1.
Which of the following form the main components of our body cells? (1 point)
carbohydrates and proteins
fat and phosphorous
proteins and iron
nucleic acids and calcium
2.
Organic compounds always contain______. (1 point)
water
oxygen
nitrogen
carbon
3.
Which of these is a compound? (1 point)
Ca
Mg
Na
H20
4.
Water is such a vital part of an organism’s existence because (1 point)
all the chemical reactions take place in water.
water is used to transport materials.
water acts as an insulator.
all of the above
5.
_______ is an inorganic molecule found in bones. (1 point)
Salt
Calcium
Nucleic acid
Lipids
1.carbohydrates and proteins
2. carbon
3. H20
4. all of the above
5. Calcium
ur answers r right
1. Carbohydrates and proteins
2. Carbon
3. H20
4. All of the above
5. Calcium
thanks shane
You got every one right!!!
1. To find the answer to this question, we need to understand the main components of our body cells. The main components are the molecules that make up the basic structure and function of the cells. One way to determine this is to recall the different types of molecules that are commonly found in cells.
a) Carbohydrates: These are organic compounds made up of carbon, hydrogen, and oxygen. They are important sources of energy for cells.
b) Proteins: These are large molecules made up of amino acids. They have diverse functions in cells, including structural support and enzymatic reactions.
c) Fat: While fat is present in our body cells, it does not form a main component of the cells. It mainly serves as a storage form of energy.
d) Phosphorous: Phosphorus is an essential mineral in the body, but it is not a main component of cells.
e) Iron: Iron is also an essential mineral, but it is not a main component of cells.
f) Nucleic acids: These are macromolecules that include DNA and RNA, which carry genetic information and are involved in cellular processes.
g) Calcium: Calcium is an important mineral for various physiological functions, but it is not a main component of cells.
From this information, we can see that the correct answer is carbohydrates and proteins, as they are the main components of our body cells.
2. Organic compounds always contain carbon. Organic chemistry is the study of carbon-containing compounds, and carbon is an essential element in organic compounds. Therefore, the correct answer is carbon.
3. To identify a compound, we need to understand what a compound is. A compound is a substance composed of two or more different elements chemically bonded together. The formula Ca represents the element calcium, Mg represents the element magnesium, and Na represents the element sodium. H2O is the chemical formula for water. From this, we can determine that H2O is a compound consisting of hydrogen and oxygen, making it the correct answer.
4. To discover the importance of water to an organism's existence, we need to examine the functions of water in biological systems.
a) Water is used as a solvent: Many biological reactions and processes occur in aqueous solutions, where water acts as a solvent, allowing substances to dissolve and interact.
b) Water is involved in chemical reactions: Many chemical reactions in biological systems require water as a reactant or product, and water molecules can participate in these reactions.
c) Water is a transport medium: Water facilitates the movement of nutrients, wastes, and other molecules within organisms, allowing for efficient transport and distribution.
d) Water acts as a temperature regulator: Water has a high specific heat capacity, meaning it can absorb and release heat energy without significant temperature changes. This property helps organisms maintain stable internal body temperatures.
Considering these functions, the correct answer is "all of the above," as water is essential for all these reasons.
5. Inorganic molecules are compounds that do not contain carbon or are not primarily composed of carbon. Among the options provided, salt, nucleic acid, and lipids, only calcium (Ca) is a mineral that is an inorganic molecule commonly found in bones. Therefore, the correct answer is calcium.