Question

9. Which of these organelles contains an inner membrane folded inward to form cristae? a. nucleus b. chloroplast c. rough ER d. mitochondrion e. smooth ER 10. Which reaction requires an enzyme? a. ATP -ADP Pi ADP +Pi >ATP C. Sucrose->glucose+fructose d. glyceraldehyde 3-phosphate (G3P)> 1,3-diphosphoglyceric acid e. all of these 11. What would happen to human red blood cells placed in a solution of sucrose that is hypertonic to their cytoplasm? a. b. C. d. e. They would take up the sucrose and digest it into two amino acids They would shrink. They would swell, but not burst. They would burst. They would take up and store the sucrose as starch. 12. When transport proteins (such as glucose transporters) are used to get a substance across a membrane, but no ATP or energy is used (directly or indirectly to provide a gradient), the process is referred to as. a. co transport b. osmosis c. facilitated diffusion d. phagocytosis e. receptor mediated endocytosis

Answer 1

9.D.mitochondrion

Mitochondrion has inner membrane folded inwards to form cristae

cristae increase surface area of inner membrane, thus there is faster production of ATP because there are more places to perform the process

10. E.All of these

Explanation: Enzymes used in each option is mentioned below

A. ATP hydrolase

B. ATP synthase

C. Sucrase

D.  Glyceraldehyde 3-phosphate dehydrogenase

11. B. they would shrink

As the solution outside is hypertonic thus has more fluid as compared to inside RBC. Thus fluid moves inside RBC

Sucrose cannot be transported as RBC membrane does not have sucrose receptors

12. C facilitated diffusion

Co transport is transport of two molecules across membrane in same or opposite direction

Osmosis is passive flow of solvent from high concentration to low concentration

Phagocytosis is process by which cell engulfs substance...

Endocytosis a process by which cells absorb proteins, hormones,metabolites– and in some cases also viruses – by inward budding of the plasma membrane.