#1
Which type of cellular transport requires energy?
Simple diffusion
Facilitated diffusion
Active transport
Osmosis
#2
Which type of transport allows the movement of substances down their concentration gradient without the use of energy?
Active transport
Facilitated diffusion
Osmosis
Passive diffusion
#3
What is the main function of aquaporins in cell membranes?
Facilitate the movement of ions
Facilitate the movement of water
Regulate the fluidity of the membrane
Synthesize ATP
#4
In which cellular structure does the electron transport chain take place?
Mitochondria
Nucleus
Endoplasmic reticulum
Golgi apparatus
#5
What is the primary function of the phospholipid bilayer in the cell membrane?
Facilitate active transport
Provide energy for cellular activities
Regulate the passage of substances
Synthesize proteins
#6
What is the primary function of the cell membrane?
Energy production
Protection of the cell
Cellular communication
Regulation of substances entering and leaving the cell
#7
Which molecule is a major component of the cell membrane?
DNA
Protein
Phospholipid
RNA
#8
What is the role of cholesterol in the cell membrane?
Facilitates diffusion
Enhances flexibility
Provides rigidity
Regulates fluidity
#9
Which organelle is responsible for packaging and transporting cellular materials within the cell?
Endoplasmic reticulum
Golgi apparatus
Mitochondria
Lysosome
#10
Which of the following is a characteristic of active transport?
Movement of substances down their concentration gradient
Requires energy input
Facilitated by transport proteins
Occurs without the use of carrier proteins
#11
In which direction does water move during osmosis?
From an area of lower concentration to higher concentration
From an area of higher concentration to lower concentration
Both directions with equal rates
Water movement is not affected by concentration
#12
What is the role of transport proteins in the cell membrane?
To provide structural support
To facilitate communication between cells
To transport substances across the membrane
To synthesize ATP
#13
What is the primary difference between simple diffusion and facilitated diffusion?
Facilitated diffusion requires energy, while simple diffusion does not.
Simple diffusion involves the movement of substances through a protein channel.
Facilitated diffusion requires a concentration gradient, while simple diffusion does not.
Simple diffusion involves the movement of substances without the aid of transport proteins.
#14
Which type of endocytosis involves the uptake of small, dissolved solutes and fluids?
Phagocytosis
Pinocytosis
Receptor-mediated endocytosis
Exocytosis
#15
Which type of transport involves the engulfment of large particles or cells by the cell membrane?
Exocytosis
Endocytosis
Facilitated diffusion
Active transport