Answer;
B. to reduce chances of falls
Explanation;
-Senior citizens should perform balance exercises to reduce chances of falls. Balancing in senior citizens or older people is important as it helps build huge confidence, it helps them to see the world in their own terms and also better balance means there will be fewer falls.
Answer:
B
Explanation:cause I said so
B. decrease the production of aldosterone
C. decrease arterial blood pressure
D. decrease water absorption
Answer: A. constrict arterioles and increase blood pressure
Explanation:
Angiotensin II, is a hormone that binds to many receptors in the body to affect several systems. It can cause constricting of the blood vessels, increases thirst, stimulates the secretion of the hormone that is involved in the fluid retention in the body.
The angiotensin may cause vasoconstriction directly and indirectly. When the angiotension II levels are increased in the blood due to the activation of the renin-angiotension-aldosterone system, many arteries experiences the vasoconstriction so as to maintain the blood pressure. This process reduces the flow of blood to the kidneys.
Angiotensin II primarily functions to constrict arterioles and increase blood pressure, making option A the correct answer. It does this by constricting blood vessels, thereby increasing peripheral resistance and blood pressure.
The function of angiotensin II is predominantly to A. constrict arterioles and increase blood pressure. Angiotensin II, a powerful vasoconstrictor, plays a crucial role in maintaining blood pressure by constricting the arterioles to increase peripheral resistance, thereby increasing blood pressure. It is a part of the renin-angiotensin-aldosterone system, which helps regulate the body's blood pressure and fluid balance. So, decreased production of aldosterone, decreased arterial blood pressure, or decreased water absorption are not primary functions of angiotensin II. Its primary function concerns blood pressure regulation.
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Diagram A will illustrates the first stage of mitosis is: Prophase. Prophase is the first stage of mitosis, and it is a crucial step in cell division where several significant events occur.
Prophase in Mitosis:
Prophase is marked by several key events:
Chromatin Condensation: At the beginning of prophase, the genetic material within the cell's nucleus, known as chromatin (a complex of DNA and proteins), starts to condense. The long, thin strands of chromatin become more tightly coiled and compacted, forming visible structures called chromosomes. Each chromosome will consists of two sister chromatids connected by the centromere.
Nuclear Envelope Breakdown: In many eukaryotic cells, including animal cells, the nuclear envelope, which surrounds the nucleus, begins to break down during prophase. This will allows the spindle fibers to access the chromosomes.
Spindle Fiber Formation: Structures called spindle fibers (microtubules) start to assemble within the cell. These fibers extend from the centrosomes, which are specialized regions of the cell that organize the spindle apparatus. The spindle fibers will play a critical role in moving the chromosomes during later stages of mitosis.
Centrosome Movement: In animal cells, the centrosomes (containing the centrioles) move to opposite poles of the cell. The centrosomes serve as organizing centers for the spindle fibers and help guide the movement of chromosomes.
Animal Cell: Animal cells lack a cell wall, chloroplasts, and a large central vacuole. If Diagram A does not show these features and has centrosomes or centrioles, it is more likely an animal cell.
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burning wood
hot stove
gas pump
A water fall can be used as a source of renewable energy.
It is obtained from sources that can be replenished. They can not be depleted with use.
Renewable energy includes solar energy, geothermal energy, wind energy, etc.
It can be used to generate hydroelectricity.
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Answer:
solar energy, wind energy, hydropower, geothermal energy, and biomass energy. These types of energy sources are different from fossil fuels, such as coal, oil, and natural gas.
B) Golgi body
C) mitochondrion
D) membrane-bound nucleus
Answer:
A) cell wall
Explanation:
The cell wall does not help differentiate prokaryotic cells from eukaryotic cells, since both have the cell wall (formed by polysaccharides and amino acids).
The other structures help identify the eukaryotic cell due to the fact that only this type of cell has them, while prokaryotic cells lack organelles such as mitochondria and the golgi complex.
In addition, prokaryotes do not have membrane-bound nuclei, and due to their less complex structure, their genetic material is dispersed in the cytoplasm.
Answer:
the answer must be A.
Explanation:
i did on usatestprep!
3.urnine is finally expelled from the body through which of the following?
*Bladder
*Collecting duct
*Kidneys
*Urethra
4.What does the hemoglobin in red blood cells do?
*It binds carbon dioxide
*it binds oxygen
*it releases antibodies
*it releases carbon dioxide
5.what chamber of the heart pumps blood into the pulmonary artery, which leads to the lungs?
*The left atrium
*the left ventricle
*the right atrium
*the right ventricle
6.In which part of the circulatory system is blood brought directly to the tissues?
7.when a cell first takes in a virus, what organelles tries to destroy it?
8.what type of cells engulfs an invading pathogen and displays its antigens?
9.what is keratin?
10. what is the principle component of the thickest layer of the skin?
11.what is the tough protein that is one of the primary components of bones?
12.how many bones are contained in the adult body?
13.which of 6the following bones protects the spinal cord?
14. which of the following types of muscles are voluntary?
15.what is the role of the proteins actin and myosin?
16.where is insulin produced?
17.which of the following receptors respond best to dim light?
18.what is the hormone that causes secondary characteristics in males?
19. what are eggs produced in the female body?