Which of the following is a type of signaling in which a cells respond to substrate that they themselves release ?

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#Question id: 3010

#Unit 2. Cellular Organization

Endospores

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#Question id: 23890

#Unit 13. Methods in Biology

Which of the following is an essential element of plasmids used as cloning vectors?

a. a centromere

b. a telomere

c. an origin of replication

d. a drug resistance gene

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#Question id: 1859

#Unit 4. Cell Communication and Cell Signaling

Defects in the neutrophil NADPH oxidase system result in:

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#Question id: 12981

#Unit 10. Ecological Principles

The following questions refer to Figure which depicts the age structure of three populations.

Which population appears to be stable?

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#Question id: 4469

#Unit 3. Fundamental Processes

Termination is a normal and important function at the ends of genes. There, sequences called terminators trigger the elongating polymerase to dissociate from the DNA and release the RNA chain it has made, In bacteria, terminators come in two types: Rho-dependent and Rho-independent, choose correct statements about this;

Rho-dependent	a- rut sites
	b- has an ATPase activity
Rho-independent	c- terminates only those transcripts still being transcribed beyond the end of a gene or operon
	d- intrinsic terminator