#Question id: 26494
#Unit 3. Fundamental Processes
#Question id: 2068
#Unit 2. Cellular Organization
Which of the following molecules dramatically increases the rate of diffusion of water across cell membranes?
#Question id: 3641
#Unit 3. Fundamental Processes
The point at which separation of the strands and synthesis of new DNA takes place is known as the:
#Question id: 1381
#Unit 4. Cell Communication and Cell Signaling
Match each definition with given terms
|
1. Large family of structurally related, secreted, dimeric proteins that act as hormones and local mediators to control a wide range of biological functions in all animals. |
A. Rho |
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2. Cell-surface receptor in which the cytoplasmic domain either has enzymatic activity itself or is associated with an intracellular enzyme. |
B. TOR pathway |
|
3. A crucial signaling protein in the PI-3-kinase–Akt signaling pathway, so named because it is the target of rapamycin. |
C. Enzyme-coupled receptor |
|
4. A kinase that is involved in intracellular signaling pathways activated by cell-surface receptors and that phosphorylates inositol phospholipids at the 3 position of the inositol ring. |
D. Phosphoinositide 3-kinase |
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5. A group of monomeric GTPases that regulate both the actin and microtubule cytoskeletons. |
E. (TGFβ) superfamily |
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6. Cytoplasmic tyrosine kinase present at cell–matrix junctions in association with the cytoplasmic tails of integrins. |
F. Focal Adhesion Kinase |
#Question id: 5074
#Unit 5. Developmental Biology
The "mid-blastula transition" is the point in development when: