Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
What will be an ideal response?
This question asked you to evaluate an experiment on the signaling pathway activated by a
receptor tyrosine kinase. If you got the correct answer, great job! If you got an incorrect answer, where
did the process break down? Did you think that proteins downstream of protein X would affect the
interaction between the receptor and protein X? Did you think that the interaction between the ligand and
receptor would interfere with binding between the receptor and protein X?
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If meiosis did not occur in sexually reproducing organisms
1.growth of the zygote would be halted. 2.mitosis would be sufficient. 3.gametes would be haploid. 4.the chromosome number would double in each generation. 5.eggs would be haploid, but sperm would be diploid.
Which of the following contribute to evolutionary change over time?
a. changes in RNA b. changes in DNA c. changes in proteins d. changes in cells
Suppose an animal cell was placed in a beaker of solution. The cell immediately began to swell and ultimately burst. Why did this happen?
a. because the cell's cytoplasm was hypotonic to the solution, which was isotonic b. because the cell's cytoplasm was hypertonic to the solution, which was hypotonic c. because the cell's cytoplasm was hypertonic to the solution, which was isotonic d. because the cell's cytoplasm was hypotonic to the solution, which was hypertonic
Viral genomes are composed of either DNA or ________.
Fill in the blank(s) with the appropriate word(s).