A physical change occurs in the digestive system when —

teeth break down and grind food particles

Energy obtained by an organism when it consumes food is –

transformed into other forms of energy

In which of the following scenarios is chemical energy being transformed into thermal energy?

A lion’s temp increases as it uses energy it gets from food

Which of the following is an example of a chemical change during digestion?

Protein is broken down into amino acids in the stomach.

An external stimulus that may cause a dog to fight could be...?

The dog finding a good food source

Which of the following changes, during digestion, indicates a chemical change has occurred?

Saliva changes carbohydrates into sugars

Which of the following is an example of a physical change during digestion?

Food is squeezed into a different form when in the esophagus

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Human Body Systems MHMS 1

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Human Body Systems Review

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Questions 18

Answers

1
A physical change occurs in the digestive system when —
Saliva change complex carbohydrates into simple sugars.
teeth break down and grind food particles
pancreatic enzymes change fats into fatty acids
stomach juices convert proteins into amino acids.
2
Which of the following organisms transforms radiant energy into chemical energy?
deer
grass
butterfly
mouse
3
Balance or equilibrium within an organism is
environment
homeostasis
internal stimuli
external stimuli
4
Which of the following energy transformation takes place during digestion?
chemical to mechanical
mechanical to chemical
solar to chemical
thermal to mechanical
5
Energy obtained by an organism when it consumes food is –
absorbed into the bloodstream
transformed into other forms of energy
passed through the body as waste
completely used during digestion.
6
In which of the following scenarios is chemical energy being transformed into thermal energy?
A squirrel uses the energy in seeds to build parts in body
A lion’s temp increases as it uses energy it gets from food
A fish is able to swim using the energy it gets from eating
A tree gets sunlight to produce the sugars it uses for food
7
Animals are heterotrophic and move. Cellular respiration in their cells transforms energy from
nuclear to mechanical
mechanical to electrical
radiant to chemical
chemical to mechanical
8
Which of the following is an example of a chemical change during digestion?
Protein is broken down into amino acids in the stomach.
Teeth tear and grind food in the mouth into smaller pieces.
Muscles in the esophagus move food toward the stomach.
Water is absorbed into the blood in the large intestine.
9
Which of the digestive structures in the table can cause a chemical change to occur?
teeth
stomach
esophagus
tongue
10
An external stimulus that may cause a dog to fight could be...?
The dog becoming tired
The dog growing from a pup to an adult
The dog finding a good food source
The dog getting sick
11
Which of the following changes, during digestion, indicates a chemical change has occurred?
Ice cream melts in the mouth
Teeth crushes the food, changing the way it looks
Saliva changes carbohydrates into sugars
The tongue shapes chewed food into a ball
12
Animals can move as a result of what energy conversion?
radiant to chemical
heat to mechanical
chemical to mechanical
mechanical to kinetic
13
Stimuli that occur outside the body of an organism
Internal stimuli
environment
homeostasis
external stimuli
14
Mammals maintain a constant body temperature by converting -
electrical to mechanical
radiant to thermal
chemical to thermal
chemical to electrical
15
Stimuli that come from inside of an organism
homeostasis
environment
external stimuli
internal stimuli
16
Plants are autotrophic and use radiant energy to make food for themselves through
photosynthesis
decomposition
homeostasis
cellular respiration
17
Energy in food creates signals sent by the brain to muscles, which energy conversion is it?
chemical to electrical
thermal to electrical
mechanical to chemical
radiant to thermal
18
Which of the following is an example of a physical change during digestion?
acid breaks down carbs, proteins, and fats in stomach
Enzymes break down fat drops into fatty acids and glycerol
Starch is changed into maltose in the small intestine
Food is squeezed into a different form when in the esophagus

Human Body Systems MHMS 1 Flashcards | StudBud