Pattern formation in plants involves signaling molecules that specify positional information
____________________ Indicate whether the statement is true or false.
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After melting a significant quantity of lab equipment during a previous experiment, your colleague decides to recoup his losses by synthesizing trendy vitamin-infused beverages for sale during his off time. He knows that the vitamins he’s chosen won’t dissolve in water, so he’s planning to dissolve them in oil and then blend the vitamin-oil solution into soda water. What’s the flaw in your colleague’s plan?
a. Soda water will leach vitamins from the oil, causing them to settle out of the beverages. b. Vitamins are only soluble in trans fats, which will negate the health benefits of his products. c. Oils are hydrophobic, so his beverages will separate before they can be consumed. d. Carbonation in soda water will cause the fatty acids to decompose into alcohol.
In the section "Investigating Life: Birds Do, Bees Do It", what can be concluded about the flower preferences of hummingbirds?
A. They prefer pink flowers. B. They prefer M. cardinalis in both the natural and selected colors tested. C. They prefer yellow-orange flowers. D. They prefer red flowers. E. They prefer M. lewisii in both the natural and selected colors tested.
Protein X contains four transmembrane domains, a short N-terminus and a long C-terminus. Following protein synthesis, the N-terminus of the protein faces the lumen (the inside) of the ER. After protein X is transported to the cell surface via exocytosis, you would expect the N-terminus of protein X to be
A. extracellular. B. in the lipid bilayer of the plasma membrane. C. in the lumen. D. cytoplasmic.
Following fertilization, the somatic cells of humans divide by:
a. apoptosis b. mitosis c. meiosis d. DNA replication