The practice of screening blood, blood products, and organ transplants for HIV has virtually eliminated the risk of HIV infection from these sources
Indicate whether the statement is true or false
TRUE
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The pH in the stroma of the chloroplast should be ________ compared to the thylakoids due to the _______
A. higher; higher concentration of hydrogen ions in the thylakoid B. lower; higher concentration of hydrogen ions in the thylakoid C. higher; lower concentration of hydrogen ions in the thylakoid D. lower; lower concentration of hydrogen ions in the thylakoid
The dermis of mammalian skin, including that of humans, contains a large amount of extracellular matrix proteins, including collagen and elastin. As a person ages, the amount of elastin in the dermis declines
Which of the following cell types is likely to be the cause of this change in the dermis of the skin? A. keratinocytes B. fibroblasts C. melanocytes D. epidermal cells
All mammals ________
A) give birth to live young B) are nocturnal C) have mammary glands D) are ectothermic
Shown below is the output from an automated sequencing reaction. What is the sequence of the DNA template strand? 
A. 5' - CACCGTAAGGACTG - 3' B. 3' - CACCGTAAGGACTG - 5' C. 5' - GTGGCATTCCTGAC - 3' D. 3' - GTGGCATTCCTGAC - 5' E. 5' - GTGGCATTCCTGAC - 3' 3' - GTGGCATTCCTGAC - 5'