TLS Online TPP Program

#Question id: 7180


Development of tetrapod limb has to function in a three dimensional coordinated system:

Proximal-distal axis by ____a_____

Anterior-posterior axis by ___b_____

Dorsal-ventral axis by ______c____

Which of the following combinations are correct?

#Unit 5. Developmental Biology
  1. a-sonic hedgehog protein, b-fibroblast growth factor family protein, c-wnt7a protein
  2. a- fibroblast growth factor family protein and hox genes, b- sonic hedgehog protein, c- wnt7a protein
  3. a- wnt7a protein and hox genes, b- sonic hedgehog protein, c- fibroblast growth factor family protein
  4. a- fibroblast growth factor family protein and hox genes, b- wnt7a protein, c- sonic hedgehog protein
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TLS Online TPP Program

#Question id: 9240

#Unit 9. Diversity of Life Forms

Use the following figure to answer the question.


Looking at the figure, what can you conclude about the data?


TLS Online TPP Program

#Question id: 9241

#Unit 9. Diversity of Life Forms

The main goal of sustainable development is to ________.

TLS Online TPP Program

#Question id: 9242

#Unit 9. Diversity of Life Forms

Eutrophication is often caused by excess limiting-nutrient runoff from agricultural fields into aquatic ecosystems. This process results in massive algal blooms that eventually die and decompose, ultimately depleting the dissolved oxygen, killing large numbers of fish and other aquatic organisms. Predict which of the following human actions would best address the problem of eutrophication near agricultural areas?

TLS Online TPP Program

#Question id: 9243

#Unit 9. Diversity of Life Forms

Elevated carbon dioxide levels have been shown to contribute to the greenhouse effect, resulting in an increase in mean global temperature. Ecosystems where the largest warming has already occurred include snow-covered northern coniferous forests, tundra, and arctic sea ice habitats. Which statement best explains how the elimination of ice-covered ecosystems affects the rise or fall in global temperature?

TLS Online TPP Program

#Question id: 9244

#Unit 9. Diversity of Life Forms

One characteristic that distinguishes a population in an extinction vortex from most other populations is that

TLS Online TPP Program

#Question id: 9245

#Unit 9. Diversity of Life Forms

One characteristic that distinguishes a population in an extinction vortex from most other populations is that