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Energy Flow Review & CER Writing

Total questions: 20

Worksheet time: 15mins

Name
Class
Date
1.

In the chemical formula for glucose, how many of each elements are there

a)

C=6, H=12, O=6

b)

C=6, H=6, O=12

c)

C=6, H=6, O=6

d)

C=12, H=12, O=12

2.

Identify the correct statement(s) regarding ENZYMES.

a)

Helps to reduce the activation energy.

b)

Helps to speed up the chemical reaction.

c)

Example of a protein macromolecule.

d)

All are correct

3.

The length of an animals digestive system could indicate the type of consumer it is. If the average herbivores digestive system measures 2500 cm and a carnivore 200 cm. Identify what the average omnivore's digestive system would be

a)

3000 cm

b)

850 cm

c)

160 cm

d)

None are correct

4.

A zoologist needed to identify a recent animal that was hunted and slaughtered by poachers. The only evidence they had available to go by are the sharp incisors, canines, molars & the digestive system measured 150 cm long. The contents found in the stomach tested POSITIVE (+) ONLY for proteins. Identify the species based on the evidence found

a)

African elephant

b)

Grevy's zebra

c)

Black rhinoceros

d)

African lion

5.

Benedict solution was added to 5 test tubes and placed in a hot water bath. The contents were labeled in the image. According to the results which test tubes tested POSITIVE (+) for simple carbohydrates

a)

Water, Glucose & Onion

b)

Glucose, Onion & Potato

c)

Water Glucose & Starch

d)

Onion, Potato & Starch

6.

Benedict solution was added to 5 test tubes and placed in a hot water bath. According to the results which food solution tested NEGATIVE (-) for simple carbohydrates

a)

Water and Glucose

b)

Water and Onion

c)

Starch and Potato

d)

Starch and Water

7.

Benedict solution was added to 5 test tubes and placed in a hot water bath. The results of those test tubes that tested POSITIVE (+) for simple Carbohydrates are shown in the image. Identify which test tube tested POSITIVE (+) but has the least amount of simple carbohydrates

a)

Gluose

b)

Onion

c)

Potato

d)

Starch

8.

Refer to the diagram. A student ran tests on starch, egg white & vegetable oil. A3 the color was dark purple-black, B3 the color was lavender-purple & contents of C3 was placed on a flat paper surface and a stain was left after contents dried. Based on the evidence what can be concluded about the Food Slurry

a)

The Food Slurry could have been a tuna sandwich with mayonnaise.

b)

The Food Slurry could have been a cracker with peanut butter.

c)

The Food Slurry could have been a steak burrito.

d)

All answers are correct

9.

A wallet disappeared from the Break Room at Town & Country Surf. The suspect left smudge marks on the owner's locker. Each person who was in the Break Room during the suspected time of the crime was asked what they ate for lunch/snack that day. The investigative team ran macromolecule tests on the smudge marks. Based on the results which CLAIM could be supported by the EVIDENCE.

a)

Jimmy is prime suspect based on the results from the macromolecule tests on the evidence at the crime scene.

b)

Ashley and Brent are the least likely suspects based on the results from the macromolecule tests on the evidence at the crime scene.

c)

Kate could be a suspect if there were possible errors in the testing since all tests match up with the evidence from the crime scene to what Kate said she ate for lunch except protein.

d)

ALL CLAIM statements could be backed up by EVIDENCE.

10.

Based on the results from a macromolecule testing done to determine which employee stole a wallet at work in the Break Room, which EVIDENCE would support the CLAIM that the prime suspect is Jimmy

a)

Results showed that the suspect's lunch showed positive for starch, protein and lipid.

b)

Results showed that the suspect's lunch showed a negative for glucose.

c)

Jimmy's lunch when tested showed a negative for glucose but positive for starch, protein & lipid.

d)

ALL are statements that support the CLAIM.

11.

Besides Jimmy, the evidence also points to Kate who only had 1 macromolecule test not match up with the evidence found at the scene. Identify CORRECT possible reason why Kate should still NOT be ruled out as a suspect

a)

The tests could have had an error.

b)

Kate could have lied about what she ate.

c)

BOTH are correct.

d)

None are correct

12.

Review the Marine Sea Otter Food Web. Each level is represented except for the decomposers/detritivores. Identify the correct info for each trophic level shown

a)

3 producers, 3 primary consumers, 3 secondary consumers & 1 tertiary consumer

b)

4 producers, 4 primary consumers, 3 secondary consumers & 1 tertiary consumer

c)

1 producer, 3 primary consumers, 4 secondary consumers, 3 tertiary consumers & 1 quaternary consumer

d)

None are correct

13.

Based on the species in the Marine Sea Otter Food Web, determine the amount of energy at the tertiary trophic level if the primary consumer trophic level has 250,000 kcal available

a)

2,500,000

b)

250,000

c)

2,500

d)

250

14.

The amount of otters in a coastal Washington State area began to decrease in population. Local Marine Biologists noticed that the kelp in the area has started to decline. over the last 5 years. Identify the conclusion that could be a reason why this trend is occurring

a)

A decrease in the amount of Orca Whales is causing the decline in otters.

b)

An increase in the amount of kelp is causing the decline in otters.

c)

Due to the decrease in the producer level in the area the sea urchin and mussel populations also decreased.

d)

None are correct

15.

Which environmental disturbance would cause negative impacts on the Marine Otter Ecosystem shown

a)

Increased in commercial fishing boats in the area.

b)

More seafood restaurants opening in the area.

c)

Greater demand for otter pelts for coats and hats due to harsher winter weather in the northern areas.

d)

ALL would cause negative impacts.

16.

Herbivores could also be referred to as

a)

Primary consumers

b)

Heterotrophs (consumes others for food)

c)

Both are correct

d)

None are correct

17.

Algae or seaweed is also referred to as

a)

Autotrophs (makes own food)

b)

Producers

c)

Both are correct

d)

None are correct

18.

Amino Acids are the monomers for Proteins. Baby lion cubs need to eat their healthy share of proteins and lipids. Lipids provide the long term energy storage needed as a backup energy supply. Identify the correct function for the proteins digested in a baby cub.

a)

Building of muscles and collagen in the body to increase physical adaptive behavior for hunting.

b)

Building of fur to help increase insulation on cold nights.

c)

Cellular transport to increase the exchange of molecules or elements in and out of a cell.

d)

All are correct

19.

Bears forage for food all year before winter arrives. Identify the macromolecule that is MOST important for cellular functioning in regards to long term storage of energy.

a)

Carbohydrates

b)

Proteins

c)

Lipids

d)

Nucleic Acids

20.

A zoologist was sent to determine why the polar bears population was declining in numbers. Which of the models would be used to represent the reason(s) for this decline.

a)

Food chain

b)

Energy pyramid

c)

Food web

d)

All would show different reason(s) for a decline in the Polar bear population