WorksheetsBiology CB7 Quiz Ribosomes and Mitochondria
Total questions: 12
Worksheet time: 7mins
Ribosomes are small cellular structures that are the sites of ________________.
protein synthesis
DNA decoding
cellular respiration
photosynthesis
Which of these are true of ribosomes? (check all that apply)
Each ribosome has three parts, two large subunits and a small subunit.
Ribosomes can be found alone or in groups within the cytoplasm
Ribosomes can be found on the rough endoplasmic reticulum.
Ribosomes can be found on the nuclear envelope
Ribsomes play an important role in cellular respiration.
Ribozymes are RNA molecules that catalyze chemical reactions, such as translation.
true
false
_____________ is the process of ordering the amino acids in the assembly of a protein
Sublimation
Translation
Respiration
Assemblage
Ribosomes on the rough ER usually produce proteins that are destined for the cytoplasm.
true
false
Ribosomes are found in both eukaryotic and prokaryotic cells and are not surrounded by a membrane.
true
false
Mitochondria are called the "power plants" of the cell because they are the sites of ______________________.
protein synthesis
translation
cellular respiration
devolution
What is ATP?
The cell's energy source that is used for such things such as movement and cell division.
The primary place where organic chemical reactions occur within the cell.
The cell's genetic code used for both protein synthesis and translation.
none of these
Which organelle is this?
nucleus
ribosome
mitochondria
none of these
A mitochondrion has two phospholipid membranes.
true
false
Which of these are true of mitochondria? (check all that apply)
A smooth outer membrane separates the mitochondrion from the cytosol.
Each mitochondria has two parts, a large and a small subunit.
The inner membrane has many folds, called cristae.
Some mitochondria are attached to the endoplasmic reticulum (ER), and others are attached to the nuclear envelope.
The fluid-filled inside of the mitochondrion, called the matrix, is where most of the cell’s ATP is made
According to the endosymbiotic theory, mitochondria were once free-living prokaryotes that infected or were engulfed by ancient eukaryotic cells. This is why they have their own DNA.
true
false
