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2 years ago

Why is the research on plant material mentioned in the article important to Rohit Karnik’s work on membranes?

2 answers:

7 0

Answer: The plant tissues act as a filter to remove harmful bacteria. Rohit Karnik designs membranes used in fraction system.

Explanation: Like wood, these membranes allow water to pass through, but not bacteria. Mr. Karnak might be able to apply the research on the wood to his designs.

Sunny_sXe [5.5K]2 years ago

6 0

Answer:

The plant tissues act as a filter to remove harmful bacteria. Rohit Karnik designs membranes used in filtration systems. Like the wood, these membranes allow water to pass through, but not bacteria. Mr. Karnik might be able to apply the research on the wood to his designs.

Explanation:PLATO

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Calculate the mass defect for oxygen-16 given this data. Round to the 5es001-1.jpg decimal place. mass of an oxygen-16 atom: 15.

Naya [18.7K]

Answer:

Explanation:

Given parameters:

Mass of oxygen atom = 15.994914amu

Mass of a proton = 1.00728amu

Mass of a neutron = 1.00866amu

Unknown:

Mass defect = ?

From the periodic table, the number of the elementary particles in a neutral Oxygen atom is given below:

Number of protons = 8

Number of neutrons = 8

Number of electrons = 8

Solution

The mass defect examines the difference between the actual mass of an atom and sum of masses of the nucleons.

The mass of an atom is concentrated in the nucleus which contains protons and neutrons. Electrons have little to no weight compared with the nucleons.

To calculate the mass defect, we first know the mass of the nucleons first:

1 proton has a mass of 1.00728amu

8 protons will weigh: (8 x 1.00728)amu = 8.05824amu

For the neutrons:

1 neutron has a mass of 1.00866amu

8 neutrons will weigh: (8 x 1.00866)amu = 8.06928amu

Mass of the nucleons = mass of protons + mass of neutrons

= 8.05824amu + 8.06928amu

= 16.12752amu

The mass defect = mass of the nucleons - mass of the atom

= 16.12752amu - 15.994914amu

= 0.132606amu ≅ 0.13261amu to 5 decimal places

6 0

3 years ago

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What second messenger most directly causes calcium ions to be released from intracellular stores?

NemiM [27]

Answer: adenylyl cyclase inositol triphosphate mainly known as IP3 causes the release of Calcium ions directly from the inracellular stores and causea contraction.

Explanation:

IP3, inositol phosphate is a second messenger a signaling molecule. It is made by hydrolysis of phosphatidylinositol 4,5-bisphosphate (PIP2), a phospholipid that is located in the plasma membrane, by an enzyme phospholipase C.

IP3 binds to the calcium channels and opens Ca2+ channels that are embedded in the ER membrane, releasing Ca2+ into the cytosol. Calcium ions released may cause contraction and regulate the Ca2+ channels in the membranes.

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2 years ago

What is a group of cells that can do certain things as group called

love history [14]

Answer:

Tissue

Explanation:

The levels of organization go as follows:

Atom - the building blocks of all living and nonliving material

Molecule - two or more atoms that join together in chemical bond

Organelle - two or more molecules working together to perform a particular function in a cell

Cell - the smallest unit that exhibits all of the characteristics of life

<u>Tissue - two or more cells that work together to perform a particular function</u>

Organ - two or more tissues that work together to perform a particular function

Organ System - two or more organs that work together to perform a particular function

Multi-Celled Organism - two or more organ systems that work together

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3 years ago

What consequence does higher altitude have on people?

Marta_Voda [28]

Depending on baseline oxygen saturation and the pathological condition of the lungs, risks associated with altitude exposure include profound hypoxemia, pulmonary hypertension, disordered ventilatory control, impaired respiratory muscle function, and sleep‐disordered breathing.

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2 years ago

Homeostasis is ________.

vovangra [49]

Answer:

the tendency of the body to maintain inner balance despite changes in external conditions

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3 years ago

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