"During embryonic development red blood cells begin to develop in patches called blood islands. The blood cells secrete growth factors that diffuse only to nearby cells, signaling differentiation into endothelial cells. The endothelial cells eventually form the linings of the blood vessels." The growth factor described in the passage is involved in what type of signaling?a. Autocrine
b. Paracrine
c. Endocrine
d. Juxtacrine
Answers: 2
Biology, 21.06.2019 19:30
Are these strong bases, neutral, strong acids, weak acids or weak base household bleach (ph=12.6) fluid in a car's battery (ph of less than 1.0) milk (ph=6.7) stomach contents (ph=2.2) pure water (ph=7)
Answers: 1
Biology, 22.06.2019 03:20
Which of the following statements most accurately describes convergent evolution? the process in which two similar species evolve separately from each other and share similar characteristics the process in which a single species evolves into two or more new species the process in which two entirely different species evolve in response to each other the process in which two different species evolve separately from each other but still share similar characteristics
Answers: 3
Biology, 22.06.2019 07:50
Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers
Answers: 3
Biology, 22.06.2019 09:30
Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?
Answers: 1
"During embryonic development red blood cells begin to develop in patches called blood islands. The...
Health, 30.01.2020 11:57
History, 30.01.2020 11:57
Mathematics, 30.01.2020 11:58
Mathematics, 30.01.2020 11:58
History, 30.01.2020 11:58
Health, 30.01.2020 11:58
Mathematics, 30.01.2020 11:58
Computers and Technology, 30.01.2020 11:58
Biology, 30.01.2020 11:58
Biology, 30.01.2020 11:58
English, 30.01.2020 11:58
Mathematics, 30.01.2020 11:58
Physics, 30.01.2020 11:58
Mathematics, 30.01.2020 11:58