Answer:
1. False
2. Biuret's test
3. No test will be used
4. Proteins
5. Lugol's reagent
Explanation:
1. Benedict's test is used to detect carbohydrates. Specifically, it tests for the presence of simple carbohydrates, such as monosaccharides and disacchsrides. It is blue in the absence of sugar, green/yellow in the presence of a small amount of sugar, orange red in the presence of a moderate amount of sugars, and brick red when there are lots of sugars present.
2. Biuret's reagent is a chemical test that measures the presence of proteins by detecting the presence of a peptide bond. The test is used to measure the concentration of proteins in a sample. The intensity of the purple colour formed is directly proportional to the concentration of protein present.
3. Nucleic acids are not detected by any of the listed tests. Biuret reagent tests for the presence of proteins, Benedict's reagent detects the presence of carbohydrates. The beta carotene test measures the level of beta-carotene in the blood. diphenylamine can be used as a colorimetric test for the presence of DNA or RNA.
4. Enzymes are a class of proteins. They are biological catalysts, meaning they participate in, and speed up, chemical reactions in the cell, without us themselves becoming altered in the reaction. They are proteins, and thus formed from chains of amino acids.
5. Lugol's reagent, also called Lugol's iodine, is a strong iodine solution that detects the presence of starch (turning a dark blue/black colour). This means it will not detect the presence of glucose, as this is monosaccharide rather than a polysaccharide like starch
Phosphorus because it is an energy source and breaks down carbs proteins and. Fats
Plant cells also have features that animal cells do not have: a cell wall, a large central vacuole<span>, and plastids such as </span>chloroplasts<span>.</span>
Answer:
Behavior is inherited in many animals which helps them to survive.
Explanation:
When animals fight with one another and one wins. This means that one animal (the winner) behavior is used to intimidate other. Two deer fight each other in order to show dominance over each other and to impress the female deer. The winner deer will be the leader and also mate with the females of the group. This is a type of behavior which is inherited in animals through genetics is called instincts.
Answer:
b. diffusion and osmosis across semi-permeable membranes
Explanation:
ATP (adenosine triphosphate) is a high energy carrying molecule in the system of living organisms. It posseses the ability to store and release energy for use by organisms during biochemical activities. However, some processes do not require ATP to occur and are called PASSIVE TRANSPORT while those that require energy (ATP) are called ACTIVE TRANSPORT.
In the above options, the processes listed as follows require ATP to occur:
- The active transport of glucose from the small intestine to the blood
- The movement of the flagella of sperm for motility
- Exocytosis of waste substances across a semi-permeable membrane
However, the diffusion and osmosis across semi-permeable membranes, which is a passive transport does not require ATP.
