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WorksheetsUnit 2 (Body Systems) Review
Total questions: 25
Worksheet time: 13mins
Which of the following examples includes only chemical changes that occur in the digestive process?
absorption of nutrients by villi in the small intestines
chewing and swallowing food
recycling of water from dissolved food back into the body.
reaction of saliva, stomach acid, bile, and pancreatic juices with food.
A series of physical and chemical changes occur during the process of digestion. Which of the following processes best describes a physical change that occurs during digestion?
stomach acid breaks down proteins
bile breaks down fat
saliva breaking down large molecules into smaller molecules
chewing food to break down large pieces so they can be swallowed
The table below describes some processes in which food is changed as it travels through the digestive system. Which of the processes describe only physical changes in the food particles?
Processes 1, 2, 3, and 4
Processes 1, 3, and 6
Processes 2, 5, and 6
Processes 1, 3, and 4
The human body has specialized organs called glands which collect and process substances from the blood. The concentrated substances are then secreted as hormones to regulate body processes. These specialized organs are part of which body system?
Circulatory
Endocrine
Integumentary
Nervous
Which organ system is responsible for transporting oxygen throughout the organism?
Endocrine system
Respiratory system
Excretory system
Circulatory system
Which step in the digestive process represents a chemical change in food?
Storing of swallowed food in the stomach
Churning of food, liquids, and digestive juices in the stomach
Movement of food down the esophagus to the stomach
Substances in the mouth and stomach breaking down fats and proteins
What is an example of a physical change that occurs during digestion?
Digestive enzymes in the stomach break down proteins into amino acids.
Saliva in the mouth converts starches into simple sugars.
Pancreatic enzymes break down fats into fatty acids.
Teeth grind and tear food into smaller pieces in the mouth.
Two body systems work together to help remove waste products from blood. What are these two systems?
Circulatory and excretory
Skeletal and digestive
Circulatory and integumentary
Muscular and excretory
The main function of the excretory system is to -
produce enzymes to help digest food
collect and remove waste products from the body
prevent disease and fight infections
carry oxygen and nutrients to the body’s cells
Ovaries produce and secrete hormones in addition to eggs. To what human body systems do ovaries belong?
Integumentary and reproductive
Excretory and muscular
Endocrine and reproductive
Nervous and digestive
The main function of the muscular system is -
support of the body
break down of food
movement of the body
removal of waste
Which statement best describes the function of the human body system in the above diagram?
Breaks down food into nutrients and wastes
Supplies oxygen to blood and removes carbon dioxide from blood
Provides support and movement for the body
Produces and secretes hormones which regulate metabolism, growth, and development
Which two body systems represented in the diagram above help the body to break down molecules and absorb nutrients, and exchange oxygen and carbon dioxide?
Respiratory and reproductive
Muscular and skeletal
Digestive and respiratory
Circulatory and endocrine
According to cell theory, what do each of the following organisms have in common?
They can all reproduce by spontaneous generation.
Each organism is able to photosynthesize.
Cells are the basic unit of structure for each organism.
They are all made up of the same kinds of atoms.
Which of the following lists these levels in the correct order of organization from the simplest to the most complex?
Cells, tissues, organs, organ systems, organisms
Organisms, organ systems, organs, tissues, cells
Tissues, cells, organs, organisms, organ systems
Organs, organ systems, organisms, cells, tissues
What are the main functions of the human skeletal system?
To support the body, protect the organs, produce blood cells, and store calcium
To regulate the composition of body fluids by removing metabolic wastes and retaining a balance of water, salt, and other nutrients
To regulate and maintain bodily functions by producing hormones and releasing them into the bloodstream
To enable the diffusion of oxygen into the bloodstream and the removal of carbon dioxide from the bloodstream
This drawing shows a human body system. What is the primary function of this body system?
The protection of vital organs from injury
The chemical breakdown of food into smaller pieces
The transport of nutrients, water, and oxygen to body cells
The production of hormones that regulate growth and metabolism
When people run long distances, their muscles require increased amounts of oxygen. Which system is responsible for carrying this oxygen to the muscles?
Nervous
Respiratory
Digestive
Circulatory
In the 1800s two scientists, Theodor Schwann and Matthias Schleiden, studied different types of organisms. After many years of studying a great variety of organisms, they drew similar but independent conclusions about their observations. What statement was developed most directly from these conclusions and is part of the modern cell theory?
The functions of living things occur in cells.
Cells exist only in multicellular organisms.
Living things are composed of cells.
Cells contain hereditary information.
A student drew the picture of a human body system shown below. The student labeled some of the organs of the system. The main function of this human body system is to —
sense odors in the environment
exchange gases with the environment
chew food as it enters the mouth
trap particles that enter the nose
Which system provides humans with the ability to perceive, understand and react to environmental events?
Circulatory System
Endocrine System
Nervous System
Skeletal System
Which human body system produces the hormones that regulate body functions?
Digestion
Endocrine
Respiratory
Skeletal
What two body systems are most useful in getting nutrients from the food you eat to your brain?
Muscular and endocrine systems
Digestive and nervous systems
Nervous and circulatory systems
Circulatory and digestive systems
Which body system provides protection for tissues and organs, provides structure and frame for the body, and produces new red blood cells?
Nervous
Skeletal
Integumentary
Digestive
What body system is composed of hair, skin, and nails?
Endocrine
Integumentary
Excretory
Immune
