Farmers often spray spores of which bacterial species that make a protein toxic only to some insect larvae?
A. Aspergillus niger
B. Proteobacteria
C. Verticillium
D. Agrobacterium tumefaciens
E. Bacillus thuringiensis
Answer: E
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Suppose a bag made of a selectively permeable membrane was filled with a 5% solution of glucose and sealed. What would happen if the bag was placed in pure water or in a 10% glucose solution?
What will be an ideal response?
In cohesion-tension theory, what molecular interactions allow water molecules to maintain a continuous fluid column as water is pulled from roots to leaves?
A. Ionic bonds B. Covalent bonds C. Hydrogen bonds D. Polar bonds E. Nonpolar bonds
Water is capable of dissolving many substances including salt and sugar. Water can be described as which of the following?
a. solute b. solution c. solvent d. ionic compound
Convergent evolution often produces structures that are homologous but NOT analogous.
a. true b. false