Answer:
Dark Energy, Dark Matter
In the early 1990s, one thing was fairly certain about the expansion of the universe. It might have enough energy density to stop its expansion and recollapse, it might have so little energy density that it would never stop expanding, but gravity was certain to slow the expansion as time went on. Granted, the slowing had not been observed, but, theoretically, the universe had to slow. The universe is full of matter and the attractive force of gravity pulls all matter together. Then came 1998 and the Hubble Space Telescope (HST) observations of very distant supernovae that showed that, a long time ago, the universe was actually expanding more slowly than it is today. So the expansion of the universe has not been slowing due to gravity, as everyone thought, it has been accelerating. No one expected this, no one knew how to explain it. But something was causing it.
Eventually theorists came up with three sorts of explanations. Maybe it was a result of a long-discarded version of Einstein's theory of gravity, one that contained what was called a "cosmological constant." Maybe there was some strange kind of energy-fluid that filled space. Maybe there is something wrong with Einstein's theory of gravity and a new theory could include some kind of field that creates this cosmic acceleration. Theorists still don't know what the correct explanation is, but they have given the solution a name. It is called dark energy.
Answer: 25% of the children will have both anirida and migraine headache
Explanation: The man has a dominant gene for anirida and normal headache with a mom with no blindness. Therefore, the man gene is (Nn) for heterozygous anirida and (mm) for normal headaches and his wife has heterozygous gene for migraine (Mm) 'cause her dad has normal headache and homozygous gene for normal vision(nn) .
Therefore
Nnmm × Mmnn= NnMm Nnmm Nnmm nnmm.
The crossing would give birth to Offspring with nirida and migraine (NnMm) =1/4 ×100= 25%
The answer is false. Spider bodies are made up of two segments and they have eight legs. Insects have three segments and a varying number of legs based on the species. As a predator, spiders also have multiple eyes, while insects have only two, however they may be able to rotate or otherwise be able to get a full view of their surroundings in that fashion.
Answer: Option B. are able to drift about in the plasma membrane.
Explanation:
Membrane phospholipid are having a amphiphilic structure which contains a hydrophilic "head" consisting of a phosphate group and two hydrophobic fatty acid "tails" that are connected to a glycerol molecule.
In contact with water, membrane phospholipid hydrophobic tail avoid interaction with water molecules and allow to drift about in the plasma membrane. the hydrophilic heads line up against each other and forms lipid bi-layer that faces towards water.
The movement of membrane phospholipid forms the fluid mosaic model,in which lipid molecules act as solvent and proteins embedded in it. This allows the proteins and lipid to move across plasma membrane.
Hence, The structural property of membrane phospholipid makes them able to drift about in the plasma membrane
Answer:
first the car starts with potential energy when the car starts to move which is kinetic energy and when you come to a sudden stop you will get yanked forward because one of Newton's law are that what is in motion stays in motion.
Explanation:
