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Cell Membrane and Cytoplasm Biochemistry

18 Questions

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Cell Membrane and Cytoplasm Biochemistry

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Questions and Answers

What are some examples of cytoplasmic inclusions mentioned in the text?

Mitochondria and ribosomes

Lipid droplets, glycogen, and melanin pigment (correct)

Chloroplasts and vacuoles

Nucleus and endoplasmic reticulum

What is the function of actin filaments in the cytoskeleton of a cell?

Securing organelles in specific positions

Directing DNA synthesis

Synthesizing ribosomes

Allowing cell movement (correct)

Which component of a eukaryotic cell is described as the most prominent membrane-bound organelle?

Ribosomes

Mitochondria

Nucleus (correct)

Endoplasmic reticulum

What is one of the functions of cytoplasmic inclusions?

Maintain cell shape Signup and view all the answers

What are the three types of cytoskeletal fibers mentioned in the text?

Actin filaments, intermediate filaments, microtubules Signup and view all the answers

Which organelle houses the cell's DNA in the form of chromatin?

Nucleus Signup and view all the answers

What is the function of the nuclear pores in a eukaryotic cell?

To control the exchange of large molecules between the nucleoplasm and cytoplasm Signup and view all the answers

Where is heterochromatin typically located inside the nucleus of a eukaryotic cell?

Adjacent to the nuclear membrane Signup and view all the answers

What is the main function of euchromatin in a eukaryotic cell?

To regulate gene expression through transcription Signup and view all the answers

How are chromosomes classified based on their functions inside a eukaryotic cell?

As heterochromatin and euchromatin Signup and view all the answers

Which structure in a eukaryotic cell is continuous with the endoplasmic reticulum?

Nuclear membrane Signup and view all the answers

What is the matrix present inside the nucleus of a eukaryotic cell called?

Karyoplasms Signup and view all the answers

What is the primary component of a cell membrane based on its composition?

Lipids Signup and view all the answers

Which organelle is a major site for adenosine-triphosphate (ATP) production through aerobic respiration?

Mitochondria Signup and view all the answers

What is the function of the smooth ER within a cell?

Lipid and steroid synthesis Signup and view all the answers

Which cell component carries its own genetic material (DNA)?

Mitochondrion Signup and view all the answers

What makes the plasma membrane semi-permeable, regulating the passage of substances?

Lipid bilayer Signup and view all the answers

Which component of a cell is made up of lipids and proteins, and helps in regulating the passage of substances?

Cell membrane Signup and view all the answers