Unit 2 Test Review Part 1 Question Preview (ID: 39554)


Unit 2 Human Body Systems And Homeostasis. TEACHERS: click here for quick copy question ID numbers.

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

Which step in the digestive process represents a chemical change in food?
a) Substances in the mouth and stomach breaking down fats and protiens
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

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 of the following scenarios is a logical example of the evolutionary fight or flight response?
a) A student witnesses a fight on the school bus.
b) Someone is punched in the face and hits back.
c) Parents demand that chores be done completely.
d) The principal decides that everyone must attend study hall.

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 his body.
c) It causes evaporation and saves body heat.
d) It washes off his skin.

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 person develops an elevated body temperature from a bacterial infection. This fever is a response from the body to help fight the 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.

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 student is implementing an investigation to see how earthworms respond to light. Which piece of scientific equipment would be the most appropriate for containing the earthworms for observation?
a) petri dish
b) graduated cylinder
c) flask
d) beaker

Which of the following increases in blood during exercise?
a) carbon dioxide level
b) oxygen level
c) red blood cells
d) hemoglobin

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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