While working in labs with chemicals or specimens one should follow good laboratory practices. Professional conduct and manner should be maintained during working in labs.
The action that should be taken by a student is:
Option B. Wear a lab apron or lab coat over the clothing.
The good lab practices can be explained as:
- To avoid staining clothes individuals should wear lab coats over their clothes.
- Lab coats avoid staining and splashing your skin and clothes from chemicals and dyes.
- Lab coats are designed to protect against corrosive chemicals from soaking into the skin.
Therefore, the student should wear lab coats and aprons.
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~Gymnosperms have developed over the course of its evolution, structures that solved the main limitations present in the Pteridophytes in relation to sexual reproduction, and in the <span>terrestrial environment.
</span>~The organisms that have adapted fully to the terrestrial environment feature adaptations in body to retain water, thus avoiding <span>dehydration.
~ @</span> Pteridophytes:Vascular tissue: water and minerals & <span>organic
material.
</span>Vascular tissue: increasing efficiency in transport of water & mineral salts with increased plant growth.Dependence on water for fertilization with anterozoides <span>furniture.</span>
Acidic rain that can deteriorate limestone bases structures
The ends of the actin filaments are anchored to the Z-line or disk.
The sarcomere is the primary functional unit of muscle fiber. It is flanked by a Z-band on each end with adjoining I-bands. The Z-band or disk is a dense fibrous structure composed of actin, α-actinin as well as other proteins.
Thin filaments or actin filaments are anchored at one end at the Z-band. Titin is connected to both the Z-band and the M-line. Thick filaments are attached in the middle of the sarcomere at the M-line.
An intermediary filament protein forms a meshwork from one Z-disk to the next across the myofibril. These networks are joined by actin through the protein dystrophin to the sarcolemma.
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