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GrogVix [38]
3 years ago
5

I need help ASAP marking braniiest

Biology
1 answer:
Veseljchak [2.6K]3 years ago
4 0
C. Testes

They should’ve taught you this
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1) There is a larger number of hydrophilic molecules on the outside of a cell than on the inside. Identify the conditions that c
spin [16.1K]

Answer:

<h2>C. placing carrier proteins in the membrane.</h2>

Explanation:

If there is no barrier preventing molecules from moving molecules, then there will be large movement of molecules  from an area of high concentration to an area of low concentration. This passive process is known as diffusion. The phospholipid bilayer of a cell's membrane works as a barrier to large molecules, ions, and most hydrophilic molecules. Whereas small hydrophobic molecules can pass freely through the phospholipid bilayer, other molecules and ions are transported across the cell membrane with the help of transport proteins. Some transport proteins, allowing hydrophilic molecules and ions to passively move through them and across the cell membrane.

Examples: carrier proteins and channel proteins.

Placing carrier proteins in the cell membrane will allow the molecule to reach equal concentrations on the both the sides of the membrane and maintain that way over long time. In contrast, transport proteins known as pumps will use cellular energy, usually in the form of ATP, to transport molecules.

Placing equal numbers of intracellularly directed and extracellularly directed pumps would also equalize the concentrations of a molecule long over time. Pumps are to transport molecules against their concentration gradient, such as the sodium-potassium pump continuously moves sodium ions out of a cell.  

Through the use of carrier proteins, there is equalization of  concentrations of a hydrophilic molecule. This equalize the numbers of molecules on the inside and outside of the cell, but the pumps would continue moving the molecule inward, eventually resulting in more molecules inside of the cell than out.

3 0
3 years ago
The principle that the geologic processes that we see today have occurred throughout Earth’s history is called____.
nignag [31]

Answer:

A. Uniformitarianism

Explanation:

The principle of Uniformitarianism was proposed by a Scottish Geologist, James Hutton.

The principle is simply stated as "the present is the key to the past".

The processes that have occurred in geologic past is still in play today. By looking at rock sequences in our present day, we can actually have a firm grasp of the processes they have undergone in the past.

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3 years ago
After observing the F2F2 generation, what conclusion did Mendel come to?
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In his experiment mendel first crossed tall and short peas plant and noticed that the F1 plants were all tall. in the second experiment he crossed the the F1 plants and noticed that short plants reappeared in the rate of 25% in F2 generation. in his third experiment he crossed he crossed F2 plants and noticed that when he crossed some tall plants with the shot plants the F3 generation contained short plant in frequency of 50%. after this observations mendel concluded that there were genes that could be only expressed in homozygous state but not in heterozygous state. these genes were later referred to as recessive alleles wheres the genes that prevented the expression of recessive genes were later referred to as dominant genes.     
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3 years ago
5 productos alimenticios para perros
inysia [295]
1. comidas fermentadas

2. huevos

3. zanahorias

4. caldo de hueso

5. carnes de órganos
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3 years ago
•What are some examples of real-world applications that have improved our lives as a result of research where biology, neuroscie
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Also referred to as behavioral and cognitive neuroscience, the field has been used to study child development in highly stressful environment compared to to others especially with regards to school learning. Other examples include its use in the diagnosis of irrelegular sleep disorder and insomnia
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