Nitrogenase is a complex consisting of the 

(a) MoFe protein (dinitrogenase or component I) a heterotetramer

(b) the Fe protein (dinitrogenase reductase or component II) a heterotetramer

(c) MoFe protein (dinitrogenase or component I) a homodimer.

(d) the Fe protein (dinitrogenase reductase or component II) a homodimer

Which of the following is correct 

#Question id: 8861

#Unit 9. Diversity of Life Forms

Which of the following is true of members of the phylum Cnidaria?

#Question id: 29544

#Unit 6. System Physiology – Plant

All of these R genes encode NBS–LRR receptors which confers certain resistance in different organism

Match the R gene with their respective organism

#Question id: 4589

#Unit 11. Evolution and Behavior

Darwin used the phrase "descent with modification" to explain ________.

#Question id: 4143

#Unit 3. Fundamental Processes

It is possible to convert the Cys that is a part of Cys-tRNACys to Ala by a catalytic reduction.  If the resulting Ala-tRNACys were added to a mixture of (1) ribosomes, (2) all the other tRNAs and amino acids, (3) all of the cofactors and enzymes needed to make protein in vitro, and (4) mRNA for hemoglobin, where in the newly synthesized hemoglobin would the Ala from Ala-tRNACys be incorporated?

#Question id: 29035

#Unit 11. Evolution and Behavior

A trait can evolve by sexual selection if it increases a male’s overall fitness two component such as survival and reproductive ability, but if it decreases survival that leads to___