Which cells carry nutrients from food to the rest of the cells in the body?(1 point)
nerve cells
blood cells
muscle cells
stomach cells
blood cells
How are blood cells and stomach cells similar?(1 point)
Both secrete enzymes.
Both help with digestion.
Both help maintain homeostasis.
Both send signals in the body.
Both help with digestion.
Which option shows the correct order of organization within multicellular organisms (from least complex to most complex)?(1 point)
cell → tissue → organ → organ system → organism
tissue → organ system → organ → organism → cell
organ → organ system → cell → organism → tissue
cell → organ → organ system → tissue → organism
cell → tissue → organ → organ system → organism
Which statement is true?(1 point)
Bones are organ systems.
Bones provide shape to the body.
Bones help the heart pump blood.
Bones are composed of a single layer.
Bones provide shape to the body.
What is systemic circulation?(1 point)
the path of blood as it moves from the heart throughout the body and back to the heart
the path of blood between the heart and lungs
the path of blood as it moves from the head throughout the body and back to the head
the path of blood between pharynx and trachea
Systemic circulation is the path of blood as it moves from the heart throughout the body and back to the heart.
Which organ in the excretory system helps get filter waste?(1 point)
ureter
urethra
bladder
kidney
kidney
In which two organs is food broken down?(1 point)
esophagus and small intestine
small intestine and large intestine
esophagus and stomach
mouth and stomach
mouth and stomach
Which component of nerve cells contains the nucleus? (1 point)
axon
cell body
neuron
dendrite
cell body
A girl has her eyes shut and is standing inside a brightly lit room. What happens to her pupils when she opens her eyes? Why?(1 point)
Her pupils grow because the muscles contract.
Her pupils grow because the muscles relax.
Her pupils shrink because the muscles contract.
Her pupils shrink because the muscles relax.
Her pupils shrink because the muscles contract.
When the girl opens her eyes in a brightly lit room, the muscles in her iris contract, causing the pupil to constrict. This is a reflex action that helps to reduce the amount of light entering the eyes and protect the sensitive retina from excessive light.
The human body has four types of tissues. What part of the eye uses muscle tissue for opening and closing movements?(1 point)
Cornea
Iris
Sclera
Retina
Iris
How do polar bears maintain homeostasis in freezing cold weather? (1 point)
Their metabolism slows down to preserve heat.
They hibernate in warm areas in order to heat their bodies.
Their thick fur retains heat.
Their metabolism speeds up to produce heat.
Their metabolism speeds up to produce heat.
Which example shows an organism that cannot reach homeostasis through internal changes? (1 point)
A dog shivers when it is too cold.
Circulation decreases in a bird when it becomes too warm.
A person gets a fever in response to a flu infection.
A lizard is cold, and it moves to a sunny rock to warm up.
A lizard is cold, and it moves to a sunny rock to warm up.
How is homeostasis achieved?(1 point)
Cells maintain internal stability.
Cells secrete stomach enzymes.
Cells control involuntary movements.
Cells control voluntary movements.
Cells maintain internal stability.
How are muscle cells and bone cells similar?(1 point)
Both gather information from inside and outside the body.
Both make it possible for you to respond to your environment by moving.
Both control involuntary movements such as the beating of your heart.
Both release sweat when the temperature gets too warm.
Both make it possible for you to respond to your environment by moving.
What is the function of an organ system? (1 point)
to be a basic unit of organization with bodies
to work together to do a specific job
to control movement in internal organs
to organize a group of similar cells
to work together to do a specific job
Which is most complex?(1 point)
cells
organ system
organs
tissues
organ system
Which organ of the respiratory system is located inside the lungs?(1 point)
bronchioles
nasopharynx
trachea
larynx
bronchioles
Which organ in the excretory system filters blood?(1 point)
kidney
bladder
ureter
urethra
kidney
What is the term for changes in the internal or external environment that cause a response?(1 point)
signals
messages
nerves
stimuli
stimuli
How do signals from sensory neurons reach motor neurons?(1 point)
Through interneurons in the brain and spinal cord that connect sensory neurons and motor neurons.
Signals from sensory neurons do not get sent to motor neurons.
Motor neurons signal for the body to move the signal toward them.
Signals move from dendrite to dendrite towards motor neurons.