the purpose of valves in the heart valves is to allow blood to flow only in one direction. Valves open and close on differential pressure on each side. pulmonary and the aortic valves receive blood from the ventricles and their semilunar valves allow blood to go into the arteries and prevent back flow from the artery to the ventricles.
Answer: It is greater when sucrose concentration went from 2.5 to 7.5g/l.
Explanation: The rate of reaction of an enzyme is known to be affected by the rate of concentration of its substrate, which in this case is the sucrose Solution.
If the rate of increase of concentration is high,the activities of the enzyme SUCRASE will increase accordingly, in order to breakdown the substrate.
The rate of increase of Sucrose from 2.5 to 7.5g/l is higher(300%) than the rate of Increase of Sucrose from 22.5 to 27.5g/l (1.22%). It is expected under circumstances that the action of SUCRASE will increase at a rate higher in the first Solution than in the second Solution.
The rate of increase in sucrase activity depends on the concentration of sucrose and whether or not the enzyme is saturated. The increase could be greater at lower concentrations (2.5 to 7.5 g/l) if sucrase is not yet saturated. The increase might be less at higher concentrations (22.5 to 27.5 g/l) if sucrase is near or at saturation point.
The increase in sucrase activity is generally considered to be a response to the concentration of substrate present, in this case, sucrose. The increase in activity happens because more substrate (sucrose) is available for the enzyme (sucrase) to act upon. However, there is a limit to this increase. Once the enzyme is saturated with substrate, further increases in substrate concentration do not increase the enzyme's activity. This is known as the saturation point.
To determine whether sucrase activity increased more when sucrose concentration increased from 2.5 to 7.5 g/l or from 22.5 to 27.5 g/l, we would need specific data on the rate of sucrase activity at these different concentrations. It's possible that the increase from 2.5 to 7.5 g/l was greater if this is in the ascending portion of the enzyme activity curve and the sucrase was not yet saturated with sucrose. Conversely, the increase from 22.5 to 27.5 could be lesser if the sucrase is near or at saturation point.
Answer:
Enzymes are proteins that act as catalysts for reactions, such as those in cellular respiration. They increase the likelihood of a reaction by lowering the energy required for a reaction to occur. In the process, enzymes are left unchanged by the reaction. ... The resulting molecules from the reaction are called products.
Explanation:
Answer:
The answers are Tubercle and keeping the body balance over the feet, the hability of standing, avoid the body to fall, ankle plantarreflexion and foot evertion
Explanation:
The peroneus brevis muscle is located on the lateral side of the leg and it is a fusiform, and, short muscle, that becomes a tendon and passes behind the lateral malleolus. The tendon is inside a synovial sheath. It passes foward and downward into a groove above the peroneal tubercle on the calcaneous. The distal attachment of the peroneus brevis is the tubercle on the lateral side of the base of the first metatarsal. The mechanism is responsible for foot evertion, ankle plantarreflexion, because the tendon's position, which pulls the foot in that direction. The advantange is that this mechanism garantees important functions such as stops a sideway sway when a person is standing, controlling the body from falling to the opposite side when standing on one leg (keeps the body balanced)
Controlling the position of the foot and stopping the foot from being inverted . Sometimes the foot can over invert causing weight to be applied to the lateral surface of the foot.
Answer:
the peroneus longus (also known as fibularis longus) is a superficial muscle in the lateral compartment of the leg, and acts to evert and plantarflex the ankle.
Explanation:
Answer:
Cell serves as the basic building blocks for building the structure or the body of the living organisms. Now, certain type or specific number of cells come closer and arrange themselves in such a sequence that they need to perform a unique or specific task by making up a whole organ structure.
Explanation:
There are certain cells inside the human body which makes up a single organ and then performs the whole function specifically by themselves, as we have the "myocardial myocytes". These are the specific type of cells which are required for the heart's cardiac muscles to develop or grow in a given pattern. As these cells are specialized for making up or building up of the cardiac muscles which in turns results in the heart structure. And performs the basic function of supply of blood and the required materials i.e nutrients to the different cells and organs.
Explanation:
Plants in forest are not supplied with fertilizer by human beings ,yet they get mineral and salt from the dead decaying body of plants and animal found in the forest .Animal die in forest get converted into humus by bacteria and other animals .Sources of energy is transferred from one life to other by different means in this way plants in forest get plant and mineral.
Answer: The basic tissue structure of the mucosa layer of the alimentary canal consists of:
--> mucous membrane
--> lamina propria
--> muscularis mucosa
Explanation:
The MUCOUS MEMBRANE forms the innermost layer of the alimentary canals which includes the stomach and the duodenum (small intestine) . It's major functions is protection, secretions and absorption. The type of mucous membrane found in the stomach and duodenum is the Columnar epithelial cells. Not numerous gastric glands are situated below the surface in the mucous membrane of the stomach. They consist of specialised cells that secrete gastric juice that aids in the digestion of food. While the duodenal mucosa consists of mucous producing goblet cells. These cells produce a viscous, alkaline mucus that protects against the acidic gastric juices and pepsin. The folding of these mucosal cells (microvilli) provides a large surface area to optimize nutrient absorption.
The LAMINA PROPRIA: This layer separates the mucous membrane and the muscularis mucosa. It is made up of connective tissues which supports the blood vessels that nourishes the inner epithelial layer. In both the stomach and duodenum, digested nutrients are absorbed into the capillaries.
MUSCULARIS MUCOSA: This is made up of thin layer of smooth involuntary muscles. The contraction and relaxation of these muscle layers occurs in waves, which push the contents of the tract onwards. This type of contraction is called peristalsis which occurs in the duodenum. While in the stomach, these muscles allows for the churning motion characteristic of gastric activities.
The mucosa layer in the alimentary canal comes into direct contact with food and consists of three layers: epithelium, lamina propria, and muscularis mucosae. The stomach mucosa secretes mucus, hydrochloric acid, and digestive enzymes, while the duodenum's mucosa contains glands that neutralize stomach acid, protecting the intestinal wall and enabling absorption.
The mucosa layer in the alimentary canal is the innermost layer that comes into direct contact with food. This layer consists of three sublayers: epithelium, lamina propria, and muscularis mucosae. The epithelium is made up of simple columnar cells responsible for secretion and absorption. The lamina propria is composed of loose connective tissue supporting the epithelium, and the muscularis mucosae is a thin layer of muscle that causes local movement of the mucosa.
The mucosa in the stomach has a special epithelium that secrets mucus, hydrochloric acid, and digestive enzymes, aiding in both protection and the breakdown of food. Its unique feature is the presence of gastric pits and parietal cells that secrete hydrochloric acid.
In contrast, the mucosa in the duodenum, part of the small intestine, contains Brunner's glands which produce an alkaline secretion rich in bicarbonate and mucus. The purpose of this is to neutralize stomach acid and protect the intestinal wall, enabling absorption to take place.
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