#Question id: 279
#Unit 1. Molecules and their Interaction Relevant to Biology
What is the order of packaging of chromatin in eukaryotic cells from smallest to largest size?
#Question id: 11136
#Unit 7. System Physiology – Animal
Most of the neurons in the human central nervous system are ________.
#Question id: 7197
#Unit 5. Developmental Biology
Following statements are regarding to PAR proteins and the establishment of polarity during early development in nematodes.
A. The internal cytoplasm contains PAR-3, PAR-6, and PKC-3, and the cortical cytoplasm contains PAR-2 and PAR-1.
B. PAR-3 and PAR-6, interacting with the protein kinase PKC-3 are uniformly distributed in the cortical cytoplasm. PKC-3 restricts PAR-1 and PAR-2 to the internal cytoplasm by phosphorylating them.
C. Once PAR-1 is in the cortical cytoplasm, it phosphorylates PAR-3, causing PAR-3 (and its binding partner, PKC-3) to leave the cortex.
D. During first cleavage, the metaphase plate is closer to the posterior, and the fertilized egg is divided into two cells, one having the anterior PARs (PAR-1 and PAR-2) and one having the posterior PARs (PAR-3 and PAR-6).
Which of the following statements are correct?
#Question id: 560
#Unit 1. Molecules and their Interaction Relevant to Biology
Vmax for an enzyme-catalyzed reaction:
#Question id: 12593
#Unit 10. Ecological Principles
Use the following diagram of five islands formed at around the same time near a particular mainland and MacArthur and Wilson's island biogeography principles to answer the following questions.
Which island would likely exhibit the most impoverished species diversity?