All categories

2 years ago

There Must be a sort of biological catalyst in order to react the raw materials together. what is the substance?

Biology

1 answer:

julia-pushkina [17]2 years ago

5 0

Answer:

Enzyme

Explanation:

Enzymes are globular proteins that act as biological catalysts for various biochemical processes. they are involved in all biochemical reactions in our body.

Every chemical reaction requires activation energy i.e. the amount of energy needed to start a reaction between the reactants. Enzymes work by lowering this activation energy so that the reaction rate increases and the substrate is rapidly turned into the product.

You might be interested in

Describe the general types of diagnostic tests used to diagnose patients infected with HIV.

GenaCL600 [577]

AIDS

This disease leads to death by weakening the immune system of the human body. Common symptoms are related to the nervous system like dementia, anxiety, depression and insomnia.

TESTS

The tests for AIDS are discussed below.

The most common test for any disease is the blood test.

When human body is infected with the virus, the body produces anti-bodies to combat this infection. The blood test is positive if these anti-bodies are present in the blood sample of the infection person. However, it takes time for these anti-bodies to appear in the blood stream, hence, blood test should be done at regular intervals.

The tests specifically developed for AIDS are as follow.

ELISA or Enzyme-linked immunosorbent assay

If this test is positive, this is followed by a Western Blot test. The blot test is done in order to confirm the disease.

As said before, anti bodies take time to develop. If the test is done during this phase, it will be negative despite of the presence of virus in the blood stream.

HOME

Only one home test is approved. This is called Home Access Express Test. The kit of this home test is available at pharmacies.

SALIVA

The saliva from the patient’s cheek is obtained on a cotton pad. This pad is put in a vial which is then sent to the lab for testing. If the result is positive, blood test is done to confirm the disease.

VIRAL LOAD

As the name suggests, this test measures the quantity of virus present in the blood. This test is done to either test the presence of HIV or to track the progress of the treatment of HIV.

WESTERN BLOT

This test is done when the result of ELSA test is positive. This test confirms the disease.

All the above test if turn out negative and the patient still doesn’t recovers, this testing should be done periodically until the disease is confirmed.

6 0

2 years ago

Type of digestion that increases surface area

zubka84 [21]

Answer:

Mechanical digestion

Explanation:

8 0

3 years ago

Assignment Summary For this assignment, you will model the structures of the cell and describe their functions. You will do this

iren [92.7K]

The model of the structures of the cell and and their functions is given in the image attached.

<h3>What are the cell structure and their functions?</h3>

Some explanation on structure of cells is given below:

The nucleus:

This is known to be the key or major organelle that tends to sustain or hold the genetic information that is needed for reproduction and cell growth as well as development.

Note that all cell is known to be made up of one nucleus and also a kind of membrane-bound organelles that can be seen in the cytoplasm.

Mitochondria:

This is known to be a double membrane-bound organelle that is known to function by acting as the site for the energy transactions and it is made for the survival of all cell.

Therefore, The model of the structures of the cell and and their functions is given in the image attached.

Learn more about Cell structure from

brainly.com/question/13880600

#SPJ1

5 0

2 years ago

3 The plasma membrane is semipermeable because -

Irina-Kira [14]

Answer: B) proteins in the membrane act like gates to control entrance and exit of molecules.

Explanation: Plasma membrane is composed of phospholipids bilayer in which the hydrophobic regions of the phospholipids face each other to form the core of the bilayer. Proteins are embedded in the bilayer through an interaction between the amino acid side chains and the nonpolar acyl chains of the phospholipids. The embedded membrane proteins form channels for passage of ions and other molecules. Each membrane protein is selected for one or more ions or molecules that passes through it. The membrane is said to be semipermeable because it allows the passage of some molecules and excludes the passage of others.

6 0

3 years ago

What is the sweet substance made by bees?

brilliants [131]

Honey is the sweet substance made by bees.

Hope this helps. :)

6 0

3 years ago