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PCAT PREP > PCAT BIOLOGY 2 > Flashcards

PCAT BIOLOGY 2 Flashcards

1
Q

_________ are tiny particles made up only of protein.Some are associated with Mad Cow Disease.

A

Prions

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2
Q

_____ fats have C-C double covalent bonds as well as less than the maximum amount of hydrogen bonds

A

Polyunsaturated

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3
Q

Yellow fever and malaria are transmitted by________

A

mosquitoes

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4
Q

Differentiation

A

When a cell goes from general to specialized

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5
Q

The primary function of semicircular canals of the ear is ________

A

balance

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6
Q

Stem cells are considered valuable because___________

A

they can develop into any tissue or cell type in the body

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7
Q

Which of the following primary germ layers develops into muscle?

A

Mesoderms

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8
Q

The major function of bacteria in an ecosystem is________

A

Decomposers

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9
Q

____________ a bacterium associated with diseases of the gastrointestinal tract

A

Salmonella

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10
Q

The system in the body that secretes a fluid that effects a target organ is_______

A

endocrine system

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11
Q

What is the term for a mis-shaped cornea?

A

astigmatism

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12
Q

In the dark reactions of photosynthesis, ________ is fixed

A

carbon dixoxide

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13
Q

In which of these phases of the growth curve would you see the most growth by bacteria?

A

Log

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14
Q

________ are formed by or during translation

A

Protein ( polypeptides)

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15
Q

_________ maintains the shape of the cell and may be involved with locomotion

A

Cytoskeleton

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16
Q

_______ has the same function as root hairs

A

mycorrhizae

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17
Q

The sphincter between the duodenum and the stomachis_________

A

Pyloric

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18
Q

A,B, and 0 are different ________

A

alleles on chromosome 9

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19
Q

______ eat or digest food externally while they grow onit

A

fungi

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20
Q

How can Tay-Sachs disease be treated?

A

Gene therapy, inserting a good copy of the gene

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21
Q

White blood cells are produced by________

A

bone marrow

22
Q

__________ regulates blood pressure

A

aldosterone

23
Q

Striated muscle

A

skeletal and cardiac

24
Q

A_____- infection is most likely to lead to transformation( viral infection)

A

persistent

25
Q

During mitosis chromosomes are joined by ________

A

Centromere

26
Q

The effect of cocaine on nerve cells is to________

A

block reabsorption of norepinephrine and other neurotransmitters at the synapse`

27
Q

The reason that siblings share some traits but not others is _______-

A

independent assortment

28
Q

Starting in the early 1900s, cases of Salmonella typhi declined in the US after introduction of chlorination of public water supplies which ________

A

disinfects water , killing pathogens

29
Q

The highest oxygen levels would be found in ________

A

Pulmonary vein

30
Q

Menopause results in a decrease in _______ and _______

A

progesterone and estrogen

31
Q

Gene movement with a chromosome occurs as a result of

A

transposons

32
Q

_______ can not be digested by humans

A

Cellulose

33
Q

The bacteria Clostridium is _______

A

Anaerobic

34
Q

________ catalyzes ATP to Adp

A

Hexokinase

35
Q

Viruses use_________ to attach to host cells

A

proteins

36
Q

In embryology when a cell goes from general to specialized, it is called _________

A

differentation

37
Q

A virus with single-stranded DNA that is used to produce DNA would be a

A

Retrovirus

38
Q

A person missing their gut bacteria or microbiota would be deficient in which vitamins

A

B12, K, B1

39
Q

What hormone is secreted by the posterior pituitary gland?

A

Oxytocin

40
Q

DNA replication takes places in this phase?

A

S phase

41
Q

Describe DNA from is loosest structure to its most tightly wound structure

A

DNA-NUCLEOSOME-30 NM FIBER- CHROMOSOME

42
Q

________ break bone down so minerals can be reabsorbed from the bloodstream

A

Osteoblasts

43
Q

The valve which regulates food flow from the ______ stomach to intestines is

A

Pyloric

44
Q

In SDS electrophoresis smaller molecules move towards the _______electrode faster than the larger

A

Positive

45
Q

Typically,certain plants that have bacteria living in their roots in a symbiotic relationship are found in _________

A

nutrient-poor soil

46
Q

The base ‘U’ is part of ______ structure

A

RNA

47
Q

DNA replication is semiconserative, meaning that_______

A

each strand is a template for new strand

48
Q

Respiratory rate is controlled by_______

A

Levels of CO2 in the bloodstream

49
Q

SSRI’s treat _____, ______, and ______

A

Anxiety, depression,and personality disoders

50
Q

_______ is a skeletal muscle protein

A

actin

51
Q

______ is a disease caused by consuming uncooked pork

A

Trichnella

52
Q

A drug that blocks protein synthesis in the target organism. There it ________

A

blocks ribosome function

PCAT PREP (3 decks)

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