- 50%
- 50%
- False
i hope this helps you out :D
Answer:
Lactase and Carbonic anhydrase are enzymes;These are organic catalyst (proteins) that speed up the rate of organic chemical reactions,in living organism.They acts on the organic reactions by reducing the activation energy for the reaction to occur,but remain unchanged at the end of the reaction.
Explanation:
Lactose is an enzyme in the small intestine needed for the break down of Lactose,a diasaccharides to glucose and galactose.it is acts in the brush borders for this to occur.
Carbonic anhydrase is an enzyme in the cytoplasm needed for the the catalysis of C02 with H20 to form Carbonic acid(H2CO3),protons, and hydrogen carbonate in a reversible reactions.
The catalysis is needed for regulation of blood pH during respiration.
As stated up,molecules of catalyst do not change in the organic chemcial raxction they act upon.Rather they lower the activation energy for the faster completion of the rate of reaction.
Therefore in the question above the amount of the catalayst will remain the same it was at the beginning of the reaction.This is the major properties of catalysts.
Mosquitoes have a 6-tube system in their "snout". It's a big big needle with 6 parts to it. 4 of those parts are used to pierce the skin of the human. The other 2 parts are 2 tubes. One of those tubes sends saliva from the mosquito down into the human. The other sends blood up from the human into the mosquito.
Now, unlike some viruses (like dengue and Zikka), HIV cannot replicate inside a mosquito. HIV replicates inside human T-cells...there aren't any of those inside a mosquito gut. Eventually the HIV is destroyed and never makes it to the saliva of the mosquito - so the mosquito can never infect a human with HIV.
Physicians frequently encounter ethical dilemmas in all aspects of patient care. The resolution of these dilemmas should always be achieved with a focus on maximizing benefits for, respecting the preferences of, and minimizing harm and suffering to the patient. Patients should be briefed on all of their treatment options, including potential risks and benefits, prior to treatment. Competent patients, or in some cases, their surrogates, have the right to withdraw consent for any intervention, at any time, for any reason. A physician is ethically and legally obliged to keep a patient's medical information confidential except in isolated cases, in which the patient is at risk of harm to self or others