In an isotonic contraction of a skeletal muscle,
a. the tension in the muscle increases.
b. movement occurs.
c. no movement occurs.
d. both a and c occur.
b
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The independent assortment of allele pairs is due to
A. the independent segregation of homologous chromosome pairs during anaphase II. B. the random combination of gametes during fertilization. C. the independent segregation of sister chromatid pairs during anaphase I. D. the independent segregation of non-sister chromatid pairs during anaphase II. E. the independent segregation of homologous chromosome pairs during anaphase I.
The mitotic stage in which the chromosomes condense, nuclei disappear, and the mitotic spindle begins to form is known as:
A. prophase. B. metaphase. C. anaphase. D. telophase. E. interphase.
The fluid immediately surrounding the human
embryo is contained in the a. allantois. b. placenta. c. chorion. d. amnion. e. yolk sac.
Figure 39.7A
Use the figure above to answer the following question.
The teeth designated by the letter "B" in the above figure are called ____.
A. canines B. premolars C. incisors D. molars E. wisdom teeth