Answer:
Those floating ribosomes make proteins that will be used inside of the cell. Other ribosomes are found on the endoplasmic reticulum. Endoplasmic reticulum with attached ribosomes is called rough ER. ... The attached ribosomes make proteins that will be used inside the cell and proteins made for export out of the cell.
Explanation:
2. Cell, Stem Cell, Tissue, Organs, Organ System, Organism
3. Cardiac Muscle Cell, Stem Cell, Cardiac Muscle Tissue, Circulatory System, Heart
4. Bone Cell, Stem Cell, Connective Tissue, Skeletal System, Bone
Notice how there's a certain noticeable pattern to the complexity of the systems and organs.
Atomic number is the number of protons of an atom. And, given that the atoms are electrically neutral and the charge of one proton is equal to the charge of one electron, the number of electrons is equal to the number of protons. So the neutral atom of sodium has 11 protons and 11 electrons. But, the sodium ion (Na+) has one positive charge, that means that it has lost one negative charge or one electron. Then, the sodium ion (Na+) has 11 - 1 = 10 electrons. <span>Then, the answer is that there are 10 electrons in a sodium ion.
hope this helps :3</span>
Description
Newton's law of universal gravitation is usually stated that every particle attracts every other particle in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
<h2>Answer:</h2>
Because cell structure is not uniform from every side and in every section.
<h3>Explanation:</h3>
A cell is a unit of life and it contains all the structure which are important for the functions of a life.
Cell contains nucleus for genetic material storage and replication. It contains mitochondria for respiration and ribosomes for protein production. Apart from these structures it contains golgi apparatus, endoplasmic reticulum, lysosomes and cell membrane. Except cell membrane their structures are not uniformally distributed.
That's why biologists often cut several sections from a cell to find out about its structure.