Cells
What does the mitochondria do?
Provide the cell with energy
What process makes gases travel in and out of capillaries?
Diffusion
What does the stomach do?
Digests food chemically
Draw the small intestines
Answers will vary
Give an example of diffusion
Perfume, gasses travelling through capillaries
What does the cell membrane do?
What is the function of the nervous system
- receives sensory info
- processes info
- controls movements
What are 3 differences between arteries and veins?
Arteries = thicker, oxygen, away from heart
Veins = thinner, carbon, towards heart
Draw a diaphragm
Muscle under lung
List 2 things that are semipermeable
Filter, cell membrane, egg membrane
What is an advantage of multicellular organisms over unicellular?
specialized cells allowing them to live in multiple environments and have better survivability
What is the pathway for air?
Nasal cavity, trachea, bronchi, bronchioles, alvioli, capillaries
Fill in the blanks
cells --> ____ --> organs --> ____
cells --> tissue --> organs -->systems
Draw an alveoli surrounded by blood vessels and label the carbon dioxide and oxygen
Carbon dioxide leaves pulmonary artery and enters alveoli
Oxygen leaves alveoli and enters pulmonary vein
What do 6 living things have in common?
Grow, adapt, respond to enviro, reproduce, acquire energy, made of cells
What do plant cells have that is bigger than animal cells and why?
Vacuoles - food/water storage
Name 3 parts in the excretory system
Kidney, ureter, bladder, urethra, skin, sweat glands
How is the mouth involved in the digestion of food?
Mechanical (chewing) and chemical (saliva)
Draw a nerve cell
Answers will vary
What does the revolving nosepiece do?
Changes the magnification of a microscope
What are 2 organelles that only exists in plant cells and what do they do?
Chloroplast
Cell wall
Describe 2 things specific to the pulmonary artery
- goes away from the heart
- carries CO2
- does not carry oxygen
What is the purpose of the epiglottis?
Separates the trachea from the esophagus so you don't choke on food
Draw a cell that has been placed in distilled water for a day
Cell is swollen due to osmosis and water entering the cell
Explain why a cell would shrivel up if placed in salt water
Due to having a lower water concentration in the saltwater, water from the cell would exit the cell through osmosis to achieve balance through osmosis, solutes (salt) would not move