There are 12% cytosines in a DNA molecule , what percentage of thymines

To calculate the percentage of thymine we need to use Chargaff's rule:

Chargaff's rules state that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine

A+G=T+C

A=T

C=G

100%-(2x12)=2T

T=(100%-24%)/2

T=38%

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.  

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up