Which of the following is NOT a characteristic of a morphogen?
A. a morphogen will only elicit effects in areas where it is at a high enough concentration
B. morphogens can be distributed asymmetrically throughout a cell
C. morphogens can be secreted to act on neighboring cells
D. morphogens can cause cell death
E. morphogen gradients are always established in the oocyte
E. morphogen gradients are always established in the oocyte
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The correct sequence of steps in the M phase of the cell cycle is _________________
A. prophase, prometaphase, metaphase, anaphase, telophase, nuclear division B. prophase, prometaphase, metaphase, anaphase, telophase, cytokinesis C. prophase, metaphase, prometaphase, anaphase, nuclear division, telophase D. prophase, metaphase, anaphase, telophase, cytokinesis, nuclear division
The most common forms of color blindness result in the inability to properly perceive the colors ____________________ and ____________________
Fill in the blank(s) with correct word
One goal of proteomics research is to identify proteins that could be targets for new drugs
a. True b. False Indicate whether the statement is true or false
The sugars that honeybees feed on are what type of macromolecules?
a. lipids b. carbohydrates c. proteins d. nucleic acids