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Which cells carry nutrients from food to the rest of the cells in the body?(1 point)
Responses
stomach cells
stomach cells
blood cells
blood cells
nerve cells
nerve cells
muscle cells
which answer is it?
Responses
stomach cells
stomach cells
blood cells
blood cells
nerve cells
nerve cells
muscle cells
which answer is it?
The correct answer is blood cells. Blood cells, particularly red blood cells, are responsible for carrying nutrients from food to the rest of the cells in the body through the bloodstream.
How are blood cells and stomach cells similar?(1 point)
Responses
Both help maintain homeostasis.
Both help maintain homeostasis.
Both send signals in the body.
Both send signals in the body.
Both secrete enzymes.
Both secrete enzymes.
Both help with digestion.
which answer is it?
Responses
Both help maintain homeostasis.
Both help maintain homeostasis.
Both send signals in the body.
Both send signals in the body.
Both secrete enzymes.
Both secrete enzymes.
Both help with digestion.
which answer is it?
The correct answer is "Both secrete enzymes." Both blood cells and stomach cells secrete enzymes. Blood cells, specifically white blood cells, produce enzymes that help in immune responses, while stomach cells secrete enzymes such as gastric juice that aid in the digestion of food.
Which option shows the correct order of organization within multicellular organisms (from least complex to most complex)?(1 point)
Responses
cell → tissue → organ → organ system → organism
cell → tissue → organ → organ system → organism
cell → organ → organ system → tissue → organism
cell → organ → organ system → tissue → organism
organ → organ system → cell → organism → tissue
organ → organ system → cell → organism → tissue
tissue → organ system → organ → organism → cell
tissue → organ system → organ → organism → cell
which answer is it?
Responses
cell → tissue → organ → organ system → organism
cell → tissue → organ → organ system → organism
cell → organ → organ system → tissue → organism
cell → organ → organ system → tissue → organism
organ → organ system → cell → organism → tissue
organ → organ system → cell → organism → tissue
tissue → organ system → organ → organism → cell
tissue → organ system → organ → organism → cell
which answer is it?
The correct answer is "cell → tissue → organ → organ system → organism." This represents the correct order of organization within multicellular organisms, starting from the basic unit of life (cell) to the formation of tissues, organs, organ systems, and finally the whole organism.
Which statement is true?(1 point)
Responses
Bones help the heart pump blood.
Bones help the heart pump blood.
Bones are organ systems.
Bones are organ systems.
Bones are composed of a single layer.
Bones are composed of a single layer.
Bones provide shape to the body.
which answer is it?
Responses
Bones help the heart pump blood.
Bones help the heart pump blood.
Bones are organ systems.
Bones are organ systems.
Bones are composed of a single layer.
Bones are composed of a single layer.
Bones provide shape to the body.
which answer is it?
The correct statement is "Bones provide shape to the body." Bones provide support and structure to the body, helping to maintain its shape and form.
What is systemic circulation?(1 point)
Responses
the path of blood as it moves from the head throughout the body and back to the head
the path of blood as it moves from the head throughout the body and back to the head
the path of blood between the heart and lungs
the path of blood between the heart and lungs
the path of blood as it moves from the heart throughout the body and back to the heart
the path of blood as it moves from the heart throughout the body and back to the heart
the path of blood between pharynx and trachea
which answer is it?
Responses
the path of blood as it moves from the head throughout the body and back to the head
the path of blood as it moves from the head throughout the body and back to the head
the path of blood between the heart and lungs
the path of blood between the heart and lungs
the path of blood as it moves from the heart throughout the body and back to the heart
the path of blood as it moves from the heart throughout the body and back to the heart
the path of blood between pharynx and trachea
which answer is it?
The correct answer is "the path of blood as it moves from the heart throughout the body and back to the heart." Systemic circulation refers to the circulation of blood from the heart to the body's organs and tissues, delivering oxygen and nutrients while removing waste products, before returning to the heart.
Which organ in the excretory system has a function similar to that of the esophagus in the digestive system?(1 point)
Responses
urethra
urethra
bladder
bladder
ureter
ureter
kidney
which answer is it?
Responses
urethra
urethra
bladder
bladder
ureter
ureter
kidney
which answer is it?
The correct answer is "ureter." The function of the ureter in the excretory system is similar to that of the esophagus in the digestive system. The ureters carry urine from the kidneys to the bladder, just as the esophagus carries food from the mouth to the stomach.
In which two organs is food broken down?(1 point)
Responses
mouth and stomach
mouth and stomach
esophagus and stomach
esophagus and stomach
esophagus and small intestine
esophagus and small intestine
small intestine and large intestine
which answer is it?
Responses
mouth and stomach
mouth and stomach
esophagus and stomach
esophagus and stomach
esophagus and small intestine
esophagus and small intestine
small intestine and large intestine
which answer is it?
The correct answer is "mouth and stomach." Food is broken down in both the mouth and the stomach. In the mouth, mechanical digestion through chewing occurs, and saliva helps break down food chemically. In the stomach, the process continues with the help of stomach acid and muscular contractions.
When you get home, you smell cookies baking. You respond by walking toward the kitchen. Many signals move through your nervous system in this process. Which component is involved first? (1 point)
Responses
dendrites in your motor neurons
dendrites in your motor neurons
dendrites in your sensory neurons
dendrites in your sensory neurons
axons in your sensory neurons
axons in your sensory neurons
axons in your motor neurons
which answer is it?
Responses
dendrites in your motor neurons
dendrites in your motor neurons
dendrites in your sensory neurons
dendrites in your sensory neurons
axons in your sensory neurons
axons in your sensory neurons
axons in your motor neurons
which answer is it?
The correct answer is "dendrites in your sensory neurons." When you smell cookies baking, sensory neurons in your nose detect the scent and send signals to your brain. These signals are initially received by the dendrites in your sensory neurons, which then transmit the information to your brain for further processing and response.
Which component of nerve cells contains the nucleus? (1 point)
Responses
axon
axon
cell body
cell body
neuron
neuron
dendrite
which answer is it?
Responses
axon
axon
cell body
cell body
neuron
neuron
dendrite
which answer is it?
The correct answer is "cell body." The cell body, also known as the soma, is the component of nerve cells that contains the nucleus. It is responsible for various cellular functions, including protein synthesis and maintenance of the overall structure and function of the neuron.
Which of the following observations could you make based on stimuli to your thermoreceptors?(1 point)
Responses
The ice cream is white.
The ice cream is white.
The ice cream is heavy.
The ice cream is heavy.
The ice cream is cold.
The ice cream is cold.
The ice cream is sweet.
which answer is it?
Responses
The ice cream is white.
The ice cream is white.
The ice cream is heavy.
The ice cream is heavy.
The ice cream is cold.
The ice cream is cold.
The ice cream is sweet.
which answer is it?
The correct answer is "The ice cream is cold." Thermoreceptors are sensory receptors that detect temperature changes. If stimuli are applied to your thermoreceptors, you would be able to observe and perceive that the ice cream is cold.
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)
Responses
Her pupils shrink because the muscles contract.
Her pupils shrink because the muscles contract.
Her pupils grow because the muscles relax.
Her pupils grow because the muscles relax.
Her pupils shrink because the muscles relax.
Her pupils shrink because the muscles relax.
Her pupils grow because the muscles contract.
which answer is it?
Responses
Her pupils shrink because the muscles contract.
Her pupils shrink because the muscles contract.
Her pupils grow because the muscles relax.
Her pupils grow because the muscles relax.
Her pupils shrink because the muscles relax.
Her pupils shrink because the muscles relax.
Her pupils grow because the muscles contract.
which answer is it?
The correct answer is "Her pupils shrink because the muscles contract." When the girl opens her eyes in a brightly lit room, her pupils will automatically constrict or shrink in size. This response is controlled by the muscles of the iris, specifically the sphincter pupillae muscle, which contracts in bright light to reduce the amount of light entering the eye, preventing overexposure and protecting the sensitive structures in the eye.
The human body has four types of tissues. What part of the eye uses muscle tissue for opening and closing movements?(1 point)
Responses
Retina
Retina
Iris
Iris
Cornea
Cornea
Sclera
which answer is it?
Responses
Retina
Retina
Iris
Iris
Cornea
Cornea
Sclera
which answer is it?
The correct answer is "Iris." The iris is the part of the eye that uses muscle tissue for opening and closing movements. The iris contains smooth muscle fibers that control the size of the pupil, adjusting its diameter to regulate the amount of light that enters the eye.
How do polar bears maintain homeostasis in freezing cold weather? (1 point)
Responses
Their thick fur retains heat.
Their thick fur retains heat.
Their metabolism slows down to preserve heat.
Their metabolism slows down to preserve heat.
Their metabolism speeds up to produce heat.
Their metabolism speeds up to produce heat.
Their thick skin insulates the internal organs against the cold.
Their thick skin insulates the internal organs against the cold.
which answer is it?
Responses
Their thick fur retains heat.
Their thick fur retains heat.
Their metabolism slows down to preserve heat.
Their metabolism slows down to preserve heat.
Their metabolism speeds up to produce heat.
Their metabolism speeds up to produce heat.
Their thick skin insulates the internal organs against the cold.
Their thick skin insulates the internal organs against the cold.
which answer is it?
The correct answer is "Their metabolism slows down to preserve heat." Polar bears maintain homeostasis in freezing cold weather by slowing down their metabolism. This helps them conserve energy and preserve heat within their bodies. Slowing down the metabolic rate allows polar bears to adapt to the harsh cold climate and survive in extremely low temperatures.
Which example shows an organism that cannot reach homeostasis through internal changes? (1 point)
Responses
A person gets a fever in response to a flu infection.
A person gets a fever in response to a flu infection.
Circulation decreases in a bird when it becomes too warm.
Circulation decreases in a bird when it becomes too warm.
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.
A dog shivers when it is too cold.
which answer is it?
Responses
A person gets a fever in response to a flu infection.
A person gets a fever in response to a flu infection.
Circulation decreases in a bird when it becomes too warm.
Circulation decreases in a bird when it becomes too warm.
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.
A dog shivers when it is too cold.
which answer is it?
The correct answer is "A lizard is cold, and it moves to a sunny rock to warm up." This example does not involve internal changes for the organism to reach homeostasis. Instead, the lizard relies on an external stimulus (moving to a sunny rock) to warm up and restore its body temperature. The other examples involve internal responses, such as fever, circulation changes, and shivering, to maintain or restore homeostasis.
An eye doctor shines a bright light into a patient's eye. In one to two sentences, explain how the patient's brain perceives the bright light.(2 points)
write it like a 7th grader did it
write it like a 7th grader did it
When a bright light is shone into the patient's eye, the light-sensitive cells in the retina send a signal to the brain. The brain then interprets this signal and makes the patient see the bright light.