Duplicate of Ch. 3 Review: Ecosystems and How They Work

Question 1

The variation within a population

Accepted Answer

Genetic Diversity

Question 2

Nitrogen gas is found in the atmosphere. How does it enter plants?

Accepted Answer

By being fixed by nitrifying bacteria

Question 3

Which of the following describes transport in the hydrologic cycle?

Accepted Answer

When water is moved to a different geographic area

Question 4

Which two processes drive the biological carbon cycle?

Accepted Answer

Photosynthesis and Respiration

Question 5

21% of the atmosphere is _______________.

Accepted Answer

Oxygen

Question 6

All organic compounds contain which element?

Accepted Answer

Carbon

Question 7

How is denitrification different from nitrification?

Accepted Answer

Denitrification releases N2 gas

Question 8

Compared to the amount of nutrients,like carbon, on Earth when it was created, today there are.

Accepted Answer

The same amount of nutrients

Question 9

The other 1% of air is composed of greenhouse gas which include all of the following EXCEPT

Accepted Answer

Helium

Question 10

Which biological process converts organic molecules into atmospheric carbon?

Accepted Answer

Respiration

Question 11

A _________________ cell has a membrane and DNA/RNA, but no other internal parts

Accepted Answer

Prokaryotic

Question 12

There are approximately _______ KNOWN species currently documented in the Encyclopedia of Life.

Accepted Answer

2 Million

Question 13

A typical food chain has an ecological efficiency of _______.

Accepted Answer

10%

Question 14

Which pollution source releases pollutants containing nitrogen, carbon, and sulfur?

Accepted Answer

Burning fossil fuels

Question 15

Producer creates 5,000 cal of available energy. How much will the secondary consumer receive?

Accepted Answer

50 units

Question 16

In __ respiration,producers use sulfur,nitrates or sulfates instead of O2 to break down glucose

Accepted Answer

Anaerobic

Question 17

How is the phosphorus cycle different from other biogeochemical cycles?

Accepted Answer

Phosphorus is not found as a gas

Question 18

Consists of all the populations of different species that live in a particular place

Accepted Answer

Community

Question 19

The part of the atmosphere that contains the majority of the air that we breathe.

Accepted Answer

Troposphere

Question 20

The smallest, most fundamental unit of life

Accepted Answer

Cell

Question 21

The majority (78%) of the atmosphere is __________ gas.

Accepted Answer

Nitrogen

Question 22

A set of individuals that can mate and produce fertile offspring.

Accepted Answer

Species

Question 23

Which of the following is NOT a large carbon storage reservoir

Accepted Answer

Fertilizer

Question 24

The study of connections in nature

Accepted Answer

Ecology

Question 25

Humans’ release of excess phosphates into lakes and rivers can result in

Accepted Answer

the overgrowth of aquatic bacteria and algae

Question 26

Carnivores get the majority of their usable nitrogen compounds by

Accepted Answer

eating herbivores and other carnivores

Question 27

End products of anaerobic respiration (aka fermentation) can include all the following execpt

Accepted Answer

Oxygen

Question 28

A _______________ cell is surrounded by a membrane, has a nucleus, and contains organelles.

Accepted Answer

Eukaryotic

Question 29

Producer contains 13,500 units of available energy. How much does a tertiary consumer receive?

Accepted Answer

13.5 units

Question 30

A group of individuals of the same species that live in the same place at the same time.

Accepted Answer

Population

Question 31

Which of the following is NOT involved in the nitrogen cycle?

Accepted Answer

Rocks

Question 32

The idea that all living things are composed of cells

Accepted Answer

Cell Theory

Question 33

Which of the following are natural sources of sulfur?

Accepted Answer

Volcanoes, Hydrothermal Vents

Question 34

Highest consumer in a food chain

Accepted Answer

Tertiary Consumer

Question 35

Which biological process converts atmospheric carbon into organic molecules?

Accepted Answer

Photosynthesis

Question 36

"Too much or too little of any abiotic factor can limit/prevent growth of a population."

Accepted Answer

Limiting Factor Principle

Question 37

The law of conservation of matter states that

Accepted Answer

Matter is never created or destroyed

Duplicate of Ch. 3 Review: Ecosystems and How They Work

Questions 37

Duplicate of Ch. 3 Review: Ecosystems and How They Work

Questions 37