The retains its nucleus and controls the translocation of sugar. companion cell sieve cell phloem parenchyma tracheid

What are some possible short and long term medical concerns for crew members on longer space exploration trips

Scientific evidence is most likely to be consistent if it is based on data from

Which term most precisely describes the cellular process of breaking down large molecules into smaller ones? a) catalysis b) metabolism c) anabolism d) dehydration e) catabolism