Answer the following statements true (T) or false (F)
1. The modification of a limb that was used for walking in a preexisting ancestor to one that is used as a wing for a species today is called proteomics.
2. A bacterial infection such as pneumonia is most likely caused by organisms derived from the kingdom fungi.
3. All genetic mutations are harmful to an organism.
4. Vertical evolution, whereby living organisms evolve from a common ancestor ("tree of life"), is the only mechanism of evolution on Earth.
1. FALSE
2. FALSE
3. FALSE
4. FALSE
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In a hypothetical twin study, investigators identify 50 identical twin pairs in which both individuals share the trait in question. In another 50 pairs, only one member exhibits the trait while the other does not
The concordance among identical twins for this trait is: A. 5%. B. 25%. C. 50%. D. 75%. E. 100%.
When you arrive at your biology lab, you notice that your lab bench is set up with containers of clay, Mg2+, and nucleotides. What hypothesis do you think you will be testing during the lab, and what is the purpose of the Mg2+?
A. Formation of small organic molecules at deep sea vents; Mg2+ reacts with hot H2S. B. Formation of complex organic polymers on the surface of clay; Mg2+ catalyzes bond formation between nucleotides and clay. C. Formation of small organic molecules on the surface of clay; Mg2+ catalyzes bond formation between nucleotides and clay. D. Formation of small organic molecules in a reducing atmosphere; Mg2+ catalyzes redox reactions.
Which of the following methods would surgical staff use to disinfect surfaces in operating rooms?
A) x-ray radiation B) autoclaving C) ionizing radiation D) gamma ray radiation E) non-ionizing radiation
The woven, intertwining mass of hyphae that makes up the body of a mold is a/an
A. Septum B. Rhizoid C. Spore D. Bud E. Mycelium