2688222
Descripción
Test por Heidi Sherwood, actualizado hace más de 1 año
|
|
Creado por Heidi Sherwood
hace alrededor de 9 años
|
|
Pregunta 1
Pregunta
Most voluntary movement in a vertebrate body is accomplished by:
Respuesta
-
Muscles pulsing in waves of contraction to change the shape of the organism
-
Muscles pushing against bones to force them apart
-
Muscles pushing against tubes filled with fluid
-
Muscles pulling bones to bring them closer together
Pregunta 2
Pregunta
Which statement best reflects how contraction of a muscle fiber is accomplished?
Respuesta
-
Calcium causes the actin fibers to contract
-
Calcium causes the myosin fibers to contract
-
Calcium and ATP cause both actin and myosin fibers to contract
-
ATP powers a sliding of actin fibers past myosin
Pregunta 3
Pregunta
How does the smooth muscle of blood vessels, stomach and intestine differ from skeletal muscle?
Respuesta
-
Smooth muscle is involuntary, skeletal muscle is voluntary
-
Smooth muscle is voluntary, skeletal muscle is involuntary
-
Only smooth muscle is controlled by nerve impulses
-
Skeletal muscle does not use calcium
Pregunta 4
Pregunta
What sort of a signal causes a skeletal muscle to contract?
Respuesta
-
An adjacent nerve cell releases an electrical signal
-
An adjacent nerve cell releases calcium
-
An adjacent nerve cell releases a chemical neurotransmitter
-
An adjacent nerve cell releases ATP
Pregunta 5
Pregunta
How does the circulatory system of a human compare with that of an insect?
Respuesta
-
The human has a closed system, the insect is open
-
Both the human and the insect are closed
-
The human has an open system, the insect is closed
Pregunta 6
Pregunta
Which of the following systems does not exchange with the circulatory system in vertebrates?
Respuesta
-
Digestive system
-
Respiratory system
-
Excretory system
-
Cells and interstitial fluid
-
All of these exchange with the circulatory system
Pregunta 7
Pregunta
Blood from the left ventricle goes:
Respuesta
-
To the left atrium
-
To the pulmonary artery and the lung
-
To the right ventricle
-
To the aorta and the body
-
To the right atrium
Pregunta 8
Pregunta
The bulk of oxygen in the blood is carried
Respuesta
-
Bound to the hemoglobin in the red blood cells
-
Dissolved in the cytoplasm of the red blood cells
-
Dissolved in the plasma
-
Bound to the hemoglobin in the plasma
Pregunta 9
Pregunta
Compare the speed of liquid flow in capillaries and the aorta
Respuesta
-
Faster in capillaries because they are narrower
-
Slower in capillaries because they are narrower
-
Faster in capillaries because the total diameter of all the capillaries is greater than the diameter of the aorta
-
Slower in capillaries because the total diameter of all the capillaries is greater than the diameter of the aorta
-
The same because the total volume of blood is constant
Pregunta 10
Pregunta
During countercurrent exchange in fish gills, where blood first enters the gills:
Respuesta
-
Oxygen-rich blood encounters oxygen-poor water
-
Oxygen-rich blood encounters oxygen-rich water
-
Oxygen-poor blood encounters oxygen-poor water
-
Oxygen-poor blood encounters oxygen-rich water
-
Oxygen-poor and oxygen-rich blood mix together with oxygen-rich water
Pregunta 11
Pregunta
The air sacks of the lung where gas exchange takes place are called:
Respuesta
-
Lacteal
-
Villi
-
Cecum
-
Alveoli
-
Trachea
Pregunta 12
Pregunta
Essential amino acids are
Respuesta
-
Those that are present in all body proteins
-
Those that are the most abundant in the body
-
Those that the body synthesizes
-
Those the body uses most
-
Those the body can not synthesize
Pregunta 13
Pregunta
Given an equal serving weight
Respuesta
-
Carbohydrates have more calories than fats
-
Fats have more calories than carbohydrates
-
Fats and carbohydrates have the same calorie content
Pregunta 14
Pregunta
The digestion of starch begins
Respuesta
-
In the mouth
-
In the stomach
-
In the duodenum
-
In the small intestine
-
In the large intestine
Pregunta 15
Pregunta
The pH of the stomach is:
Respuesta
-
Highly acidic
-
Highly basic
-
Neutral (pH about 7)
Pregunta 16
Pregunta
How is glucose concentration in the blood regulated?
Respuesta
-
When the concentration is high, insulin causes glucose to be removed from the blood
-
When the concentration is low, insulin causes glucose to be removed from the blood
-
When the concentration is high, insulin causes glucose to be added to the blood
-
When the concentration is low, insulin causes glucose to be added to the blood
Pregunta 17
Pregunta
What mechanisms are not used in the production of urine by the mammalian kidney?
Respuesta
-
Pressure filtration
-
Reabsorption of water
-
Selective reabsorption of salts
-
All of these are used in the production of urine
Pregunta 18
Pregunta
In most circumstances, how does the solute (salts and urea) concentration of mammalian urine in the bladder compare with that of blood entering the kidney?
Respuesta
-
The solute concentration in the urine is higher
-
The solute concentration in the urine is lower
-
The solute concentration in the urine is about the same as in the blood
Pregunta 19
Pregunta
Which of the following pathways is the most common in the nervous system?
Respuesta
-
Sensory neuron --> motor neuron --> interneuron
-
Sensory neuron --> interneuron --> motor neuron
-
Motor neuron --> sensory neuron --> interneuron
-
Motor neuron --> interneuron --> sensory neuron
-
Interneuron --> sensory neuron --> motor neuron
Pregunta 20
Pregunta
What is the correct path for the flow of the signal in a single neuron?
Respuesta
-
Synaptic terminal (release neurotransmitter) --> dendrite --> axon
-
Axon --> synaptic terminal (release neurotransmitter) --> dendrive
-
Synaptic terminal (release neurotransmitter) --> axon --> dendrite
-
Dendrite --> synaptic terminal (release neurotransmitter) --> axon
-
Dendrite --> axon --> synaptic terminal (release neurotransmitter)
Pregunta 21
Pregunta
Nervous signals are carried along the axon by a wave of depolarization and between nerve cells by neurotransmitters
Respuesta
- True
- False
Pregunta 22
Pregunta
Automatic functions like breathing and digestion are controlled by the
Respuesta
-
Medulla oblongata
-
Cerebral cortex
-
Cerebellum
Pregunta 23
Pregunta
Which of the following is NOT true concerning steroid hormones?
Respuesta
-
Testosterone and estrogen are examples
-
The receptors for them are within the target cell
-
They are composed of animo acids and the receptors are on the cell surface
-
THeir ultimate purpose is to activate transcription of specific genes
-
They are related to cholesterol in structure
Pregunta 24
Pregunta
Which (if any) of the following is not part of the human endocrine system?
Respuesta
-
Hypothalamus and pituitary
-
Adrenal glands
-
Ovaries (in females)
-
Testes (in males)
-
All of these are part of the human endocrine system
Pregunta 25
Pregunta
Bone is:
Respuesta
-
A living dynamic tissue that is being constantly remodeled
-
A dead, fully formed tissue that is being constantly remodeled
-
A dead, fully formed tissue that is not being remodeled
-
A living dynamic tissue that is not being remodeled
Pregunta 26
Pregunta
Nervous tissue is tissue that specializes in conducting signals
Respuesta
- True
- False
Pregunta 27
Pregunta
Check all that are parts of the nervous tissue
Respuesta
-
Neurons (cells specialized for signal transduction)
-
Cartilage (firm but flexible connective tissue)
-
Gliel cells (support the neuron)
-
Myofilaments (composed of actin and myosin)
Pregunta 28
Pregunta
Myosin and actin are not proteins
Respuesta
- True
- False
Pregunta 29
Pregunta
When talking about neurons, which is the order of the signals?
Respuesta
-
Electrical signal --> chemical signal --> electrical signal
-
Electrical signal --> electrical signal --> chemical signal
-
Chemical signal --> electrical signal --> electrical signal
-
Chemical signal --> electrical signal --> chemical signal
Pregunta 30
Pregunta
In the neuron, the axon receives the signal
Respuesta
- True
- False
Pregunta 31
Pregunta
The sensory neurons:
Respuesta
-
Take the signals from the environment to the brain
-
Connect the sensory neurons to the motor neurons.
-
Take signals from the brain and propagate them toward the muscles.
Pregunta 32
Pregunta
Interneurons:
Respuesta
-
Take the signals from the environment to the brain
-
Connect the sensory neurons to the motor neurons.
-
Take signals from the brain and propagate them toward the muscles.
Pregunta 33
Pregunta
Motor neurons:
Respuesta
-
Take the signals from the environment to the brain
-
Connect the sensory neurons to the motor neurons
-
Take signals from the brain and propagate them toward the muscles
Pregunta 34
Pregunta
Smooth muscle
Respuesta
-
Is involuntary
-
Is voluntary
Pregunta 35
Pregunta
Check all that are apply to smooth muscles
Respuesta
-
Include blood vessels
-
Include the intestinal track
-
Include the stomach
-
Are in the heart
-
Are related to moving the bones in the body
-
Are involuntary
-
Are voluntary
Pregunta 36
Pregunta
There are three general functions of the circulatory system
Respuesta
- True
- False
Pregunta 37
Pregunta
What is the cycle of blood?
Respuesta
-
Heart --> body --> heart --> lungs
-
heart--> body --> lungs --> heart
Pregunta 38
Pregunta
Arteries:
Respuesta
-
Direct the blood away from the heart
-
Direct the blood to the heart
Pregunta 39
Pregunta
Veins:
Respuesta
-
Direct the blood away from the heart
-
Direct the blood to the heart
Pregunta 40
Pregunta
The circulatory system transports nutrients, minerals, oxygen, and waste throughout the body
Respuesta
- True
- False
Pregunta 41
Pregunta
Cells do not need O2 to produce ATP
Respuesta
- True
- False
Pregunta 42
Pregunta
What is the principle function of red blood cells?
Respuesta
-
To carry oxygen
-
For defense
-
For clotting
Pregunta 43
Pregunta
What is the principle function of white blood cells?
Respuesta
-
To carry oxygen
-
For defense
-
For clotting
Pregunta 44
Pregunta
What is the principle function of platelets?
Respuesta
-
To carry oxygen
-
For defense
-
For clotting
Pregunta 45
Pregunta
Blood is composed of two things: cells and plasma
Respuesta
- True
- False
Pregunta 46
Pregunta
Where does the major exchange of CO2 and O2 take place?
Respuesta
-
The respiratory system
-
The circulatory system
-
The digestive system
Pregunta 47
Pregunta
In the digestive system, where does the major absorption occur?
Respuesta
-
The small intestines
-
The large intestines
-
The stomach
-
The esophogas
-
None of these
Pregunta 48
Pregunta
The large intestine is the last step in the digestion process
Respuesta
- True
- False
Pregunta 49
Pregunta
A hormone is a signaling molecule which elicits a psysiological response
Respuesta
- True
- False
Pregunta 50
Pregunta
Hormones are not diverse
Respuesta
- True
- False
Pregunta 51
Pregunta
When blood glucose levels are low, the pancreas releases
Respuesta
-
insulin
-
glucagon
Pregunta 52
Pregunta
Muscles:
Respuesta
-
work by pulling bones closer together and work in opposing pairs
-
work by pushing bones further apart and work in opposing pairs
Pregunta 53
Pregunta
In muscle contraction:
Respuesta
-
Myocin is at the center and actin is on the outskirts, and they slide past each other.
-
Actin is at the center and myocin is on the outskirts, and they slide past eacho ther.
Pregunta 54
Pregunta
Which would you expect to represent the greatest biomass in an ecosystem?
Respuesta
-
Producers
-
Primary consumers
-
Tertiary consumers
-
Equal in all 3 of these
Pregunta 55
Pregunta
Carbon cycles back and forth between living and nonliving forms by:
Respuesta
-
Photosynthesis only
-
Respiration only
-
Photosynthesis and respiration
Pregunta 56
Pregunta
Nitrogen can be acquired from atmospheric gas for biological processes by:
Respuesta
-
Only bacteria
-
Bacteria and plants
-
Bacteria and fungi
-
All living organisms
Pregunta 57
Pregunta
The greatest biodiversity can be expected to occur in:
Respuesta
-
Tropical rainforest
-
Savanna
-
Desert
-
Grasslands
-
Conifer
Pregunta 58
Pregunta
Which (if any) of the following does not influence climate?
Respuesta
-
Latitude
-
Elevation
-
Geography
-
Ocean currents
-
All of these can have an effect on climate
Pregunta 59
Pregunta
In freshwater ponds, seasonal temperature changes cause spring and fall overturns that redistribute nutrients.
Respuesta
- True
- False
Pregunta 60
Pregunta
A tundra-like region can be found:
Respuesta
-
Only at the poles
-
At the equator
-
Any arid region
-
Sub-polar and high altitude
¿Quieres crear tus propios Tests gratis con GoConqr? Más información.