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What are the two main outcomes of cell differentiation?
What is the function of the nucleus in a cell?
Stores the genetic material, coordinates cell activities, and is the molecular machinery of the cell.
The nucleus is responsible for coordinating all __________ activities.
cell's
Eukaryotic cells are unicellular in nature.
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Study Notes
Cytology 1
- There are two main types of cells: prokaryotic cells and eukaryotic cells (human cells).
- Prokaryotic cells are unicellular, have no nucleus, and no organelles.
- Eukaryotic cells are multicellular, form tissues, have a nucleus, and have organelles.
- Eukaryotic cells undergo differentiation, which involves the interaction between genes and microenvironment, leading to two main outcomes: different appearance and structure, and functional specialization.
Nucleus
- The nucleus is the command center of the cell.
- It stores the genetic material, coordinates all cell activities (growth, metabolism, protein synthesis, cell division), and has molecular machinery.
- The nucleus has four components: nuclear envelope, nuclear pores, nucleoplasm, and chromatin.
- The nuclear envelope has two membranes (inner and outer) and a perinuclear space.
- Nuclear pores regulate the movement of ions and small molecules between the nucleoplasm and cytoplasm.
- Nucleoplasm, also known as karyoplasm, is a viscous fluid.
- Chromatin is made up of DNA, with 46 chromosomes in human cells (22 pairs of autosomes in somatic cells, and 22 autosomes in gametes).
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Description
This quiz is for BMS 550 students, covering Histology topics for Exam One in Summer 2022. It includes questions from Slidesmania.com.