DNA replication, Process during which a double- stranded DNA molecule is copied to ... You can determine the sequence of a complementary strand if you are given the ... DNA replication is not the same as cell division.
Answer:
Describe what will happen when a red blood cell is placed in:
Hypotonic Solution ⇒ The red cell would burst due to the influx of water. The water would have moved out of the cell which cause it to shrink. Red blood cells don't have the cell wall and contractile vacuoles and as well as it would not be able to maintain their shape leading to their rupture.
Hypertonic solution ⇒ A cell loses its H2O molecules when it is placed in hypertonic solution. Hypertonic solution is the one which contain more concentration of solutes as compared to the concentration of solutes in cytoplasm of cell. Which means that a solution contains less water as compared to the water within the cell.
Isotonic solution ⇒ When a red blood cell is placed in an isotonic solution, there will be no movement of water. Both the concentration of solute and water are equal both intracellularly and extracellularly
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Because they become older
B. The hypothalamus secretes the gonadotropin releasing hormone (GnRH), which stimulates the pituitary gland to secrete luteinizing hormone (LH). This stimulates the testes to secrete testosterone.
Answer:
A.
Nutrients from fertilizers on the farm wash off into the lake and cause the green slimy algal bloom
Explanation:
This question describes a team of marine biologists, who observe an inland sea covered up with a green slime. Firstly, this green slime is the the visible form of the proliferated growth of algae, hence, causing what is referred to as ALGAL BLOOM.
Algal bloom is caused by EUTROPHICATION, which is the pollution of water bodies with nutrients from fertilizers e.g phosphate, nitrate etc which causes a rapid algae growth. The excessive nutrients causing this algal bloom appearing like a green slime comes from the fertilizers used by farmers practising large scale farming within that area.
When this fertilizer is applied on plants, it gets washed into the water body and its constituents e.g phosphorus, nitrogen etc. serves as source of nutrient for the growth of marine organisms (algae). Hence, they grow excessively and form a bloom that appears like a green slime on the lake.
Hence, the farming activities is releasing pollutants in form of chemical substances which serve as nutrients for the proliferated growth of algae.