Native proteins are 

TLS Online TPP Program

#Question id: 12432

#Unit 10. Ecological Principles

Which of the following has the greatest effect on the rate of chemical cycling in an ecosystem? 

TLS Online TPP Program

#Question id: 13204

#Unit 6. System Physiology – Plant

Many of the carriers of Sucrose–H+ symporters in the phloem play various role in transport, most of the transporters are found in source, path, and sink tissues. Some carriers are characterized such as;

a) SUT1, has high-affinity / low-capacity transporter found in the minor veins of source tissues, appears to be important in phloem loading.

b) Important role of SUT1 in phloem loading appears to be complemented by SUT4, which is low-affinity/high-capacity carrier

c) SUT2, appears to function as a sucrose sensor. This is indicated by findings showing that SUT2 is more highly expressed in sink and path tissues than in source leaves.

d) The major sucrose transporters in phloem loading into the companion cells and final uptake into companion cells appears to be the function of SUT4

Which of the following combination is correct?

TLS Online TPP Program

#Question id: 34103

#Unit 2. Cellular Organization

A. A CEN fragment derived from one chromosome can replace the centromere of another chromosome with no apparent consequence.

B. CEN are used simply to attach the chromosome to the spindle, and play no role in distinguishing one chromosome from another.

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#Question id: 31381

#Unit 13. Methods in Biology

Patch clamping can be used to measure the conductance properties of individual ion channels. How can patch clamping be used to determine whether the gene coding for a putative K⁺ channel actually codes for a K⁺ or a Na⁺ channel?

TLS Online TPP Program

#Question id: 9254

#Unit 9. Diversity of Life Forms

Organisms evolve over generations to become adapted to the environmental conditions to which they are exposed. The diversity of organisms that

occurs in any particular area thus may be largely determined by the abiotic factors limiting survivorship and reproduction of organisms in a region. Which of the following limit the range of Saguaro cactus in North America?

I) pollinators

II) sunlight

III) precipitation

IV) temperature