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River Health St. Joseph River Hydrolab EPA

Total questions: 41

Worksheet time: 50mins

Name
Class
Date
1.
Question Image

Match the following with the description.

a)

Measures acidity (0-6.99)/basicity (7.01-14)

1.

pH

b)

Measures speed of particles

2.

Temperature

c)

Measures photosynthesis gas production, what fish need to breathe

3.

Oxygen

d)

Measures greenness of water, needed by plants to do photosynthesis

4.

chlorophyll

e)

Murkiness of water, measure of sediment in water

5.

turbidity

2.

One of the products of photosynthesis that can dissolve in water. Though it is typically hydrophobic and can easy pass through the cell membrane.

a)

carbon dioxide

b)

oxygen

c)

ATP

d)

water

3.

The pH scale is a range from ____ to ____. Too high or low pH's can negatively impact the function of proteins.

a)

1 to 7

b)

0 to 14

c)

1 to 13

d)

1 to 20

4.

A(n) ______ is a substance with a pH less than 7. An example of this is Carbonic.

a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
5.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
6.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
7.

Which list of pHs are in order of increasing H+ ions? (remember low pH means high Hydrogen ion concentration)

a)

6, 9, 12

b)

9, 12, 6

c)

12, 9, 6

d)

9, 6, 12

8.

What is pH a measure of?

a)

Density

b)

Mass

c)

Hydrogen Ion Concentraion (acidity)

d)

Polarity

9.

Which solution releases H+ in solution, they are also have a pH below 7?

a)
Base
b)
Acid
c)
Buffer
d)
Water
10.
A solution with a pH of 8.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
11.

In order to measure turbidity_______________ is required.

a)

Camera

b)

Oxygen

c)

Microwave

d)

Light

12.

Chlorophyll absorbs a higher percentage of _____ and _______ light.

a)

purple and green

b)

red and blue

c)

black and orange

d)

yellow and green

13.

The reactants of photosynthesis are...

a)

sugar and water.

b)

sugar and oxygen.

c)

carbon dioxide and water.

d)

carbon dioxide and oxygen.

14.

What pigment absorbs sunlight for photosynthesis?

a)

chloroplast

b)

thylakoid

c)

grana

d)

chlorophyll

15.

Most plants appear green because chlorophyll...

a)

absorbs green light.

b)

absorbs violet light.

c)

does not absorb green light.

d)

does not absorb violet light.

16.

What pigment absorbs sunlight for photosynthesis?

a)

chloroplast

b)

thylakoid

c)

grana

d)

chlorophyll

17.

The higher the temperature, the more dissolved oxygen in water.

a)

True

b)

False

18.

Which of these can do photosynthesis?

a)

Algae

b)

Seaweed

c)

Trees

d)

All of the above

19.

How do bacteria (non-photosynthetic/not algae) affect Dissolved Oxygen (DO) in water bodies?

a)

increase DO through decomposition

b)

decrease DO through decomposition

c)

DO stays the same

d)

bacteria multiply DO by 8

20.

Colder water.....

a)

hold MORE dissolved oxygen

b)

holds LESS dissolved oxygen

21.

Why does the amount of dissolved oxygen increase during the day?

a)

The sunlight allows photosynthesis to occur

b)

The warmer temperatures allow the water to hold more oxygen

c)

The fish are more active so they are respiring more

22.

What can add dissolved oxygen to the water?

a)

Photosynthesis

b)

Wave and Wind Action

c)

Diffusion from the air above

d)

All of the above

23.

What can REMOVE dissolved oxygen from the water?

a)

cellular respiration

b)

decomposition

c)

warming waters

d)

All of the above

24.

How does low Dissolved Oxygen levels affect organisms?

a)

Organisms may die or have to leave if levels get too low

b)

Organisms go through more cellular respiration

c)

Organisms eat more

25.

Algae blooms will ____________ the amount of dissolved oxygen in an aquatic system.

a)

Decrease

b)

Increase

26.

Based on the enzyme image, what is the most evidence based statement? 

a)

enzymes have very specific shapes to catalyze reactions

b)

the shape of an enzyme has little to no impact on catalyzing reactions

c)

enzyme-substrate complex have various shapes that don't impact the reaction

27.

What happens when enzymes are heated to a high temperature?

a)

The enzymes die.

b)

The shape of the enzyme are changed and it denatures

c)

The enzymes' amino acid sequence changes.

d)

The enzymes remain the same

28.
Based on the graph, what temperature does this enzyme work best? 
a)
15 C
b)
40 C
c)
30 C
d)
47 C
29.
What is the function of an enzyme?
a)
enzymes break themselves into small pieces
b)
enzymes slow down chemical reactions
c)
enzymes speed up chemical reactions
d)
enzymes combine products to form reactants 
30.
What happens to an enzyme when it is denatured?
a)
Activation energy is lowered.
b)
It becomes stronger.
c)
It loses its shape.
d)
Activation energy is raised.
31.
Every enzyme has a optimal temperature and pH. True or False?
a)
True 
b)
False
32.

an animal without a backbone

a)

vertebrate

b)

invertebrate

33.

an animal with a backbone

a)

vertebate

b)

invertebrate

34.

the scientific study of how organisms interact with their environment and all the other organisms that live in that environment

a)

biotic factor

b)

food chain

c)

ecosystem

d)

ecology

35.

If only pollution tolerant bugs are in a river this is a sign that...

a)

the river is polluted

b)

the river is NOT polluted

c)

too little information to determine

36.

A lot of bugs that are susceptible to pollution are found in a river. This is an indication of what?

a)

a highly polluted river

b)

a river with little to no pollution

c)

unable to determine based on the evidence

37.

Finding a right handed snail indicates which of the following?

a)

Low levels of pollution

b)

Moderate levels of pollution

c)

High levels of pollution

d)

Cannot be determined

38.

Based on the image, finding which of the following indicates a more healthy ecosystem?

a)
Group 3 - Fairly Tolerant of Pollution
b)
Group 1 - Very Intolerant of Pollution
c)
Group 2 - Moderately Tolerant of Pollution
d)
Group 4 - Very Tolerant of Pollution
39.

A group of students finds 6 different species of Very intolerant to pollution macroinvertebrates (Group 1). What does this indicate about river health?

a)
The river is healthy and has good water quality.
b)
The river is unhealthy and supports few species.
c)
The river is polluted and has poor water quality.
d)
The river is thriving with a high level of pollution.
40.

After an extensive search, a group of students finds 2 different species of very tolerant to pollution macroinvertebrates (Group 4). What does this indicate about river health?

a)
The river is free from any pollution and supports diverse life forms.
b)
The river may be polluted but still supports tolerant species.
c)
The presence of these species indicates a thriving ecosystem.
d)
The river is completely healthy and supports only sensitive species.
41.

Finding a only rat tailed maggots indicates which of the following?

a)

Low levels of pollution

b)

Moderate levels of pollution

c)

High levels of pollution

d)

Cannot be determined

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