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q1 Flashcards

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Biology 101 flashcards
1
Q

A hypothesis is a(n) ________________.

A

Tentative answer to a question

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2
Q

What is biology?

A

the scientific study of life

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3
Q

Which of the following is NOT a property of life?

A

Populations of organisms rarely change over time.

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4
Q

Which of the following structures can perform all the activities required for life?

A

cells

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5
Q

Relative to prokaryotic cells, eukaryotic cells are usually ________.

A

larger and more complex

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6
Q

The DNA of a eukaryotic cell is found within the ________.

A

nucleus

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7
Q

Which domain(s) consist(s) of prokaryotic cells?

A

Bacteria and Archaea

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8
Q

Which of the following is a producer?

A

oak tree

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9
Q

Humans are __________.

A

consumers

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10
Q

Science is _________________.

A

the inquiry-based effort to describe and explain nature

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11
Q

How do hypotheses differ from theories?

A

Theories are more comprehensive than hypotheses.

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12
Q

Which of the following statements about the domain Bacteria is true?

A

All bacteria lack a nucleus.

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13
Q

An atom’s ________ are found in its nucleus.

A

neutrons and protons

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14
Q

The lower the pH of a solution, the ________.

A

more acidic the solution

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15
Q

Which of the following is an example of a polysaccharide?

A

sucrose

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16
Q

What name is given to bonds that involve the sharing of electrons?

A

covalent

17
Q

Sweating cools your body by ________.

A

evaporative cooling

18
Q

Adjacent water molecules are joined by ________ bonds.

A

hydrogen

19
Q

Proteins are polymers constructed from __________ monomers.

A

fatty acid

20
Q

Human body cells are approximately ________ water.

A

70–95%

21
Q

The tendency of molecules of the same kind to stick together is called ________.

A

cohesion

22
Q

As water freezes, ________.

A

its molecules move farther apart

23
Q

Sugar dissolves when stirred into water. The sugar is the ________, the water is the ________, and the sweetened water is the ________.

A

solute… solvent… solution

24
Q

Relative to a pH of 6, a pH of 4 has a ________.

A

100 times higher H+concentration

25
Q

The role of a control in an experiment is to

A

provide a basis of comparison to the experimental group.

26
Q

Organisms belonging to the kingdom Plantae

A

are photosynthetic.

bio ex 1 (2 decks)

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