An open circulatory system simply
means that the blood flows out of vessels and into the spaces or sinuses. Invertebrates,
insects and crustaceans has an open circulatory system where pump blood goes
into a hemocoel and diffusing back to the circulatory system between cells. In
other animals, the heart pumps the blood into the body cavities, spaces or
sinuses, where the blood surrounds the tissues.
Answer:
Cell-mediated immunity develops through a network of interactions that results in defense against microorganisms that survive within phagocytes or other cells. The response is initiated by the recognition of intracellular microorganism antigen by T cells through the histocompatibility complex. In the CD8 response, only the target cell carrying the class I associated antigen can be lysed or induced to apoptosis. In another mechanism of the cellular response, CD4 + Th1 T cells activate, for example, cytokine-infected macrophages such as IFN. When a pathogen resists the effects of activated macrophages, chronic infection may develop.
The hormonal immunity response leads to the destruction of extracellular microorganisms and prevents or decreases the spread of intracellular cells by neutralizing, opsonizing and activating the complement system.
The number of calories on a Halloween stash depends on the type of candies and the number of units of each. If the stash contains 5 units of each of these candies: chocolate bars, taffies, lollypops, and candy corn the total number of calories is 1,650.
Calories are the most common unit used to define the energy a specific food gives to your body. For example, an apple has 52 calories, while a banana has 89 calories.
Considering this, in a Halloween stash the calories depend on two factors:
- The types of candies or products
- The units of each one
Let's suppose there are 5 units of each of the following candies:
- Chocolate bars
- Taffies
- Lollypops
- Candy corn
Let's now calculate the calories
- Chocolate bars = 220 calories x 5 units = 1,100 calories
- Taffies = 20 calories x 5 units = 100 calories
- Lollypops = 83 calories x 5 units = 415 calories
- Candy corn = 7 calories x 5 = 35 calories
Add all the previous results:
1,100 + 100 + 415 + 35 = 1,650 calories in total
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Zippy Xylem. The xylem of a plant is the system of tubes and transport cells that circulates water and dissolved minerals.
