24 Questions
Where are peroxisomes mostly seen?
In the liver and kidneys
What is the function of lysosomes in a cell?
Digest foreign substances and dead cells
What is the function of rough endoplasmic reticulum?
Synthesize proteins
Which organelle is known as the 'powerhouse' of the cell?
Mitochondria
What is the main function of nuclear pores in a cell?
Regulate passage of substances in and out of the nucleus
Which cytoskeletal component is responsible for cell movement?
Microfilaments
What is considered the basic living unit of all organisms?
Cells
Which organelle is known as the command/control center of the cell?
Nucleus
Which molecules act as receptor molecules in the cell membrane?
Proteins
What is the function of cholesterol in the cell membrane?
Controls fluidity
What is the function of nuclear pore in a cell?
Controls movement of nucleus and cytoplasm
Where does rRNA synthesis occur in a cell?
Nucleolus
In hypertonic solutions, cells tend to:
Shrink
Which type of transport requires energy or ATP?
Active Transport
What is the primary difference between Primary and Secondary active transport?
Primary Transport uses ATP directly, Secondary Transport does not use ATP
What type of transport involves the movement of large particles across membranes?
Endocytosis
Which type of endocytosis occurs when specific substances bind to proteins before being transported into the cell?
Receptor endocytosis
What is the term for the process where substances are ejected out of the cell?
Exocytosis
What is the main function of microvilli in the intestines?
To increase surface area for absorption
Which statement best describes passive transport?
Occurs without the need for energy, moving substances from high to low concentration
What term is used to describe the movement of water from an area of high concentration to low concentration?
Osmosis
What is the role of aquaporins in cell transport?
Facilitating the diffusion of water molecules
What types of substances does interstitial fluid outside the cells typically contain?
Amino acids, sugars, fatty acids, vitamins, hormones, salts, and waste
What is the key characteristic of selective permeability in cell membranes?
Only permits specific substances to enter or exit the cell
Test your knowledge on microvilli and cell membrane transport mechanisms including factors involved in transportation. Learn about interstitial fluid components and their importance outside the cells.
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