Answer:
Clues that can be used to determine whether the movement of solutes through the membrane is passive or active could be the molecule size, membrane potential, and the presence/absence of membrane protein.
Explanation:
Solutes transport through the cellular membrane depends on the solute size, membrane potential, and the presence/absence of integral membrane protein.
There are two types of transport: Active and passive.
- Passive transport: It does <u>not need energy</u>; it is driven by a chemical potential gradient. <u>Small molecules</u> with no charge are transported through the membrane in a gradient favor, from a high concentration region to a low concentration region. There are two types of passive transport: <em>By simple diffusion</em> (small molecules pass through the membrane by themselves) and by <em>facilitated diffusion</em> (molecules are helped by integral membrane proteins to pass through the membrane). In facilitated diffusion, the helping protein can be a <u>channel protein</u> (hydrophilic pores that allow the molecule to pass with no interaction) or a <u>carrier protein</u> (proteins with mobile parts that suffer modification as the molecule pass to the other side).
- Active transport: It <u>does need ATP energy</u> to pass the molecule through the membrane, as they have to <u>move against the electrochemical gradient</u>. This kind of transport is always mediated by a <u>carrier protein</u>. These proteins join with the molecules and suffer changes as they pass the solute to the other side of the membrane. An important example of this kind of transport is the sodium-potassium bomb.
Rough and smooth ER is the two kinds
Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension.
Explanation:
Only about 3 percent of the worlds water is fresh, and even less than that is usable, because most of it is locked up in glaciers or in permanent snow fields.
The correct answer is D.
<u>Answer:</u>
"G-Factor" is associated with a theory of intelligence proposing a singular underlying aptitude or intellectual competence of intelligence.
<u>Explanation:</u>
An English psychologist Charles Edward Spearman was highlighted for his work in statistics as a pioneer of factor analysis. He speculated that humans had "G-Factor" i.e general intelligence (established in 1904 by Charles Spearman) from very early in the measurement of intelligence in history.
G-factor is a singular underlying aptitude or intellectual ability in many fields which include verbal, reasoning and spatial abilities. The general intelligence tests the level of expertise in applying logic to solve work-related problems by measuring the basic cognitive abilities regarding specific skills like memorization, arithmetic and common global knowledge.
