A polypeptide chain may have abrupt changes in direction and restriction in geometry because of the presence of

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#Question id: 8925

#Section 6: Plant, Animal and Microbial Biotechnology

What is the probable sequence in which the following clades of animals originated, from earliest to most recent?

1. tetrapods

2. vertebrates

3. deuterostomes

4. amniotes

5. bilaterians

TLS Online TPP Program

#Question id: 8927

#Section 6: Plant, Animal and Microbial Biotechnology

Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that

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#Question id: 8928

#Section 6: Plant, Animal and Microbial Biotechnology

An adult animal that possesses bilateral symmetry is most certainly also

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#Question id: 8930

#Section 6: Plant, Animal and Microbial Biotechnology

Soon after the coelom begins to form, a researcher injects a dye into the coelom of a deuterostome embryo. Initially, the dye should be able to flow directly into the

TLS Online TPP Program

#Question id: 9268

#Section 2: General Biology

The most active photosynthetic tissue in higher plants is the

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#Question id: 9274

#Section 2: General Biology

The different types of carotenoids found in photosynthetic organisms, the all carotenoids are