In the bacterial world, a gene located on which of the following would be the LEAST likely to be transferred?
A) R factor
B) F+
C) the phage Mu
D) the chromosome
Answer: D
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In an experiment, a scientist isolates mitochondria from living cells and suspends them in two different buffered solutions. One solution is maintained at ph 4, while the other solution is maintained at ph 9. the scientist finds that mitochondria in the solution at ph 4 continue to produce atp but those in the ph 9 solution do not. The results of the experiment can be used as evidence in support of which of the following scientific claims about mitochondrial activity
A. mitochondria in a cell-free environment are unable to convert thermal energy into atp, B. the electron transport chain pumps electrons from the cytosol to the mitochondrial matrix C. atp production in mitochondria requires a hydrogen ion gradient that favors movement of protons into the mitochondrial matrix D. atp synthase molecules change their orientation in relation to the proton gradient across the mitochondrial membrane
Genes in other species are useful for finding genes in the human genome. Indicate whether the statement is true or false
What is the source of energy used to power the sodium-potassium pump?
What will be an ideal response?
Answer the following questions true (T) or false (F)
1. Microbial contamination always results in infection. 2. Influenza is an example of a chronic disease. 3. Biofilms provide an alternative means for bacteria to attach to surfaces within the body.