Answers: 3
Biology, 21.06.2019 20:00
In sexual reproducing animals once fertilization of the egg takes place, the exists as a single cell until cell division begins. a) egg b) larva c) sperm d) zygote
Answers: 1
Biology, 21.06.2019 23:40
Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere
Answers: 2
Biology, 22.06.2019 09:30
Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.
Answers: 1
Biology, 22.06.2019 13:20
Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.
Answers: 1
A car moves takes fuels and realese energy from gets rids of waste through the exhaust pipe ,is car...
Mathematics, 18.08.2019 05:20
Mathematics, 18.08.2019 05:20
Law, 18.08.2019 05:20
History, 18.08.2019 05:20
English, 18.08.2019 05:20
Computers and Technology, 18.08.2019 05:20
Mathematics, 18.08.2019 06:10
Mathematics, 18.08.2019 06:10
History, 18.08.2019 06:10
Mathematics, 18.08.2019 06:10