Answer:
c
Explanation:
planets are round because of their gravitational field acts as though it pulls everything from the center of its body and pulls everything toward it
The connection between them is Vitamin D.
Vitamin D can be obtained from food and supplements, or synthesized by our bodies when we receive UV radiation in our skin, which is our major source. However, this vitamin comes <span>inactivated</span> and the only way to activate it is through enzymatic conversion (hydroxylation) in the liver and later in the kidneys.
This vitamin is necessary in the intestines because allows calcium and phosphorus to be observed, leading to normal growth and development of bones and teeth. Without enough vit D, bones become fragile, causing osteoporosis.
Answer:
Protein Synthesis
Explanation:
DNA transcribes information into the RNA of the nucleus. Transcription is making copies of information from DNA and applying that information into a new format. The RNA first stays in the nucleus and then travels to the ribosome on the rough endoplasmic reticulum through the cytoplasm. Here the translation of RNA done. The information the DNA which was copied onto the RNA during transcription is translated into a sequence of amino acids in this stage. In the next step, the amino acid chains, or polypeptides, are constructed in the correct sequence to form proteins.
After synthesis of protein, a part of the rough endoplasmic reticulum takes off and separates to form a protein-filled vesicle. Then this vesicle travel to the Golgi complex where the protein is modified if needed and then repackaged into a new vesicle. The vesicles then carry out the protein to another organelle where it will be used within the cell or to the plasma membrane for secretion purposes.
The correct answer is: D. all of the above
A macromolecule is a large molecule present in the cell, composed of a huge number of monomer units with the various functions. There are four main groups: proteins (monomers are amino acids), nucleic acids (monomers are nucleotids) , lipids (monomers are free fatty acids) and carbohydrates (monomers are simple sugars such as glucose).
Some of their functions:
• Provide structure on the cellular levels-lipids (phospholipids) are the main components of the cell membrane;
• store genetic material-nucleic acid (DNA, RNA) are the carriers of genetic information
• store energy-starch is energy source in plants;
• enzymes -proteins often are with the functionin metabolism
• etc.
