A protein normally synthesized in fat cells; it is thought to act as a negative feedback signal normally released by fat stores to decrease appetite and increase fat metabolism
What will be an ideal response?
Leptin
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Generally speaking, a nucleotide substitution has less severe consequences than a nucleotide addition/deletion
A. true B. false
Which of the following cells conduct sugars and other organic solutes?
a. tracheids b. vessel elements c. companion cells d. sieve elements e. xylem
What is the total magnification of a chloroplast viewed with a 10x ocular lens and a 45x objective lens?
a. 4.5x b. 10x c. 45x d. 100x e. 450x
You are asked to determine if a tissue sample taken from a plant stem comes from a monocot or eudicot. How will you accomplish this?
A. Examine the vascular cambium and determine if it is divided into segments or is continuous throughout the stem. B. Locate the vascular bundles and analyze their pattern. C. Determine if the xylem and phloem are located in separate vascular bundles or are bundled together. D. Look at the ground tissue to see if it is arranged in concentric rings or in parallel bundles. E. Examine the epidermis and determine the depth of the cuticle layer.