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- 1. Multiple Choice
Miranda learned how the human body performs vital functions. What's the most basic level of organization of the human body?
organ
system
tissue
cell
- 2. Multiple Choice
An elephant is a multicellular organism that weighs about 200 pounds at birth and can grow to weigh as much as 15,000 pounds. What increases as the elephant grows into an adult?
the size of each body cell
the number of cells in its body
the amount of energy in its cell
the collection of water in its cell
- 3. Multiple Choice
Jonny climbed an apple tree. How are Jonny and the apple tree similar to each other?
both are made of cells
both take in carbon dioxide
both get nutrients directly from soil
both get energy from other organisms
- 4. Multiple Choice
Which of these is the fundamental unit of life?
system
organ
tissue
cell
- 5. Multiple Choice
Organisms that are classified as multicellular must have:
only one cell
large cells
more than one cell
identical cells
- 6. Multiple Choice
When the heart, blood vessels, kidneys and bladder work together, they are BEST described as
cell
tissue
organism
system
- 7. Multiple Choice
Which of the following indicates the correct representation of the levels of organization in living systems?
ecosystems → organs → organisms → tissues → cells → organ systems
tissues → cells → organ systems → organisms → organs → ecosystems
organisms → tissues → organ systems → cells → organs → ecosystems
cells → tissues → organs → organ systems → organisms → ecosystems
- 8. Multiple Choice
The human brain is an organ that is made up of many tissues. This information can be used to determine that the brain is
unicellular
multicellular
part of a bacterial colony
able to function independently
- 9. Multiple Choice
There are many different types of living cells on Earth. Which of these characteristics do all living cells have in common?
require water for survival
require silicon for structural support
require oxygen for respiration
require sunlight for photosynthesis
- 10. Multiple Choice
If a nerve cell stopped functioning, the cell would
start producing oxygen
begin dividing into more cells
become a different type of cell
stop sending signals to the brain
- 11. Multiple Choice
Stewart studied the parts of a flowering plant. How are all the parts similar?
they all attract bees
they are all made of cells
they all make food for the plant
they all give support to the plant
- 12. Multiple Choice
When athletes begin to exercise, their heart rates and respiration rates increase. At what level of organization does the human body coordinate these functions?
at the tissue level
at the organ level
at the system level
at the cellular level
- 13. Multiple Choice
Muscle cells have the ability to store and release large amounts of energy. Which body function is BEST served by this release of energy?
exchanging gases
moving body parts
absorbing nutrients
sending nerve impulses
- 14. Multiple Choice
The diagram shows two plant cells that work together to perform a function. What is the function of these two plant cells?
transport materials through the phloem tissue
slow the loss of water across epidermal tissue
store carbohydrates produced during photosynthesis
absorb carbon dioxide from the atmosphere
- 15. Multiple Choice
At what level of organization does damage compromise the function of the whole system?
cell
organ
tissue
organelle
- 16. Multiple Choice
Each organ in the digestive system has a specific function. During digestion, food passes from the stomach into the small intestine. Which statement BEST describes what takes place in the small intestine?
Nutrients are absorbed from the food
Wastes are prepared to pass out of the body
Food is churned with acid to break down proteins.
Excess water is reabsorbed into the blood stream.
- 17. Multiple Choice
The brain, spinal cord, and nerves are organs that perform which primary function?
supporting the body and enabling it to move
transporting oxygen, wastes, and nutrients throughout the body
producing male and female gametes
conducting messages to coordinate body functions
- 18. Multiple Choice
Which system of the body is the brain and spinal cord a part of?
nervous
excretory
endocrine
repiratory
- 19. Multiple Choice
Food is digested to the molecular level, absorbed, and then carried to the cells. The dissolved waste molecules produced by the cells are removed primarily from the blood by the
skin
lungs
kidneys
large intestine
- 20. Multiple Choice
The muscles exert force on the body and allow movement to the:
press the tendons
tighten ligaments
stimulate the spinal cord
pull the bones
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