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Science Final (7th grade) Flashcards

(75 cards)

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1
Q

Messages are carried back and forth between the brain and other parts of the body by
a. respiratory tissue
b. nerve tissue
c. the circulatory system
d. digestive tissue

A

b. nerve tissue

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2
Q

In which vessels are materials exchanged between the blood and the body cells?
a. veins
b. arteries
c. capillaries
d. lymphatic vessels

A

c. capillaries

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3
Q

A motor neuron sends an impulse to
a. a muscle or gland
b. a sensory neuron
c. an interneuron
d. another motor neuron

A

a. a muscle or gland

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4
Q

An automatic response of the body that occurs very rapidly and without conscious control is called a
a. stimulant
b. interneuron
c. reflex
d. reaction

A

c. reflex

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5
Q

The three regions that make up the brain include the cerebrum, cerebellum, and
a. stimulant
b. interneuron
c. spinal cord
d. brain stem

A

d. brain stem

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6
Q

How many loops does the human circulatory system contain
a. one
b. two
c. three
d. four

A

b. two

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7
Q

The function of each atrium is to
a. pump blood to the lungs
b. pump blood to the body
c. receive blood that comes into the heart
d. deliver oxygen to body tissues

A

c. receive blood that comes into the heart

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8
Q

Blood vessels that carry blood away from the heart are called
a. veins
b. arteries
c. capillaries
d. lymph vessels

A

b. arteries

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9
Q

What eventually happens to fluid that leans from capillaries into the surrounding tissues
a. it undergoes chemical reactions and becomes fatty tissue
b. it replaces dead body cells
c. it returns to the blood through lymphatic system
d. it replaces dead red blood cells

A

c. it returns to the blood through lymphatic system

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10
Q

What is the function of lymph nodes
a. to trap disease causing bacteria
b. to make new lymph
c. to transfer oxygen
d. to return lymph to the bloodstream

A

a. to trap disease causing bacteria

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11
Q

Tiny filtering structures where urine is produced in the kidneys are called
a. neurons
b. alveoli
c. nephrons
d. bronchi

A

c. nephrons

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12
Q

Which excretory organ eliminates water and some chemical wastes in perspiration (sweat)
a. skin
b. liver
c. lungs
d. kidneys

A

a. skin

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13
Q

The two passages that direct air from the trachia into the lungs are called
a. alveoli
b. urethra
c. bronchi
d. dendrites

A

c. bronchi

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14
Q

The column of nerve tissue that links the brain to most of the nerves in the peripheral nervous system is the
a. brain
b. spinal cord
c. cerebellum
d. axon tips

A

b. spinal cord

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15
Q

The part of the brain that is responsible for mental processes like learning and remembering is called
a. the brain stem
b. the spinal cord
c. the cerebellum
d. the cerebrum

A

d. the cerebrum

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16
Q

The cell that carries information through the nervous system is called
a. enzyme
b. lymph node
c. neuron
d. gland

A

c. neuron

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17
Q

The brain and spinal cord make up the
a. central nervous system
b. peripheral nervous system
c. somatic nervous system
d. autonomic nervous system

A

a. central nervous system

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18
Q

When the ventricles contract, blood is pumped
a. out of the heart
b. into the heart
c. directly to the atrium
d. into veins

A

a. out of the heart

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19
Q

True or False
The outermost layer of the skin is the dermis

A

False- epidermis

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20
Q

True or False
Sensory neurons and motor neurons make up the peripheral nervous system

A

TRUE

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21
Q

True or False
Involuntary actions are controlled by the automatic nervous system

A

TRUE

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22
Q

The respiratory system removes oxygen and water from the body

A

False- it removes carbon dioxide

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23
Q

For a nerve impulse to pass from one neuron to another, it must cross a space called ___________

A

synapse

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24
Q

Blood returns to the heart from the body through blood vessels called __________

A

veins

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25
The glands of the endocrine system produce chemical messengers called __________
hormones
26
The part of the brain that controls balance is the __________
cerebellum
27
A mating system that includes one male and one female is referred to as a. monogamy b. polygyny c. polyandry d. polygynandry
a. monogamy
28
All angiosperms a. produce cones b. produce fruits c. are seedless d. are tropical
b. produce fruits
29
The first time a bird builds a nest, the bird builds the nest perfectly. This kind of behavior is an example of a. behavior instinct b. trial and error instinct c. tropism d. conditioning
a. behavior instinct
30
Plants respond to stimuli by releasing chemicals that affect growth and development called a. pollen b. pheromones c. hormones d. alleles
c. hormones
31
Behavior almost always helps an animal a. locate other animals of the same species b. either survive or reproduce c. show that it is afraid or tired d. protect itself from predators
b. either survive or reproduce
32
The different forms of a gene are called a. alleles b. factors c. masks d. traits
a. alleles
33
Pheromones from one species of moth might attract a. all flying insects b. all types of moths c. ants d. moths of the same species
d. moths of the same species
34
What characteristics do gymnosperms share a. they live only in hot, dry climates b. they produce seeds without fruits c. they have pistils that release pollen d. they grow flowers
b. they produce seeds without fruits
35
The stages of a plant's life cycle are a. sporophyte and spore b. sporophyte and gametophyte c. spore and gametophyte d. egg and gametophyte
b. sporophyte and gametophyte
36
Which term refers to specific characteristics that are studied in genetics a. traits b. offspring c. generations d. hybrids
a. traits
37
A fertilized egg is called a. ovule b. cone c. fruit d. zygote
d. zygote
38
What produces egg and sperm cells during the life cycle of a plant a. thigmotropism b. gametophyte c. sporophyte d. zygote
b. gametophyte
39
An inborn response to a stimulus is a. behavior b. trial c. instinct d. imprint
c. instinct
40
Dormancy is a period when an organism's growth or activity a. continues b. stops c. speeds up d. starts
b. stops
41
A plants response to light is called a. phototropism b. thigmotropism c. gravitropism d. hydrotropism
a. phototropism
42
A flower's female reproductive parts are called a. sepals b. anthers c. pistils d. filaments
c. pistils
43
True or False Sexual reproduction produces offspring that is genetically identical to the parent
False- Asexual
44
True or False The coiling of two veins around each other is an example of a plant response to gravity
False- response to touch, not gravity
45
True or False Traits are passed down from parents to offspring on genes
TRUE
46
Auxin is a hormone that speeds up the growth of plant's cells
TRUE
47
____________ is a plant's response to seasonal changes in the length of night and day
photoperiodism
48
____________ occurs when an embryo sprouts from a seed
Germination
49
The reproductive structures of gymnosperms called _____________
cones
50
A plant's growth response toward or away from the stimulus is called _____
tropism
51
Sex cells are formed in a specialized process called a. cloning b. mitosis c. meiosis d. mutation
c. meiosis
52
The passing of traits from parents to offspring is called a. genotype b. cloning c. probability d. heredity
d. heredity
53
Factors the control traits are called a. genes b. purebreds c. recessives d. pedigrees
a. genes
54
What does the notation TT mean to geneticists a. two dominant alleles b. heterozygous alleles c. at least one dominant allele d. one dominant and one recessive allele
a. two dominant alleles
55
What does the notation Tt mean to geneticists a. two dominant alleles b. heterozygous alleles c. at least one dominant allele d. one dominant and one recessive allele
d. one dominant and one recessive allele
56
The different forms of a gene are called a. alleles b. factors c. masks d. traits
a. alleles
57
An organism that has two identical alleles for a trait is a. codominant b. tall c. homozygous d. heterozygous
c. homozygous
58
An organism's genotype is its a. genetic makeup b. feather color c. physical appearance d. stem height
a. genetic makeup
59
A heterozygous organism has a. three different alleles for a trait b. two identical alleles for a trait c. only one allele for a trait d. two different alleles for a trait
d. two different alleles for a trait
60
An organism's physical appearance is its a. genotype b. phenotype c. codominance d. heterozygous
b. phenotype
61
If a homozygous black guinea pig (BB) is crossed with a homozygous white guinea pig (bb), what is the probability that an offspring will have black fur? a. 25% b. 50% c. 75% d. 100%
d. 100%
62
Chromosomes are made up of a. one pair of alleles b. many traits joined together c. transfer RNA d. many genes joined together
d. many genes joined together
63
Chromosomes are made in the beginning of a. meiosis b. mitosis c. the cell cycle d. protein synthesis
c. the cell cycle
64
The process of meiosis results in a . two identical daughter cells b. four identical daughter cells c. two different daughter cells d. four different daughter cells
d. four different daughter cells
65
Scientists call an organism that has two different alleles for a trait a a. hybrid b. trait c. purebred d. factor
a. hybrid
66
Which term refers to a physical characteristic that are studies in genetics a. traits b. offspring c. generations d. hybrids
a. traits
67
True or False Even if a gene has multiple alleles, a person cannot have more than three of those alleles
False- cannot have more than two
68
True or False A male is represented by a square in a pedigree
TRUE
69
True or False An organism's phenotype is its allele combinations
False- its an organism's genotype
70
True or False The sex cells produced by meiosis have twice the number of chromosomes as the parent cells
False- half the number of chromosomes as the parent cells
71
Genes are carried from parents to their offspring on structures called _______
chromosomes
72
If a _______ allele is present, its traits will appear in the organism
dominant
73
If D represents the dominant allele of a gene, the _____ represents the recessive allele
d
74
The chromosomes in a pair may each have different _____ for each gene
alleles
75

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