Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Bio201 > Finals Practice > Flashcards

Finals Practice Flashcards

Difficult questions from practice exams

1
Q

As a plant grows, where does most of the matter in the plant come from?

A

carbon in the air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Respiration releases energy in both plants and animals [True/False]

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Animals use food for matter in addition to energy [True/False]

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

N2O has been increasing in the atmopshere since the 1700s and the increase is attributed to human activities [True/False]

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Microbes in soils and oceans make N2O as part of the nitrogen cycle [True/False]

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The use of fertilizers has increases the production of N2O in soils [True/False]

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

The burning of coal is the most important source of increased N2O in the atmosphere [True/False]

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Nutrients and minerals in the soil are a significant source of energy for plants [True/False]

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Why is the use of agricultural fertilizer often associated with the overgrowth of algae in nearby bodies of water?

A

because nitrogen in the fertilizer increases algae growth rates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What causes eutrophication?

A

exessive richness of nutrients in a lake or other body of water frequently due to runoff from the land

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Eutrophication involves a dense growth of __________

A

photosynthetic organisms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Eutrophication frequently causes lack of ________ in bodies of water

A

dissolved oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Conversion of nitrate to N2 requires [high/low] concentrations of oxygen

A

low

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

On a per-molecule scale, nitrous oxide is a [more/less] potent greenhouse gas than CO2

A

more

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

In mosses and ferns, gametes are produced through

A

mitosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

In mosses and ferns, spores are produced through

A

meiosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Living on land was facilitated by what phenotypic characteristics

A

cuticle
stoma
loss of swimming sperm

18
Q

The chloroplasts of land plants are derived from

A

an endosymbiotic event in which a photosynthetic eukaryote invaded the cell of a non-photosynthetic eukaryote

19
Q

Photoautotrophs get their energy from ___ and matter from ___

A

the sun; inorganic molecules

20
Q

Digesting organic molecules outside of the body and absorbing the product is a synapomorphy of fungi [True/False]

A

True

21
Q

Reproduction using spores is a synapomorphy of fungi [True/False]

A

False

22
Q

Which type of organism is mainly responsible for moving carbon atoms from wood to the atmosphere?

A

fungi

23
Q

Are gene regulatory switches the same between different types of cells?

A

Yes

24
Q

Do gene regulatory switches encode for proteins?

A

No

25
Q

If two alleles of a gene are different, then…

A

they have different DNA sequences

26
Q

Transcriptional regulatory proteins determine the amount of transcription in each cell type [True/False]

A

True

27
Q

How many molecules of DNA are in an unreplicated chromosome?

A

One

28
Q

The coding region of an allele undergoes ___ resulting in the production of mRNA

A

transcription

29
Q

Similarities between scientific theories and scientific explanations

A

they are both designed to explain phenomena
both tentative and subject to revision

30
Q

Differences between scientific theories and scientific explanations

A

Scientific theories are larger in scale and incorporate many observations, inferences, tested hypotheses, etc.
Scientific explanations are smaller in scale and usually invoke one or more scientific theory

31
Q

The only way variation occurs is through random mutations that are passed down to offspring [True/False]

A

True

32
Q

Differences between natural selection and genetic drift

A

natural selection is non-random / drift is random
natural selection sorts based on alleles that increase fitness / drift is by chance
natural selection increases average fitness / drift does not

33
Q

What is absolutely necessary for a population to evolve?

A

heritable variation

34
Q

What part of natural selection is random?

A

the mutations that generate a population’s standing genetic variation

35
Q

Biological fitness refers to healthy, strong, large, and/or sexy individuals [True/False]

A

false

36
Q

Not using traits for many generations will cause them to be lost [True/False]

A

False

37
Q

More evolution will occur when populations are in need of new traits to survive [True/False]

A

False

38
Q

Populations showing no change over time in average phenotype can be experiencing natural selection [True/False]

A

True

39
Q

Natural selection does not require environmental change [True/False]

A

True (it does not)

40
Q

Selection and drift decrease genetic variation in populations [True/False]

A

True

41
Q

Populations can adapt genetically to environmental change [True/False]

A

True (note: environment does not cause the change but it may determine if the change is beneficial to success)

Bio201 (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions