The reason humans inhale oxygen is so that it can be used for:
What will be an ideal response?
Making ATP and aerobic respiration
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Which of the following is not a reason for sampling?
A. The destructive nature of certain tests. B. The physical impossibility of checking all the items in the population. C. The adequacy of sample results. D. All of the above are reasons for sampling
During puberty, the secretion of GnRH causes the secretion of ________, which in turn stimulate(s) the production of sex hormones
A) LH and FSH B) oxytocin and prolactin C) insulin D) growth hormone E) oxytocin and growth hormone
Unusual eukaryotic-like (possessing a defined nucleus) cells were obtained from a sample of water from a subglacial antarctic lake
To investigate the properties of the new organism's genome, the nucleus was carefully isolated and the chromatin obtained. The fibers had a "beads on a string" appearance, suggesting some type of "histones." Following digestion with micrococcal nuclease, protein removal, and gel electrophoresis, DNA fragments were obtained that are multiples of 280 base pairs in length. Longer incubation with micrococcal nuclease prior to protein removal results in fragments 200 base pairs in length. The amount of DNA that is wrapped around the "core histones" is therefore A) 80 base pairs in length. B) 200 base pairs in length. C) 360 base pairs in length. D) 480 base pairs in length. E) Not enough information is given to determine the answer.
________ is the scientific name of modern man.
Fill in the blank(s) with the appropriate word(s).