What is one structure you observed are included in plant cells but lacks in animal cells?

The observations of hooke and van leeuwenhoek documenting the existence of microscopic cells formed the basis of what important theory? a. the cell theory stating that all living things are composed of cellsb. the theory of spontaneous generation, which held that life forms could arise spontaneouslyc. the theory of chemotherapy, or use of antimicrobials to destroy pathogenic organismsd. the germ theory of disease and causative agents

Which chromosomes do not determine the gender of an organism? a.autosomal b.regulated c.sex

What characteristic of radioactive decay makes it useful for determining the absolute age of samples? question 10 options: occurs at a constant rate changes based on temperature speeds up under high pressure slows down in very dense samples