Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
36 Cards in this Set
- Front
- Back
|
What are the most common elements in the human body system?
|
Remember: CHNOPS
Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Sulfur |
|
|
What is diffusion?
|
This is the process by which molecules move from an area that is highly concentrated to an area that is less concentrated. Think about putting food coloring in a bowl of water, the color then spreads to all the water in the bowl.
|
|
|
What are two examples of diffusion?
|
1. In the small intestines, the body uses diffusion to get nutrients from food by absorbing them through the villi which absorb the nutrients into the bloodstream through the capillaries.
2. In respiration, the lungs in the body have the alveoli that absorb oxygen through diffusion. |
|
|
What is the word equation for photosynthesis?
|
6 water molecules and 6 C02 molecules use light energy to make sugar and 6 O2 molecules
|
|
|
What is the word equation for respiration?
|
6 oxygen molecules plus sugar makes 6 water molecules and 6 CO2 (carbon dioxide)
|
|
|
What are tissues that contract and shorten?
|
Muscles
|
|
|
What are the most common elements in the human body system?
|
Remember: CHNOPS
Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Sulfur |
|
|
What 6 characteristics do UNICELLULAR organisms have in common with MULTICELLULAR organisms?
|
1. Both need oxygen and do respiration.
2. Both have an input and an output. 3. Both need energy 4. Both reproduce 5. Both adapt to their environment 6. Both grow and develop 3 |
|
|
What are protein molecules that slow and speed up cell functions?
|
Hormones
|
|
|
What do digestive enzymes do?
|
Digestive enzymes break down food.
|
|
|
Where is energy released in a cell?
|
Mitochondria
|
|
|
How are atoms, molecules, and cells related?
|
Atoms make molecules, molecules make cells, and cells use atoms and molecules for food and cell parts.
|
|
|
What does cell theory tell us?
|
All things are made of cells and they make other cells.
|
|
|
What is the name for the process of diffusion of water molecules?
|
Osmosis
|
|
|
What part of the body in the small intestines allows us to get the nutrients from food?
|
Villi
|
|
|
What part of a plant cell captures energy from the sun to make sugar?
|
Chloroplasts
|
|
|
What part of the cell makes proteins?
|
Ribosomes
|
|
|
What part of the cell is the gatekeeper that allows things to enter and exit a cell?
|
Cell membrane
|
|
|
What part of the cell is the brain or control center that controls cell functions?
|
Nucleus
|
|
|
What is the clear part of the blood?
|
Plasma
|
|
|
What body systems contains blood and plasma?
|
Circulatory System
|
|
|
What body sytems breaks down food and absorbs nutrients?
|
Digestive System
|
|
|
What body system uses hormones to affect the body?
|
Endocrine System
|
|
|
What body system gets allows the kidneys to get rid of waste and urine?
|
Excretory System
|
|
|
What body sytem includes the brain and a network of nerves to sense and control body movements?
|
Nervous System
|
|
|
In what body sytem does plasma drain through these nodes to remove waste from the bloodstream?
|
Lymphatic System
|
|
|
What body system allows white blood cells to fight disease and illness in the body?
|
Immune System
|
|
|
What body system allows the body to make babies?
|
Reproductive System
|
|
|
What body sytem allows the body to take in oxygen and release carbon dioxide?
|
Respiratory System
|
|
|
What body sytem supports the body, protects it, and works with muscles to help us to move?
|
Skeletal System
|
|
|
Why do multicellular organisms need body sytems?
|
They need body systems to supply the body with food and nutrients and to get rid of waste.
|
|
|
What is homeostasis?
|
It is the body's ability to maintain a stable internal environment like our body temperature always being 98.6 degrees.
|
|
|
What are two examples of homeostasis?
|
1. We sweat to cool down our bodies when we are hot.
2. We shiver to heat up our bodies when we are cold. |
|
|
When we exercise, our heart rate increases because our body needs more __________.
|
Oxygen
|
|
|
What is active transport?
|
It is a way we move materials through our body using ENERGY. It is different from diffusion because diffusion happens WITHOUT ENERGY being used.
|
|
|
What part of the lungs allows us to get oxygen to the body through diffusion?
|
Alveoli
|
