Biology 1720.001 Test 1

1.

1 point

Regulators generally have a higher internal body temperature variation than conformers

false

true

2.

1 point

Inhibitory PSPs can cause the voltage in the cell to drop below the normal resting potential

True

False

3.

1 point

a positive feedback loop is one in which the control mechanism

does not effect the stimulus

inhibits or dampens the stimulus

amplifies the stimulus

4.

1 point

Osmosis is

the diffusion of ATP into the cell

the diffusion of water molecules up their concentration gradient

the diffusion of water molecules down their concentration gradient

the diffusion of ATP out of the cell

5.

1 point

Which of the following are functions of epithelial tissue?

covers the body and lines the body cavities

regulate movement of materials in and out of the body

protection from the environment

all of the above

6.

1 point

Ectothermic organisms are conformers

True

False

7.

1 point

Endothermic organisms are thermoregulators

True

False

8.

1 point

A negative feed back loop is one in which the control mechanism

does not effect the stimulus

inhibits or dampens the stimulus

amplifies rather than reduces the stimulus

9.

1 point

True or false: Blood is not a type of tissues

false

true

10.

1 point

Most fish, amphibians, and reptiles are

ecotherms

endotherms

11.

1 point

The two types of nervous tissue cells are:

neurons and synapses

neurons and axons

neurons and glial cells

neurons and action potentials

12.

1 point

the efferent segment of the nervous system is the motor output

True

False

13.

1 point

Which of the following is an example of bulk flow?

diffusion across a semipermeable membrane

the blood stream

none of the above

diffusion across a non-permeable membrane

14.

1 point

For every 3 sodium molecules pumped out of the cell, there are _______ potassium molecules moved into the cell

2

4

3

1

15.

1 point

Which of the following is an example of convergent evolution?

none of the above

a sugar glider in Australia having similar "wings" to a flying squirrel in North America

A cobra and a python both having no legs

A North American crow having similar wings to a North American swallow

16.

1 point

The basolateral surface of the eithelium:

faces external environment

aides in the digestion of fatty acids

connects to other tissues

faces internal environment

17.

1 point

Surface area is a x^3 relationship, while volume is a x^2. This is why as volume increases at a slower rate than surface area

True

False

18.

1 point

Define cladistics:

method for determining patriarchal relationships

method for determining matriarchal relationships

method for determining evolutionary relationships (phylogenies) between groups of organisms

method for obtaining observations

19.

1 point

Ligand gates channels are

ion channels that require ATP to move molecules

ion channels that are affected by the relative voltage of the cell

chemically gated ion channels

ion channels that require ADP to move molecules

20.

1 point

acclimatization is the gradual adjustment to changes in the external environment

True

False

21.

1 point

The apical surface of the epithelium is:

the side that has no purpose

the side that connects to other tissues

the side that faces internal or external tissues

the side that sends electrical signals through the body

22.

1 point

Nerve to nerve, or nerve to muscle signaling is predominately done by

Chemical signaling

Electrical signaling

23.

1 point

There is a (typically) a greater concentration of sodium ions

inside the cell

outside the cell

the concentrations are the same inside and outside the cell

24.

1 point

Potassium ions have a tendency to

go down their concentration gradient, leaving the cell

move up their concentration gradient, leaving the cell

move up their concentration gradient, entering the cell

go down their concentration gradient, entering the cell

25.

1 point

Define natural selection

a process by which organisms reproduce less successfully, but still manage to pass on their traits

a process by which organisms enter and exit an environment

a process by which individuals with certain traits tend to survive and reproduce at higher rates than other individuals because of those traits

none of the above

26.

1 point

True or False: an adaptation is an environmentally advantageous trait resulting from natural selection acting over many generations

true

false

27.

1 point

True or false: a hypothesis is the proposed explanation for a narrow set of phenomena, based on prior experience, background knowledge, preliminary observations and logic.

true

false

28.

1 point

Voltage gated ion channels are typically found where on a nervous tissue cell

in the conductive zone ( the trigger zone and axon)

inside the cell

the input zone (the soma and dendrites)

29.

1 point

Cardiac muscle tissue is

under involuntary control

is found in the stomach lining

under voluntary control

is found in all the major organs of the human body

30.

1 point

A seal, penguin, and tuna all share a similar fusiform body shape (meaning an aerodynamic body shape that aids in swimming), this trait is

anamorph

none of the above

apomorphic

pleisomorphic

31.

1 point

Which of the following is an example of a type of tissues?

epithelial tissues

connective tissues

muscle tissue

nervous tissue

all of the above

32.

1 point

What is the approximate resting membrane potential of a nervous cell?

-70 millivolts

70 millivolts

33.

1 point

Conformers generally require more calories than a similar sized regulator, true or false

false

true

34.

1 point

Which of the following is the correct form of Fick's Law of Diffusion, where
J = flux (moles/time)
D = diffusion coefficient
A = area for diffusion
DC= concentration difference
DX = Distance for diffusion

J = D/ A * DX * DC

J = D * A/ DX * DC

J = D * A *DX/DC

J = D * A * DC/DX

35.

1 point

The central nervous system is the site of integration

True

False

36.

1 point

Which of the following goes in the correct order from most broad, to least broad:

domain, kingdom, order, phylum, class, family, genus, species

species, genus, family, order, class, phylum, kingdom, domain

domain, kingdom, phlyum order, class, genus, family, species

domain, kingdom, phylum, class, order, family, genus, species

37.

1 point

Action potentials have the potential to only half shoot off, ie they are "all or nothing"

True

False

38.

1 point

Smooth muscle tissue is

under involuntary control

under voluntary control

39.

1 point

The types of heat transfer are:

radiation

convection

conduction

evaporation

all of the above

40.

1 point

Torpor is a state of increased metabolic rate, that allows body temperature to increase.

True

False

41.

1 point

A clade is a grouping that includes:

common ancestor

all the descendants (living and extinct)

all of the above

none of the above

42.

1 point

If an excitatory post-synaptic potential is insufficient in causing an action potential, it can be coupled with multiple excitatory PSP's so that collectively they bring the voltage above the threshold

True

False

43.

1 point

When your body temperature deregulates from homeostasis, your body reacts by dilating the blood vessels or by vasoconstriction of the blood vessels until homeostasis is returned, this type of a response is an example of

negative feed back

positive feedback

44.

1 point

The Flux is equal to...

driving force divided by the resistance to flux

resistance to flux divided by the driving force

resistance to flux times the driving force

flux coefficient times the driving force divided by the resistance to flux

45.

1 point

What would be the flux if:

Diffusion coefficient = 12
Area for diffusion = 15
DC = 0
DX = 3

60

30

0

540

46.

1 point

The afferent segment of the nervous system is the motor output

True

False

47.

1 point

Which of the following goes in the correct order, from most complex, to least comples

organism, organelle, molecule, atom, organ system

organ, organ system, organelle, organism

atoms, molecules, organelles, cells, tissues, organ, organ system, organism

organism, organ system, organ, tissues, cells, organelles, molecules, atoms

48.

1 point

Acclimation is the gradual adjustment to changes in the external environment

True

False

49.

1 point

Molecules want to diffuse

linerally

molecules cannot diffuse due to their size

from an area of high concentration to an area of low concentration

from an area of low concentration to an area of high concentration

50.

1 point

The sodium potassium pump is called an atpase because it is a form of active transport, that requires the use of atp to move molecules up their concentration gradient

True

False