In ligase-deficient strains of E. coli, DNA and chromosomal replication are unaltered because ligase is not involved in DNA replication
Indicate whether the statement is true or false
FALSE
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A researcher is studying eukaryotic cells that shows an abnormal pattern of surface glycosylation. The researcher determines that these cells have normal levels of glycolipids and integral membrane proteins with O-linked glycosylation. The researcher discovers that there are no N-linked glycosylated proteins on the cell surface and unusually high levels of glycosylated in the ER membrane. What is a reasonable hypothesis to explain this observation?
A. The cell is defective in synthesizing of carbohydrates B. The cell is defective in assembling carbohydrate trees C. The cell has a defective oligosaccharide transferase D. The cell has a defect in its protein sorting pathway E. The cell has a defect in its ER localization signal
Explain the processes of phloem loading and unloading in a flowering plant
What will be an ideal response?
Suppose that an elephant with the genotype EEFfggHh reproduces with an elephant with the genotype eeFFGgHh. What is the probability that a baby elephant (called a calf) would have the genotype EeFFGghh?
A) 1/16 B) 1/32 C) 1/64 D) 1/256
Franks and his colleagues investigated the effects of drought on mustard plants by:
a. hypothesizing that mustard plants from postdrought populations flowered earlier than mustard plants from the same populations before the drought. b. growing seeds stored before the drought to compare with plants growing after the drought. c. concluding that flowering times had shortened by comparing plants growing before the drought to plants growing after the drought. d. All of the above. e. A and C.