Question

here would you expect to find a bedrophhobic amino acld like valine? hor of the folded protein, away from water on the exterior surface of the protein, interacting with water C) in the interior of the folded protein, away from water, or in a tranomembrane portion interacting with lipid fatty acid chains D) in the transmembrane portion interacting with lipid fatty acid chains- 20) Which of the following are found in plant, animal, and bacterial cells? A) chloroplasts C) ribosomes B) endoplasmic reticulum D) mitochondria 21) Of the following functions, which is most important for the glycoproteins of animal cell membeanes? A) maintaining membrane fluidity at low temperatures B) a cell's ability to distinguish one type of neighboring cell from another C) active transport of molecules against their concentration gradients 22) Which of these processes can move a solute against its concentration gradient? A) passive transport C) facilitated diffusion B) active transport D) osmosis 23) Which of the following types of reactions would decrease the entropy within a cell? A) abolic reactions B) hydrolysis ) digestion D) catabolic reactions 24) Which of the following would increase the electrochemical potential across a membrane? B) both a proton pump and a potassium channel D) a potassium channel A) a proton pump C) a chloride channel 25) The presence of cholesterol in the plasma membranes of some animals A) makes the animal more susceptible to circulatory disorders. B) enables the membrane to stay fluid more easily when cell temperature drops. C) enables the animal to add hydrogen atoms to unsaturated phospholipids D) makes the membrane less flexible, allowing it to sustain greater pressure from within the cell. 26) What is the chemical reaction mechanism by which cells make polymers from monomers? 9 phosphodiester linkages B) dehydration reactions A) hydrolysis 27) Which of the following is a major cause of the size limits for certain types of cells? A) the difference in plasma membranes between prokaryotes and eukary B) the need for a surface area of sufficient area to support the cell's metabolic needs C) evolutionary progression in cell size; more primitive cells have smaller sizes D) limitation on the strength and integrity of the plasma membrane as cell size increases 28) What is the change in free energy of a system at chemical equilibrium? A) slightly increasing C) no net change B) greatly decreasing D) slightly decreasing 29) Which of the following processes includes all of the others? A) facilitated diffusion B) osmosis 9 passive transport D) transport of an ion down its electrochemical gradient

Answer 1

Please look in the image for solution:

hor of the folded protein, away from water here would you expect to find a bedrophhobic amino acld like valine? on the exterior surface of the protein, interacting with water C) in the interior of the folded protein, away from water, or in a tranomembrane portion interacting with lipid fatty acid chains D) in the transmembrane portion interacting with lipid fatty acid chains 20) Which of the following are fournd in plant, animal, and bacterial cells? A) chloroplasts C) ribosomes B) endoplasmic reticulum D) mitochondria 21) Of the following functions, which is most important for the glycoproteins of animal cell membranes? A) maintaining membrane fluidity at low temperatures B) a cell's ability to distinguish one type of neighboring cell from another C) active transport of molecules against their concentration gradients 22) Which of these processes can move a solute against its conceptration.gradient- A) passive transport C) facilitated diffusion B) active transport D) osmosis 23) Which of the-followirg types of reactions would decrease the entropy within a cell? A) anabolic reactions B) hydrolysis ) digestion D) catabolic reactions 24) Which of the following would increase the electrochemical potential across a membrane? A) a proton pump C) a chloride channel B) both a proton pump and.a.potassium.chainel D) a potassium channel 25) The presence of cholesterol in the plasma membranes of some animals A) makes the animal more susceptible to circulatory disorders. B) enables the membrane to stay fluid more easily when cell temperature drops. C) enables the animal to add hydrogen atoms to unsaturated phospholipids D) makes the membrane less flexible, allowing it to sustain greater pressure from within the cell. 26) What is the chemical reaction mechanism by which cells make polymers from monomers? 9 phosphodiester linkages B) dehydration reactions A) hydrolysis 27) Which of the following is a major cause of the size limits for certain types of cells? A) the difference in plasma membranes between prokaryotes and eukaryot B) the need for a surface area of sufficient area to support the cell's metabolic needs C) evolutionary progression in cell size; more primitive cells have smaller sizes D) limitation on the strength and integrity of the plasma membrane as cell size increases 28) What is the change in free energy of a system at chemical equilibrium? A) slightly increasing C) no net change B) greatly decreasing D) slightly decreasing 29) Which of the following processes includes all of the others? A) facilitated diffusion B) osmosis C) passive transport D) transport of an ion down its electrochemical gradient

20)

Plant, animal and bacteria are found in ribosome. Because ribosome is the organelle found in prokaryotes as week as in eukaryote.

Ribosome (C) is the right option.

21)

Glycoprotein is found in the plasma membrane. This molecule helps in recognition of different cells and helps in attaching one cell to another.

B is the right option.

22)

Active transport is the movement of molecule from lower concentration to higher concentration by means of utilising the energy from break down of ATP.

B is the right option.