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zysi [14]
3 years ago
14

Explain how the fluid mosaic model describes the plasma membrane

Biology
1 answer:
Zepler [3.9K]3 years ago
5 0

Answer:

S.J. Singer and Garth L. Nicolson proposed the fluid mosaic model to describe the plasma membrane structure. They explained that the plasma membrane is a mosaic of carbohydrates, phospholipids, carbohydrates, and proteins.

This mosaic nature provides the fluid characteristic to the plasma membrane. This fluid behavior of the plasma membrane allows the movement of phospholipids and protein in the plasma membrane.  

This movement of membrane components plays an important role in the transport of molecules across the cell.

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Primates reproductive strategies (compared to other mammals)
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<span>The answer is (D) are k-selected. Primates are the most K-selected among mammals. Individuals produce only a few whom they invest a great amount of parental care. Reproductive strategies main goal is to produce offspring and successfully rear them to adulthood.</span>

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Which macromolecule is often made of three fatty acids bound to a glycerol molecule?
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Lipids are made of three fatty acids bound to a glycerol molecule
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Question 4(Multiple Choice Worth 4 points)
soldi70 [24.7K]

CH2O5 +603-6CO2 + 6H2O + energy isn't the evidence of conservation of mass in cellular respiration.

Option B

<h3><u>Explanation:</u></h3>

Law of conservation of mass states that mass can neither be created nor be destroyed. And this law holds good for all sorts of chemical reactions except the nuclear reactions.

In case of cellular respiration, one molecule of glucose reacts with 6 molecules of oxygen to produce 6 molecules of carbon dioxide and 6 molecules of water and energy. Now this energy that is produced isn't produced in expense of mass, but in expense of chemical bonds that are present in glucose molecules.

Also if we calculate the number of atoms on each side of the reaction, the number of atoms remain same as well as number of atoms of individual elements also remain same.

3 0
3 years ago
A single atom of an element has 11 protons, 11 electrons, and 12 neutrons. Which element is it?
MAVERICK [17]

Answer;

Sodium (Na)

A single sodium atom has 11 protons, 11 electrons, and 12 neutrons.


Explanation;

For any neutral atom, the number of protons is the same as the number of electrons. If an atom loses or gains electrons, it is called an ion.

A sodium atom contains 11 protons, so its atomic number is 11. Mass number is the total of the protons and neutrons together, thus sodium has a mass number of 23.

8 0
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multicellular organisms have four levels of organization ranging from simplest to most complex. the simplest is the cellular lev
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Answer:

The five levels of organization are:

  1. Cells
  2. Tissues
  3. Organs
  4. Organ Systems
  5. Organism

Explanation:

Five Levels of Organization:

Cells:

Cells are the fundamental levels of organization of living organisms. They are the basic structural and functional units of life. Cells are composed of different organelles that perform various functions and through division of labor, accomplish different cellular tasks. E.g, muscle cell, neuron (nervous system cells), nephron (specialized kidney cells) etc.

Tissues:

Cells that perform similar functions combine together to form tissues. For example, skeletal muscle tissue, cardiac muscle, vascular tissue etc.

Organs:

Organs are complex structures formed by the combination pf two or more types of tissues that perform specific but related functions. E.g, heart (pumps blood, contains cardiac muscle tissue), brain (conducts nerve impulses, contains neural tissue).

Organ Systems:

Organ systems are a combination of organs that perform related functions and work together to perform specific physiological functions. E.g, circulatory system (contains heart and circulatory system).

Organism:

This is the highest level of organization. An organism is a combination of cells, tissues, organs and organ systems that all work together to perform specific physiological functions.

7 0
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