Science Flashcards
What is a cell that has no nucleus called?
Prokaryote.
What is a cell that does have a nucleus and cell membrane called?
Eukaryote.
What is an organism that makes its own food called?
Autotroph.
What is an organism that must eat other things for energy called?
Heterotroph.
How are body cells made for growth and repair made?
Mitosis.
How are gametes (sex cells) made?
Meiosis.
Where is the sternum located?
At the center and front of your chest.
What is the skeletal system made of?
Bones, joints, cartilage.
What does yellow bone marrow do?
Store fat.
What does red bone marrow do?
Produce red blood cells.
What is a skeletal muscle?
A voluntary, striated muscle that is attached to your bone.
Are muscles the only type of tissue that can contract?
Yes.
What is a cardiac muscle?
The heart-involuntary and striated.
What is fast twitch for?
Fast movements, reflexes.
What is an example of a smooth muscle?
Stomach, intestines, uterus
What is slow twitch used for?
Leaning, posture, sitting.
What is included in the nervous system?
Spinal cord, brain, nerves.
What is a stimulus?
A reaction to what is going on in the environment around you.
What does the nervous system do?
Sends signals to your body on how to react based on what is going on around you.
What is a nerve cell called?
Neuron.
What is the difference between the central and peripheral nervous systems?
Central is brain and spinal cord, while peripheral is everything else.
What is the difference between somatic and autonomic systems?
Somatic is voluntary, while autonomic is involuntary.
What is an example of the integumentary system?
Skin, hair, nails, special glands, nerves.
How does skin protect us?
Shock absorption and keeping germs out and insides in.