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In-s [12.5K]
1 year ago
12

The body system responsible for circulation of the blood, including the heart, arteries, veins and capillaries, is called the:__

________
Biology
1 answer:
Ann [662]1 year ago
4 0

The body system responsible for circulation of the blood, including the heart, arteries, veins and capillaries, is called the cardiovascular system

<h3>Cardiovascular system</h3>

To supply the lungs with oxygen, the circulatory system (cardiovascular system) pumps blood from the heart. Following that, the heart pumps oxygen-rich blood through arteries to the rest of the body. Poor in oxygen blood is returned to the heart by veins to restart the circulatory system. The cardiovascular system plays a crucial role in supplying your body with oxygen and nutrients as well as removing waste. Your cardiovascular system is how your cells obtain the nutrients they require to function properly. It is crucial to take care of your heart by exercising, eating a healthy diet, and maintaining under control your blood pressure and cholesterol.

Learn more about Cardiovascular system here:

brainly.com/question/27364691

#SPJ4

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Which type of preparations allows drug effects to continue at the same level over a long period?
SCORPION-xisa [38]
The answer is: sustained (or extended) release preparation.

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3 0
3 years ago
What happens to pyruvate molecules formed in glycolysis in the absence of oxygen?
Mars2501 [29]
Absence of oxygen means anaerobic respiration ; which has 2 different pathways.

First Pathway ; Alcoholic fermentation which takes place in yeast.

Pyruvate is decarboxylated into ethanal releasing co2 as waste product.
Ethanal is toxic , so its reduced by help of NADH to ethanol in presence of alcohol dehydrogenase enzyme , and Free NAD is released to continue glycolysis.

2) The second pathway is Lactic fermentation which takes place in mammalian muscles.

Pyruvate accepts hydrogen and is converted to lactate by the help of enzyme lactate dehydrogenase , again free NAD is released to continue glycolysis.

Hope I made it clear enough :)
6 0
3 years ago
Please help
KATRIN_1 [288]

Answer:

Step 1: Pollination

In general, male gametes are contained in pollen, which is carried by wind, water, or wildlife (both insects and animals) to reach female gametes. The pollen is deposited on a plant's stigma, which is part of the pistil (the elongated part of a flower extending from the ovary). This process is called pollination.

Step 2: Germination

Within a few minutes, pollen tubes begin growing, or germinating, toward the egg cell. These tubes will provide a path for the sperm carried in the pollen to reach the egg.

Step 3: Penetration of the Ovule

The pollen tubes penetrate the ovule, which contains the female gametes.

Step 4: Fertilization

Sperm travel down the pollen tubes and fertilize an egg. Most angiosperms undergo double fertilization, where both an egg and the polar nuclei in the embryonic sac are fertilized.

Explanation:

^^^^^^^^

8 0
2 years ago
Please help, its for a test!
SVEN [57.7K]

(hi, i dont know about this one personally, but i found an answer somewhere else on the internet thatll hopefully help u)

Answer: They consist of long chains of C, H, and O.

Explanation:

In terms of chemical composition, lipids differ from nucleic acids and proteins because they mostly just contain carbon, hydrogen, and oxygen (except for phospholipids which of course contain phosphorous). In addition to those elements, proteins contain nitrogen and sulfur, and nucleic acids contain nitrogen and phosphorous.

Carbohydrates share the C, H, and O composition as lipids, but they differ in structure. Lipids are generally exist as triglycerides, which consist of a triple hydroxyl alcohol (glycerol) that has bonded to three long-chain carboxylic acids (fatty acids) in a triple condensation reaction. Carbohydrates on the other hand are made of carbon ring structures that either remain alone or polymerize into long polysaccharide chains.

8 0
3 years ago
In many cells, the adhesion to the extracellular matrix through integrins causes the activation of kinases in the cytoplasm. Thi
Pachacha [2.7K]

Answer: There is presence of tumor.

Explanation: The adhesion of cells to extracellular matrix (EMC) through integrins ( cell-EMC binding molecules, which are collagens, laminins and fibronectin) causes the activation of kinases in the cytoplasm.

However, kinanes helps in controlling the epithelial cell differentiation and upholding the epithelial tissues. This is done by the addition of phosphate groups to a substrate protein which is termed Protein phosporylation. Then, the kinases direct the affairs of the cell and it's activities. For example, it determines the cell division, anabolic and catabolic activities of the cell, movement of ions between the cell and it's environment (signal transduction), protein functions and etc.

Conclusively, since the activities of the cell like cell division and protein functions is dictated by the kinase, reduction in cell division that gave rise to rapid growth is put on hold. Hence, the tumor is been suppressed.

Note: the binding of cell-EMC is regulated by Transforming Growth Factor (TGF) β.

4 0
3 years ago
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