Question

what prefix means breakdown/downward *
bio
cata
lacto
ology
prokaryotes & eukaryotes both contain: *
cell membrane
nucleus
mitochondria
ribosomes
cytoplasm
dna

Explanation:

1. The prefix "cata -" means breakdown or downward. For example, in "catabolism", it refers to the breakdown of complex molecules. "Bio -" means life, "lacto -" relates to milk, and "ology" is a suffix meaning the study of.
2. Prokaryotes and eukaryotes both have cell membranes which act as barriers, ribosomes for protein - synthesis, cytoplasm which is the jelly - like substance inside the cell, and DNA as the genetic material. Prokaryotes lack a nucleus and mitochondria which are present in eukaryotes.

Answer:

1. B. cata
2. Cell Membrane, Ribosomes, Cytoplasm, DNA