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TLS Online TPP Program

#Question id: 31132

Which of the following statements about pumps is NOT correct?

#Unit 2. Cellular Organization
  1. P-class includes the Na+/K+ ATPase in the plasma membrane, which generates the high cytosolic Na+ and low cytosolic K+ concentrations typical of animal cells.
  2. F-type pumps use the H+ gradient across the membrane to drive the synthesis of ATP.
  3. V-class pumps couple ATP hydrolysis to transport of protons against a concentration gradient.
  4. ABC transporters primarily pump small molecules  across cell membrane.
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TLS Online TPP Program

#Question id: 19016

#Unit 13. Methods in Biology

In reverse phase chromatography, the stationary phase is made______________
TLS Online TPP Program

#Question id: 19017

#Unit 13. Methods in Biology

Which technique is also known as colour writing ?
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 
TLS Online TPP Program

#Question id: 19020

#Unit 9. Diversity of Life Forms

The main way that pine trees disperse their offspring is by using 
TLS Online TPP Program

#Question id: 19025

#Unit 8. Inheritance Biology

Consider the ABO “blood type” gene. This single gene has three alleles called A, B, and O. There are four resultant “blood types” (phenotypic classes), as follows: C
                         
Assume Hardy-Weinberg equilibrium,  the frequencies of the A and B alleles are 0.26 and 0.07, respectively. You now examine the ABO blood types in a new population. You observe that the A, B, and O blood types all have equal frequencies in this population. What are the frequencies of the A and O alleles in this population?