Gel electrophoresis is a method of genetic analysis which involves seperating segments of DNA based on their size and charge.
It involves cutting DNA with various enzymes, then placing the DNA in an agarose gel. An electrical current is then run through the gel. Because DNA is a polar molecule the DNA segments will travel through the agarose cell as the current is applied. Larger fragments will travel shorter distances than shorter fragments. Two plates with 2 different DNA samples will be conducted and the orientation of the DNA strands will be used to make an analysis by comparing the 2 plates.
The greater the force that produces a wave, the greater the amplitude of the wave and the greater the energy carried by the wave. In a transverse wave the higher the wave, the higher the amplitude. Sounds with greater amplitude will be louder; light with greater amplitude will be brighter
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: Fungi are microscopic heterotrophic living organisms that grow as long threads called hyphae. In terms of their function, they can be divided into-
Parasitic fungus that obtains nutrients from living host while harming it, mutualistic fungus that obtains nutrients and inturn provides benefit provides to the host, and saprophytic fungus that are mainly classified as decomposers.
Thus, correct match is as-
A) Parasitic fungus- 4) lives within the blood of another organism and causes disease
B) Mutualistic fungus - 5) lives around the roots of a tree and provides nutrients to the tree
C) Saprophytic fungus- 2) lives in a marsh environment and aids in biodegradation.
Answer: i would say arms a legs!
Sorry if this is wrong also :(
Explanation: But i hope this helps you! Sorry if this is wrong also :(
