Coinfection with HIV and Human Herpesvirus 8 (HHV-8) can greatly promote the development of cancer in AIDS patients.
Answer the following statement true (T) or false (F)
True
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Evolution does not violate the second law of thermodynamics because
A. evolution is a random process; it does not require an input of energy. B. Earth is not a closed system; it constantly receives an input of energy from the sun. C. living organisms are not subject to the second law. D. the disorder generated by extinction balances the order created by evolution.
During prophase I of meiosis, a physical exchange of parts of homologous chromosomes can occur and is called a ____
Fill in the blank with the appropriate word.
When receptors coupled to phospholipase C are activated, calcium levels in the cytosol increase when ______
A. diacylglycerol binds to ligand-gated channels on the endoplasmic reticulum, releasing calcium. B. IP3 binds to ligand-gated channels on the plasma membrane, releasing calcium. C. diacylglycerol binds to ligand-gated channels on the plasma membrane, releasing calcium. D. IP3 binds to ligand-gated channels on the endoplasmic reticulum, releasing calcium. E. phospholipase C phosphorylates the receptor leading to calcium production.
The tube-like structures extending from these
bacterial cells to the underlying cells in the above figure are used for a. attachment. b. locomotion. c. whipping up proteins. d. breathing. e. communication.