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PCAT PREP > PCAT BIOLOGY 1 > Flashcards

PCAT BIOLOGY 1 Flashcards

1
Q

The presence of which bacteria is an indiction of human or animal wastes in water supply?

A

E.coli

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2
Q

The Kreb’s cycle is a a characteristic of?

A

cellular respiration

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3
Q

What part of cellular respiration take place at the inner mitochondrial membrane?

A

electron transport chain

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4
Q

A drug designed to enhance the ability of the body to get rid of cancer cells or virus-infected cells would most likely be enhancing the function of

A

Cytotoxic T cells(NK)

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5
Q

What blood vessel has the highest pressure?

A

Arteries

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6
Q

The predominant site of B-lymphocyte production in most mammals is

A

Bone marrow

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7
Q

This class of hormones is produced in both the adrenal cortex and gonad?

A

Steroidal

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8
Q

Stability in an allele is caused by

A

Selection pressure which eliminates extremes of traits

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9
Q

Many of the blood pressure medications currently in use lower blood pressure by ?

A

Dilating blood vessels

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10
Q

In parasitism, the interaction between two organisms?

A

One organism benefits the other

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11
Q

What is filtered by the Kidney?

A

uric acid, creatinine, urea

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12
Q

The Eustachian canal functions to

A

equalize air pressure( between middle ear and pharynx)

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13
Q

The function of dendrites( web-like structures) at the end of a neuron is

A

to increase surface area

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14
Q

The site of glycogenesis

A

the liver

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15
Q

Natural but active immunity is acquired when ________

A

a person has and recovers from a disease

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16
Q

Antibodies transferred from mother to child is an example of ________

A

naturally acquired passive immunity

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17
Q

A person receiving antibodies from a horse is an example of __________

A

artificially acquired passive immunity

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18
Q

a person being injected with an antigen is an example of_________-

A

artificially acquired natural immunity

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19
Q

During embryogenesis, mesoderm gives rise to

A

muscles and reproductive organs

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20
Q

The first phase of mitosis is __________

A

prophase

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21
Q

Failure of chromosomes to separate during cell division leads to__________

A

polyploidy

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22
Q

The function of semicircular canals is _________

A

balance

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23
Q

Unequal concentrations of an ion inside or outside of a cell are maintained by _________

A

active transport

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24
Q

_______ is the release of a substance for use by the organism producing it

A

secreation

25
Q

____________are the most immunologic class of molecules`

A

proteins

26
Q

What are the most numerous blood vessels in the body?

A

Capillaries

27
Q

________ do not have a nucleus

A

bacteria

28
Q

The function of red bone marrow is _________

A

synthesis of red blood cells

29
Q

insertions and deletions are both examples of ________

A

mutations

30
Q

__________ is a small piece of DNA found in bacteria cells

A

plasmids

31
Q

The study of fungi is called ___________

A

mycology

32
Q

A structure produced by some bacteria is very resistant to heat and chemicals is the

A

spore

33
Q

_______ are obligate intracellular parasittes

A

viruses

34
Q

______________ control the growth of bone

A

pitutiary glad

35
Q

_____________ is used for the production of thyroxine

A

iodine

36
Q

Steroid hormones are produced by_______________

A

reproductive glands and adrenal glands

37
Q

Maintaining NA/K balance in the body is the function of the __________

A

kidney

38
Q

The disease botulism blocks the release of ach. The effect of this would be___________

A

loss of signal transmission from nerve to muscle

39
Q

A virus carries genetic information from one bacteria to another in the process of _________

A

transduction

40
Q

The disease Reyes Syndrome is linked with the use oF _______

A

ASPIRIN

41
Q

The binding of ubiquitin usually triggers _________

A

proteosomal degradation of protein

42
Q

In bacteria, the electron transport chain takes place in_________

A

the cell membrane

43
Q

The outer layers of the skin are composed of________

A

striated squamous epithelium

44
Q

In the _______ cycle 2 three carbon molecules are broken down into six CO2 molecules

A

Citric acid cycle

45
Q

Appendicular skeleton

A

arms and legs

46
Q

The highest blood pressure would be present in the_______

A

aorta

47
Q

The term cleavage refers to________

A

an early phase of embryonic development

48
Q

In the united states, 1 in 250 people suffer from hemochromatosis, a common hereditary disease. The disease results in an accumulation of iron in the body. What is a common form of treatment?

A

Blood letting

49
Q

_______ is a trihybrid cross

A

1/16

50
Q

______ is found in prokaryotes and not eukaryotes

A

Pilli

51
Q

In individuals who have the genotype XXX this occurs as a result of _______

A

nondisjunction

52
Q

Certain bacteria take atomospheric nitrogen( N2) and turn it into ammonium( NH3), a process know as

A

nitrogen fixation

53
Q

During the menstrual cycle, production of luteinizing hormone later leads to the production of progesterone. If fertilization does not occur, the rising levels of progesterone will inhibit further production of lutienizing hormone. This is an example of_________

A

negative feedback

54
Q

Edward Jenner developed the idea of _______

A

vacinnes

55
Q

Allergies are caused by

A

an overreaction to harmless materials

56
Q

Mitosis results in_________

A

two cells with the same number of chromosomes as the parent cells

57
Q

___________ are responsible for the synthesis of protein?

A

ribsomes

58
Q

A mushroom is __________

A

a reproductive structure

PCAT PREP (3 decks)

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