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max2010maxim [7]
3 years ago
11

Which of the following areas in a secondary lymphoid organ allows intimate contact between blood and the lymphocytes?

Biology
1 answer:
VLD [36.1K]3 years ago
5 0
The answer is White pulp of the spleen
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What are the similarities and differences between carrier proteins and channel proteins​
kvv77 [185]
* Channel proteins- these are proteins with a hydrophilic pore where specific ions are able to pass through the membrane. Each channel protein is specific to an ion. This is the only way ions can travel through the membrane. They are trans membrane proteins.

* Carrier proteins- these are proteins which allow larger or polar molecules through the membrane. They are trans membrane proteins.

Carrier proteins essentially “carry" signals that are not soluble in aqueous solution through the blood stream to their target cells. Carrier proteins for hydrophilic signals prevent degradation of the signal. Channel proteins are embedded in cell membranes. They often are receptors (though not always), and when activated, allow specific ions to pass through the membrane.

A channel protein is a special arrangement of amino acids which embeds in the cell membrane, providing a hydrophilic passageway for water and small, polar ions. Like all transport proteins, each channel protein has a size and shape which excludes all but the most specific molecules

The carrier protein facilitate diffusion of molecules across the cell membrane. The protein is imbedded in the cell membrane and covers the entire membrane. This is important because the carrier must transport the molecule in and out of the cell.
3 0
3 years ago
Under normal conditions, what would be the PRIMARY mechanism that his body would use to reduce the amount of PCO2 in the blood
sergeinik [125]

The pH of blood if pco2 drops to 35.0 mmHg is 7.459

The pH of the blood can be calculated using the Henderson- Hasselbalch equation, which explains the relationship between acid dissociation constant pKa and pH in biological and chemical systems.

pH = pK + log ( HCO3- / ( 0.03 * PCO2 ) )

pK is 6.1 for the bicarbonate buffer system.

HCO3- = 24mm

PCO2  = 35.0 mmhg

pH = 6.1 + log ( 24 / 0.03 * 35.0 )

    = 6.1 + log ( 24 / 1.05 )

    = 6.1 + log 22.8571

    = 6.1 + 1.3590

    = 7.459

Hence, the pH of blood is 7.459

Learn more about the pH of blood here brainly.com/question/3919636

#SPJ4

8 0
1 year ago
Which best describes the process of making recombinant DNA? The isolated DNA is inserted into a mechanical vector for cloning. T
OLEGan [10]

Answer:

The correct answer would be "The sticky ends of fragmented DNA are joined with vector DNA".

Recombinant DNA or rDNA refers to the DNA that has been artificially formed by joining the fragments of DNA of two or more species.

The fragments are joined by creating the sticky ends in the DNA fragments.

These sticky ends are complementary to each other which helps the fragments to join to each other.

For example, the sticky end of a gene of interest and the sticky end of the vector DNA joined together to form a recombinant vector.

4 0
2 years ago
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Which statement is true according to plate tectonics theory?
Solnce55 [7]
I think it would be D 
8 0
2 years ago
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What is the name for all the neurons in the central nervous system?
Alex_Xolod [135]

Answer:

B. Interneurons

Explanation:

The basic unit of the central nervous system is the neuron or the nerve cells. Billions of neurons allow the different parts of the body to communicate with each other via the brain and the spinal cord. A fatty material called myelin coats nerve cells to insulate them and to allow nerves to communicate quickly.

7 0
3 years ago
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