What is a thin cell covering that hold the parts of a cell together called?
What is a cell membrane.
100
What are organs that work together to perform a specific function called?
What is a system.
100
The circulatory system transports blood through various-sized tubes called arteries, veins, and _________.
What is capillaries.
100
Bones are attached to each other in places called _________.
What is joints.
100
Plants and animals grow when cells a) reproduce b) release energy c) get rid of wastes d) repair themselves
What is a) reproduce
200
What is the movement of water and dissolved materials through a cell membrane called?
What is an osmosis.
200
What is the process by which particles of a substance move from an area where there are many particles of the substance to an area where there are fewer particles of the substance called?
What is diffusion.
200
The smallest tubes end in tiny sacs called _____________.
What is alveoli.
200
Tough bands of tissue called _______ attach bones to muscles.
What is tendons.
200
An animal's skin is an example of a) connective tissue b) muscle tissue c) epithelial tissue d) nervous tissue
What is c) epithelial tissue
300
What are tissues that work together called?
What is an organ.
300
What is the basic structure and function of all living things called?
What is a cell.
300
Nutrients move from the digestive system into the blood by traveling through _________.
What is villi.
300
Other bands of tissues called _________ attach bones to each other.
What is ligaments.
300
Oxygen enters the body through the a) digestive system b) respiratory system c) circulatory system d) excretory system
What is b) respiratory system
400
What is an organelle that controls a cell's activities called?
What is a nucleus.
400
What are specialized cells that transmit and receive nervous system signals called?
What is neurons.
400
In the body's excretory system, urea and water travel from the blood into the kidneys and diffuse into _________.
What is nephrons.
400
Which of the following allows water to flow into the roots of plants? a) cytoplasm b) mitochondria c) osmosis d) vacuoles
What is c) osmosis
400
Oxygen travels to every cell in the body through the a) respiratory system b)circulatory system c) digestive system d) excretory system
What is b) circulatory system
500
What is the jellylike substance that contains many chemicals to keep a cell functioning called?
What is cytoplasm.
500
Some type of nerve cells called _________ can detect conditions in the body's environment.
What is receptors.
500
Bones have a hard outer membrane and a soft center that contains __________.
What is bone marrow.
500
Osmosis is one kind of a) active transport b) organelle c) carrier d) diffusion
What is d) diffusion
500
Which of the following is a ball and socket joint? a) knee b) elbow c) hip d) toe