Answer:
As the thin filaments slide inward, structures called Z-discs come toward each other and the sarcomere shortens but the lengths of thick and thin filaments do not change. The sliding of the filaments and shortening of the sarcomere cause shortening of the whole muscle fiber and ultimately the entire muscle.
Answer:
A translation of an academic transcript should be a word-for-word rendering of the document from one language into another. A translation is distinct from a credential evaluation. An evaluation explains the meaning of the transcript.
Explanation:
Answer:
the failure of one or more pairs of homologous chromosomes or sister chromatids to separate normally during nuclear division, usually resulting in an abnormal distribution of chromosomes in the daughter nuclei.
Answer:
Energy is not a requirement for the occurrence of osmosis
Explanation:
Osmosis is a passive method of water movement driven by the concentration gradient between the cell's membrane and the extracellular fluid. In OSMOSIS, water moves from a region of low solute concentration/high solvent concentration to a region of high solute concentration/low solvent concentration via a semi-permeable membrane.
Water will naturally move across a living cell's membrane when the concentration of the solute in the cell differs from that of the extracellular solution. Osmosis is a special type of diffusion, hence, no energy is expended by the cell to perform this process. This is why it is called a PASSIVE transport.
Trying to determine whether a fossil is a human ancestor, we should always look for skeleton or bone that make us human today.
<h3>What is bone?</h3>
Bone is a connective tissue which is metabolically active and the main function of bone is to provide mechanical or structural support as well as perform movement, and protect important organs of the body.
The bone is made up of bone cells known as osteocytes and extracellular matrix. The total number of bone human body contain is 206 bones including bones of spine, legs, arms, ribs, and skull.
Bones are made up of calcium and carbonate and they have bone marrow in which blood cells are produced. By nature bones came in category of living and they are active tissue .
There are several types of bones such as flat bones, short bones, sesamoid bones, and long bones. The function of bone is to protect vital organs of the body.
Therefore, trying to determine whether a fossil is a human ancestor, we should always look for skeleton or bone that make us human today.
Learn more about bone here:
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