HESI RN EXIT EXAM VERSION 4 NEWEST 2024 ACTUAL
EXAM ALL 160 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+
What is the significance of Phosphorus? answerPlant growth (energy transfer and nutrient movement)
Found in every living plant cell
Describe the Phosphorus Cycle answer1. P enters through
What is the significant of Nitrogen for living organisms? answerN is a key component of building block
for proteins and DNA in all living organisms
rock weathering
2. P particles dissolve in water
3. Absorbed through plant roots
4. Recycles P
Never in atmosphere bc no gaseous phase
Why are polar regions limited by Nitrogen? answerIn colder climates, there is less biological activity (less
nitrogen fixation, less mineralization and less nitrification by microorganisms)
, Why are tropical regions limited by phosphorus? answerWeathering: soils near the tropics weather for
long SINCE they were not covered by ice
- experience more precipitation/weathering
Tropical soils DO NOT hold nutrients well (not accessible to plant roots)
Ex: georgia red clay
Are nutrients, such as Carbon, Nitrogen and Phosphorus equal? answerNo, all are important tho!
What does biodiversity take into account? answerspecies richness (number of species in a community)
species evennness (the proportion of individuals in a community rep by each species)
Alpha Diversity answerlocal species richness in a relatively small area of homogenous habitat
Beta Diversity answerTotal # of unique species in each local habitat, such as the number of unique
species present in ONLY Community X and ONLY in Community Y
If repeat, does not count
What are the three types of biodiversity? answerSpecies diversity -richness and evenness
Carbon precipitates out
Decomposition & Carbon answerDead organism --> soil
Burning Fossil Fuels & Carbon answerGround --> Air
How can fossil fuels disrupt the natural carbon cycle? answer1900: humans began burning fossil fuels
EXAM ALL 160 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+
What is the significance of Phosphorus? answerPlant growth (energy transfer and nutrient movement)
Found in every living plant cell
Describe the Phosphorus Cycle answer1. P enters through
What is the significant of Nitrogen for living organisms? answerN is a key component of building block
for proteins and DNA in all living organisms
rock weathering
2. P particles dissolve in water
3. Absorbed through plant roots
4. Recycles P
Never in atmosphere bc no gaseous phase
Why are polar regions limited by Nitrogen? answerIn colder climates, there is less biological activity (less
nitrogen fixation, less mineralization and less nitrification by microorganisms)
, Why are tropical regions limited by phosphorus? answerWeathering: soils near the tropics weather for
long SINCE they were not covered by ice
- experience more precipitation/weathering
Tropical soils DO NOT hold nutrients well (not accessible to plant roots)
Ex: georgia red clay
Are nutrients, such as Carbon, Nitrogen and Phosphorus equal? answerNo, all are important tho!
What does biodiversity take into account? answerspecies richness (number of species in a community)
species evennness (the proportion of individuals in a community rep by each species)
Alpha Diversity answerlocal species richness in a relatively small area of homogenous habitat
Beta Diversity answerTotal # of unique species in each local habitat, such as the number of unique
species present in ONLY Community X and ONLY in Community Y
If repeat, does not count
What are the three types of biodiversity? answerSpecies diversity -richness and evenness
Carbon precipitates out
Decomposition & Carbon answerDead organism --> soil
Burning Fossil Fuels & Carbon answerGround --> Air
How can fossil fuels disrupt the natural carbon cycle? answer1900: humans began burning fossil fuels
