My favorite, lysosomes. These break down old cells parts and remove waste. They do this by releasing enzymes that can break down food particles, old cell parts and engulfed bacteria and viruses. Did you know that if the cell knows its health is poor the lysosome will kill the it's own cell.
Answer:
Left ventricle.
Explanation:
Blood pressure is a type of hydrostatic pressure, the pressure exerted by the fluid on the walls of container it contains. So in the case of heart it would be the pressure exerted by the blood on walls of heart chamber and in vessels in it would be the pressure exerted on the walls of vessels.
Remember, blood flow from higher pressure to lower pressure. So for moving blood from heart to blood vessels the heart should have greater pressure than blood arteries. This higher blood pressure in heart experienced by left ventricle as it supplies the blood to body.
Left ventricle hypertrophy is a condition in which wall of left ventricle are thickened and enlarged because of higher blood pressure in arteries. This is because left ventricle have to work harder if the arteries have greater blood pressure.
Answer: A. A scientific paper is a reliable source of information.
Explanation:
A peer review is a kind of analysis of the research outcome by the people who generally exhibit the same competency as that of the author or researcher and knowledge for a particular subject or topic in which the research has been conducted. Such a process makes the research outcome more authentic and reliable. The author learns to improvise the research process and corrects the mistakes after the peer review.
Answer:
A. They contain large amounts of gas and dust.
Explanation:
Having a lot of gas and dust means that these galaxies have a lot of star formation going on within them. This can make them very bright.
Answer:
b. All are enzymes
Explanation:
"Every enzyme is a protein, but not every protein is an enzyme." You may have heard that phrase already.
With the exception of one group of RNA molecules with enzymatic activity, every enzyme is a protein.
Proteins, in addition to enzymes, can perform many other functions in the cell, such as structural and transport functions. Protein is a type of substance formed from a set of linked amino acids (called peptide bonds). In other words, proteins are composed of carbon, hydrogen, oxygen and nitrogen molecules.
