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Penn Foster Introduction to Biology > Intro to Bio - Proctored Exam Flashcard > Flashcards

Intro to Bio - Proctored Exam Flashcard

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1
Q

What is the main energy molecule in the body?

A

ATP

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2
Q

Crossing-over involves the exchange of genetic information between:

A

nonsister chromatids

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3
Q

Which of the following occurs during the light reactions of photosynthesis?

A

NADPH Production

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4
Q

How does mitosis in plant cells differ from that in animal cells?

A

Animals lack a cell plant and plant cells lack centrioles

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5
Q

What is the correct order in which genes are expressed?

A

DNA -> RNA -> Proteins

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6
Q

What is a characteristic of cancer cells?

A

They result in uncontrolled growth

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7
Q

What is thigmotropism

A

Growth in response to touch

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8
Q

During exponential growth, the rate of growth:

A

Starts slowly then accelerates

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9
Q

Which atom contains 6 protons and electrons?

A

Carbon

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10
Q

What does a receptor protein do?

A

Allows a specific molecule to bind to it because of its shape

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11
Q

What are modifications that make organisms suited to their way of life?

A

Adaptations

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12
Q

Which of the following organelles is part of the endomembrane system?

A

Golgi Apparatus

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13
Q

Sunflowers belong to which Kingdom?

A

Plantae

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14
Q

An insect is able to walk across the surface of a pond without sinking because of the

A

Surface tension of the water

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15
Q

If you immerse a living cell in a hypertonic solution, water will

A

move out of the cell

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16
Q

What have the potential to develop and specialize into any cell type, which means they’re

A

Totipotent, Embryonic stem cells

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17
Q

Stating that an organisms is heterozygous is stating it

A

Genotype

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18
Q

The phase of cell division in which chromosomes align on the spindle equator halfway between the spindle poles is

A

Metaphase

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19
Q

In the evolutionary adaption sense, what is fitness

A

The reproductive success of an individual

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20
Q

The distinction between protostomes and deuterostomes is based on differences in their

A

Embryological development

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21
Q

Which of the following structure develops into a pollen grain?

A

Microspore

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22
Q

What is a condition required for the Hardy-Weinberg principle to be in effect?

A

Random mating

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23
Q 
Which of the following is NOT an example of a service provided by beneficial bacteria?
A. Food Production
B. Nutrient Cycling
C. Bioaccumulation
D. Bioremediation
A

bioaccumulation

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24
Q

During the life cycle of a plant, gametophyte is to n as sporophyte is to

A

2n

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25
Q

In plants, what type of tissue is responsible for transporting water and nutrients

A

Vascular tissue

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26
Q

Which of the following animals has a single-loop closed circulatory system

A

Fish

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27
Q

Which structure transports sugars from leaves to the roots

A

Phloem

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28
Q

What is an example of a renewable resource?

A

Wind, Solar, Water, Heat

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29
Q

What will have a greater impact on a population as the density of that population increases?

A

Predation

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30
Q

Study the following food chain: Grass -> Rabbits -> Snakes -> Hawks.
From this food chain, you can correctly assume that each population

A

Supports the next trophic level

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31
Q

Which pollutant is responsible for the increase in skin cancer?

A

chlorofluorocarbons

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32
Q

What characteristic of a population increases with plentiful resources?

A

Population density

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33
Q

Why might introduction of an exotic species disrupt an ecosystem

A

They can outcompete the native species

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34
Q

What is NOT a domain of the 3 domain system?

A

Prokarya

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35
Q

What is the name for all the chemical processes in the cell?

A

Metabolism

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36
Q

Example of a monosaccharide?

A

Glucose

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37
Q

Which of the following molecules is a byproduct of cellular respiration

A

water

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38
Q

What structure surrounds the cytoplasm in a bacterial cell?

A

Plasma Membrane

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39
Q

What is true of the scientific method?

A

it is an accepted explanation for how the world works

40
Q

Binomial name given to an organism is composed of

A

Genus, Species

41
Q

Nucleic acids are composed of monomers called

A

Nucleotides

42
Q

What occurs in the cristae of the mitochondria

A

Electron transport chain

43
Q

What does electronegativity mean?

A

Affinity for electrons in a covalent bond

44
Q

What chromosomes are found in pairs, one from father and mother?

A

Homologous

45
Q

Bacteria reproduce by

A

Binary Fission

46
Q

Autosomes are __ chromosomes

A

nonsex

47
Q

What holds the base pairs of DNA together?

A

Hydrogen Bonding

48
Q

What is an example of an X-linked recessive disorder?

A

Color Blindness

49
Q

A woman who isn’t color blind but has an allele for color blindness reproduces with a man who has normal vision. What is the chance they’ll have a colorblind daughter?

A

0%

50
Q

If a piece of DNA breaks off from a chromosome and attaches itself to a nonhomologous chromosome at another location, what type of change has occurred?

A

Translocation

51
Q

One parent has curly hair, one parent has straight hair, their child has wavy hair. This is an example of

A

Incomplete Dominance

52
Q

What are the proteins that DNA is wound around to form chromosomes?

A

Histones

53
Q

2 organisms, each with the genotype TtGg, mate. The chance of producing offspring that has the dominant phenotype for height (T) and the recessive phenotype color (g) is

A

3/16

54
Q

Which of these is happening when translocation takes place?

A

tRNA are bringing amino acids to the ribosomes

55
Q

If a cell has 46 chromosomes, how many will it have after meiosis?

A

23

56
Q

Both insects and roundworms exhibit _ whereas sponges, snails and leeches do not

A

Molting during growth

57
Q

Fungi are considered to be more closely related to animals instead of plants because they

A

Can’t make their own food

58
Q

__ isolation occurs when 2 species occupy different habitats within the same geographical range

A

Habitat isolation

59
Q

In evolution, the study of vertebrae forelimbs is related to __ evidence

A

Anatomical Evidence

60
Q

What happens when previous adaptations are no longer suitable for changes in the environment?

A

Extinction

61
Q

Which of the following is an example of a group of prokaryotic organisms?

A

Archaea

62
Q

Darwin argued that the beak size and shape of Galapagos Finch species was related to their

A

Food Source

63
Q

The most diverse and prevalent organisms on earth are

A

Bacteria

64
Q

Angiosperms may use any of the following to disperse pollen except

A

Water

65
Q

Which of the following is not a form of genetic recombination in bacteria?

A

Binary Fission

66
Q

The tail bones of humans is an example of __ structure

A

Vestigial

67
Q

According to the theory of evolution, birds feathers evolved from

A

Reptile scales

68
Q

__ capture their prey with a ring of stinging tentacles

A

Cnidarians

69
Q

What organism can live in hot springs and thermal vents

A

Archaea

70
Q

Which nutrient is not a source of energy for the body?

A

Vitamins

71
Q

What type of reproduction shuffles the genes?

A

Sexual

72
Q

How many cotyledons would be found in a flowering plant with 9 petals on each flower and long leaves with parallel leaf veins

A

One

73
Q

What is the pathway of blood flow in a closed circulatory system?

A

Heart, Arteries, Capillaries, Veins

74
Q

What chamber of the heart receives blood from the pulmonary veins

A

Left Atrium

75
Q

During development, an embryo is embedded in the

A

Endometrium

76
Q

What would cause a plant to grow taller

A

Gibberellins

77
Q

During transpiration, water exits the leaf via

A

The stomata

78
Q

Which of the following is the largest?

A

Bronchi

79
Q

Annual rings in woody stems are caused by an increase in rings of the

A

Secondary Xylem

80
Q

Too much calcium in a persons diet may result in

A

Kidney Stones

81
Q

In plants, the purpose of auxins is to

A

bring about apical dominance

82
Q

What happens when the lungs recoil

A

Expiration

83
Q

Invitro fertilization takes place in

A

a Laboratory

84
Q

What is the internal lining of many organ called?

A

Epithelium

85
Q

__ the science of observing and describing organisms in their environment paired with experimental science?

A

Ecology

86
Q

The most common cause of desertification is

A

Overgrazing

87
Q

A complex of interconnected food chains in an ecosystem is called a/an

A

Food wed

88
Q

What is NOT a renewable source of energy?

A

Nuclear

89
Q

What is one result of the “Green Revolution”

A

An increase in the yield of crops for less developed countries

90
Q

Environmental impact of a population includes all of the following except

A

Predation

91
Q

Which one of the following phrases describes many countries within Asia and Africa?

A

LDC’s experiencing rapid population growth

92
Q

Completation, predation, and parasitism are __ factors in influencing population growth

A

Density dependent

93
Q

Which one of the following is an example of a resource partitioning?

A

2 species of squirrels - one eats acorns from the branches and one eats acorns that have fallen to the ground

94
Q

A species particular position in the community is its

A

Niche

95
Q

What is the correct definition of carrying capacity?

A

The number of individuals an environment can sustain

Penn Foster Introduction to Biology (1 decks)

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