Nuclear pores - Study guides, Class notes & Summaries

AQA A-Level Biology. 3.2 – Cells Text Questions and Answers 100% Solved Structure of Nucleus. 1. Nuclear envelope: double membrane surrounding nucleus, outer membrane continuous with the (R)ER of the cell. Nuclear pores: allow the passage of larger molecules, such as mRNA, out of the nucleus. Nucleoplasm: granular, jelly-like material making up the bulk of the nucleus. Chromosomes: protein-bound, linear DNA. Nucleolus: small spherical region(s) in nucleoplasm. Manufactures ribosomal R...

1. Describe common structural and functional features of eukaryotic cell. A. 1. Though mammals contain many types of cells which differ in function, shape, size etc., they have common features. 2. All types of cells contain nucleus, membrane and sub cellular components etc. 3. Each cell component has uniqe structure and function. Nucleus 1. It is located in the centre of most of the cells. It is surrounded by double layered membrane in which pores are present. 2. Pores present in...

USABO EXAM QUESTIONS AND ANSWERS Eukaryote - ANS An organism whose cells contain complex structures enclosed within membranes. The defining membrane bound structure that sets them apart from prokaryotic cells is the nucleus or nuclear envelope within which the genetic material is carried. All large complex species are eukaryotes, including animals, plants and fungi. Euchromatin - ANS This shows as pale areas in the nucleus under electro magnification. It is a less densely packed for...

What is the main component of the cell and what does it contain? - The nucleus; it contains the nucleolus What is the nucleolus composed of(4)? - RNA, Most of the cellular DNA, DNA-binding proteins, & histones What do histones do and why are they important? - They regulate DNA activity. -Histones bind to DNA and fold it into chromosomes for cell division. -DNA chain in eukaryotic cells are extensive so risk of breakage is high What are ribosomes? - RNA-protein complexes (nucleoproteins)...

Apoptosis - Answer- A programmed cell death that is regulated or programmed. Cellular self-destruction for elimination or unwanted cell populations Necrosis - Answer- Rapid loss of the plasma membrane structure, organelle swelling, mitochondria dysfunction What is the #1 cause of cellular injury leading to necrosis (especially the kidney and heart) - Answer- hypoxia What is the #1 cause of hypoxia? - Answer- ischemia Main component of a cell - Answer- nucleus What does the nucleus...

Eukaryote correct answersAn organism whose cells contain complex structures enclosed within membranes. The defining membrane bound structure thats sets them apart from prokaryotic cells is the nucleas or nuclear envelope within which the genetic material is carried. All species of large complex species are eukaryotes, including animals, plants and funghi. Euchromatin correct answersThis shows as pale areas in the nucleas under electro magnification. It is a less densly packed form of chromati...

1.Nuclear pores: A)Combine to form a hexagonal structure B)Have 50nm in diameter C)Their number is not connected with cellular activity D)Nuclear lamina are connected to their inner rings E)A and C are correct F)B and D are correct E)A and C are correct The conducting zone of the respiratory system: A) Includes the upper airways, trachea and the bronchial tree (including the terminal bronchioles) B) Is designed for airflow and respiration C) Includes only the nose and the pharynx ...

MULTIPLE CHOICE 1. Which statement best describes the cellular function of metabolic absorption? a. Cells can produce proteins. c. Cells can take in and use nutrients. b. Cells can secrete digestive enzymes. d. Cells can synthesize fats. ANS: C In metabolic absorption, all cells take in and use nutrients and other substances from their surroundings. The remaining options are not inclusive in their descriptions of cellular metabolic absorption. PTS: 1 REF: Page 2 2. Most of a cell’s ge...

Emergent Properties correct answersDue to the arrangement and interaction of parts as complexity increases. pg 3 Reductionism correct answersThe reduction of complex substances to simpler components that are manageable to study. This is a powerful strategy in biology. pg 3 benign tumor correct answersA mass of abnormal cells that remains at the site of its origin. Heterochromatin correct answersThis shows as dark areas on the eukaryotic nucleas; it is densly packed chormatin (DNA and pr...

Apoptosis ~:- A programmed cell death that is regulated or programmed. Cellular selfdestruction for elimination or unwanted cell populations Necrosis ~:- Rapid loss of the plasma membrane structure, organelle swelling, mitochondria dysfunction What is the #1 cause of cellular injury leading to necrosis (especially the kidney and heart) ~:- hypoxia What is the #1 cause of hypoxia? ~:- ischemia Main component of a cell 1 | P a g e | © copyright 2024/2025 | Grade A+ Master01 | Septe...