A theory by which prokaryotes gave rise to the first eukaryotic cells. Chloroplasts in plants and mitochondrion in other eukaryotes are believed to have once been prokaryotic organisms engulfed by larger prokaryotic cells.

Tropism can be defined as the Choose one: A. ability to infect a particular type of cell within the host. B. mechanism of entry into a host cell for bacteriophages. C. emergence of a new type of virus. D. ability to infect a broad range of hosts.

Which statement about atmospheric pressure near Earth's surface is true?

How is DNA copied? A. The antisense strand of DNA is used as a template to create both strands of the new double helix. B. The mRNA made from the DNA is used as a template to create a complementary strand of DNA. C.

What is the typical weather for the year of moscow russia

In his observations of heterosexual strangers in bar situations, Perper found if people were mutually attracted to each other the first indication was what?

Change over time is also know as the theory of?

What best explains the relationship between structure and function of the cell membrane? -the single layer membrane surrounding the outside of the cell allows for the easy removal of waste -the lipids and proteins that make up the membrane allow it

Water accounts for 60-90% of the mass of every cell, and it dissolves many substances that are used or produced in cellular chemical reactions. although it does not dissolve all substances, water is sometimes called the universal solvent.

11. Does water have a high or low surface tension? 12. What does all the water on earth make up? 13. What is salinity? 14. Does fresh water have a high or low salinity? 15. What is a river basin? What river basin is Clinton, NC located in? 16.

Spanish influenza is thought to be caused by