GCSE Biology Paper 2 in 5 Minutes | Everything You Need to Know (Combined and Triple Science)

Created from Youtube video: https://www.youtube.com/watch?v=jRWSvco_KV0video

Concepts covered:homeostasis, nervous system, DNA structure, natural selection, ecology

The video provides a concise overview of GCSE Biology Paper 2, covering three main topics: homeostasis and response, inheritance, variation and evolution, and ecology. It explains key concepts such as the nervous and endocrine systems, DNA structure, meiosis, natural selection, and ecological definitions, emphasizing the importance of understanding these for exams.

chapter

Concepts covered:homeostasis, nervous system, DNA structure, natural selection, ecology

Question 1

Homeostasis maintains a constant internal environment.

Question 2

What is the role of a reflex arc?

Question 3

The maintenance of a constant internal environment is called _____.

Question 4

CASE STUDY: A student is studying a food web and needs to determine the trophic levels of various organisms. They are confused about the biomass distribution across these levels.

All are true about trophic levels except:

Question 5

CASE STUDY: A geneticist is analyzing a family tree to predict the likelihood of a genetic disorder in offspring using Punnett squares.

Select three correct Punnett square uses.

Question 6

Insulin and glucagon regulate blood glucose levels.

Question 7

How do plants primarily achieve growth and elongation?

Question 8

The complete set of DNA within an organism is known as the _____.

Question 9

CASE STUDY: A farmer notices his crops are wilting despite regular watering. He suspects an issue with the plant hormones affecting growth and fruit ripening.

Identify the incorrect plant hormone function.

Question 10

Asexual reproduction requires two parents.

Question 11

What maintains a constant internal environment in organisms?

Question 12

In a reflex arc, the coordinator is skipped for a quick _____.

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