#Question id: 27061
#Unit 1. Molecules and their Interaction Relevant to Biology
#Question id: 4994
#Unit 11. Evolution and Behavior
In certain motile prokaryotes, dozens of different proteins comprise the motor that powers the prokaryotic flagellum. The motor has a complicated structure, and its various proteins interact to carry out its function. Based on Darwinʹs explanation for the existence of human eyes, how would he probably have explained the existence of such motors?
#Question id: 7208
#Unit 5. Developmental Biology
Following statements are given about cleavage in drosophila.
A. During the ninth division cycle, approximately five nuclei reach the surface of the anterior pole of the embryo. These nuclei become enclosed by cell membranes and generate the pole cells that give rise to the gametes of the adult.
B. During tenth division of cycle, the other nuclei migrate to the cortex (periphery) of the egg and at this stage, embryo is called a syncytial blastoderm .
C. When the nuclei reach the periphery of the egg during the tenth cleavage cycle, each nucleus becomes surrounded by microtubules and microfilaments. The nuclei and their associated cytoplasmic islands are called transmembrane.
D. Following division cycle 13, the cell membrane (which had covered the egg) folds inward between the nuclei, eventually partitioning off each energid into a single cell. This process creates the cellular blastoderm.
Which of the following combination are correct?
#Question id: 4817
#Unit 8. Inheritance Biology
How many different gametes can be formed by an organism with genotype AaBbCCddEe, If a, b and c gene are completely link?
#Question id: 1471
#Unit 4. Cell Communication and Cell Signaling
Proto-oncogenes can change into oncogenes that cause cancer. Which of the following best explains the presence of these potential time bombs in eukaryotic cells?