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TLS Online TPP Program

#Question id: 2220

Cell membranes have distinct inside and outside faces. Which of the following statements is the most likely explanation for the membrane's asymmetrical nature?

#Unit 2. Cellular Organization

  1. Since the cell membrane forms a border between one cell and another in tightly packed tissues such as epithelium, the membrane must be asymmetrical.

  2. Since cell membranes communicate signals from one organism to another, the cell membranes must be asymmetrical.

  3. The two sides of a cell membrane face different environments and carry out different functions.

  4. Proteins only function on the cytoplasmic side of the cell membrane, which results in the membrane's asymmetrical nature.

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TLS Online TPP Program

#Question id: 8967

#Unit 9. Diversity of Life Forms

Which of the following organisms are deuterostomes?
TLS Online TPP Program

#Question id: 8968

#Unit 9. Diversity of Life Forms

Which of the following statements concerning animal taxonomy is (are) true?
1. Animals are more closely related to plants than to fungi.
2. All animal clades based on body plan have been found to be incorrect.
3. Kingdom Animalia is monophyletic.
4. Only animals reproduce by sexual means.
5. Animals are thought to have evolved from flagellated protists similar to modern choanoflagellates.
TLS Online TPP Program

#Question id: 8969

#Unit 9. Diversity of Life Forms

Among the characteristics unique to animals is
TLS Online TPP Program

#Question id: 8970

#Unit 9. Diversity of Life Forms

Acoelomates are characterized by
TLS Online TPP Program

#Question id: 9050

#Unit 9. Diversity of Life Forms

If an ecologist were studying the regional interactions among multiple populations of different species and how they influence the exchange of materials between their various environments, then this would be an example of which kind of research?
TLS Online TPP Program

#Question id: 9051

#Unit 9. Diversity of Life Forms

What would happen to the seasons if Earth were tilted 35 degrees off its orbital plane instead of the usual 23.5 degrees?