The 3 parts of a DNA nucleotide are the phosphate group, deoxyribose, and the base
a. true
b. false
Answer: a. true
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You stain a cell with a dye that reacts with an enzyme found in the lysosome. You would also expect to see this dye in the:
A. nucleus. B. mitochondria. C. endoplasmic reticulum. D. cytoplasm.
In order for an earthworm to lengthen several contiguous segments of its body, it must
A. contract its longitudinal muscles, which pulls up the chaetae and moves the body fluid perpendicular to the long axis of the worm. B. contract its longitudinal muscles, which extends the chaetae into the surrounding soil and moves the body fluid parallel to the long axis of the worm. C. contract its circular muscles, which extends the chaetae into the surrounding soil and moves the body fluid parallel to the long axis of the worm. D. contract its circular muscles, which pulls up the chaetae and moves the body fluid parallel to the long axis of the worm. E. contract its circular muscles, which extends the chaetae into the surrounding soil and moves the body fluid perpendicular to the long axis of the worm.
Evolution has been tested in various ways. Genetic, fossil, anatomical, physiological and behavioral studies all confirm that evolution is the mechanism of the origin of species. Thus, in science evolution is considered a scientific
____.
a. fact b. hypothesis c. law d. theory e. guess
Which of these muscles would be most involved in a forcible exhalation, as in a sneeze?
A) sartorius B) rectus abdominis C) deltoid D) gastrocnemius