Exam 15: Evolution and Diversity of Microbial Life

Malaria is caused by Plasmodium falciparum,a non-motile protist that contains a cluster of microtubules at one end of the cell.Once injected into the bloodstream,these microtubules are used to attach to red blood cells.In areas of the world where malaria is endemic,people have a relatively high incidence of the allele for

Chloroplasts in algae probably arose from which source?

In the section "Investigating Life: The Battle for Position in Cacao Tree Leaves",why were some leaves on a cacao plant treated with endophytes and others not?

How is the ability of phospholipids to spontaneously form membranes when placed in water important in the origin of life on Earth?

A jellylike substance produced by red algae and used as a culture medium for microorganisms is

How did multicellular organisms evolve from unicellular organisms?

In the ecosystems of the world,fungi act primarily as

Chloroplasts and mitochondria have small,circular chromosomes,which supports the endosymbiont theory that they arose from which of the following?

In the section "Investigating Life: The Battle for Position in Cacao Tree Leaves",endophyte spores were sprayed on the cacao leaves.Which of the following is true of the spores?

Streptomyces are obligate aerobic soil bacteria that infect may root plants,causing scabs on their surfaces.You would expect to find more Streptomyces near the surface of the soil.

A protist is defined as

Many prokaryotes play vital roles in global nutrient cycles.

The Russian chemist Oparin suggested that for organic molecules to form on Earth,the atmosphere was probably rich in all of these EXCEPT

Some protozoa move using false feet called

How did the first life on Earth lead to the diversity of organisms on Earth today?

What was likely the first informational molecule of life?

In a fungus,aggregated hyphae form specialized spore-producing organs called

Sexual spores are formed by the fusion of two haploid nuclei.They then go through meiosis to form spores.Spores are which of the following?

Scientists have fossils of the first life on Earth.

The Irish potato famine in the mid 1840s was caused by which heterotrophic protist decomposer that secreted digestive enzymes onto potatoes?