____________ fixing bacteria form symbiotic root nodules in most legume plants (beans, etc).

Mrs KY, 68 years old, presents with dysuria and a raised temperature. You are considering a diagnosis of a urinary tract infection (UTI), you order a urine dipstick test as follow up investigations. Which statement is CORRECT?

Cyanide binds with at least one molecule involved in producing ATP. If a cell is exposed to cyanide, most of the cyanide will be found within the _____.

Organisms that consists only of DNA and a protein coat are called

Which of the following traits allows some bacteria to survive extreme conditions for millions of years?

Trypanosoma is a unicellular, eukaryotic blood parasite that causes African sleeping sickness. Into which of the following groups is it classified?

The  protist groups that include seaweeds?

Energy from sunlight can excite electrons, kicking them out of their orbitals and creating free radicals. Free radicals are highly reactive atoms or molecules that have unpaired electrons and degrade and destroy other compounds in their vicinity. Carotenoids, one of the pigments present in most chloroplasts, can stabilize these free radicals. This suggests that _____.

If photosynthesizing green algae are provided with CO2 containing heavy oxygen (18O), later analysis will show that all of the following molecules produced by the algae contain 18O EXCEPT _____.

Which ones are closer related to plants?