7th Grade Science

1st Semester Review

Lab Safety

1. Explain the importance of lab safety when conducting experiments in the class room.

2. List at the minimum 3 types of lab safety equipment and describe their function.

Scientific Process

3. The scientific process is a series of steps designed to aid a scientist through the experimentation process. Choose the answer with the correct order.

a) Formulate a conclusion, research the problem test the hypothesisb) Design the experiment, identify the problem, analyze the resultsc) Develop a hypothesis research the problem, formulate conclusionsd) Identify a problem, test the hypothesis, formulate conclusions

Scientific Process

4. This variable depends upon what is done to it by the independent variable.

A)manipulatedB)ExtraneousC)DependentD)all of these

5. These variables are those that are created by the researcher. These are typically found in experimental studies.A)ExtraneousB)ManipulatedC)DependentD)none of these

Characteristics of Living Things

Fill in the blank:6. All living things_______ to continue life.7. All living things contain ____ located in the

nucleus of a cell.8. All living things _____ to their environment.9. All living things regulate temperature to

maintain ________.

Cell Theory

10. Use your note book and list the 3 concepts of cell Theory.

Prokaryote vs. EukaryoteProkaryotes:•First cells to evolve•Contain NO nucleus•DNA is found within the cytoplasm

Eukaryotes:•Evolved from prokaryotes•HAVE a nucleus•DNA is found within the nucleus

11. List One Example of each type of cell.

Levels of organization

12.Use the Diagram to the Right and fill in the missing levels of organization.

13. Give an example of each level of organization.

Cells

Organs

Organism

Animal Cell

15. Draw and label diagram.

Plant Cell

15. Draw and label diagram.

Cell Organelles16. Write the function of the following organelles:

ORGANELLE FUNCTION ANIMAL CELL, PLANT CELL , or BOTH

Cell MembranechloroplastVacuolenucleusmitochondriaCell walllysosomeGolgi ApparatusribosomecytoplasmEndoplasmic Reticulum

Cell Organelles

17. What is an organelle? What do organelles do?

18. Which organelles are only found in plant cells?

Analogies

19. Make an analogy between the following organs and cell organelles.

a) The Bladder is like the ______in a plant cell because __________.

b) The brain is like the _______ in a cell because_______.

c) The skin is like the ________of a cell because _________.

Body Systems

20. List the organs and function of the body systems listed below:

SYSTEM ORGANS/STRUCTURES FUNCTION/JOB

CIRCULATORY

RESPIRATORY

DIGESTIVE

ENDOCRINE

INTEGUMENTARY/SKIN

REPRODUCTIVE

EXCRETORY

Excretory system21. Use the diagram to the right to describe the function of the following organs of the excretory (urinary) system.a) Kidneys:__________b) Ureters:__________c) Bladder:__________d) Urethra:__________

Digestive System22. What is the main function of the digestive system?23. What is the difference between mechanical and chemical digestion; include the location in the digestive system for each.24. Where does digestion begin?25. Which organ pictured is responsible for absorbing most of the nutrients found within your food?26. Which organ pictured is responsible for absorbing excess water?

Skeletal System27. What is the function of the skeletal system?

28. Where are red blood cells made?

29. What is the purpose of cartilage?

30. What is the largest bone in the human body?

Skeletal System31. Identify the 4 types of joints seen to your right.a)

b)

c)

d)

Muscular System32. Identify the 3 types of muscle to your right and state whether or not the control is voluntary or involuntary.a)

b)

c)

Circulatory and Respiratory System

33. What is the primary function of the Circulatory system?

34. Where does gas exchange occur?

35. How do these two systems work together?

Circulatory System36.The parts of the human

blood are shown in the vile diagram to your right. Write the function of each component.

a) Plasma:___________________

b) White blood cells:___________

c) Platelets:__________________

d) Red blood cells:_____________

Nervous and Endocrine system37. What is the function of the nervous system?

38. What is the function of the endocrine system?

39. How do these two systems work together to sustain life and regulate homeostasis?

40. What are hormones and how do they help the body maintain homeostasis?

Reproductive System41. Use the word bank below to label the female reproductive System.

WORD BANK

cervixvagina

uterus fallopian tube

Ovaryovum

Reproductive system42. Use the word bank below to label the male reproductive diagram.

Word BankScrotumepididymusUrethraProstatevas deferensPenistesticlebladder*rectum*

Reproductive System

43. What is the function or purpose of the reproductive system?44. What is produced by the testes?45. Do male or females have testes?46. What is produced by the ovaries?47. Do male or females have ovaries?48. What are gametes?49. When does fertilization occur?50. How does the reproductive and endocrine system work together?

Integumentary System

51. Name 3 functions that the integumentary system provides.

52. Explain how the excretory, integumentary, respiratory , and the digestive system are similar?

Lung Model53. What is the function of the respiratory system and what are some of the limitations of this model?

54.

Stimulus and Response

55. Explain what the “fight or flight” response means?

56. Label the 3 pictures to your right phototropism, geotropism, or hydrotropism.

57. Use picture 4 and explain the concept of turgor pressure.

Picture 1

Picture 2

Picture 3Picture 4

Waste Removal and Energy Extraction58. Explain how the organelles of a cell compare to the body to remove waste and extract energy?59. Define photosynthesis.60. Use the diagram to explain the waste removal equates energy for other organisms.61. What is needed for photosynthesis to occur? What is the product of Photosynthesis?

Energy Transformation

62. In what order do energy transformations occur during digestion?

a) Radiant to thermal to chemicalb) Chemical to mechanical to thermalc) Thermal to chemical to mechanicald) Chemical to chemical to chemical

63. Where does radiant energy come from?

64. Radiant energy turns into what other type of energy?

CO2 + H2O C6H12O6 +O6

65. What is the process the equation above is describing?

66. What is needed for this process to occur?

Radiant Energy

Organic Compounds

67. Which compound is an organic compound? Write yes if it is No if it is not

a) C6H12O6

b) H20c) KNO3

d) CuCl2

68. Which statement is true about organic compounds?e) Organic compounds are only present in plantsf) Organic compounds cant be recycled into the environmentg) Organic compounds must contain carbonh) Organic compounds are only found in expensive food

Physical and chemical change

Change P to indicate physical C to indicate chemical

Cracking eggs

Baking a cake

Ice melting

Burning toast

Slicing bread

Rusting nails

Frying eggs

Burning toast

Mowing lawns

Apple turning brown

69. What is the difference between a physical and chemical change?

70. Use the chart and place a P to indicate a Physical change and C for chemical change.

Molecular Breakdown

71. The digestive system breaks down substances into smaller molecules to used as energy. Fill in the blanks below:

• Carbohydrates are broken down into__________• Fats or lipids are broken down into_________• Proteins are broken down into__________

72. Identify the following foods as carbohydrate ( C ) or Protein (P)

Eggs___ Bread____ Chicken ____ Potato____ Cabbage ____ Milk______

Genetics73. Use the diagram to the right and explain the function of each component .

Punnett Squares

77.In a certain species of plant, the color purple (P) is dominant to the color white (p). According to the Punnett Square, what is the probability of an offspring being white? a) 25%b) 0%c) 75%d) 100%

74. What is a punnett square?

75. What Is a dominant gene?

76. What is meant by the term phenotype?

HeredityTRAIT Place an I for

inherited or A for Acquired

Hair Color

Cooking Skills

Riding a bike

Freckles

Dimples

baldness

78.What is heredity?What is the difference between an acquired and an inherited trait?79. Using the chart below determine whether each trait is either inherited or acquired.

Adaptations80. What is an adaptation?81. What is a structural adaptation?82. What is a behavioral adaptation?83. What is a physiological adaptation?84. Match each picture with its adaptation: Structural, Behavioral, or Physiological

Picture 1

Picture 2

Picture 3Picture 4

Picture 5Picture 6

Bonus**** Use the diagram of the cell city to identify as many cell organelle analogies as possible.