TLS Online TPP Program

#Question id: 3041


Which statement about gram-negative bacteria is correct?

#Unit 2. Cellular Organization
  1.  Penicillins are the best antibiotics to use against them.

  2. They often possess an outer membrane containing toxic lipopolysaccharides.

  3. Their chromosomes are composed of DNA tightly wrapped around large amounts of histone proteins.

  4. Their cell walls are primarily composed of peptidoglycan.

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TLS Online TPP Program

#Question id: 8955

#Unit 9. Evolution & Diversity of Life Forms

Which of the following characteristics generally applies to protostome development?

TLS Online TPP Program

#Question id: 8956

#Unit 9. Evolution & Diversity of Life Forms

Protostome characteristics generally include which of the following?

TLS Online TPP Program

#Question id: 8957

#Unit 9. Evolution & Diversity of Life Forms

A student encounters an animal embryo at the eight-cell stage. The four smaller cells that comprise one hemisphere of the embryo seem to be rotated 45 degrees and lie in the grooves between larger, underlying cells (spiral cleavage). This embryo may potentially develop into a(n)

TLS Online TPP Program

#Question id: 8958

#Unit 9. Evolution & Diversity of Life Forms

A student encounters an animal embryo at the eight-cell stage. The four smaller cells that comprise one hemisphere of the embryo seem to be rotated 45 degrees and lie in the grooves between larger, underlying cells (spiral cleavage). If we were to separate these eight cells and attempt to culture them individually, then what is most
likely to happen?

TLS Online TPP Program

#Question id: 8959

#Unit 9. Evolution & Diversity of Life Forms

The most ancient branch point in animal phylogeny is that between having

TLS Online TPP Program

#Question id: 8960

#Unit 9. Evolution & Diversity of Life Forms

With the current molecular-based phylogeny in mind, rank the following from most inclusive to least inclusive.
1. ecdysozoan
2. protostome
3. eumetazoan
4. triploblastic