Organelles
How thick is the wall of a capillary?
1 cell thick
The centrosome is composed of how many centrioles?
2
The cytoplasm of the cell is _________ water
80%
The energy generated by the mitochondria is carried to where it's required within the cell by molecules of ...
ATP
Which of the following is found inside the nucleus?
DNA, nucleoli
What is a network of capillaries called?
a capillary bed
A blood clot in the brain can cause which event?
a stroke
Which type of vessel needs to withstand high blood pressure?
artery
The main microtubule organizing center of the cell is
centrosome
The plasma membrane provides the outer boundary of the
cytoplasm
The network of interlinking filaments and tubules that providing a cell with shape and stability is referred to as the ...
cytoskeleton
The cytoplasm includes the organelles and the
cytosol
Carbon dioxide and oxygen move across the plasma membrane by the process of ...
diffusion
Which of these is NOT a function of blood?
digestion of nutrients
lysosomes contain
digestive enzymes
Which organelle is particularly important for the synthesis, folding, modification, and transport of proteins within the cell?
endoplasmic reticulum
What is the name for the process whereby the membrane of a vesicle fuses with the plasma membrane, allowing it's contents to be released from the cell?
exocytosis
How many chambers does the human heart have?
four
Where are the cell's chromosomes stored?
in the nucleus
Genetic information is carried out of the nucleus and to the sites of protein synthesis in the cytoplasm by...
mRNA
Ribosomes link amino acids together to form polypeptide chains according to instructions from ...
mRNA/DNA
Which organelle generates energy for the cell?
mitochondria
The site of ribosome synthesis and assembly within the cell is
nucleolus
DNA replication takes place in
nucleus
The cell membrane is made (mostly) from a double layer of
phospholipids
Which type of organelle is used within the cell to ingest extracellular fluid and and molecules?
pinocytotic vesicles
The outer layer of the cytoplasm is called the
plasma membrane
Which type of cell carries oxygen around the body?
red blood cells
Which of the following is involved in the production and folding of proteins?
ribosomes
Which organelle acts as an assembly line where proteins are synthesised from RNA?
ribosomes
Lysosomes are known to contain more than 60 different enzymes. Where are they synthesised?
rough endoplasmic reticulum
Which organelle has ribosomes attached to its surface?
rough endoplasmic reticulum
Which of the following is associated with the production and metabolism of fats and steroid hormones within the cell?
smooth endoplasmic reticulum
Processing and packaging macromolecules, such as proteins and lipids, is the primary function of which of the following organelles?
the Golgi apparatus
Which blood vessel provides oxygenated blood?
the aorta
Which vessels supply the heart with blood?
the coronary arteries
What does the pulse represent?
the heartbeat
Which organelle digests other, worn-out organelles, as well as food particles and engulfed viruses and bacteria?
the lysosomes
What separates the nucleus from the cytoplasm of the cell?
the nuclear membrane/envelope
What is the function of white blood cells?
to be part of the immune system
Why is blood clotting essential?
to prevent blood loss
What is the function of a valve in a vein?
to prevent reverse blood flow
Which of the following organelles could be described as 'a compartment filled with water containing inorganic and organic molecules'?
vaculole
Which type of vessel contains valves?
veins
After transporting and modifying proteins and lipids, the Golgi apparatus packages them into ...
vesicles
