The membrane's lipid bilayer structure provides the first level of control. ... Passive transport is the movement of substances across the membrane without the expenditure of cellular energy. In contrast, active transport is the movement of substances across the membrane using energy from adenosine triphosphate (ATP).
Answer:
From previous experience in World History, The United States is not a big enough portion of the world nor does it have a big enough population to consume a worldwide rate of energy compared to other nations, so I think the correct answer is that they consume a smaller share of global energy.
Answer:
Bones. They are vertabrates, which means they have a backbone
Explanation:
Fish, reptiles, amphibians, birds and mammals all have bones
The primary role of hydrochloric acid is to sterilize the food you eat and to prevent harmful bacteria from entering the GI tract. HCL also triggers the release of enzymes such as pepsin which are essential for the digestion of protein.
Answer:
a
Explanation:
There are two major differences between mitosis and meiosis. First, meiosis involves not one, but Two cell divisions. Second, meiosis leads to the production of germ cells, which are cells that give rise to gametes. Germ cells are different from somatic cells in a critical way. Whereas somatic cells are diploid, meaning they have two copies of each chromosome, germ cells are haploid. The haploid nature of germ cells is vital to the process of sexual reproduction.
