Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Bio 2401 04 > Exam 2 > Flashcards

Exam 2 Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

Plasma membrane proteins make up 50% of the mass of the plasma membrane and determine its function.Which is not a function of the plasma membrane proteins?

A)acting as enzymes
B)acting as receptors
C)transporting substance
D)providing structural support
E)acting in cell to cell recognition 
F)linking cells together
G)all are functions
A

G

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which cell junction is correctly matched?
A)Desmond ones to communicating junctions
B)tight junctions to impermeable junctions
C)gap junctions to anchoring junctions
D)all are correctly matched
E)none are correctly matched

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q 
Which cell junctions electrically couple certain organs such as the heart and allow them to behave as a functional system?
A)desmosomes
B)tight junctions
C)gap junctions
D)a and b 
E)none of the above
A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q 
Which membrane transport system does not require the cell to use ATP?
A)primary active transport
B)secondary active transport
C)exocytosis
D)osmosis
E)phagocytosis 
F)pinocytosis
A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q 
Which factors will not increase the rate of diffusion?
A)increase in concentration difference
B)increase in distance
C)increase in temperature
D)decrease in particle size
E)none of the above
A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which passive transport processes are saturable?
A)channel mediated facilitated diffusion
B)osmosis
C)carrier mediated facilitated diffusion
D)simple diffusion
E)a and c

A

E

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

If osmolarity of a solution increases, osmotic pressure increases,pulling pressure increases
True or false

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

When the hydrostatic pressure is equal to the osmotic pressure, there is no movement of water
True or false

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which is not an example of simple diffusion?
A)popcorn odor permeating a room
B)gas exchange in our lungs
C)a white blood cell engulfing our bacterium
D)a dissolving sugar cube
E)all are examples

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

When the movement of Na+ ions down their concentration gradient drives the transport of other substances across the cell membrane it is called

A

Secondary active transport

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Cells that store large quantities of chemicals to be released do so in structures called

A

Vesicles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

A red blood cell will crenate (shrink) when placed in what type of solution?

A

Hypertonic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Hemolysis will occur in a red blood cell when placed into what type of solution?

A

Hypotonic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which statement is false regarding secondary active transport?
A)requires energy indirectly from ionic gradients
B)pluses potential energy from ionic gradients
C)a coupled system
D)uses ATP directly

A

It uses ATP directly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The concentration of k+ is 28x higher inside the cell than outside the cell. If a K+ channel was opened on the plasma membrane, in which direction will K+ flow?would the plasma membrane be more positive or negative?

A

Out of the cell: negative

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The sodium potassium pump (Na and K)

A

Pumps Na+ out of and K+ into the cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Exocytosis is transport _____of the cell, while endocytosis is _____the cell.

A

Out:in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Phagocytosis is _____, while pinocytosis is ______

A

Cell eating; cell drinking

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

A voltage or membrane potential exists only at the plasma membrane

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Resting membrane potential is largely determined by K+

True or false

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is a ligand

A

Chemical messenger
1sr messenger
Molecule that binds receptor
Hormone or neurotransmitter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is the second messenger?

A

An intracellular chemical signal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Based on your knowledge of the cell membranes chemistry, where would steroid hormones most likely interact with their target cell

A

Inside the target cells cytoplasm( or nucleus)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

During which stage of the cells life cycle is DNA replicated

A

S phase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Mitosis is _____, while cytokinesis is _____

A

Nuclear division;cytoplasmic division

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is the correct order of events during DNA replication?

A

Uncoiling;separation;assembly;restoration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What is the function of DNA polymerase during DNA replication

A

Adds complimentary nucleotides to the DNA strand

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

In which stage of mitosis do the sister chromatids separate to form chromosomes

A

Anaphase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

DNA is ____into mRNA , whereas mRNA is ____into protein

A

Transcribed; translated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Complimentary bind DNA to DNA: TAG

A

ATC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

DNA TO RNA : TAG

A

AUC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

RNA TO RNA: AUC

A

UAG

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

In correct order, what are the phases of transcription? Where does it occur?

A

Initiation;elongation;termination;nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

What is the function of tRNA

A

It brings amino acids to ribosomes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

During translation of mRNA, in which sub step of elongation are peptide bonds formed

A

Peptide bond formation

36
Q

Which RNA types are involved in translation

A

mRNA
rRNA
tRNA

37
Q

Which is a function of epithelial tissues

A

Protection
Absorption
Secretion
Filtration

38
Q

Epithelial cells exhibit polarity. This means that they have ____surface known as the ____, surface which is known as the ____.

A

Apical,free side; basal,secure side

39
Q

With which portion of an epithelial cell in the stomach would good be in contact with?

A

Apical surface

40
Q

All epithelial tissues have two names. The first name is based on __and the second is based on

A

Number of layers ; cell shape

41
Q

Simple squamous epithelial tissues functions in___.

A

Diffusion
Secretion
Filtration

42
Q

Where is simple cuboidal epithelium found?

A

Kidney tubules

43
Q

Where are non ciliated epithelial cells that function in secretion and absorption found?

A

Digestive tract

44
Q

What is the function of stratified squamous epithelium? Name a location of the nonkeratinized form.

A

Protection: Mouth, esophagus, anus, or vagina

45
Q

The major distinction between endocrine glands and experimental glands in that endocrine glands secrete their product into___.

A

The blood

46
Q

Which are mature resident cells?

A

Chondrocytes

47
Q

Which fiber type prevents stretching and tearing?

A

Collagen

48
Q

Connective tissue proper is divided into two subclasses, loose and dense connective tissue. What does this refer to?

A

Density of fibers

49
Q

You would expect to find ___ fibers in areas that undergo a lot of stretch and rebound

A

Elastic

50
Q

Which of the following types of cartilage is compressible and resists tension the best?

A

Fibrocartilage

51
Q 
Which is not correct?
Smooth muscle; involuntary 
Cardiac muscles; striated
Cardiac muscles; voluntary
Skeletal muscles; striated
A

Cardiac muscles; voluntary

52
Q

Which type of connective tissue stores fat and synthesizes blood cells?

A

Osseous tissue

53
Q 
Which relationship between a tissue and it’s general function is NOT correct?
Nervous; control
Muscle; movement
Connective;support
Epithelial; digestion
A

Epithelial; digestion

54
Q

Which is better for diffusion and filtration occur?

A

Simple squamous

55
Q

Which of the following specialized terms reflects the epithelial tissue found lining the inside of blood and lymph vessels?

A

Endothelium

56
Q

Which of the following glands are holocrine glands ?

A

Sebaceous glands

57
Q

Which connective tissue generally takes the most time to recover from injury

A

Cartilage

58
Q

What is a logical sequence of events in wound healing

A

Inflammation
Organization
Granulation tissue deposit
Regeneration

59
Q

Which is not a cardinal sign of inflammation

A

Hemolysis

60
Q

The excitable cells of the nervous system are called

A

Neurons

61
Q

Smooth muscle shell for from sheets

True or false

A

True

62
Q

Epithelial membranes are defined as an epithelium bound to an underlying connective tissue proper. The epithelium is a cutaneous membrane is ____ , while the underlying connective tissue proper_____.

A

Keratinized stratified squamous epithelium; dense irregular connective tissue

63
Q

Which is all area in the body exposed to the external environment would be composed of which tissue type

A

Epithelial

64
Q

Which type of tissue is the most abundant and widely distributed

A

Connective

65
Q

Why is blood classified as a connective tissue

A

It developed from mesenchyme

66
Q

Which cells are spindle shaped

A

Smooth muscle

67
Q

Which type of membrane is driest

A

Cutaneous membrane

68
Q

Which tissue underlies most of the epithelia of the body

A

Areolar connective tissue

69
Q

If a muscular exocrine gland has an unbranched duct and the secretory cells form sacs, it is classified as ____

A

Simple alveolar

70
Q

A patient taking a drug that inhibits cell division would expect which latter of the epidermis to be affected first ?

A

Stratum basale

71
Q

Why does cell appearance change drastically in the stratum granulosum

A

Nuclei and organelles begin to disintegrate

72
Q

Which structures in the papillary layer of the dermis are involved in discrimination touch

A

Meissners corpuscles

73
Q

What type of fibers form cleavage lines in the skin

A

Collagen

74
Q

What are striae

A

Dermal tears

75
Q

Which is not involved in producing skin color

A

Amount of keratin produced

76
Q

Which layer of the epidermis is not present in the skin

A

Stratum lucidum

77
Q

The epidermis provides a physical barrier due largely to the presence of ____.

A

Keratin

78
Q

The epidermis of the skin is nourished via_____present in the papillary layer of the dermis

A

Sap I’ll set loops

79
Q

Cell junctions are important in the skin ____prevent keratinocytes from ___ while _____reduce ____.

A

Desmosomes ; tearing ; tight junctions ; water loss

80
Q

While studying you get a paper cut. It is painful but it doesn’t bleed. Which layer has the paper penetrated

A

Epidermis

81
Q

Which alteration in skin color may indicate a liver disorder

A

Jaundice

82
Q

Regarding the dermis , the papillary layer consists of ___ while the reticular layer consists of ____

A

Areolar connective tissue; dense irregular connective tissue

83
Q

Regarding the epidermis , keratinized begins in the ___ and it is complete in the ___

A

Stratum granulosum; stratum corneum

84
Q

Which of the following skin colors may indicate anemia

A

Pallor

85
Q

Which three pigments contribute to skin color?

A

Carotene , melanin, hemoglobin

86
Q

The principal role of melanin is to ____

A

A shield the nucleus from damage by ultraviolet radiation

Bio 2401 04 (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions