Among the array of species that make up a community, not all are equally abundant
Indicate whether the statement is true or false
TRUE
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The disease known as severe acute respiratory syndrome (SARS) is caused by a type of:
A) coronavirus B) herpes virus C) papillomavirus D) picornavirus
Gravitropism is defined as
A. growth in response to the Earth's magnetic field. B. gravity's pull on certain plant organs. C. growth in response to the force of gravity. D. any response to gravity that changes cell structures. E. growth mostly away from gravity.
Features that contributed to success on land include __________ and __________ (two types of
vascular tissues). Fill in the blank(s) with the appropriate word(s).
Once in the respiratory tract, the flu virus targets cells based on specific glycoproteins on their surfaces. How does the virus gain entry into the target cell?
A. Viruses are made up of lipids and can therefore diffuse through the membrane of target cells, gaining entry. B. Glycoproteins within the virus structure bind with glycoproteins on the membrane of the target cell and the virus squeezes through the glycoprotein into the cell. C. The H spikes of the influenza virus break down the cell wall, allowing the virus to gain entry. D. The N spikes of the influenza virus help break down the plasma membrane of a cell, allowing entry of the virus into the cell.