

what is true of unmanipulated locust flight?

acting as a transcription coactivator

how does PGC-1alpha facilitate cellular changes in response to exercise?

type IIx (fast glycolytic fibers)

which muscle type of muscle will fatigue fastest?

more muscle than average

an individual with impaired production of myostatin will have

mitochondria

O2 partial pressure within the body will be lowest in:

decrease

higher salinity will ___ gas solubility

B → A

O2 concentration in A is 2.3 mmol/L and the partial pressure is 0.1 atm. B is 0.3 mmol/L and partial pressure is 0.21 atm. Which direction will O2 move

hemocyanin

which respiratory pigment contains copper for binding O2?

each cell contains high proportion of mitochondria

what is FALSE about RBC’s