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TLS Online TPP Program

#Question id: 31101

Each actin molecule carries a tightly bound ATP molecule. Hydrolysis of ATP: 

#Unit 2. Cellular Organization
  1. Reduces the binding affinity of the subunit for neighboring subunits and makes it more likely to dissociate
  2. Increases the binding affinity of the subunit for neighboring subunits and makes it more likely to dissociate
  3. Reduces the binding affinity of the subunit for neighboring subunits and makes it more likely to associate
  4. Increases the binding affinity of the subunit for neighboring subunits and makes it more likely to associate
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TLS Online TPP Program

#Question id: 18971

#Unit 9. Diversity of Life Forms

The following are all true about the life cycle of mosses except
TLS Online TPP Program

#Question id: 18972

#Unit 9. Diversity of Life Forms

Beginning with the germination of a moss spore, what is the sequence of structures that develop after germination? 
1. Embryo                  2. Gametes 
3. Sporophyte 4. Protonema 
5. Gametophore 
TLS Online TPP Program

#Question id: 18973

#Unit 9. Diversity of Life Forms

Bryophytes may feature all of the following at some time during their existence except 
TLS Online TPP Program

#Question id: 18974

#Unit 9. Diversity of Life Forms

Which feature of cycads distinguishes them from most other gymnosperms? 
1. They have exposed ovules
2. They have flagellated sperm
3. They are pollinated by animals
TLS Online TPP Program

#Question id: 19018

#Unit 9. Diversity of Life Forms

which trait(s) is (are) shared by many modern gymnosperms and angiosperms? 
1. Pollen transported by wind 
2. Lignified xylem 
3. Microscopic gametophytes 
4. Sterile Sporophylls, modified to attract pollinators 
5. Endosperm 
TLS Online TPP Program

#Question id: 19019

#Unit 9. Diversity of Life Forms

Arrange the following structures, which can be found on male pine trees, from the largest structure to the smallest structure (or from most inclusive to least inclusive). 
1. sporophyte 2. microspores 
3. microsporangia 4. Pollen cone 
5. Pollen nuclei