Year 10 Biology Revision Topics

Flashcards for Year 10 Biology Revision Topics

Community

All the different species living in the same area

Biodiversity

The variety of all living things including the different species, genes, and ecosystems

Producer

Use sunlight to create energy through photosynthesis

High Simpson’s Diversity Index value

High biodiversity and ecosystem stability

Nitrification

Ammonium is converted into nitrates

Gas absorbed during photosynthesis and released during respiration

Carbon dioxide

Organism at the first trophic level in a food chain

Producer

Function of mRNA

Carries genetic code from DNA to ribosomes

Result of meiosis

Four non-identical haploid cells

Structure found in RNA but not DNA

Uracil

Ecosystem

A biological community of living organisms (biotic factors) interacting with each other and with their non-living environment (abiotic factors), such as air, water, and soil, within a specific area.

Parasitism

One species benefits while the other is harmed

Process where animals return carbon to the atmosphere

Animal respiration

Process where plants fix carbon from the atmosphere

Photosynthesis

How photosynthesis affects atmospheric carbon dioxide levels

Photosynthesis reduces atmospheric carbon dioxide levels by absorbing CO₂ from the air. Plants use this carbon dioxide, along with sunlight and water, to produce glucose (a form of energy) and oxygen.

Differences between DNA and RNA

DNA = Double stranded RNA = single stranded DNA = uses U RNA = uses T DNA = has a deoxyribose sugar RNA = has a ribose sugar

Complementary mRNA strand to DNA: TAC CGG TTA AGC

AUG GCC AAU UCG

Amino Acids from mRNA: AUG GCC AAU UCG

Met, Ala, Asn, Ser

Genotype of parents in a pedigree showing an autosomal dominant disease with unaffected child

Aa

Environmental factor affecting plant biomass

Temperature and sunlight availability

Sample with the smallest DNA fragment after electrophoresis

Sample B

Sample with a DNA fragment at 600bp after electrophoresis

Sample C