1. The correct answer is a.
Neurons communicate using action potentials, that travel down neurons using an electrochemical cascade. These action potentials are mediated by changes in the polarity of the cell membrane. At the beginning of the action potential, the Na+ channels open and this causes an influx of Na+ into the nerve cell, triggering, in turn, the depolarization of the membrane.
2. The correct answer is b.
The Krebs cycle (also known as the citric acid cycle) is a process involved in cellular respiration. The Krebs cycle happens in the mitochondria and involves the transformation of Acetyl coA to molecules, that will then be used to create ATP (the energy molecule). Acetyl coA goes through several chemical transformations and the energy released is transferred to NAD and FAD. In a process before the Krebs cycle, Pyruvate (produced by glycolysis) forms the acetyl coA. Therefore, pyruvate does not intervene in the Krebs cycle.
3. The correct answer is b.
The neuromuscular junction is a chemical synapse connecting a motor neuron and a muscle fiber. The signal transmitted from the motor neuron to the muscle fiber triggers the muscle contraction. The process is mediated partly through ion channel linked receptors. When acetylcholine (the ligand) binds to the receptor, the ion channel part of the receptor opens and this produces an influx of ions intracellularly.
4. The correct answer is c.
Cystic fibrosis is a inherited disorder that affects mostly the lungs, but also other organs of the body, such as the liver and the pancreas. It is caused by a mutation in the CTFR gene. This gene encodes a protein that is a chloride ion channel and is responsible for the movement of water in and out of the cells. The mutations in this gene result in a disruption of this ion channel, causing a change in the consistency of the mucus and sweat produced by the organism.
5. The correct answer is d.
The CTFR protein (the product of the CTFR gene) is a chloride ion channel regulated by cAMP. This ion channel is activated by phosphorylation, caused by cAMP - dependent protein kinase (PKA). PKA needs to bind two cAMP in order to be activated and able to phosphorylate other proteins.
Answer:
Assess the general condition of patient
, examine the mental status for consciousness or unconsciousness
, ensure airway, breathing, circulation
, stop bleeding
, shift the patient for medical help and CPR can be initiated as per the need. To stabilize the patient, provide a recovery position
, warm the patient with the clothes available, remove any wet clothes, and rubbing of the soles and palms can create a heat and prevent hypothermia
. A fall from 30 feet needs a complete assessment and care. If patient is conscious and mobile the medical help can be called but if the victim is unconscious, partially responsive,disoriented, bleeding then the patient has to be evacuated to a healthcare facility.
Explanation:
Parents association in their child's education is certainly essential. It makes a major contrast in their kid's execution and scholarly assessment. We, the parents are known not to be the good examples for children.
Kids likewise take care of their parents as an aide, a source and an imperative counsel. A parent can help children manage bunches of issues with their steady direction and backing.
Answer:
The correct answer is d. circulatory, nervous, urinary, and endocrine systems
Explanation:
Many organ systems together helps in regulating the blood pressure in the body. For example, in the case of stress, the autonomous nervous system helps in raising the heart rate that increases blood pressure in arteries and veins.
Circulatory system contains blood vessels, blood and heart and heartbeat and blood vessel thickness changes with the change in some endocrine hormone levels like cortisol, adrenalin which regulates the blood pressure.
The urinary system helps in the regulation of blood pressure by filtering water from blood. Therefore circulatory, nervous, urinary, and endocrine systems work together and regulate blood pressure.
