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Vlada [557]
3 years ago
15

In humans, one function of the skin is to prevent water loss. Skin releases water or holds in water when necessary.

Biology
1 answer:
Talja [164]3 years ago
8 0
The cuticle and stomata because both parts function to regulate water absorption and release for the plant.
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21) Some cells produce and secrete high levels of digestive proteins. What organelle would you expect to be abundant (more than
WINSTONCH [101]
Hey there,

Answer: B, Lysosome 

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6 0
3 years ago
Describe the structure and function of nucleic acids.
Morgarella [4.7K]
Nucleic acids<span> are long chains made of individual, repeated units called monomers. The particular name for the units of </span>nucleic acids<span> are called nucleotides and each contains three things: a phosphate group, a sugar (deoxyribose in DNA and ribose in RNA) and a nitrogenous base. </span>
4 0
3 years ago
Which of the following molecular motors is associated with intermediate filaments?
azamat

Answer: d. none of the other answers

Explanation:

Enzymes that turn chemical energy into mechanical work are molecular motors.

There are three main components of cytoskeleton including microtubules, actin filaments and Intermediate filaments. Only actin  filaments and microtubules carry the motor-driven transport on the cytoskeleton.

The most important feature of intermediate filaments is to provide the plasma membrane with mechanical support where it comes into contact with the extracellular matrix and other cells.

Unlike microtubules and microfilament , intermediate filaments are not involved in motility of the cells, hence do not associat with molecular motors.

Hence, the correct option is d.

3 0
3 years ago
Are spores formed by the fern sporophyte formed by meiosis or mitosis
Novosadov [1.4K]
It's formed by meiosis.
8 0
3 years ago
A cellular structure that can be found in each type of cell that is unique to each type of cell, but that has a similar function
34kurt

Answer

Complex barrier to the flow of substances out of the cells,and restrictions to inflow of unwanted substances into the cells. The hydrophobic and hydrophilic nature of the cell membrane controls the entry of substances from the extracellular medium into the intracellualr. In addition the polarity restricts certain substance movement across the walls.

Serve as the selective channels  for the  influx of certain substances into the cells, and the out flux of wastes.This is through ion channels for the movements of ions across.

Provide insulation to the cells,to maintain the constant internal temperature,this is through the presence of lipids as( Phospholipids and cholesterol).The latter prevent the clogging of the lipids in the cell membrane therefore preventing frozen up of the cell membrane,providing insulation.

Separation of metabolic process in the cell.

Explanation:

Cell membrane-This is present in all cells.But the variation of its constituents makes it unique to each cell. Although it performs the same role, the location and role the cells it bounded, reflects its  constituents, it is made up of lipids, carbohydrate, protein and cholesterol

6 0
3 years ago
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