Answer:
for the first question the answer is cell. And the second questiob the answer is energy
Answer:
Explanation:
The normal form of the prion protein PrP (shown here) is found on the surface of nerve cells, but when it changes into its misfolded form, it aggregates into long fibrils that clog up the normal functioning of the brain.
Answer:
1- Option A) describes an index fossil. Trilobite existed for a short time, but was abundant and lived in many locations.
2- Option B) Continents were once joined and have since drifted apart.
Explanation:
1) Fossils are animal and vegetable rests found in different strata of sedimentary rocks. Sedimentary layers deposit chronologically, so they are used to reflect history. They keep in each layer some of the forms of life that inhabited that area in the past. These fossils turn to be very useful while dating ages. The term Index fossils refer to those fossils that only existed in a given era or geological period during evolution.
Index fossils must:
• Be easily recognizable and distinguishable from all the other fossils
• Have lived in a relatively short geological period
• Present a wide geographic distribution
• Have lived in different sedimentary basins
• Appear in different types of rocks
• Be abundant
<em>A) Trilobite existed for a short time, but was abundant and lived in many locations. </em>The species accomplish the requirements. It is easily recognizable, had a wide geographic distribution, was abundant, and lived for a short time.
2) The tectonic plates theory states that there is a continual movement of the crust. It explains the movement of the different plates and their directions and interactions. The continental drift theory explains how these movements have been taking place since millions of years ago. When continents were together in a unique continent, many species used to inhabit it. When plates started to separate, they took some of these species that got apart by the ocean. Some species were already dead and fossilized, while some other organisms died during continental drift and got fossilized after the divergence. <em>The existence of the same fossils, placed in the same layers and of the same age, suggests that they used to inhabit the same area and died during the same time, meaning that continents were together when they got fossilized. </em>
Answer and Explanation:
Protein folding : It is the physical procedure by which a protein chain gains its local 3-dimensional structure, an adaptation that is normally naturally useful, in a quick and reproducible way. It is the physical procedure by which a polypeptide folds into its trademark and useful three-dimensional structure from curl. Every protein exists as an unfurled polypeptide or arbitrary curl when interpreted from a grouping of mRNA to a direct chain of amino acids. This polypeptide does not have any steady (dependable) three-dimensional structure (the left hand side of the primary figure). Amino acids cooperate with one another to create a well-characterized three-dimensional structure, the collapsed protein (the correct hand side of the figure), known as the local state. The subsequent three-dimensional structure is dictated by the amino corrosive grouping.
\The right three-dimensional structure is fundamental to work, albeit a few pieces of practical proteins may remain unfurled, so protein elements is significant. Inability to crease into local structure commonly creates inert proteins, however in certain occurrences misfolded proteins have changed or lethal usefulness. A few neuro degenerative and different ailments are accepted to result from the collection of amyloid fibrils shaped by misfolded proteins. Numerous sensitivities are brought about by off base collapsing of certain proteins, on the grounds that the invulnerable framework doesn't deliver antibodies for certain protein structures.
