B, a nucleus. Nuclei are membrane-bound organelles inside eukaryotic organisms. Eukaryotes are protists, fungi, plants, and animal cells. A bacteria is not a eukaryote, it is a prokaryote, so it does not have the membrane-bound structure of the nucleus.
Be careful, though, bacteria still have DNA. It is simply located in the center of the cell and is not encased in a membrane.
Water molecules ,some ions ,non polar compounds and glucose can pass through a cell membrane
Humans need both red and white blood cells in order to stay healthy and function well. You’re red blood cells carry oxygen. White blood cells protect the body against infectious diseases and invaders.
COMPLETE QUESTION:
Why might better-insulated buildings make air pollution more of a problem?
ANSWER: It prevents the passage of waste gases out of the building and inflow of fresh air which can leads to health related issues.
EXPLANATION:
Building insulation reduces the heat surplus in warmer weather condition and reduces the heat loss during cold weather condition.
The negativity that comes with insulating a building is an increased air pollution. In the process of preventing heat loss to the environment by insulating a building, there's a resultant reduction or sometimes blocking of air flow inside the building. This will cause the concentration of waste that are in gas form inside the building, emanated from human activities like cooking (fuel burning), respiration, and other activities.
Overtime, this trapped in of waste gases can leads to sick building syndrome (an health related issue).
Answer:Prothrombin is transformed into thrombin by a clotting factor known as factor X or prothrombinase; thrombin then acts to transform fibrinogen, also present in plasma, into fibrin, which, in combination with platelets from the blood, forms a clot (a process called coagulation).
Explanation:
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