Scientists in Scotland figured out a novel method to clone cells successfully. It involved
A. using an egg that was in cytokinesis and a nucleus that was in S stage of the cell cycle.
B. using an egg that was in the S stage of the cell cycle and a nucleus that had just entered prophase.
C. using an egg that was in the S stage of the cell cycle and a nucleus that just passed through telophase.
D. using an egg and a nucleus that were at the same stage of the cell cycle.
Answer: D
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Microarrays, hybridization tests, and ribotyping are increasing in frequency in their use in clinical labs for diagnosis of infectious diseases and the microorganisms causing them. Why is this?
A. They are cheaper than biochemical tests. B. They have greater specificity for the organism because they employ specific antibody. C. The tests are more easily performed in a doctor's office or hospital, right there where the specimens are taken. D. Genomic testing has less errors compared to biochemical tests and serological tests.
Chitin is a reinforcing fiber in the external skeleton of arthropods
Indicate whether the statement is true or false.
What hormone is actually produced by the kidney, which has an effect on the production of another hormone, aldosterone, which in turn is produced by the adrenal glands?
a. ANF b. ADH c. vasopressin d. ACTH e. renin
During axonal projection, multiple axons cluster together using (A)__________. This process is known as (B)__________.
a. (A) extracellular matrix (ECM) (B) cell migration b. (A) extracellular matrix (ECM) (B) fasciculation c. (A) cell adhesion molecule (CAM) (B) cell migration d. (A) cell adhesion molecule (CAM) (B) fasciculation