The difference between normal and sickle-cell hemoglobin is based upon the __________________.
A. number of amino acids in the molecule
B. substitution of one amino acid for another
C. number and orientation of the amino acid chains attached to the heme portion of the molecule
D. number of oxygen molecules that can be carried
E. type of bone marrow that produces it
Answer: B
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Cell division in prokaryotic cells is called ________, while in eukaryotic cells it is called ________
A. binary fission ; binary fission B. binary fission ; mitosis C. meiosis ; mitosis D. mitosis ; binary fission
For this problem, you may want to create a Punnett Square on a separate piece of paper. Assume brown eyes are
dominant to blue eyes and dimples are dominant to no dimples. John has brown eyes and his mother has blue eyes. John does not have dimples. Zena has blue eyes and also has no dimples. What are the chances if this couple have children, they will produce a child with blue eyes and no dimples?
a. 0 b. ¼ c. ½ d. ¾ e. There is not enough information provided to solve this problem.
Answer the following statements true (T) or false (F)
1.BMI stands for body mass index. 2.The solid waste that leaves the digestive tract of a vertebrate is called chyme. 3.The process by which a cell engulfs particulate matter is phagocytosis. 4.In herbivores, the cecum is small because the food they ingest is easily digested. 5.Symbiotic bacteria in the large intestine help prevent infection by pathogenic bacteria.
The presence of thylakoids, phycocyanin, gas inclusions, and cysts would be associated with
A. spirochetes. B. archaea. C. cyanobacteria. D. purple sulfur bacteria. E. green sulfur bacteria.