Answer:
B (active transport using ATP)
Explanation:
Movement of substances normally occur in the direction of concentration gradient/difference i.e. the difference in concentration of a substance across a membrane. Letting molecules diffuse or pass down their concentration gradient does not require energy but pumping those molecules against gradient requires energy in form of Adenosine triphosphate (ATP). This process is called Active transport.
In order to perform certain cellular processes, cells need to move substances from their surroundings into the cell across their cell membrane. Moving this substances against the concentration gradient between the cell membrane and its extracellular fluid requires energy (ATP).
An example is the sodium-pottasium pump employed by animal cells in which they expend energy to move K+ molecules into the cell and Na+ molecules outside the cell against the concentration gradient of their cell membrane and extracellular solution.
While leaving the laboratory temporarily in the middle of your work remove your lab coat and gloves.
<h3>Laboratory safety:</h3>
Washing your hands is the final thing you should do before leaving the lab after an experiment. Since most chemicals are somewhat harmful, wash your hands before you leave. After taking the necessary measures, inform the teacher.
With its risky processes, hazardous chemicals, and fire threats, the science laboratory is inherently unsafe. Avoid coming into contact with chemicals directly. Never taste, smell, or inhale lab chemicals. After taking off your gloves and before leaving the work area, wash your hands and arms thoroughly with soap and water. In a laboratory, never consume food or liquids, chew gum or tobacco, light up, or use cosmetics. These fundamental safety offer guidance on conduct, cleanliness, and safety to prevent laboratory mishaps.
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It's a prokaryotic cell type.