DNA, chromosomes, genes and the genome | Science | Quizalize & Oak National Academy

Starter quiz

What is DNA?
- a cell
- a nucleus
- a chemical molecule ✓
- an organism
Where in this animal cell is DNA stored?
- 'nucleus' ✓
True or false? Bacteria have DNA.
- True ✓
- False
DNA is passed onto offspring in reproduction. What does it carry?
- the organism's features
- instructions ✓
- cells
- genetic code ✓
What is all of the genetic material in a cell called?
- DNA
- genome ✓
- nucleus
- cytoplasm
DNA structure was observed using ______ radiation by Rosalind Franklin.
- 'X-ray' ✓

All living __________ have a unique genome.
- cells
- species
- families
- organisms ✓
Which of the following structures is a chromosome?
- a
- b
- c ✓
- d
What label is missing on this image (under the bracket) indicating a section of DNA?
- 'gene' ✓
The genome is made of all of the genetic code; this includes genes and ...
- junk DNA
- non-genes
- non-coding DNA ✓
- nucleus
Starting with the smallest first, put these structures in order of size.
- 1
  
  ⇔
  
  gene
- 2
  
  ⇔
  
  chromosome
- 3
  
  ⇔
  
  genome
- 4
  
  ⇔
  
  nucleus
- 5
  
  ⇔
  
  cell
- 6
  
  ⇔
  
  organism
Humans have ______ pairs of chromosomes in each body cell.
- '23' ✓

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All organisms have a genome, and there are similarities and differences between the genomes of different organisms.
The genome is made of DNA, wound up into tightly-packed structures called chromosomes.
Human body cells have 23 pairs of chromosomes, stored in the nucleus; bacteria have one that is stored in the cytoplasm.
Sections of the DNA in chromosomes are called genes, which store instructions for inherited features and life processes.
Other sections are non-coding DNA, which contains instructions that controls when the information in genes is used.

'Genes' and 'DNA' are exactly the same thing.

The lesson explores the idea that genes are sections of your DNA, and all the DNA together is the genome.

Genome - The genome is all of the genetic material of a cell; it stores the code for all the features and processes of a living organism.
Dna - DNA is the chemical substance that genetic material is made out of; it stores the genetic code.
Nucleus - The nucleus is where DNA, wound up into chromosomes, is stored in animal, plant and fungi cells.
Chromosome - A chromosome is a package of tightly wound DNA.
Gene - Genes are sections of DNA that code for features and processes.