The toxicity of cry protein toxins can be increased by the following approaches

1. Site directed mutagenesis within the toxin encoding region

2. Production of hybrid cry genes by fusing selected toxin domains of two or more different cry genes

Which of the following approaches could be correct?

#Question id: 2247

#Unit 2. Cellular Organization

When computing the osmotic pressure that must be placed across the membrane to stop the flow of water, what is the glucose osmotic equivalent of 1 M CaCl₂?

#Question id: 2248

#Unit 2. Cellular Organization

The movement of Na+ ions into an animal cell

a. has a positive ΔG value.                 

b. is energetically favorable.

c. is chemically favorable.                  

d. drives the export of Ca2+ in muscle cells.

#Question id: 2249

#Unit 2. Cellular Organization

In intestinal lumen epithelial cells, which of the following occurs by passive transport?

a. import of Na+ on the apical side    

b. export of Na+ on the basal side

c. import of glucose on the apical side           

d. export of glucose on the basal side

#Question id: 2250

#Unit 2. Cellular Organization

Which of the following is true about cystic fibrosis?

#Question id: 2251

#Unit 2. Cellular Organization

Differences between cotransport and active ion transport include

#Question id: 2252

#Unit 2. Cellular Organization

The generation and maintenance of a membrane electric potential requires which of the following:

a. active pumping of ions       

b. ion-specific membrane channel proteins

c. ATP                                    

d. a generally permeable membrane