Which of these is unique to flowering plants?
a. an embryo surrounded by nutritive tissue
b. double fertilization
c. pollen production
d. haploid gametophytes
e. a dominant sporophyte generation
Ans: b. double fertilization
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Amino acids, dipeptides, and sugars are transported from intestinal epithelial cells into circulation. Lipids are first transported from the intestinal epithelium into _____
A) smooth muscles that make up the core of the villi of the intestinal epithelium B) the lymphatic system C) the liver D) the gallbladder
An irregular cluster of spherical bacterial cells is termed ________.
A. staphylobacillus B. streptococcus C. staphylococcus D. staphylospirillum E. streptobacillus
Which region of the lac operon would you target if you want to disrupt the -10 and -35 consensus sequences?
A) lacZ B) lacY C) lacI D) lacP E) lacO
Egg activation by sperm entry is associated with a sudden increase in protein synthesis. What must be true of these proteins?
A. They are from maternal mRNAs. B. They are from paternal mRNAs. C. They are small peptides. D. They are histone proteins.