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Are basic dyes positively charged and how does this property affect their interaction with biological molecules?
Yes, basic dyes are positively charged. This property allows them to interact with biological molecules, which are often negatively charged, through electrostatic attractions. This interaction helps basic dyes to bind to and stain specific components of cells and tissues, aiding in their visualization under a microscope.
How does Nigrosin work?
Nigrosin is a negatively charged acidic dye that is commonly used in staining techniques in microbiology and histology. It works by binding to positively charged structures in cells, such as nucleic acids, giving them a dark coloration which aids in visualization under a microscope.
Difference between basic and acidic stains?
Basic stains are positively charged and bind to negatively charged components in cells, resulting in a darker coloration of the cells. Acidic stains, on the other hand, are negatively charged and bind to positively charged components in cells. The choice between basic and acidic stains depends on the type of tissue being studied and the specific cellular components that need to be visualized.
What 3 minerals control the osmosis?
Sodium, potassium, and chloride are three minerals that play a key role in controlling osmosis in the body. They help regulate the balance of fluids inside and outside of cells, ensuring proper hydration levels and maintaining cell function.
By what mechanism would root cells absorb needed minerals in the soil?
Root cells absorb needed minerals from the soil through a process called active transport. This involves using energy to move molecules against their concentration gradient into the root cells. The specific transport proteins in the root cells facilitate the uptake of different minerals such as ions like nitrate, phosphate, potassium, and others.
How osmosis works inside human body?
There are certain types of vitamins and minerals that exist inside cells and float around outside cells that are either positively and negatively charged. If the equilibrium of specific vitamins or a specific mineral is out and creates a deficit from its positive/negative charged counterpart vitamin or mineral; then water is the medium to increase or decrease the pressure of the cells absorption and nutrient uptake.
What is the inside of your bones made up of?
Calcium and other minerals and cells
What causes the fall in membrane potential in cells?
The fall in membrane potential in cells is caused by the movement of ions across the cell membrane, specifically the exit of positively charged ions like potassium or the entry of negatively charged ions like chloride. This disrupts the balance of charges inside and outside the cell, leading to a decrease in membrane potential.
What fills the space between the bone cells and minerals inside the ends of a bone are?
spongy pads
Are basic dyes positively charged and how does this property affect their interaction with biological molecules?
Yes, basic dyes are positively charged. This property allows them to interact with biological molecules, which are often negatively charged, through electrostatic attractions. This interaction helps basic dyes to bind to and stain specific components of cells and tissues, aiding in their visualization under a microscope.
What makes antimicrobial peptides to act on bacterial cells rather than human cells if peptides do not have hemolytic activities?
Bacterial membranes are richer in negatively charged phosphate groups. Antimicrobial peptides that are less hemolytic are rich in lys or arg groups that are positively charged.
A depolarizing graded potential?
A depolarizing graded potential is a change in membrane potential that makes the inside of the cell less negative. This can occur due to the influx of positively charged ions such as sodium into the cell. Depolarizing graded potentials are involved in generating action potentials in excitable cells.
Why are basic dyes more successful on bacteria than acidic dyes?
Basic dyes are positively charged and can easily bind to the negatively charged components of bacterial cells, such as the cell wall. This makes them more effective at staining bacteria. Acidic dyes, on the other hand, are negatively charged and repelled by the negatively charged bacterial cells, making them less successful for staining bacteria.
What happens when the inner cell membrane becomes positively charged?
When the inner cell membrane becomes positively charged, it can trigger various cellular responses such as the opening of ion channels, the activation of signaling pathways, and changes in membrane potential. These responses can affect cell function, signaling, and communication with other cells.
What cells are formed to the inside and the outside of the vascular cambium?
To the inside of the vascular cambium, xylem cells are formed. These cells are responsible for transporting water and minerals throughout the plant. To the outside of the vascular cambium, phloem cells are formed. These cells transport nutrients and sugars produced through photosynthesis.
How does Nigrosin work?
Nigrosin is a negatively charged acidic dye that is commonly used in staining techniques in microbiology and histology. It works by binding to positively charged structures in cells, such as nucleic acids, giving them a dark coloration which aids in visualization under a microscope.
How does the inside of the resting neuron compare to the outside in terms of electrical charge and Na plus concentration?
The concentration of negatively charged proteins and positively charged potassium ions, K+, is greater inside the cell than outside. In contrast, the concentration of sodium ions, Na+, is greater outside the cell than inside. The concentrations of Na+ and K+ ions are partly due to the action of the sodium-potassium pump, which actively moves Na+ out of cells while moving K+ in.
