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These forks involve opening up a section of double-stranded DNA, and each strand becoming a double strand in a newly synthesised piece of DNA. At some point, before any single fork has become two ne
I noticed that if I try to imagine a clear blue daytime sky contrasted with a clear night sky and ask myself which of the two appears closer, my intuition says the daytime sky appears closer.
It seems unlikely that an ovoviparous ancestor of mammals long ago could have had a viviparous offspring in a sharp one-generation dividing line
When it doesn't, it alarms the immune system. But do T-cells express MHC molecules ? If so, how are they using it? If not, what happens when a virus infects T-cells? (Yes, I am confused about HIV infe
When emergency personnel arrive on the scene, they find him weak but awake. He complains of muscle pain in his limbs and dizziness.
I am reading conflicting things online, such as Cine-MRI uses ECG-gating, or that Cine-MRI takes many images of the same position of the heart before stitching together the final result, and it is
What is the immunological function of the molecule found on the T-cells?
When an antiserum is injected to a person to protect oneself from a certain disease, the antibodies in the antiserum come from another organism.
I was reading Matt Ridley's "Genome" book. I am trying to understand the Interlocus Contest Evolution in his X-Y chapter. I do not understand why the X and Y chromosome would want to kill each other
If a human body were somehow to be kept at a cold temperature (say 30C) for the entire life of the given individual. And somehow the brain could be fooled into thinking that this 30C feels nice and
This report describes some actual measurements in pollen transfer to neighboring fields from GM fields, though they all seem to have been one-off measurements at some unknown time after the GM plant
In the majority of human beings, the apex of the heart (left ventricle) points towards the left side of the body. Sometimes however (approx. 1/12000 births), a person is born with a condition known
A human's body temperature averages at around 98.6°FA dog's body temperature averages at around 101.5°F
Zebrafish are raised in fish tanks with one family per tank. The mutation spadetail is a recessive lethal. A stock tank for spadetail was made by crossing two carriers.
Explain why electron flow through Complex II is not associated with ATP synthesis even though electron flow through the other three complexes in the inner mitochondrial membrane is associated with ATP
Outline how natural killer cells destroy viruses and name a mechanism for how this works.
Briefly state the role of lymph node compared to the spleen.
Discuss the evidence that Hedgehog signalling is required to commit muscle precursors to a slow muscle fate in zebrafish.
In the early mouse embryo, the immediate environment of the somite comprises multiple tissues secreting different signalling molecules that pattern the somite.
Compare and contrast the effects of BMP and FGF signalling on the activity of the Smad1 protein.
In the context of ecological stability, define in your own words what the concepts of resistance and resilience mean.
In 1974, two hedgehogs were introduced into one of the islands in the Western Isles in Scotland, an area where hedgehogs do not naturally occur.
I've seen a large butterfly chase a different kind of butterfly around - it may, or may not have been territoriality.
I have noticed that I rarely develop phlemmy throat-aches in the daytime, but often notice them after I have been sleeping.
As PCR has an unfortunate requirement of requiring a high temperature, I was curious about what options are out there to reduce the temperature during PCR denaturation or to stabilize the beads.