Question

Which best answers the best use of a dichotomy key Helps cure diseases helps determine age of species Gives order information Gives order information Helps classify organisms Which is false Gram positive bacteria have thick cell wall gram negative bacteria remain purple Gram negative bacteria have thinner cell walls Staphylococcus is a gram positive bacteria E coil is a gram negative bacteria All the following are examples of protists except Stapphylococcus Spyrogyra Euglena Paramecium Algae Which organisms represent the common ancestor of all photosynthetic plastids found in eukaryotes? diatoms red algae autotrophic euglenids dinoflagellates cyanobacteria There live in harsh environments Bacteria Paramecium Archae Algae Gleocaspa Protists are alike in that all are unicellular. eukaryotic. autotrophic. symbionts. monophyletic.

Answer 1

8). B). Gram-negative bacteria remain purple.

Gram staining is staining technique used to differentiate gram positive and gram negative bacteria. Gram-positive bacteria stain purple blue and gram-negative bacteria remains colorless upon gram staining. This is because the cell wall of gram-positive bacteria is thick and the cell wall of gram-negative bacteria is thin.