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TLS Online TPP Program

#Id: 9084

#Unit 4. Cell Communication and Cell Signaling #G Protein–Coupled Receptors #Part B Pointers
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TLS Online TPP Program

#Id: 3872

#Unit 5. Developmental Biology

GABA acts on prespore cells to induce secretion of AcbA.
TLS Online TPP Program

#Id: 2188

#Unit 10. Ecological Principles

Primary succession - refers to succession on a newly exposed site that was not previously occupied by soil and vegetation.
Secondary succession - refers to succession on a site that has already supported life but that has undergone a disturbance.
TLS Online TPP Program

#Id: 1072

#Unit 5. Developmental Biology

Class A activity alone specifies sepals.
TLS Online TPP Program

#Id: 9392

#Unit 11. Evolution and Behavior

Web making in spiders

Spiders make silk in a special part of their body called a gland and use their legs to pull it out of their bodies. This is called spinning.
TLS Online TPP Program

#Id: 6464

#Unit 3. Fundamental Processes

Promoters that are constitutively expressed and needed in all cells (their genes are sometimes called housekeeping genes) have upstream sequence elements that are recognized by ubiquitous activators.