1. Saguaro cacti have 2 L-shaped arms and you have one with arms that are different lengths. Arm length in the cactus is controlled by one gene. Arms of the same length (A) are dominant to arms of a different length (a). What is the genotype of our cactus? If […]

1) An oncogene is a) A viral gene with no relation to the host cell’s genes. b) Absent in human cancer cells. c) A bacterial gene that causes cancer in the host. d) A mutated form of a proto-oncogene e) A gene that turns off cellular reproduction. 2) Apoptosis refers […]

Q1. Recognize the groups of microorganisms included in the scope of microbiology and explain the criteria for including these groups in the field. Q2. A marine biologist has dredge up some unknown animal from the seafloor. Describe some of the characteristics she must look at to determine the animal phylum. […]

1.What toxic substance that has a lethal dose of 2,000 to 5,000 ppm to laboratory animals has been detected in smoke from polymeric fires? __________. Which of the following statements about polymer decomposition and combustion is INCORRECT?The surfaces of some polymeric products tend to char as they burn.Burning polymeric products […]