#Question id: 17201
#Unit 13. Methods in Biology
#Question id: 10817
#Unit 10. Ecological Principles
Removal of a __________________ from a community affects community structure significantly.
#Question id: 296
#Unit 1. Molecules and their Interaction Relevant to Biology
In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by ________.
#Question id: 5560
#Unit 5. Developmental Biology
In a newly fertilized egg, the vitelline layer ________.
#Question id: 1224
#Unit 4. Cell Communication and Cell Signaling
Put the steps of the process of signal transduction in the order they occur.
1. A conformational change in the signal-receptor complex activates an enzyme.
2. Protein kinases are activated.
3. A signal molecule binds to a receptor.
4. Target proteins are phosphorylated.
5. Second messenger molecules are released.