Bio Review – Cells Cell Theory 2.1.1 * All living things are made of cells * Smallest unit of life * Existing cells from pre-existing cells * Contain a blueprint for growth‚ development‚ behavior * Site of all chemical rxns 2.1.2 * Abiogenesis * Living from non-living matter * Robert hook * Compound microscope + observed cork “cells” * Anthony van Leeuwenhoek * Observed blood cells and other “living” cells * Louis Pasteur * Proved
Premium Cell DNA
Unit II Test Review Chapter 4 BB Notes Cells Under the Microscope Cells are microscopic in size. Although a light microscope allows you to see cells‚ it cannot make out the detail that an electron microscope can. The overall size of a cell is regulated by the surface-area-to-volume ratio. 4.2 The Plasma Membrane The plasma membrane of both prokaryotes and eukaryotes is a phospholipid bilayer. The phospholipid bilayer regulates the passage of molecules and ions into and out of the cell. The
Premium Cell Cell membrane
addition‚ a correspondence could be between the mitochondria and the prison generator. The Prison Generator is where all the prisons energy is produced like the Mitochondria produces the cells energy. An additional comparison can be between the Golgi Apparatus and the mail room. The mail room receives mail and sends them to the
Premium Cell DNA Organelle
Biology: Concepts and Connections‚ 6e (Campbell) Test Bank (1) Part (1) Chapter 1 Introduction: The Scientific Study of Life 1) Which of the following statements about the leopard is false? A) Leopards are the largest cat in the genus Panthera. B) Leopards‚ like lions‚ can roar. C) Leopards prefer to eat their kill in trees. D) Leopards are well-adapted for nocturnal hunting. E) Leopards are normally solitary animals. Answer: A Topic: Opening Essay Skill: Factual
Premium Cell Bacteria Protein
Molecular Cell Biology – Spring 2013 Study Guide – Exam #3 Protein Folding & Post-translational Modifications -What are post-translational modifications? - are modifications that a proteins undergoes to achieve its mature state. Such as cutting‚ folding‚ splicing and other processes. -How do proteins achieve their final conformation? - A protein achieves its final conformation by spontaneously folding. All the information that the protein needs as to how to fold is already located
Premium Protein Cell nucleus Endoplasmic reticulum
The role of the accessory NEF protein in HIV infection Kanokporn Tangthamvanich Department of Microbiology and Immunology University of Otago [Word count: 895] The role of the accessory NEF protein in HIV infection In human immunodeficiency virus (HIV) infection‚ there is one essential virulence protein‚ the Nef protein‚ which is identified as a negative factor due to it having a negative effect on viral replication (1). It performs critical functions in the host during the viral life cycle
Premium Immune system
AS Biology - Unit 1 ------------------------------------------------- Metabolism Metabolism is a term to describe all reaction which is taking place within a cell and is separated into two types which are * anabolic = compounds being built up * catabolic = compounds being broken down ------------------------------------------------- Water The water molecule is a molecule which is made up from 2 hydrogen atoms and 1 oxygen atom. It is bounded by 2 covalent bonds and has is polar.
Premium Organism Energy Metabolism
Prokaryotic and eukaryotic cells are both vital to our world today. Prokaryotic cells are simple‚ yet the oldest‚ and were known to evolve around 3.5 billion year ago. Eukaryotic cells are more complex and have been said to appear on Earth 2.5 billion years ago. It is sort of like people or characters in movies. You see them one year and basically understand what they’re doing or going through and then a year or two from now they seem like they become more complicated to understand. That’s just
Premium Cell DNA Eukaryote
proteins were on the outside of the membrane 2. The inner membrane as the outer membrane is visible to the right 3. Mitochondria have a rounded shape and cristae. They can be seen middle right‚ left of middle right and lower right 4. There is a golgi apparatus with cisternae and many vesicles Diffusions of proteins in membrane 1. Time (min) Mean 5 0 10 1.5 25 47 40 92 120 100 2. 3. As time progresses there is an increasin number of cells that have markers fully mixed 4. Membrane proteins can
Premium Cell membrane Temperature Cell
Endoplasmic Reticulum The smooth endoplasmic reticulum functions as a packaging system‚ and unlike its counter part‚ the rough endoplasmic reticulum‚ it does not have ribosomes attached to it. The endoplasmic reticulum works closely with the Golgi apparatus‚ ribosomes‚ RNA‚ mRNA‚ and tRNA. It creates a network of membranes found through the whole cell. The endoplasmic reticulum may also look different from cell to cell‚ depending on the cell’s function. Smooth endoplasmic reticulums are shaped more
Premium Endoplasmic reticulum Cell Organelle