Cytotoxic T cells use two basic mechanisms to destroy target cells: 1. Cytotoxic T cells release perforins which create pores on the target cells and granzymes which stimulate the apostosis of the target cells by exocytosis. 2. Cytotoxic T cells bind specific membrane receptors on the target cells and stimulate apostosis process which eliminate the target cells.
Answer:
No
Explanation:
I picked "No" because, the population doesn't stay the same all the time.
Answer:
Osteoclasts.
Explanation:
Osteoclasts may be defined as the cells that helps in the breakdown of the bone tissue. Osteoclast plays an important role in the maintenance of the bone structure.
Osteoclasts cells are found in the small depression of the endosoteal surface. This is also known as Howship's lacunae. They shows the foamy appearance in the cell. The osteoclast can form the specialized cell membrane known as ruffle border.
Thus, the correct answer is option (B).
Well, the greenhouse effect is a natural process by which some of the radiant heat from the Sun is captured in the lower atmosphere of the Earth, thus maintaining the temperature of the Earth's surface. The gases that help capture the heat, called “greenhouse gases,” include water vapor, carbon dioxide, methane, nitrous oxide, and a variety of manufactured chemicals. Some are emitted from natural sources; others are anthropogenic, resulting from human activities.
Over the past several decades, rising concentrations of greenhouse gases have been detected in the Earth's atmosphere. Although there is not universal agreement within the scientific community on the impacts of increasing concentrations of greenhouse gases, it has been theorized that they may lead to an increase in the average temperature of the Earth's surface. To date, it has been difficult to note such an increase conclusively because of the differences in temperature around the Earth and throughout the year, and because of the difficulty of distinguishing permanent temperature changes from the normal fluctuations of the Earth's climate. In addition, there is not universal agreement among scientists and climatologists on the potential impacts of an increase in the average temperature of the Earth, although it has been hypothesized that it could lead to a variety of changes in the global climate, sea level, agricultural patterns, and ecosystems that could be, on net, detrimental.
Hope this helps!
Answer:
From glycolysis only 8 ATP molecules are obtained
Explanation:
The 8 molecules of glycolysis 6 come from NADH, which is the one that carries these molecules by dissociating, giving NAD + H + as a product.
The metabolic pathway of glucose actually generates 38 ATP, but this value would be the sum of 8 from glycolysis, 6 from the pyruvic acid pathway and 24 from the krebs cycle ... These last two pathways are part of cellular respiration .
