D) All cells are surrounded by a thin membrane
Answer:
75 percent of hydrogen, and 25 percent of helium.
Explanation:
The Sun is mostly composed of helium (He) and hydrogen (H). It is a big ball of gases that are converting into solar energy in the core of the Sun.
The Sun is the biggest star, composed of hot gases and it is located in the center of the solar system.
The temperature of the Sun is 5.726 degrees of Celsius. The percentage of hydrogen in the un is 75 percent, and helium 25 percent.
That process is known as "Ovulation"
Hope this helps!
Answer:
Because stains are made of different types of molecules, a range of enzymes are needed to break them down. Proteases break down proteins, so are good for blood, egg, gravy, and other protein stains. Amylases break down starches, and lipases break down fats and grease. Washing powders usually only contain one type of enzyme, though some have two or all three.
Explanation:
Answer:
30 minutes
Explanation:
Bacteria reproduce by binary fission, a process by which one parent cell divides to form 2 progeny cells. Because one cell produces 2 progeny cells, bacteria are said to undergo exponential ( logarithmic) growth.
As in the case of staphylococcus aureus, we start with 100 cells , and after 90 minutes number becomes 800 that means , firstly the cells doubled (100 x 2 = 200 ) after 30 minutes. Again after 30 minutes they doubled ( 200 x 2 =400 ) and again after 30 minutes they doubled (400 x 2 = 800). So in 90 minutes 100 cells became 800 cells.
Hence the generation time for S.aureus is 30 minutes.
