Exam 14: Prokaryotes, Protists, and Viruses

Anaerobic methanogens produce ____.

The fusion of gametes of malaria-causing Plasmodium takes place ____.

Plasmodium is a(n)____.

Scientists hypothesize that ____ served as a primitive template for forming polymer chains from organic subunits, such as amino acids.

____ are dome-shaped structures composed of layers of early cells and sediments.

It is thought that viruses may have originated from cells because ____.

The first eukaryotic cells were ____.

The theory that early metabolic reactions occurred in rocks near hydrothermal vents is known as the _____hypothesis.

Evidence supporting the lack of oxygen on early Earth includes _____.

____ may have been a source of organic monomers on early Earth.

You boil water that has been extracted from a swamp and find archaea that are still alive. These archaea are most likely ____.

Agar is produced by ____.

Experiments like those performed by Stanley Miller in the 1850s demonstrated that lightening-fueled atmospheric reactions could produce ____.

According to scientific evidence, the first organisms on Earth must have been ____.

The ____ form of Plasmodium is transferred to humans through the bite of an infected mosquito.

Diatoms are characterized by ____ and are the source of economically useful_____.

Viral infections in plants often occur by the action of _____.

Bacteria ____.

Scientific evidence suggests that Earth had cooled enough for_____ to accumulate by 4.3 billion years ago.

A coccus is a(n) ____.