17 Questions
What is the key difference between facilitated diffusion and simple diffusion?
Presence of carrier proteins in facilitated diffusion
In passive transport, which of the following statements is true?
Transport rate is usually slow
What characteristic distinguishes active transport from passive transport?
Requires energy input
Which of the following is a feature of secondary active transport?
Indirect energy usage
How does the saturation of a transporter differ from that of a channel?
Transporter shows very high saturation
Which type of transport is characterized by the movement of molecules across a membrane down a concentration gradient, without the requirement of energy?
Simple diffusion
What is the main difference between facilitated diffusion and simple diffusion?
Simple diffusion does not require specific membrane proteins
Which form of transport is considered a passive process due to the lack of energy expenditure?
Facilitated diffusion
In which type of transport do molecules move across a membrane with the help of specific carrier proteins but do not proceed against a concentration gradient?
Facilitated diffusion
What distinguishes active transport from passive transport mechanisms?
Active transport moves molecules against their concentration gradient
Which method of transport involves the cell engulfing particles or fluids from its surroundings?
Endocytosis
Which type of transport move substances from an area of higher concentration to an area of lower concentration without requiring chemical energy like ATP or GTP?
Facilitated diffusion
Which type of transport relies on transport proteins for moving substances across the membrane?
Facilitated diffusion
What is a characteristic of simple diffusion in comparison to facilitated diffusion?
Rate is generally slower
Which type of transport has a rate that may be affected by factors like temperature and types of membrane proteins involved?
Facilitated diffusion
In which type of transport do substances move from an area of higher concentration to an area of lower concentration?
Simple diffusion
Which mechanism of transport directly requires the input of chemical energy like ATP or GTP?
Active transport
Test your knowledge on the models of active transport by carrier proteins, focusing on primary and secondary active transport. Learn about the differences between channel and transporter proteins in terms of transport rate and saturation.
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