North Star Honors Bio Test Week 5-6

What distinguishes secondary succession from primary succession?

Seconday Succession occurs in areas where soil is already present,

What is one characteristic that distinguishes animals from plants?

Animals lack a rid cell wall, allowing for flexibily and specialization in function.

What is the primary method used to study the history of life on Earth?

Exploring Fossils

What are alleles?

Different versions of a gene that can occupy the same position on a chromosome

What is a key factor that influence the birth and death rates in a population?

Age and Sex Structure

What is one purpose of social behaviors like cooperation and communication in animals?

To enhance survival and reproduction

What does biomass represent in an ecosystem?

The total mass of living organisms in a given area or ecosystem at a specific time.

When does micro evolution occur?

When alleles change over generation

Which visual tool helps illustrate the age and sex strucute of a population?

Population Pyramid

What insight do ecological pyramids provide about ecosystems

The distribution of energy and biomass within ecosystems

What is a gene flow

The movement of individuals in or out of a population

What is the main difference between a food chain and food web?

A food WEB represents multiple feeding relations

Which of the following is NOT a common reason species are classifieds threatened or endangered.

Agriculture

What role do pioneer species play in primary succession

They break down rock to form soil

What is predation

A relationship where one species consumes another for food.

What are the three crucial processes involved in understanding how species change.

Mutation, natural selction and genertrict drift.

What are abiotic factors in an ecosystem

The nonliving parts of the environment,like sunlight and water

What are innate behaviors primarily controlled by?

Genetics

What is immigration?

The movement of individuals into a population

What are two main components of organic molecules

Carbon and Hydrogen

What asecpt of biolgocial systems challenges the unguided explanations provided by Darwin

Irreducible complexity

What do ecological pyramids visually represent

The flow of energy and biomass through ecosystems

What are two things that distinguish humans from other mammals?

Their unique cognitive abilities like problem-sovling and language use

What is meant by the term biologival diversity

The diversity of living organisms

What is the main difference between a threatened species and an endangered species?s

A threatened species is likely to become endangered in the near future.

What does the fossil record provide for the scientists?

Physical evidence of ancient life forms

What is the population gene pool?

The complete set of genes

What issue arose withthe Miller_urey Experiment

No essential amino acids formed following the experiment

How do scientiest date fossils to determine their age?

Using both relative and absolute dating methods

What happens to prey populations as predator populations increase due to predation pressure

Prey Populations decrees.

Who is assiociate with the earliest formalclassification of organisms?

CarolusLinnaeus

What was the main focus of Charles Darwins therory fo evoulion?

the process of natural seleccton