You are examining a new animal species. You find that you can pass a line through any longitudinal plane and find equal halves. Evaluate the symmetry of this animal.
A. spherical.
B. radial.
C. bilateral.
B. radial.
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Which radical idea did Cuvier propose based on his studies of Earth’s history?
a. extinction of species b. evolution of species c. Earth as billions of years old d. an unchanging Earth e. static species composition
A sustained muscle contraction resulting from increased stimulation frequency is ____________________. Fill in the blank(s) with the appropriate word(s)
Which of the following is the correct sequence of events during mitosis?
A) Nuclear membrane dissolves, chromosomes line up, chromosomes split, nuclear membrane forms B) Nuclear membrane forms, chromosomes line up, chromosomes split, nuclear membrane dissolves C) Chromosomes line up, nuclear membrane forms, nuclear membrane dissolves, chromosomes split D) Chromosomes split, nuclear membrane dissolves, nuclear membrane forms, chromosomes line up
Which hormone, when present in a human female's urine, indicates a pregnancy?
a. estrogen b. luteinizing hormone c. human chorionic gonadotropin d. progesterone