Which cytoskeletal element in eukaryotes are composed of actin proteins and functions in cell mobility and help determine cell shape?

Each subunit of the ribosome is composed of:

Cells are small because:

Each subunit of the ribosome is composed of:

Label the structures indicated by an arrow. A. _______________ B. _______________   

Cells are small because:

The Na+ channel protein is found in the membranes of muscle cells. Which of the following organelles are involved in its synthesis and transport to the membrane? (select ALL that applies) 

___________ is the fluid portion of the cytoplasm of cells

The large subunit of the ribosome in algae is called the:

Label the structures indicated by an arrow. A. _______________ B. _______________