Cell Structures.

Proteins are synthesised in:

• Lysosomes

• RER

• Nucleus

• Golgi

Which of the following are part of the plasma membrane?

• Lipids, proteins, and carbohydrates

• Lipids, portions and ribosomes

• Nucleic acids, proteins and lipids

• Nucleic acids, proteins and carbohydrates.

Which statement is NOT true about mitochondria?

• Mitochondria have a single membrane

• mitochondria contain their own DNA

• Mitochondria are thought to have originated from bacteria.

• Mitochondria generate chemical energy for the cell

Which of the following organelles is an irregular maze of interconnected spaces enclosed by a membrane that functions as the site where most cell membrane components, as well as materials destined for export from the cell, are made?

• Golgi

• Endoplasmic reticulum

• Lysosome

• Nucleus

Which of the following organelles is a small, irregularly shaped organelle in which intracellular digestion occurs?

• The Golgi apparatus

• Lysosome

• Mitochondria

• Peroxisome

The outer membrane of the nucleus is continuous with the membrane of which organelle?

• Mitochondria

• The endoplasmic reticulum

• Peroxisome

• The Golgi apparatus

Which organelle receives proteins and lipids from the endoplasmic reticulum, modifies them, and then dispatches them to other destinations in the cell?

• The Golgi apparatus

• Lysosome

• The nucleus

• Peroxisome

Which organelle contains enzymes used in a variety of oxidative reactions that destroy toxic molecules?

• Mitochondria

• The Endoplasmic reticulum

• Peroxisome

• Golgi apparatus

Proteins that lack a sorting signal remain as permanent residents of which part of the eukaryotic cells?

• The Golgi apparatus

• The endoplasmic reticulum

• The nucleus

• The cytosol

Which of the following statements is not true of mitochondrial proteins that are synthesized in the cytosol?

• The proteins are unfolded as they are transported into the mitochondria.

• The proteins cross both the inner and the outer mitochondria membranes that are imported.

• The proteins are transported across the mitochondrial membranes while being synthesized.

• Chaperone proteins help draw the proteins inside the mitochondrion