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Human Biology > Chem and Cell quiz > Flashcards

Chem and Cell quiz Flashcards

1
Q

Which of the following is a relatively loose type of cell junction, which would anchor adjacent cells together and prevent cells from being pulled apart

A

Desmosomes

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2
Q

The membrane connections that prevent the leaking of fluid between cells are called

A

tight junctions

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3
Q

The ______ is a network of proteins that forms an internal framework for the cell

A

Cytoskeleton

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4
Q

the passive process that involves the movement of water through aquaporins is ________?

A

Osmosis

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5
Q

the nucleotides of DNA join in a complementary way n which adenine pairs with _______ and cytosine pairs with _______

A

Thymine; Guanine

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6
Q

The period of cell cycle when the cell grows and performs its metabolic activities is _________?

A

Interphase

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7
Q

In cell division, the term that refers to division o the cytoplasm is _________.

A

cytokinesis

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8
Q

the two step of protein synthesis, in the correct order are _______ & ______

A

Transcription ; Translation

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9
Q

The cell shown has been placed into a(n) _________ Solution /Users/dantondye/Downloads/20161004_195258.jpg

A

hypotonic

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10
Q

The structural and functional unit of all living things is the

A

cell

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11
Q

which of the following is not a structural component of the nucleus

  • Nuclear pores
  • nuclear envelope
  • golgi apparatus
  • nucleolus
  • chromatin
A

Golgi apparatus

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12
Q

nutrients and ions can pass directly from cell to cell through special membrane junctions known as

A

Gap junctions

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13
Q

which of the following is not considered a cytoplasmic organelle?

A

Flagellum

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14
Q

passive process that move substances across membrane

Require no ATP
utilize ATP
include exocytosis and endocytosis
employ protein pumps

A

require no atp

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15
Q

what is required for diffusion occur

A

Concentration gradient

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16
Q

the correct order of phases of the mitosis is

A

Prophase, Metaphase, anaphase, telophase

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17
Q

the process of transcription does what?

A

translates nucleic acids into amino acids

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18
Q

the two major cases of protein synthesis are

A

transcription and traslation

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19
Q

looking into a microscope, you notice cells swimming, propelled by a log tail. what cell structure must these cells have in order to be mobile

A

flagella

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20
Q

a cancer drug interferes with the development of mitotic spindle fibers during cell division. which phase is directly affeced

A

prophase

21
Q

anything that has mass and takes up space is considered to be

A

matter

22
Q

atoms that have lost or gained electrons are known as

A

ions

23
Q

compounds that contain carbon-hydrogen bonding are collectively termed__________ compounds?

A

organic

24
Q

an atoms outermost shell is known as its ______ shell.

A

valence

25
Q

proteins are synthesized form _____ during synthesis reactions

A

amino acids

26
Q

Unsaturated fatty acid chains contain one or more ______ bonds between carbon atoms.

A

double

27
Q

an atom of magnesium has lost two electrons. it is known as a(n) _____.

A

cation

28
Q

which of the following leads to an increase in the rate of a chemical reaction

A

increased temperature

29
Q

atomic mass is equivalent to the number of ______ in an atom?

A

protons and neutrons

30
Q

an atom with an atomic number of 14 will have ______ electrons in its valence shell.

A

4

31
Q

an atom hs 6 protons 8 neutrons, and 6 electrons. its atomic mass is

A

14

32
Q

isotopes have different numbers of ______; thus they also have different _______.

A

neutrons; atomic masses

33
Q

what is the atomic number of an atom that has 6 protons, 6 neutrons and 6 electorns

A

6

34
Q

what type of bond results when electrons are completely transferred from one atom to another?

A

ionic bond

35
Q

which polysaccharide is famed of linked glucose molecules and stored in animal tissue.

A

glycogen

36
Q

Enzymes increase the rate of _______ by at least a ________.

A

chemical reactions; millionfold

37
Q

enyzymes are

A

biological catalyst

38
Q

which of the following statements about RNA is true?

  • RNA is a double helix
  • RNA is found only in the nucleus
  • RNA is single stranded
  • RNA contains deoxyribose
A

RNA is single stranded

39
Q

two or more polypeptides chains combine to form a complex structure called a ______.

A

Secondary structure

40
Q

Contains chromosomes and genetic information

A

Nucleus

41
Q

Sight of protein synthesis

A

Ribosome

42
Q

Contains enzymes for digestion within cell

A

lysosome

43
Q

Modifies & separates proteins

A

Golgi body

44
Q

aerobic metabolism and production of ATP

A

Mitochondria

45
Q

form spindle fibers

A

centrioles

46
Q

Site of synthesis of carbohydrate ad lipid

A

Smooth Endoplasmic Reticulum

47
Q

Helps w/ structure & allowing nutrients & water to pass

A

cell membrane

48
Q

synthesis of ribosomes

A

nucleoulus

49
Q

Proteins are bound in vesicles for transport to the Golgi apparatus and other sites. External face synthesizes phospholipids.

A

Rough E.R.

Human Biology (4 decks)

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