Sem 1: HB Final SciToolKit, Ecology, Biochem (24-25)

Front

What is the charge of an atom with equal numbers of protons and electrons?

Back

0 (neutral)

Front

What characteristic of living organisms explains growth in height as children age?

Back

Living things grow and develop.

Front

What does the presence of DNA in all cells indicate about living organisms?

Back

Living things are based on a universal genetic code.

Front

What is the optimum pH of an enzyme if its activity is highest at that pH?

Back

The optimum pH of the enzyme is 6.6.

Front

Which statement is true about animals?

Back

All of these statements are true: they are consumers, they need water and oxygen, they need to eat other living things for food.

Front

What is the basic unit of life?

Back

The cell.

Front

What process do living organisms use to maintain stable internal conditions?

Back

Homeostasis.

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions.

Front

What is the difference between a producer and a consumer in an ecosystem?

Back

Producers create their own food (e.g., plants), while consumers eat other organisms.

Front

What is the significance of biodiversity in an ecosystem?

Back

Biodiversity contributes to ecosystem resilience and stability.