Unit 1

Question 1

What is the process by which plants convert carbon dioxide into energy?

Answer 1

Photosynthesis

Photosynthesis is the process used by plants and some other organisms to convert light energy into chemical energy.

Question 2

What do plants absorb from the soil to aid in their growth?

Answer 2

Nutrients

Nutrients are essential for plant growth and development.

Question 3

What gas do plants take in from the atmosphere for photosynthesis?

Answer 3

Carbon dioxide (CO2)

Carbon dioxide is a critical component in the process of photosynthesis.

Question 4

What is the result of the photosynthesis process?

Answer 4

Oxygen and glucose

Oxygen is released as a byproduct, while glucose is used by the plant for energy.

Question 5

Fill in the blank: Plants convert carbon dioxide and water into glucose and _______ during photosynthesis.

Answer 5

Oxygen

Question 6

What role does cellular respiration play in plants?

Answer 6

It converts glucose into energy

Cellular respiration is essential for plants to utilize the energy stored in glucose.

Question 7

True or False: Plants only release carbon dioxide during photosynthesis.

Answer 7

False

Plants take in carbon dioxide during photosynthesis and release oxygen.

Question 8

What is the relationship between photosynthesis and carbon dioxide in the atmosphere?

Answer 8

Photosynthesis reduces carbon dioxide levels

Plants use carbon dioxide from the atmosphere, contributing to its reduction.

Question 9

What are the two main inputs required for photosynthesis?

Answer 9

Carbon dioxide and water

These inputs are critical for the photosynthesis process to occur.

Question 10

Fill in the blank: The chemical equation for photosynthesis can be simplified to _______ + _______ → Glucose + Oxygen.

Answer 10

Carbon dioxide, Water

Question 11

What are biochemical cycles?

Answer 11

Processes that recycle nutrients through food chains and the environment

Biochemical cycles involve the movement of elements like carbon and water through various processes and ecosystems.

Question 12

What is cycled between living organisms and the environment?

Answer 12

Water

Water is a crucial element in biochemical cycles, facilitating various biological processes.

Question 13

In which direction do carbon flows occur in biochemical cycles?

Answer 13

One direction through the processes of respiration and photosynthesis

This flow is essential for maintaining the balance of carbon in ecosystems.

Question 14

What are the main processes involved in the carbon cycle?

Answer 14

Respiration and photosynthesis

These processes are vital for the transfer of carbon between the atmosphere and living organisms.

Question 15

Fill in the blank: The atmosphere is a key reservoir of _______.

Answer 15

Carbon

The atmosphere contains carbon dioxide, which is essential for photosynthesis.

Question 16

What role do living organisms play in biochemical cycles?

Answer 16

They facilitate the recycling of nutrients

Living organisms contribute to biochemical cycles through various biological processes.

Question 17

True or False: Biochemical cycles only involve the flow of carbon.

Answer 17

False

Biochemical cycles involve multiple elements, including water and nitrogen, in addition to carbon.

Question 18

What is the significance of the carbon cycle?

Answer 18

It regulates carbon levels in the environment

The carbon cycle is crucial for maintaining climate stability and supporting life.

Question 19

What is the primary function of photosynthesis in the carbon cycle?

Answer 19

To convert carbon dioxide into organic matter

Photosynthesis is a key process that captures carbon from the atmosphere.

Question 20

What is the primary function of respiration in the carbon cycle?

Answer 20

To release carbon dioxide back into the atmosphere

Respiration is essential for returning carbon to the atmosphere after it has been used by organisms.

Question 21

What is Combustion

Answer 21

The burning of Fossil fuels

Combustico likely refers to a process or concept associated with the burning of fossil fuels.

Question 22

What are fossil fuels?

Answer 22

Natural gas, coal, and oil.

Fossil fuels are a primary source of energy for human activities.

Question 23

What is carbon dioxide’s role in the atmosphere?

Answer 23

A greenhouse gas that contributes to climate change.

Increased levels of carbon dioxide are primarily due to human activities, such as burning fossil fuels.

Question 24

What are natural carbon sinks?

Answer 24

Forests, oceans, and soil

These ecosystems play a crucial role in mitigating climate change.

Question 25

What happens to plants and animals when they die?

Answer 25

They decompose, returning nutrients to the soil and contributing to the carbon cycle. ## Footnote Decomposition is facilitated by decomposers such as bacteria and fungi.

Question 26

What is cellular respiration?

Answer 26

The process by which cells convert glucose into energy, releasing carbon dioxide as a byproduct. ## Footnote This process is essential for the survival of most living organisms.

Question 27

Fill in the blank: The process by which organic matter is broken down by decomposers is called _______.

Answer 27

Decomposition

Question 28

True or False: Carbon dioxide is absorbed by plants during photosynthesis.

Answer 28

True ## Footnote Photosynthesis is the process by which plants convert carbon dioxide and sunlight into glucose and oxygen.

Question 29

What is the term for the number of individuals of a species that live in a defined area?

Answer 29

Population ## Footnote Population refers to a group of individuals of the same species that inhabit a specific area.

Question 30

Fill in the blank: A _______ is a group of different populations that live together in a defined area.

Answer 30

Community ## Footnote A community consists of various species interacting within a shared environment.

Question 31

What can change in three different ways regarding population?

Answer 31

Population size ## Footnote Population size can increase, decrease, or remain stable based on environmental factors.

Question 32

True or False: Population growth occurs only under ideal living conditions.

Answer 32

True ## Footnote Ideal conditions include good weather and ample resources, which facilitate growth.

Question 33

What is the term for the component of population growth that reflects the number of individuals in an area?

Answer 33

Population density ## Footnote Population density measures how many individuals live in a specific area.

Question 34

What is the term for a population growth model where the growth rate increases as the population size increases?

Answer 34

Exponential growth ## Footnote Exponential growth occurs when resources are unlimited and conditions are ideal for reproduction.

Question 35

Fill in the blank: Under ideal conditions, a population can experience _______.

Answer 35

RAPID growth

Question 36

What happens to the population as more individuals survive and reproduce?

Answer 36

The population gets larger

Question 37

What is logistic growth?

Answer 37

A growth model that accounts for resource limitations ## Footnote Logistic growth occurs when the growth rate decreases as the population reaches carrying capacity.

Question 38

Fill in the blank: The availability of _______ such as food and space can limit population growth.

Answer 38

resources

Question 39

True or False: In logistic growth, the rate of population increase remains constant regardless of resource availability.

Answer 39

False

Question 40

What is a key characteristic of the logistic growth model?

Answer 40

It has a carrying capacity limit ## Footnote The carrying capacity is the maximum population size that an environment can sustain.

Question 41

In the context of population growth, what does 'carrying capacity' refer to?

Answer 41

The maximum population size an environment can sustain

Question 42

What can lead to the scarcity of resources in an environment?

Answer 42

Increased population density ## Footnote As populations grow, competition for limited resources increases, leading to scarcity.

Question 43

Fill in the blank: As more organisms survive and reproduce, _______ is produced.

Answer 43

more offspring

Question 44

What does the term 'density-dependent factors' refer to?

Answer 44

Factors that affect population growth based on the population density ## Footnote Examples include competition, predation, and disease.

Question 45

What does PGR stand for?

Answer 45

Population Growth Rate ## Footnote PGR is a measure of how quickly a population increases or decreases over time.

Question 46

What is the relationship between population growth and death rates?

Answer 46

Population growth is affected by the number of births minus the number of deaths ## Footnote This formula helps in calculating the overall change in population size.

Question 47

Fill in the blank: The population growth rate typically ranges from ______.

Answer 47

5 to 20 ## Footnote This range shows the variability in population growth under different conditions.

Question 48

What does the term 'deaths' refer to in population studies?

Answer 48

The number of individuals that die within a specific time frame ## Footnote This is a critical factor in calculating PGR.

Question 49

What does 'population growth' encompass?

Answer 49

The increase in the number of individuals in a population over time ## Footnote This can be influenced by factors like birth rates, death rates, immigration, and emigration.

Question 50

What is the process of moving into a new area called?

Answer 50

Immigrate ## Footnote Refers to the act of coming to live permanently in a foreign country.

Question 51

What is the process of leaving one's country to settle in another called?

Answer 51

Emigrate ## Footnote Refers to the act of leaving one's resident country with the intent to settle elsewhere.

Question 52

What factors contribute to an increase in population?

Answer 52

Births and Immigration ## Footnote Population increases when the number of births and immigrants surpasses deaths and emigration.

Question 53

What factors contribute to a decrease in population?

Answer 53

Emigration and Deaths ## Footnote Population decreases when the number of deaths and emigrants surpasses births and immigration.

Question 54

In an open system, how is population calculated?

Answer 54

(Births + Immigrants) - (Deaths + Emigrants) ## Footnote This formula represents the net change in population considering both incoming and outgoing individuals.

Question 55

What is the equation for population regulation?

Answer 55

Regulation = (Births + Immigration) - (Deaths + Emigration) ## Footnote This equation helps in understanding how different factors affect the total population size.

Question 56

True or False: An increase in births and immigration will always lead to population growth.

Answer 56

True ## Footnote As long as the births and immigration outnumber deaths and emigration, population growth will occur.