Which of the following statement(s) is (are) true of transmembrane proteins?

a. All contains a hydrophobic α helix.

b. Some serve as membrane attachment sites for peripheral membrane proteins.

c. Some contain more than one membrane-spanning domain.

d. All are asymmetrically oriented in the lipid bilayer.

TLS Online TPP Program

#Question id: 17669

#Unit 9. Diversity of Life Forms

Use the letters A-D to label where on the phylogenetic tree each of the following derived characters appeared. 

TLS Online TPP Program

#Question id: 17670

#Unit 9. Diversity of Life Forms

The following are common to both charophytes and land plants except 

TLS Online TPP Program

#Question id: 17671

#Unit 9. Diversity of Life Forms

Protection from predators 

TLS Online TPP Program

#Question id: 17672

#Unit 9. Diversity of Life Forms

Protection from desiccation

TLS Online TPP Program

#Question id: 17673

#Unit 9. Diversity of Life Forms

transport of water, minerals, and nutrients 

TLS Online TPP Program

#Question id: 17802

#Unit 9. Diversity of Life Forms

Which of the following was not a challenge for survival of the first land plants?