At which renal tubular sites would the concentration of creatinine be expected to be highest in a normally hydrated person?

TLS Online TPP Program

#Question id: 9155

#Unit 9. Diversity of Life Forms

The success of plants extending their range northward following glacial retreat is primarily determined by ________.

TLS Online TPP Program

#Question id: 12147

#Unit 10. Ecological Principles

Climax forests

TLS Online TPP Program

#Question id: 23707

#Unit 13. Methods in Biology

Which of the following separates molecules by movement due to size and electrical charge?

TLS Online TPP Program

#Question id: 7248

#Unit 5. Developmental Biology

Planning of the Xenopus mesoderm along the dorso-ventral axis contains an antagonistic relationship between chordin and bmp-4. Is there an analogy here to dorso-ventral patterning in the Drosophila embryo?

TLS Online TPP Program

#Question id: 4259

#Unit 3. Fundamental Processes

Rank the following one-base point mutations with respect to their likelihood of affecting the structure of the corresponding polypeptide (from most likely to least likely).

1. insertion mutation deep within an intron

2. substitution mutation at the third position of a codon in an exon

3. substitution mutation at the second position of a codon in an exon

4. deletion mutation within the first exon of the gene