Select all of the following relationships between the skeletal and muscular systems that produce movement of the body.
Answer: Skeletal muscles contract and pull on bones, Bones store calcium needed for muscle contraction, Contraction of jaw muscles and tongue allow you to grind food with the teeth
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Cardiac muscle has prolonged contraction due to a sodium induced-calcium released process into the cytoplasm of the cell. Cardiac cells can communicate through pore-like channels between cells. List the junction and the organelle involved in cardiac muscle contraction?
A. Adherens; Golgi apparatus B. Adherens; Rough ER C. Adherens; Smooth ER D. Gap; Golgi apparatus E. Gap; Rough ER F. Gap; Smooth ER
The most plausible explanation for the high number of spiders in plot 4 is:
A. there are too many flies overall. B. there are no centipedes to prey on the spiders and there are abundant flies upon which to feed. C. the spiders preyed on the centipedes and ignored the flies. D. the flies and spiders worked together to eliminate the centipedes.
Assume that one allele is completely dominant over the other for the following questions.
a. Two individuals heterozygous for a single trait have children. What is the expected phenotypic ratio of the possible offspring? b. Two individuals heterozygous for two traits have children. What would be the expected phenotypic ratio of the possible offspring? c. Crossing two individuals heterozygous for two traits results in the same phenotypic ratio as for a single trait. Are the genes for these two traits on separate chromosomes or on the same chromosome? Explain your answer. (Remember that the gene for each trait is located at a locus, a physical region on the chromosome.) Yes, the traits would be on the same chromosome as the loci are linked.
True or False: even though the full oxidation of glucose is exergonic, some of the steps in the involved pathways are endergonic
A. true B. false