Question 13 Proteins have many different function in a cell. Which of the following are possible functions of a protein? a catalysts and building blocks of DNA
b enzymes and actively transports molecules across the cell membrane
c building blocks of DNA and structural components of cell membrane
d accomponents of the cell membrane and main source of energy in cellular respiration

b enzymes and actively transports molecules across the cell membrane

Explanation:

Proteins help transport molecules and speed up chemical reactions

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

as in mitosis, dna replication occurs during interphase.   in meiosis, it occurs specifically in s phase of interphase 1.