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BIO 204 > Midterm > Flashcards

Midterm Flashcards

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Biology 101 flashcards
1
Q

Calibration of the Spectrophotomet er

A

-Fill the Blank tube with solvent only and wipe with a kimwipe.

-Warm up the Spectrophotometer at least 10 minutes.

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2
Q

The prefix “milli” represents which multiplication factor .

A

10-3

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3
Q

Tropical plants evolved drip tips to adapt to this environmental stressor:

A

Excessive rainfall

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4
Q

The FACE project sponsored by Brookhaven National Laboratories serves to aid scientists in the study of the impact of _______ levels on plants.

A

Carbon dioxide

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5
Q

What is the approximate diameter of a white oak tree with a circumference of 315 cm?

A

100 cm

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6
Q

What are features of a scientific hypotheses?

A

They can be tested by observational analysis.
They can be tested by experimentation.
They make predictions.
They are based on observations.

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7
Q

A scientist measures the “clutch size” or number of offspring for a given species of spiders. What type of variable is “clutch size?”

A

Discrete

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8
Q

Team Leader Roles

A

Manage Time, Tasks, and Responsibilities

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9
Q

Analyst Roles

A

Analyze data: stats, tables, graphs, etc. Improve Group Interaction and Performance Prepare an SII

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10
Q

Recorder Roles

A

Record Lab Data and Observations, Spokesperson

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11
Q

Technician Roles

A

Teach Lab Procedures and Equipment safety and use

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12
Q

Shoot System

A

Consists of stems and leaves. Location of photosynthesis.

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13
Q

Root System

A

Anchors the plane and provides water and nutrients for the shoot system

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14
Q

Areole

A

Modified lateral shoot and structure that contains spines

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15
Q

Dermal Tissue

A

The outer covering of the plant

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16
Q

Ground Tissue System

A

Carries out photosynthesis, stores photosynthetic products, and helps support the plant.

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17
Q

Vascular Tissue System

A

Conducts water and solutes throughout the plant

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18
Q

Which adaptation serves to prevent water loss, overheating, and predation in plants from arid climates?

A

Spines

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19
Q

Chi Square Analysis

A

x^2 = sum [(observed values - expected)^2 / expected values

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20
Q

Degrees of Freedom

A

df = Possible Categories - 1

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21
Q

The molecular weight of water is 18.0154. One mole of water weighs _______ grams.

A

18

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22
Q

The ability of atoms to combine with other atoms is determined by

A

the number and distribution of electrons

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23
Q

Which of the following is the correct order (in decreasing order) for the relative strengths of chemical bonds?

A

Covalent, ionic, hydrogen, van der Waals forces

24
Q

The hydrogen bond between two water molecules arises because water is

A

polar

25
Q

If you mix 2 grams of salt in 20 milliliters of water, what percent solution (W/V) does this represent?

A

10%

26
Q

Urine, with a pH of 6, is _______ times more acidic than seawater, with a pH of 8.

A

100

27
Q

How much solvent must you add to 1 ml of a 50% solution to make a 10% solution?

A

4 ml

28
Q

When applying the SALI to a new piece of lab equipment, which of the following is not a step in this strategy?

A

Making chemical solutions

29
Q

How much NaCl (mw= 58.4 g/mol) should you add to water to make 100 ml of a 0.1 M solution?

A

0.584 g

30
Q

The minimum volume that the p10 micropipet will measure according to the Bio 204 Lab Manual is

A

0.0005 ml

31
Q

Which of the following clades has the greatest number of species?

A

Angiosperms

32
Q

One difference between gymnosperms and angiosperms is that gymnosperms

A

do not form flowers.

33
Q

The reproductive organ of angiosperms is the

A

flower

34
Q

The two major clades of angiosperms are called monocots and eudicots. These plants differ in the number of

A

embryonic cotyledons.

35
Q

In most regions of Earth today, land flora consists predominantly of

A

angiosperms

36
Q

Which of the following is a structure found in the stamen?

A

Anther

37
Q

The outer layer of cells that protects the plant is called the

A

epidermis

38
Q

“An organized group of cells, working together as a functional unit” is the definition of a(n)

A

tissue

39
Q

The vascular tissue system of plants has the same function as the _______ system in animals.

A

circulatory

40
Q

The meristem is

A

composed of undifferentiated cells.

41
Q

Carnivorous and Heterotrophic Plants: Carnivorous plants trap and digest _______ to increase their supply of _______. They grow in areas that have boggy, _______ soils.

A

insects and even small vertebrates; nitrogen; acidic

42
Q

In aquatic plants, _______ tissue allows oxygen to reach submerged tissues.

A

aerenchyma

43
Q

Which of the following would be considered an abiotic factor in the environment?

A

Temperature, Salinity, Light, Wind

44
Q

Plants with fleshy, water-storing leaves are called _______ .

A

succulents

45
Q

In cacti, leaves are modified to form _______ , and photosynthesis is carried out in the _______ region.

A

spines, stem

46
Q

Which of the following is not an adaptation for survival in cold environments?

A.	Cold-hardening
B.	Heat shock proteins
C.	Hairs and spines
D.	Antifreeze proteins
E.	Increased production of unsaturated fatty acids in membrane lipids.
A

C. Hairs and spines

47
Q

Which of the following is not a characteristic of xerophytes? (Note that not all xerophytes have each of these characteristics.)

A

Abundant leaves

48
Q

Which of the following would be considered a biotic factor in the environment?

A

The presence of parasites

49
Q

Which of the following is not an adaptation to a dry environment?

A

Airborne roots

50
Q

Which of the following is not a special adaptation of leaves to dry environments?

A

Salt glands

51
Q

Which of the following is not a true variable type?

A

Cumulative

52
Q

You are running an experiment to test the effects of a new cancer drug on living cancer cells. For one of your treatment groups you do not administer any of the drug. This is an example of a ___________ and you would expect __________.

A

negative control; the cells to continue growing

53
Q

To increase the power of a statistical test you can

A

Decrease the variability in the sample

54
Q

If the assumptions of a statistical test are violated by your data, you may:

A

falsely conclude that your hypothesis is supported

falsely conclude that your hypothesis is refuted

55
Q

After running an experiment and analyzing his data, a scientist erroneously rejects his null hypothesis. This is an example of a

A

Type I error

A false positive

56
Q

Which of the following is not a feature of scientific hypotheses?

A. They are unable to be falsified.
B. They make predictions.
C. They are based on observations.
D. They can be tested by experimentation.
E. They can be tested by observational analysis.

A

A. They are unable to be falsified.

57
Q

After observing that fish live in clean water but not in polluted water, researchers state that “polluted water kills fish.” This statement is an example of

A

a hypothesis.

BIO 204 (1 decks)

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