Science PSSA Study Session
The diagram below shows a human body system. What are two of the functions performed by this body system? (1) protects and supports the body (2) produces and transports oxygen within the body (3) produces and excretes waste products (4) controls and coordinates body activities
The diagram below shows a human body system. What are two of the functions performed by this body system? (1) protects and supports the body (2) produces and transports oxygen within the body (3) produces and excretes waste products (4) controls and coordinates body activities
2. The main function of the human digestive system is to (1) break down foods for absorption into the blood (2) exchange oxygen and carbon dioxide in the lungs (3) release energy from sugars within the cells (4) carry nutrients to all parts of the body
2. The main function of the human digestive system is to (1) break down foods for absorption into the blood (2) exchange oxygen and carbon dioxide in the lungs (3) release energy from sugars within the cells (4) carry nutrients to all parts of the body
3. Which three systems of the human body function together to move and control body parts? (1) nervous, skeletal, and muscular (2) muscular, endocrine, and excretory (3) digestive, excretory, and reproductive (4) circulatory, endocrine, and respiratory
3. Which three systems of the human body function together to move and control body parts? (1) nervous, skeletal, and muscular (2) muscular, endocrine, and excretory (3) digestive, excretory, and reproductive (4) circulatory, endocrine, and respiratory
(1) respiratory (2) endocrine (3) digestive (4) circulatory 4. The labeled organs in the diagram below are part of which human body system? (1) respiratory (2) endocrine (3) digestive (4) circulatory
(1) respiratory (2) endocrine (3) digestive (4) circulatory 4. The labeled organs in the diagram below are part of which human body system? (1) respiratory (2) endocrine (3) digestive (4) circulatory
The diagram below shows a part of a human body system. 5. The possible movement represented by the arrows in the diagram is coordinated by the (1) circulatory system (2) excretory system (3) nervous system (4) reproductive system
The diagram below shows a part of a human body system. 5. The possible movement represented by the arrows in the diagram is coordinated by the (1) circulatory system (2) excretory system (3) nervous system (4) reproductive system
6. The endocrine system produces chemicals that affect organ functions 6. The endocrine system produces chemicals that affect organ functions. These chemicals are called (1) nutrients (2) hormones (3) microbes (4) wastes
6. The endocrine system produces chemicals that affect organ functions 6. The endocrine system produces chemicals that affect organ functions. These chemicals are called (1) nutrients (2) hormones (3) microbes (4) wastes
7. Running is an activity that causes the cells in the muscular system to use oxygen at a faster rate. Which system responds by delivering more oxygen to these cells? (1) digestive (2) nervous (3) circulatory (4) endocrine
7. Running is an activity that causes the cells in the muscular system to use oxygen at a faster rate. Which system responds by delivering more oxygen to these cells? (1) digestive (2) nervous (3) circulatory (4) endocrine
8. Which human body systems are directly involved in reflex actions, such as knee jerk, blinking, and jumping when startled? (1) circulatory and respiratory (2) digestive and excretory (3) nervous and muscular (4) reproductive and skeletal
8. Which human body systems are directly involved in reflex actions, such as knee jerk, blinking, and jumping when startled? (1) circulatory and respiratory (2) digestive and excretory (3) nervous and muscular (4) reproductive and skeletal
9. In which human body system are hormones produced 9. In which human body system are hormones produced? (1) respiratory (2) endocrine (3) nervous (4) digestive
9. In which human body system are hormones produced 9. In which human body system are hormones produced? (1) respiratory (2) endocrine (3) nervous (4) digestive
10. Which body system is responsible for the elimination of liquid and gaseous wastes? (1) nervous (2) skeletal (3) excretory (4) digestive
10. Which body system is responsible for the elimination of liquid and gaseous wastes? (1) nervous (2) skeletal (3) excretory (4) digestive
11. What is the main function of the circulatory system 11. What is the main function of the circulatory system? (1) secrete enzymes (2) digest proteins (3) produce hormones (4) transport materials
11. What is the main function of the circulatory system 11. What is the main function of the circulatory system? (1) secrete enzymes (2) digest proteins (3) produce hormones (4) transport materials
The diagram below represents a magnified view of an air sac in the human lung. The white arrows indicate blood flow. 12. Which two systems are interacting in this diagram? (1) skeletal and muscular (2) nervous and endocrine (3) reproductive and digestive (4) respiratory and circulatory
The diagram below represents a magnified view of an air sac in the human lung. The white arrows indicate blood flow. 12. Which two systems are interacting in this diagram? (1) skeletal and muscular (2) nervous and endocrine (3) reproductive and digestive (4) respiratory and circulatory
The diagram below shows several organs in the human digestive system. 13. Explain two ways that food is changed as it passes through the digestive system. [2] (1) __________________________________________________________________________ (2) __________________________________________________________________________
The diagram below shows several organs in the human digestive system. 13. Explain two ways that food is changed as it passes through the digestive system. [2] Teeth break up food; Salvia glands release saliva to soften food; Stomach releases acid to break down food; Through the small intestine nutrients are absorbed into the body; Large intestine water is removed from waste and absorbed into the body for hydration
14. Humans sweat when they are in the hot sun 14. Humans sweat when they are in the hot sun. How does sweating help humans to maintain a constant body temperature? [1] ____________________________________________________________________________________________________________________________________________________
14. Humans sweat when they are in the hot sun 14. Humans sweat when they are in the hot sun. How does sweating help humans to maintain a constant body temperature? [1] _Sweat evaporates as the body is cooled
15. The kidneys, which remove dissolved wastes from the blood, are organs of the (1) endocrine system (2) excretory system (3) skeletal system (4) nervous system
15. The kidneys, which remove dissolved wastes from the blood, are organs of the (1) endocrine system (2) excretory system (3) skeletal system (4) nervous system
16. Nutrients from digested food enter the blood stream through the process of (1) absorption (2) elimination (3) respiration (4) secretion
16. Nutrients from digested food enter the blood stream through the process of (1) absorption (2) elimination (3) respiration (4) secretion
17. The two human body systems shown below interact to perform several functions for the whole organism. Describe how gas exchange occurs when the circulatory and respiratory systems work together. [2]
17.The two human body systems shown below interact to perform several functions for the whole organism. Describe how gas exchange occurs when the circulatory and respiratory systems work together. [2] Air is inhaled and enters the lungs. It goes to the alveoli where the absorption of oxygen occurs in the capillaries. The oxygen is carried by red blood cells to body cells for use. Than the red blood flows back to the heart to be directed to the lungs for more oxygen. The loop is repeated.
19. Base your answers to the following questions on the diagram below which shows the process of sexual reproduction. Identify the sex cell shown at A. [1] __________________________________ Identify the sex cell shown at B. [1] __________________________________ Identify the reproductive process that is occurring at C. [1] ___________________________________ Identify the process that is occurring between E and F. [1] __________________________________
19. Base your answers to the following questions on the diagram below which shows the process of sexual reproduction. Identify the sex cell shown at A. [1] _______Sperm Cell___________________ Identify the sex cell shown at B. [1] ________Egg Cell___________________ Identify the reproductive process that is occurring at C. [1] _____Fertilization ___________________ Identify the process that is occurring between E and F. [1] ___________Cell Division_____________
20. When do organs begin to develop in humans 20. When do organs begin to develop in humans? (1) in the sperm cell before fertilization (2) before fertilization and after birth (3) in the egg cell after fertilization (4) after fertilization and before birth
20. When do organs begin to develop in humans 20. When do organs begin to develop in humans? (1) in the sperm cell before fertilization (2) before fertilization and after birth (3) in the egg cell after fertilization (4) after fertilization and before birth
21. The vast variety of different traits found in humans results from (1) intensive training and education (2) sexual reproduction and mutations (3) exercise and conditioning (4) birth defects and recessive genes
21. The vast variety of different traits found in humans results from (1) intensive training and education (2) sexual reproduction and mutations (3) exercise and conditioning (4) birth defects and recessive genes
22. Base your answers to the following questions on the diagram below and on your knowledge of science. The diagram shows a model of sexual reproduction. The lines in each cell represent genetic material (chromosomes). Which letter in the diagram represents a female sex cell? [1] ______________________ Which process is occurring at C? [1] _______________________________ What evidence in the diagram shows that sexual reproduction occurred? [1] ____________________________________________________________________________
22. Base your answers to the following questions on the diagram below and on your knowledge of science. The diagram shows a model of sexual reproduction. The lines in each cell represent genetic material (chromosomes). Which letter in the diagram represents a female sex cell? [1] ______Egg Cell_______________ Which process is occurring at C? [1] _________Fertilization____________ What evidence in the diagram shows that sexual reproduction occurred? [1] _____The final picture (D) is showing 4 pieces of genetic material____________________
23. In which process is oxygen used to release the energy stored in food? (1) photosynthesis (2) respiration (3) digestion (4) reproduction
23. In which process is oxygen used to release the energy stored in food? (1) photosynthesis (2) respiration (3) digestion (4) reproduction
24. In sexual reproduction, what fraction of genes does each parent contribute to the offspring? (1) 1/4 (2) 1/3 (3) 1/2 (4) 3/4
24. In sexual reproduction, what fraction of genes does each parent contribute to the offspring? (1) 1/4 (2) 1/3 (3) 1/2 (4) 3/4
25. Base your answers to the following questions on the diagram below. Select one structure labeled in the human system above and explain how it contributes to the way the human system functions. [1] Human Structure: _________________________________________________________ Explanation: _____________________________________________________________
25. Base your answers to the following questions on the diagram below. Select one structure labeled in the human system above and explain how it contributes to the way the human system functions. [1] Human Structure: ____Heart/ Blood Vessel_______________________________________________ Explanation: ____The heart pumps blood to the body./ Blood vessel allows blood to be transported._
26. Running to escape danger is an action that requires the nervous system to coordinate the interaction of which two body systems? (1) digestive and endocrine (2) muscular and skeletal (3) reproductive and excretory (4) circulatory and digestive
26. Running to escape danger is an action that requires the nervous system to coordinate the interaction of which two body systems? (1) digestive and endocrine (2) muscular and skeletal (3) reproductive and excretory (4) circulatory and digestive
27. What are produced in both the male and female reproductive systems in humans? (1) sperm (2) nutrients (3) fertilized eggs (4) sex cells
27. What are produced in both the male and female reproductive systems in humans? (1) sperm (2) nutrients (3) fertilized eggs (4) sex cells
28. The interaction of the skeletal and muscular systems to produce locomotion is coordinated by which human body system? (1) circulatory (2) excretory (3) nervous (4) respiratory
28. The interaction of the skeletal and muscular systems to produce locomotion is coordinated by which human body system? (1) circulatory (2) excretory (3) nervous (4) respiratory