What is the most penetrating kind of radiation product that can be shielded with aluminum foil? alpha particles beta particles gamma rays high-energy photons

The answer is beta particles. A beta particle is a positron or electron that is released at very high speed and energy from a nuclear decay reaction. Alpha particles are much heavier being composed of two protons and two neutrons bound together (a helium particle). The reason beta particles are able to be stopped by a thin foil of aluminum foil is because they are charged particles hence interact (electromagnetically) more with matter than other types of radiations. This is also why beta particles have a range of approximately one metre in air, a distance also dependent on the particle energy.

B

Beta Particles.

Explanation:

q: compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city,

a:

comparing this to the inside of a food building/company.

all cells are surrounded by a plasma membrane, which protects the cell from its environment, keeping toxic substances out of the cell. it regulates which molecules are allowed to enter and exit the cell.

regulates all cell activity such as cellular metabolism, and growth in addition to storing and maintaining the cell's dna for transcription and replication. determines what proteins to make.

contains the organelles; site of most cell activity

the place where ribosomes do their working activity.

builds the proteins.

prepares proteins for use or export.

responsible for breaking down and absorbing materials taken in by the cell.

maintains cell shape.

transforms one form of energy into another.

dna is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).