The statement "The DNA strand is used as a template for which a complementary RNA strand can be produced" accurately describes a step within transcription (option C)
Transcription is the process of copying genetic information from DNA into RNA. The DNA strand is used as a template, and the RNA polymerase enzyme reads the DNA strand and adds complementary nucleotides to form a new RNA strand.
The RNA strand is then released from the DNA and can be used to make proteins.
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B. fats.
C. carbohydrates.
D. vitamins.
Carbohydrates, fats, and proteins serve as the primary energy sources for the body, with carbohydrates being the preferred source. Fats provide energy when carbohydrate stores are low, and proteins serve mainly for growth and tissue repair, but can also provide energy.
The nutrients which serve as the main sources of energy for the body are primarily proteins, fats, and carbohydrates. Each of these performs distinct roles in the body. Carbohydrates are generally the body's preferred source of energy, as they can be easily broken down into glucose, which can be readily used for energy. Fats are the most energy-dense nutrient, providing twice as much energy as carbohydrates or proteins per gram. They are often used as a secondary source of energy when carbohydrate stores are low. Proteins, on the other hand, are primarily used for growth and tissue repair, but can also provide energy in certain circumstances. Vitamins do not directly provide energy, but they play critical roles in energy metabolism.
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Answer:
cell membranes need to made from a more permeable material to allow things to pass in and out more easily. and cell walls are not.
Explanation:
The oldest layers are on the bottom, and the youngest layers are on the top.