Quiz: Biology Foundations for Success — 8 domande

1. Which term describes a fast, automatic pathway from a sensory input to an immediate motor output?

A. Osmoregulation

B. Accommodation

C. Reflex arc

D. Endocrine system

Answer: (C)

Spiegazione

A reflex arc links sensory and motor pathways to produce a rapid response with minimal delay. The endocrine system uses hormones, so it is much slower than a reflex.

2. Which process allows the lens to change shape so that images from different distances focus on the retina?

A. Decomposition

B. Mitosis

C. Accommodation

D. Natural selection

Answer: (C)

Spiegazione

Accommodation is the eye’s focusing adjustment for near and far objects. It is a property of the eye, not a form of cell division or evolution.

3. Which type of cell division produces gametes with half the usual chromosome number and increases genetic variation?

A. Meiosis

B. Cloning

C. Mitosis

D. Selective breeding

Answer: (A)

Spiegazione

Meiosis produces gametes with half the chromosome number and creates variation through recombination. Mitosis makes genetically identical cells for growth and repair.

4. Which tool is used to predict genotype and phenotype ratios from the known genotypes of two parents?

A. Food web

B. Punnett square

C. Reflex arc

D. Pyramid of biomass

Answer: (B)

Spiegazione

A Punnett square models the inheritance of a single gene from parent genotypes to offspring outcomes. The other options relate to ecology or body responses, not inheritance prediction.

5. What does biodiversity refer to in an ecosystem?

A. The variety of species in an area

B. The rate of energy transfer between trophic levels

C. The number of decomposers in the soil

D. The total amount of carbon stored in plants

Answer: (A)

Spiegazione

Biodiversity is the variety of species in a given area and is often linked to ecosystem stability. Energy transfer and carbon storage are important ecological ideas, but they are different measures.

6. Which statement best describes a food web?

A. A chart showing biomass at each trophic level

B. A cycle that recycles water through the environment

C. A process that returns nutrients through decomposers

D. A network of interconnected feeding relationships

Answer: (D)

Spiegazione

A food web shows multiple feeding relationships and pathways of energy flow. A biomass pyramid, water cycle, and decomposition describe other ecological processes.

7. Which revision method strengthens memory by retrieving information from memory rather than just rereading it?

A. Past paper practice

B. Active recall

C. Spaced repetition

D. Teach to learn

Answer: (B)

Spiegazione

Active recall uses self-testing, flashcards, or explaining ideas in your own words to strengthen retrieval. Spaced repetition is about timing reviews, not the retrieval method itself.

8. Which revision approach involves explaining concepts to another person to expose gaps in understanding?

A. Past papers and mark schemes

B. Required practicals

C. Active recall

D. Teach to learn

Answer: (D)

Spiegazione

Teach to learn works by forcing you to explain ideas clearly, which reveals misunderstandings and reinforces learning. Past papers and required practicals are useful, but they serve different purposes.