Unit 2 Human Body Systems Part 1 Question Preview (ID: 44239)
Systems.
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A student is implementing an investigation to see how earthworms respond to light. Which piece of scientific equipment would be most appropriate for containing the earthworms for observation?
a) petri dish
b) graduated cylinder
c) beaker
d) flask
Which of the following increases in blood during exercise?
a) carbon dioxide levels
b) glucose
c) red blood cells
d) hemoglobin
Riding a bicycle requires additional energy from leg muscles. Which of the following conditions may result from this activity, and which response helps restore the body to its normal condition?
a) Increased carbon dioxide in the blood can be removed by breathing faster.
b) Decreased oxygen can be replaced by digesting an apple.
c) Increased sugars in the blood stream can be diluted by drinking water.
d) Increased salt wastes can be removed by the heart pumping faster.
A person develops an elevated body temperature from a bacterial infection. This fever is a response from the body to help fight infection by -
a) slowing the growth of the bacterial infection.
b) increasing the amount of water in the body.
c) increasing the body's heart rate.
d) stopping additional bacteria from entering the body.
A basketball player helps maintain stable body temperature during the game by perspiring. The sweat helps cool his body by evaporating. What is this an example of?
a) homeostasis
b) mitosis
c) respiration
d) digestion
A student is outside on a very hot day. How does perspiration help maintain a safe body temperature?
a) It causes evaporation and carries away body heat.
b) It prevents excess heat by the sun from entering the body.
c) It causes evaporation and saves body heat.
d) It washes off of his skin.
Which of the following scenarios is a logical example of the evolutionary fight or flight response?
a) Someone is punched in the face and hits back.
b) A student witnesses a fight on the school bus.
c) Parents demand that chores be done completely.
d) The principal decides that everyone must attend study hall.
Carbohydrates are large, complex molecules that can be broken down into smaller molecules called-
a) sugars
b) fats
c) energy
d) vitamins
A student eats a slice of pizza for dinner. What represents a physical change in the pizza?
a) Teeth tearing off a bite of pizza
b) Saliva changing the starch in the pizza crust to sugar
c) Chemicals in the stomach digesting proteins
d) Breaking down of fats in the pizza by bile
Which step in the digestive process represents a chemical change in food?
a) Substances in the mouth and stomach breaking down fats and proteins
b) Storing of swallowed food in the stomach
c) Churning of food, liquids, and digestive juices in the stomach
d) Movement of food down the esophagus to the stomach
Which of the following includes only chemical changes that occur in the digestive process?
a) Reaction of saliva, stomach acid, bile, and pancreatic juices with food
b) Absorption of nutrients by villi in the small intestines
c) Chewing and swallowing food
d) Recycling of water from dissolved food back into the body
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?
a) endocrine
b) circulatory
c) integumentary
d) nervous
Ovaries produce and secrete hormones in addition to eggs. To what human body systems do ovaries belong?
a) endocrine and reproductive
b) integumentary and reproductive
c) excretory and muscular
d) nervous and digestive
What type of cell in human blood is responsible for carrying oxygen throughout the body?
a) red blood cells
b) white blood cells
c) platelets
d) plasma
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 heart cells cannot?
a) pumping blood
b) producing waste
c) using energy
d) growing larger
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