Put ticks in the table to show whether each statement is true or false about the structure of RNA.

Statement about RNA	True	False
RNA is typically single-stranded.
RNA contains the sugar ribose instead of deoxyribose.
In RNA, the base thymine (T) is replaced by uracil (U).
RNA is a polymer made of amino acids.
RNA molecules are generally much longer than DNA molecules.

Draw on this

Draw lines to connect the cell type to its cell wall characteristic, and then to the presence of chloroplasts.

• Cell type:
  • plant cell
  • animal cell
• Cell wall characteristic:
  • cellulose cell wall
  • no cell wall
• Presence of chloroplasts:
  • chloroplasts present
  • no chloroplasts

Complete these sentences about preparing and viewing specimens under a light microscope.

Choose words from the list: cover slip, eyepiece, high power, light source, stage, stain

(i) To make transparent cell structures visible, a chemical called a $...........................$ is added to the specimen.

(ii) The specimen on the slide is covered gently with a thin piece of glass called a $...........................$.

(iii) The lens at the top of the microscope that you look directly through is called the $...........................$ lens.