Biology Final Exam Practice

Which statement correctly compares the roles of different types of organic molecules in the body?

• Lipids provide long-term energy storage for the body, while carbohydrates provide quickly available energy.

• Carbohydrates privide insulation for the body, while nucleic acids provide long-term energy storage.

• Nucleic acids provide support and structure for the body, while carbohydrates provide insulation.

• Proteins provide cushioning for organs, while lipids carry the body's genetic information.

The diagram represents a dihybrid cross in pea plants and the alleles separating.

The parent plants each dsiplay the same combinatin of phenotypes: green pods and yellow seeds. A student examining the diagram posed the following question: Why do the offspring show all four possible combination of genotypes? Which of Mendel's Laws BEST answers the student's question?

• Law of Independent Assortment

• Law of Segregation

• Law of Alleles

• Law of Dominance

What argument supports the claim that sexual reproduction is an advantage over asexual reproduction in an environment that changes frequently?

• sexual reproduction results in genetically varied population

• sexual reproduction generally requires less energy

• sexual reproduction guarantees that the offspring will be identical

• sexual reproduction has a higher rate of success in producing offspring

Which food chain arranges components of this food web according to energy flow?

• arctic poppies --> arctic hares --> seals

• grasses --> caribou --> arctic foxes --> polar bears

• grasses --> lemmings

  --> snowy owls --> arctic hares

• plankton and seaweed

  --> fish --> seals --> snowy owls

How does natural selection contribute to the theory of evolution?

• Over time, natural slection results in changes in the inherited characteristics of a population.

• Natural selections selects for the same animals every time.

• Natural selection acts on populations.

• Over time, natural selection evolve populations.

What is the correct sequence of cell division?

• A--B--C--D

• B--D--C--A

• C--B--D--A

• D--B--A--C

A new flower species is discovered in the rainforest. Back in the lab, a scientist crosses a red variety with a blue variety. The result includes some red flowers, some blue flowers, and some purple flowers. What type of dominance pattern do these plants display?

• Complete dominance

• Incomplete dominance

• Codominance

During DNA replication the goal is to make

• 2 identical copies of DNA.

• proteins.

• carbohydrates.

• lipids.

The first step of protein synthesis is

• transcription.

• translation.

• replication.

• reproduction.

What are the TWO types of cell transport?

• active

• passive

• hypotonic

• hypertonic