Consumers
A lion is a _______, an organism that gets food by eating other organisms.
consumer
The process that breaks down food into simple materials that an animal’s body can use is called ______.
digestion
After digestion, nutrients are carried to body parts by what body system?
Circulatory system
When an animal dies, the once-living matter from its body is eventually broken down and passes into the ______ and ______.
Soil and air
When an animal eats more food than it needs right away, its body ______ the extra food energy for later.
Stores
An herbivore eats only plants. What is an example of a herbivore?
rabbit, deer, grasshopper, cow
What is the direction food moves through an animal's digestive system?
Mouth → Stomach → Small Intestine → Large Intestine
Which organ pumps blood to the rest of your body?
Heart
What are three types of waste that animals produce?
carbon dioxide waste, dead-animal waste, and solid food waste
What do animals bodies commonly store extra energy for short term use as?
Sugar
A hawk eats a mouse. Name two ways the hawk might use the energy it gets from that meal.
(1) to move/fly/hunt (motion)
(2) to keep warm/maintain body temperature (body repair/growth)
Which organ stores food and uses digestive juices to start breaking it down after the mouth?
stomach
When you eat pizza, the nutrients broken down in the small intestine enter the bloodstream. Which organ pumps the blood that carries those nutrients?
The heart
How does carbon dioxide waste return matter to the ecosystem?
plants/producers take it in during photosynthesis
What do animals bodies commonly store extra energy for long term use as?
fat
Humans get energy from the food they eat. Explain how the energy in a hamburger originally came from the sun. Include at least three steps in the energy pathway.
Sunlight → plants (grass or crops) capture sunlight and make energy by photosynthesis → animals eat the plants and store that energy in their bodies → humans eat plant foods or animals, and digestion releases the stored energy for use.
Where does most nutrient absorption into the blood happen after food leaves the stomach?
Small intestine
Explain how circulation and digestion work together to provide energy for muscle activity during exercise.
Digestive system breaks down food into nutrients, nutrients enter blood in the small intestine, heart and blood vessels deliver nutrients and oxygen to muscles so they can produce energy for movement
Give one reason why animal wastes (like dead animals or solid food waste) are helpful for plants.
They provide nutrients in the soil that plants use to grow
A small bird is getting ready to migrate long distances for the winter. Describe what the bird does with food and energy before the trip and explain how those stores help it during migration.
The bird eats extra seeds and insects to build up fat stores in its body. These fats act like a long-lasting fuel the bird can use while flying many hours without finding food; its digestive system broke the food into nutrients, the small intestine moved them into the blood, and the circulatory system carried those nutrients to cells where they were stored as fat. During migration, the bird converts the stored fat into energy for flight and to keep its body warm.
What part of the digestive system works with what part of the circulatory system to deliver energy from food to body cells? Give a short answer naming both parts and one sentence explaining how they work together.
The small intestine works with the blood. The small intestine absorbs nutrients into the blood which carries those nutrients to body parts so they can use the energy.
Name two things the blood carries to body cells and one thing it carries away from cells.
Blood carries oxygen and nutrients to the body, and carries away carbon dioxide.