A. Irregular in shape
B. Convex in shape
C. Long and cylindrical in shape
D. Kidney-shaped
A. alanine
B. glycine
C. valine
D. phenylalanine
A group of similar cells that perform a specific function is:
A. Organ
B. Tissues
C. Organelle
D. Organ System
Transport of minerals from soil to epidermal cells of roots via carrier protein molcules along their concentration gradient is called___________?
A. Diffusion.
B. Facilitated diffusion.
C. Passive transport.
D. Active transport.
Most dinoflagellates are___________?
A. Unicellular
B. Multicellular
C. Both of these
D. Zooflagellates
A. Pepsin
B. Hcl
C. Both
D. None
A. DNA
B. RNA
C. Ribosomes
D. Cytoplasm