Mutations. Definition. A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed.
<span>The correct answer is b. Option a is incorrect because these models can demonstrate scientific theories, but they don't prove scientific theories (you would need experiments for that). Option c is incorrect because the models aren't always representing something abstract (i.e. DNA is very real, just very small). Option d is incorrect because they don't precisely mimic something in nature, but instead help us visualize something in nature that is difficult to see or comprehend.</span>
Answer: Alexandrium catenella is a species of dinoflagellates. Alexandrium has two flagella that enable it to swim. While one flagellum encircles the cell causing the cell to rotate and move forward, the other extends behind the cell and controls the direction.
The cell wall is composed of cellulose Theca.
Length 20 - 48 μm, width 18 - 34 μm
Yellow-green to orange-brown
Forms chains of 2, 4 or 8 cells
Answer:
Some producers of the savanna are:
Jackal berry trees.
Acacia trees.
Jarrah trees.
Bermuda grasse.
River bushwillow.
Kangaroo paws.
Star grass.
Lemongrass.
Insulation and long-term energy storage
The function of FATS is insulation and long-term energy storage. Excess glucose in the body is converted to fats and then stored in certain location like liver, around the heart, and under the skin. The fats are converted back to glucose during starvation. Fats are deposited under the skin to provide insulation against heat loss.
Explanation:
Proteins are the mains structural molecules in the body. They are coded for by the DNA in cells that instruct how these proteins should be manufactured. Proteins make up the muscle tissues, most enzymes, antibodies, hormones, hair, nails, and etcetera. Protein is broken down for energy as a last resort during total starvation (when fat deposits have been exhausted) and when this happens it leads to body wastage. Glucose is the main energy source of cells.
Learn More:
For more on proteins check out;
brainly.com/question/1071184
brainly.com/question/13225929
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