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8th grade review
1. Why do cells of unicellular organisms
divide?
To reproduce.
2. Why do cells of multicellular
organisms divide?
To grow or make more cells.
3. What does specialization of cells
mean?
They make systems more efficient or
better.
4. Why do cells need to be specialized?
To do different types of jobs.
5. Cells work together to form
___Tissues (examples: muscle tissue,
connective tissue, nervous tissue,
blood.)
6. ____Tissue’s____________ work
together to form organs.(heart, lungs,
stomach, brain)
7. Organs work together to form
____Organ systems (endocrine,
circulatory, integumentary, muscle,
skeletal)
8. _____Organ
systems________________ work
together to form organisms.
List the organization of living things from
GREATEST to SMALLEST
10. Organisms
11.Organ system
12.Organ
13.Tissue
14.Cell
15. What does the digestive system do?
Breaks down food into nutrients. Nutrients
are absorbed and waste removed.
16. What does the circulatory
(cardiovascular) system do?
Pumps blood which carries nutrients and
gases throughout your body.
Xylem and Phloem in plants act as the
circulatory system in plants.
17. What does the endocrine system do?
Chemical messages that control hormones.
18. What does the nervous system do?
Electrical messages to control body
systems.
19. What does the respiratory system do?
Animals: Uses oxygen and carbon dioxide
for the body.
Plants: Photosynthesis
20. What does the excretory system do?
Removes waste from blood and regulates
body fluids. (organ: Bladder)
21. What does the reproductive system do?
Animals: Produces offspring. (Male and
Female
Plants = Flowers are the reproductive
system. Male and Female parts
22. What does the muscle system do?
Helps you move.
23. What does the skeletal system do?
Support body and protects organs.
24. What does the integumentary system
do? Protects tissue beneath them and
prevents water loss. Skin, hair and nails.
25. What does the lymphatic system do?
Fights bacteria and viruses in your body.
26. Is blood an organ or a tissue?
Blood is a tissue—different types of blood
cells work together.
27. What does structure have to do with
function?
The structure is the arrangement of parts
and function is what those parts do.
The structure is location and function is job.
28. What is the Xylem?
In plants, conducts water and nutrients.
Also provides a bit of support.
29. What is the phloem?
Tube that conducts food through vascular
parts.
30. What is the function of the roots?
To absorb water and nutrients from the soil.
31. What is the function of the stem?
To provide support and some storage.
32. What do leaves do for the plant?
Most photosynthesis occurs in leaves.
33. What organ system in a human is like
the flower of the plant?
Reproductive system
34. What organ system in a human is like
the stem of a plant?
Skeletal system
35. What organ system in a human is like
the xylem and phloem of a plant?
Circulatory (cardiovascular)