Question

all of the following are true regarding the krebs cycle except

a) it generates reduced coenzymes for the electron transport chain

b) it generates one ATP per Acetyl-CoA

c) It occurs in the matrix of the mitochondrion

d) It is responsible for directly breaking down glucose

e) it generates carbon dioxide, a waste gas

2) in the cell, ingested material are digested by the

a) lysosome

b) mitochondria

c) centriole

d) smooth endoplasmic reticulum

Answer 1

1. Krebs cycle is metabolic pathway which occurs in the matrix of the mitochondria to yiled energy.
kreb cycle yields many intermediate products that participate in electron transport chain. So statement (a) is true.
kreb cycle cause oxidation of acetyl CoA to yield ATP. So statement (b) is true.
kreb cycle occur in mitochondria matrix. So statement (c) is true.
kreb cycle doesnt directly breakdown glucose so statement (d) is incorrect.
kreb cycle produce CO2. So statement (e) is true.
Answer : (d)

2. Lysosome are the cell organelles that digest the ingested particle in a cell.
Mitochondria acts as power house of cell and helps in generation of ATP

smooth endoplasmic reticulum helps in lipid synthesis.
centrioles take part in cell division.

Answer : lyso