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TLS Online TPP Program

#Question id: 2134

The type of motion least common in biological membranes is:

#Unit 2. Cellular Organization

  1. flip-flop diffusion of phospholipid from one monolayer to the other.

  2. lateral diffusion of individual lipid molecules within the plane of each monolayer.

  3. lateral diffusion of membrane proteins in the bilayer.

  4. lateral diffusion of protein molecules in the lipid bilayer

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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?
TLS Online TPP Program

#Question id: 19026

#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:
                             
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 yet another population. You observe that the AB blood type has a frequency of 0.50 in this population. What are the frequencies of the A and O alleles in this population?
TLS Online TPP Program

#Question id: 19027

#Unit 9. Diversity of Life Forms

The following characteristics all helped seedless plants become better adapted to land except 
TLS Online TPP Program

#Question id: 19028

#Unit 9. Diversity of Life Forms

Sporophylls can be found in which of the following? 
TLS Online TPP Program

#Question id: 19029

#Unit 9. Diversity of Life Forms

Assuming  that  they all belong to the same plant, arrange the following structures from largest to smallest (or from most inclusive to least inclusive). 
1. Spores                 2. Sporophylls 
3. Sporophytes 4. Sporangia 
TLS Online TPP Program

#Question id: 19030

#Unit 9. Diversity of Life Forms

Of the following list, flagellated (swimming) sperm are generally present in which groups? 
1. Lycophyta                 2. Bryophyta 
3. Angiosperms 4. Chlorophyta 
5. Pterophyta