Collateral ligaments are <span>two strap-like ligaments that act to stabilize the hinge motion of the knee, preventing any lateral or medial movement. It is the structure that connects the knee joint at both sides and prevents its dislocation. There are two types: Tibial (medial) collateral ligament and Fibular (lateral) collateral ligament.</span>
<h2>Answer:
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Option A) Active transport.
<h2>Explanation:
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- Active transport - Movement of molecules or ions from a lower concentration to a region of higher concentration(against a concentration gradient), by the use of enzymes and consuming energy(ATP), hence the substances move across plasma membrane against a concentration gradient.
- Osmosis is the process in which molecules of the solvent passes through a semipermeable membrane(plasma membrane in case of cell) from a less concentrated solution to more concentrated one along the concentrated gradient.
Energy is not required in this process and hence it is passive process.
- Diffusion is the movement of the molecules of a material from higher concentration to lower concentration.
- Facilitated diffusion is similar to diffusion, it the transport of substances across a biological membrane from an area of higher concentration to an area of lower concentration by the help of a carrier molecule.
Result: Active transport happens against a concentration gradient.
Answer:
Last Universal Common Ancestor
The acronym LUCA stands for—Last Universal Common Ancestor. The term is used by astrobiologists and those interested in the evolutionary biology. The geological period of time in which LUCA existed was a point of demarcation from primitive life forms to more-advanced earth-living entities.
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Answer:
Explanation:
The arm of a human, the wing of a bird or a bat, the leg of a dog and the flipper of a dolphin or whale are homologous structures. They are different and have a different purpose, but they are similar and share common traits.
The answer is A) it is stored only in the nucleus of all living cells<span>
The genetic code is the set of rules that explains how the information is transferred from DNA to the proteins. It is made of the </span>same components in all living organisms and is found in the base sequence of the nucleic acids. Also, it <span>is read only in groups of three nitrogenous bases. But it is not stored only in the nucleus of the cells. DNA material is present in mitochondria as well. Nevertheless, in Prokaryotes, there is no nucleus, so the genetic information is in the cytoplasm.</span>