Vocabulary
If you examine the structure of a root system, you will see that its growing tips are covered with fine __________.
root hairs
This process is the movement of substances from areas of high concentration to low concentration.
Diffusion
What is one disadvantage of a unicellular organism?
1. Can't grow very large.
2. Can only live in watery, food rich surroundings because it has to carry out all the functions needed to stay alive.
Plants have 2 main systems. What are they?
1. Root System - obtain water and nutrients from soil, anchor the plant into the ground.
2. Shoot System - make food for the plant.
The organ that is part of the digestive system, and the main location where nutrients are absorbed is the __________.
small intestine
Cells having different structures and appearances and performing different functions are said to be __________.
specialized
What type of permeability does a brick wall have?
Impermeable
What is one advantage of a multicellular organism?
1. Can live in a wide variety of environments.
2. Able to grow very large.
3. Specialized cells form different functions.
Name 3 of the body systems in humans.
1. The Digestive System
2. The Respiratory System
3. The Circulatory System
4. The Nervous System
5. The Excretory System
The system associated with diseases such as heart attack. stroke, and high blood pressure.
The Circulatory System
Groups of different tissues form __________.
organs
Explain osmosis.
The diffusion on water through a selectively permeable membrane.
Cells with the same structure and function are grouped into __________.
tissues
Filtering waste materials from the blood is the main function of the __________ system.
excretory
The system that is most affected by poor diet.
The Digestive System (the circulatory system is a close second)
The smallest type of blood vessel that connects arteries and veins is called __________.
capillaries
What is transpiration?
The loss of water from a plant through evaporation.
Cells are arranged into levels of organization. Name 3.
1. Cells
2. Tissue
3. Organs
4. Systems
5. Organisms
A sharp tap at the knee causes a signal to be sent to the spinal cord. A return signal causes the leg to react. What system is involved with this?
The Nervous System
What are 4 things you could do to keep your body systems healthy?
1. Exercise
2. Sleep
3. Healthy diet
4. Drink lots of water
5. Any other acceptable/reasonable answer
A tiny air sac in the lungs is called an __________.
alveoli
What are the two types of vascular tissues found in plants and what are their functions?
Phloem - transports sugars from the leaves to the rest of the plant.
Xylem - conducts water and minerals from root cells and moves it to the rest of the plant.
The type of tissue that protects the outside of a plant is called __________ tissue.
epidermal
Blood pressure indicates several things about the health of the circulatory system. List 3.
1. The volume of blood
2. Heart rate
3. Artery size
4. Artery elasticity
5. Blood viscosity
Explain how the respiratory system and the circulatory system are related.
Oxygen we breath in is transferred into our blood stream from the alveoli into capillaries which is moved around the body in the circulatory system.