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Bio 110 > Exam 1 > Flashcards

Exam 1 Flashcards

Ch. 1, 2, & 3

1
Q

The smallest unit of life that can survive and reproduce on its own is:

A

The cell

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2
Q

Producers obtain energy from:

A

The sun

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3
Q

ability of organism to contain a constant internal environment is called

A

homeostasis

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4
Q

Which domains are made of organisms w/o nuclei?

A

Archea and Bacteria

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5
Q

eukaryotes that range from single cells like amoeba to multicells seaweeds are members of the kingdom:

A

Protista

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6
Q

A scientific name consists of the following:

A

Genus and specific epithet

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7
Q

Science only addresses that which is:

A

Observable

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8
Q

A testable explanation for a natural phenomenon is an:

A

Hypothesis

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9
Q

Experimental result that is statistical significant is:

A

unlikely to occur by chance alone

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10
Q

Fundamental building blocks of all matter

A

Atoms

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11
Q

Negative subatomic particles is:

A

Electron

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12
Q

Isotopes of the same element differ in the number of:

A

neutrons

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13
Q

In the shell model, how many electrons can the second shell hold?

A

8

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14
Q

What is form when an atom loses or gains an electron?

A

an Ion

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15
Q

What type of bond is formed when atoms share a pair of electrons?

A

covalent

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16
Q

what is a Hydrogen bond?

A

a week bond, attraction that forms bw an electronegative atom and a hydrogen atom taking part in a separate covalent bond

17
Q

Why is water important to living organisms?

A

bc a. its cohesive properties

b. temperatures stabilizing properties
c. liquid at room temperature
d. it has capacity to dissolve other substances

18
Q

from one to ten on PH scale, which is most acidic?

A

1

19
Q

cellular Ph is kept near a value of seven due to:

A

the action of buffers

20
Q

The atom diagnostically associated with organic compounds is:

A

Carbon

21
Q

An OH group is an:

A

Hydroxyl group

22
Q

The formation of large molecules from small subunits is known as what kind of reaction?

A

Condensation

23
Q

Which reaction results of breakdown of macromolecule into simpler substances?

A

Hydrolysis

24
Q

Which is a building block of carbohydrates?

A

monosaccharide

25
Q

What do functional groups do when bonded to an organic molecule?

A

They impart specific chemical properties such as polarity or acidity to that molecule.

26
Q

Samples of lipids are:

A

steroids, triglycerides, oils and waxes

27
Q

Cell membranes are characterized by the presence of:

A

Phospholipids

28
Q

What kind of building blocks are proteins are made of:

A

Amino acids building blocks

29
Q

What type of bonds links proteins together?

A

Peptide bonds

30
Q

The primary structure of a protein is the

A

The sequence of amino acids

31
Q

Proteins may function as:

A

structural units, enzymes, storage molecules, and transport molecules

32
Q

What is the study of life called:

A

Biology

Bio 110 (6 decks)

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