TLS Online TPP Program

#Question id: 5798


Mutations:

#Unit 8. Inheritance Biology
  1. Are permanent changes in the DNA sequence or structure.

  2. Produce allelic variation.

  3. Are more likely to be harmful than beneficial.

  4. All of the above.

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TLS Online TPP Program

#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?

TLS Online TPP Program

#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.

TLS Online TPP Program

#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

TLS Online TPP Program

#Question id: 2250

#Unit 2. Cellular Organization

Which of the following is true about cystic fibrosis?

TLS Online TPP Program

#Question id: 2251

#Unit 2. Cellular Organization

Differences between cotransport and active ion transport include

TLS Online TPP Program

#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