Canvas Quiz Questions

Question 1

What statement best defines nitrogen fixation in the ocean?

Answer 1

Cyanobacteria nitrogen fixers convert stable N2 into a nitrogen source phytoplankton can use for growth.

Question 2

T or F Cyanobacteria respire in their mitochondria.

Answer 2

FALSE

They respire in their thylakoid membrane

Question 3

To maintain their internal ion content, salmon swimming in the open ocean must A seawater and B while salmon swimming up the river to spawn must C the river water and D.

Answer 3

A: Drink
B: Not urinate
C: Not drink
D: Urinate

Question 4

T or F The process of respiration involves glucose plus oxygen to yield carbon dioxide and chemical energy, with water as a waste product. The chemical energy is then used as fuel for cellular functions.

Answer 4

TRUE

Question 5

T or F: Because they are autotrophs, cyanobacteria photosynthesize but do not respire.

Answer 5

FALSE

Question 6

Chemoautotrophic bacteria _________________

Answer 6

are similar to cyanobacteria except they get their energy from chemical compounds instead of the sun

Question 7

T or F: Phycocyanin is an important photosynthetic pigment that allows diatoms to live deeper in the water column.

Answer 7

FALSE

Phycocyanin is a photosynthetic BACTERIA

Question 8

What did NOT occur in plastid (photosynthetic pigment) evolution?

Answer 8

prokaryote engulfed a eukaryote

Question 9

T or F: The surface area to volume ratio of an organism generally increases when the organism gets larger because the surface area is proportional to the square of the length (L2 = L × L) while volume is proportional to the cube of the length (L3 = L × L × L).

Answer 9

FALSE
More surface area when compared to the total volume of the organism, the greater the exchange of materials across the surface of the organism.
The surface area to volume is higher with smaller organisms.

Question 10

Eukaryotic phytoplankton often has a vacuole in their cells. What is its purpose?

Answer 10

To handle waste products

Question 11

T or F: The surface area to volume ratio of an organism generally increases when the organism gets larger because the surface area is proportional to the square of the length (L2 = L × L) while volume is proportional to the cube of the length (L3 = L × L × L).

Answer 11

FALSE
More surface area when compared to the total volume of the organism, the greater the exchange of materials across the surface of the organism.
The surface area to volume is higher with smaller organisms.

Question 12

Where can you find amino acids (AA)?

Answer 12

• protein molecules.
• during the Miller Urey experiment.
• on meteorites.

Question 13

Which colour disappears first when light penetrates pure seawater?

Answer 13

Red

Question 14

What best describes SPRING tides?

Answer 14

The difference between the highest high tide and the lowest tide over a 24 hour period is the greatest.

Question 15

T or F: Carbon dioxide is an organic molecule because it contains carbon.

Answer 15

FALSE

Carbon dioxide is a non-organic molecule

Question 16

T or F: Evolution means ‘descent with modification.

Answer 16

TRUE

Question 17

Which of the Ocean Biomes is characterized by low year-round precipitation and little to no seasonality?

Answer 17

Subbtropical

Question 18

What is the least likely to be considered “plankton” for any portion of its life?

Answer 18

Adult tuna

Question 19

T or F: Since the formation of the Earth up to the present time, the Earth has been mostly dominated by anaerobic (not dependent on oxygen) organisms.

Answer 19

TRUE

Question 20

The ______ is the portion of the ocean where life is most abundant.

Answer 20

Epipelagic

Question 21

Glucose is a ______.

Answer 21

Carbohydrate

Question 22

T or F: All organisms utilize respiration, including organisms that photosynthesize

Answer 22

TRUE

Question 23

The Miller-Urey experiment proved that ______.

Answer 23

simple organic molecules can be synthesized from simple abiotic molecules and electric energy

Question 24

What is a clear weakness of the Miller Urey experiment in terms of explaining the origins of life?

Answer 24

The energy used in the system is not similar to any process known to naturally occur.

Question 25

What type of tide occurs at Kitsilano Beach in Vancouver?

Answer 25

Mixed semi-diurnal

Question 26

T or F: The continental shelf has some of the highest biological productivity in the ocean because it is above the deep ocean floor and receives the most light.

Answer 26

FALSE
The proximity of the shelf to the shore ensures a good nutrient supply from continental sources and adequate light for most photosynthetic organisms.

Question 27

T or F: Carbon Dioxide concentrations, a greenhouse gas, in our atmosphere are currently the highest ever recorded.

Answer 27

FALSE