Biology, 13.06.2020 22:57 deebroussard

Oct4 is an embryonic stem cell specific transcription factor. ESCs grown in petri dishes are fed media that contain basic fibroblast growth factor (bFGF) which keeps the ESCs undifferentiated. They examine Oct4 mRNA levels in human ESCs (hESCs), hESCs with exogenous miR-223 (micro RNA 223), hESCs with exogenous miR-223 that do not have bFGF in the media, and hESCs without bFGF but with miR-223 inhibitor. Based on this data, what is the relationship between miR-223 and ESC differentiation?

Answers: 1

Show answers

Another question on Biology

Biology, 21.06.2019 21:00

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

Answers: 1

Answer

Biology, 22.06.2019 14:30

How do water’s relative densities as a solid and a liquid differ from that of most other substances? water’s solid and liquid forms have different densities, while most other substances have solid and liquid forms with similar densities. water’s solid and liquid forms have similar densities, while most other substances have solid and liquid forms with different densities. water’s liquid form is less dense than its solid form, while the opposite is true of most other substances. water’s solid form is less dense than its liquid form, while the opposite is true of most other substances.

Answers: 3

Answer

Biology, 22.06.2019 15:30

(me out over the last several centuries, scientists have made the following broad observations while investigating several branches of the life sciences: -the fossil record shows that different types of organisms have existed at different times in earth's history. -many organisms have similar body structures that seem to be adapted to different ways of living in their environment. -organisms of different species often share similarities in stages of embryonic development. -many species share genetic similarities, and almost all organisms use the same basic building blocks to construct proteins. -often, the extent of two species' similarities can be predicted from their geographic closeness to each other. -a great deal of change has been observed among species that have experienced strong selective pressures through many generations. scientists have carefully considered and rigorously tested the observations listed above. when scientists offer a of these observations, they are making 1.) testable explanation, deductive explanation 2.) scientific interference, scientific law

Answers: 3

Answer

Biology, 22.06.2019 18:30

Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are an echinoderm species which uses anchoring structures called holdfasts to attach themselves to the sea floor. crinoids were most abundant in pennsylvania during the mississippian period, which ranged from 375 to 320 million years ago. fossils of the crinoids shows that during most of this time pennsylvania was that provided favorable conditions for crinoid growth. a) glacial terrain b) a dry and sandy plain c) mostly mountain ranges d) covered by warm, shallow seas

Answers: 2

Answer

You know the right answer?

Oct4 is an embryonic stem cell specific transcription factor. ESCs grown in petri dishes are fed med...

Questions