According to the fluid mosaic model of the cell membrane,
a. there are fats floating in the protein layer.
b. carbohydrates function as membrane channels.
c. nonpolar ends of phospholipids are exposed to water inside and outside the cell.
d. protein molecules that perform important cellular functions float in a lipid bilayer.
e. there is a double protein layer in the plasma membrane.
The answer is C. Nonpolar ends of phospholipids are exposed to watee inside and outside the cell
Most Americans eat enough protein.
The daily value of the protein is not listed on the nutritional labels because the Americans eat enough protein in their diet.
Their requirement for the protein id fulfilled by the foods that they eat so there is no need for the daily value of the protein to be written on the package or nutritional labels.
The foods that is rich in protein are eggs, pulses, meat, soy beans and more which is generally eaten by the Americans in their daily diet.
2. Ribbon model
3. Wire frame
4. Simple shape
5. Simplified diagram
"attached is the question"
A protein can be visualized using different types of models. The models you use will depend on what you want the viewer to understand. A space-filling model would show all the atoms that composes a protein. This type of model makes use of spheres, emphasizing the globular structure of the atoms. They are proportional to the actual size of the atom they represent. Each type of atom is a different color. Even the distances of the spheres are proportional to its size to help viewers better see the actual shape of the protein. Ribbon model is also a 3D representation of a protein. It shows the only the backbone of the protein. It highlights the folds and coils in a protein, generally the organization. Some versions show the α-helices as ribbons and β-strands are shown as arrows. Wire frame model is like the ribbon model but it also shows the side chains. It shows the different atoms that are involved. Thin wires show the bonds made between the atoms and the wires bend show the relative location of the atoms. A simple shape focuses more on the function of the protein overall rather than the internal structures. The shape does not represent a particular protein, merely using a general shape to represent a protein. A simplified diagram shows more detail than the simple shape. It shows the internal structures as well but like the simple shape model, it focuses more on the function of the protein. A version of it is a solid shape, which does not show the internal structure.
1. The space-filling model is used when one wants to show the three-dimensional shape of a protein, comprising all of the atoms constituting it.
2. A simplified diagram is used when one desires to show the general shape of a protein, along with certain essential functional details like coils and folds.
3. A ribbon model is used when one desires to demonstrate the three-dimensional shape of a protein, comprising the backbone composition, coils, and folds.
4. A simple shape is used when one desires to demonstrate a generalized protein in which the focus is on the function of the protein in spite of its structure.
5. A wireframe model is used if one wants to demonstrate the three-dimensional shape of a protein by showing the amino acid side chains and their associations.
3. post-translational modification small RNA (sRNA) regulation regulation of transcription
The post-translational modification does not affect the amount of protein present because this type of change is only done to the protein when the translation process has finished, and there is a protein as a result. After the translation, the final product can suffer modifications such as the addition of different components, or enzymatic modifications. In other words, they are chemical changes that the protein experiences that do not affect the amount of protein present.
Certain segments of DNA will be lost in the translation process, rendering certain genes obsolete in particular cells.
C. They generally contain seven membrane-spanning α helices.
The G protein-coupled receptors are components of signal transduction through G protein. Here, a plasma membrane receptor with seven transmembrane helical segments serves as a G-protein coupled receptor. These receptors are the integral membrane proteins and have seven hydrophobic regions of 20 to 28 amino acid residues.
These hydrophobic alpha-helices span the membrane back and forth seven times. Binding of a signaling molecule to the G-protein coupled receptor promoters a conformational change in the receptor’s intracellular domain. The activated receptor then triggers the replacement of bound GDP to the G protein by GTP and thereby activating it.
Aspartic acid or aspartate is a polar amino acid and is negatively charged. It is generally present on the surface of the proteins so that it can interact with the aqueous environment. Sometimes it can be buried within the protein and play a role in stabilization of the protein. It pairs with a positively charged amino acid to form hydrogen bonds which increases the stability of the protein.
If aspartic acid has to be substituted with other amino acid without affecting the protein structure and stability it has to be with a negatively charged polar amino acid like it. Glutamic acid is very similar to aspartic acid in structure and has same polarity. It just has a smaller side chain compared to aspartic acid. So substitution with glutamic acid will most likely allow the protein to fold normally.
idk the answer to the first 2 but i can answer the 3rdits bugs
In cell differentiation, the objective is to differentiate cell on the basis of their functions and organs they are going to form. In this exercise, the cells need to get on an off to define the type of the cell and their function. Hence option A, C is important for cell differentiation. Information from DNA is transferred to mRNA for cell differentiation; hence option D is also correct. While option B has no role in cell differentiation, in fact loss of DNA segment could cause mutation i.e deletion.
Hence, option B is the correct answer
a. population growth is decreasing
so the population decreased by 24 because 3+3+8+10+2=26-2=24.
hoped i !
a. there are fats floating in the p...