Unit 8 Review: Question Preview (ID: 23989)


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Which two body systems help the body to break down molecules and absorb nutrients, and exchange oxygen and carbon dioxide?
a) respiratory and reproductive b) muscular and skeletal c) digestive and respiratory d) circulatory and endocrine
The main function of the muscular system is
a) to support the body. b) to break down food. c) movement of the body d) removal of waste
Which statement best describes the function of the respiratory system?
a) breaks down food into nutrients and wastes b) supplies O2 to the blood, which in turn, delivers O2 to all parts of the body c) provides support and movement for the body d) produces and secretes hormones which regulate metabolism, growth and development
The largest human body organ, which regulates temperature and serves as a barrier against harmful microorganisms, belongs to the -
a) circulatory system b) nervous system c) digestive system d) integumentary system
Ovaries produce and secrete hormones in addition to eggs. To what human body systems do ovaries belong?
a) integumentary and reproductive b) excretory and muscular c) endocrine and reproductive d) nervous and digestive
What is the major role of red blood cells in the circulatory system?
a) carry nutrients and oxygen to body cells b) prevent disease and fight infections c) carry digestive juices to the stomach d) send chemical messages to the nervous system.
Two body systems work together to help remove waste products from blood. What are these two systems?
a) circulatory and excretory b) skeletal and digestive c) circulatory and integumentary d) muscular and excretory
The nervous system of the human organism is MOST like which cell organelle?
a) mitochondrion b) nucleus c) chloroplast d) cell membrane
The main function of the excretory system is to
a) produce enzymes to help digest food. b) collect and remove waste products from the body. c) prevent disease and fight infections. d) carry oxygen and nutrients to the body's cells.
Which of the following adaptations helps birds fly?
a) They have more fat than most animals, so they can fly for long distances. b) They have hollow bones, so they are lighter. c) They have smaller blood vessels, so their hearts have to work less in flight. d) They have a larger stomach, so they can absorb food faster.
How do the gills of fish help their survival?
a) Gills allow fish to break down water into oxygen and hydrogen. b) Gills allow fish to process energy quicker so they can move faster. c) Gills allow fish to breathe in air and water. d) Gills allow fish to use the oxygen dissolved in water.
Many birds, such as the barn swallow, have hollow bones, while a few birds, such as the ostrich, have solid bones. Which best explains this adaptation that are seen in birds?
a) Hollow bones allow for a lighter body weight for flight. b) Larger birds need solid bones to hold the weight when standing. c) Solid bones are an advantage because hollow bones are too brittle. d) Hollow bones allow for more space for making more red blood cells.
A woman running in a marathon requires a constant supply of oxygen to her muscles. Which cells carry oxygen to muscle tissue?
a) artery cells b) red blood cells c) nerve cells d) lung cells
The three major parts of the circulatory system are the heart, the blood vessels, and the blood. The heart is an organ made of specialized cells. Which of these functions can the heart perform that individual cells cannot?
a) pumping blood b) producing waste c) using energy d) growing larger
The human body has specialized organs which collect and process substances from the blood. The concentrated substances are then secreted as hormones to regulate body processes. These specialized organs are called-
a) ducts. b) glands. c) organelles. d) nodes.
Which science tool would be appropriate for the close observation of the inside of a bird bone?
a) thermometer b) petri dish c) hand lens d) balance
What purpose does the xylem in a plant serve?
a) transportation of food and nutrients b) transportation of water and minerals c) anchors the plant in the ground d) transforms energy through photosynthesis
What two systems contain the alveoli and capillaries?
a) integumentary - excretory b) digestive - circulatory c) nervous - endocrine d) respiratory - circulatory
What process happens between the alveoli and capillaries?
a) photosynthesis b) gas exchange c) pumping blood d) gas deposition
What is the original source of O2 in the alveoli?
a) heart b) inhaled air c) nasal passages d) exhaled air
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