According to the second law of thermodynamics, when energy is converted from one form to another, some of that energy is transformed into heat energy, which is generally released from the "system."
Indicate whether the statement is true or false
TRUE
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The site on the DNA to which a repressor protein binds is the ________.
A. promoter B. operon C. operator D. regulator
Imagine you are a doctor and you are presented with a female patient who has been unable to get pregnant despite 2 years of trying with the same partner. Rank the following factors from most important (#1) to least important (#4) in your determination of the cause of her apparent infertility.
a. Her STD history b. Her hormone levels c. Her partner's age d. Her age
Autosomal recessive traits are ________
a. carried on the X chromosome b. inherited by all children of two carrier parents c. carried on any chromosomes except sex chromosomes d. more common in boys than girls
Which of the following groups is incorrectly described?
a. Cyanobacteria—photosynthetic filaments of cells; many species use the pigment bacteriorhodopsin and inhabit very saline waters b. Proteobacteria—diverse gram-negative bacteria, including pathogens such as Salmonella and Helicobacter pylori and beneficial species such as Rhizobium c. Chlamydias—intracellular parasites, including a species that causes blindness and nongonococcal urethritis d. Spirochetes—helical heterotrophs, including pathogens that cause syphilis and Lyme disease e. Gram-positive bacteria—diverse group that includes actinomycetes, mycoplasmas, and pathogens that cause anthrax, botulism, and tuberculosis