Which of the following movement structures help cells "crawl" using extensions of the cytoplasm?
Choose 1

A. Pseudopodia

B. Cilia

C. Flagella

D. Ribosomes

Agenus is a taxonomic grouping that identifies a collection of species. when a scientist discovers a new species, how is this species assigned to a genus

In which order does sexual reproduction take place in plants? a. pollination, germination, fertilization b. germination, fertilization, pollination c. pollination, fertilization, germination d. fertilization , pollination, germination

According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this?               a.  this implies that dna and proteins aren't essential in cells today.    b.  this implies that rna can catalyze any chemical reaction that enzymes catalyze.    c.  this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna.    d.  this implies that dna and proteins evolved after rna.