• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Chapter 1 Cells
Chapter 1 Cells

... 23. Expressing opinions: Scientists think that millions of years ago the surface of the Earth was very hot and that the atmosphere contained a lot of methane. In your opinion, which type of organism, a eubacterium or an archaebacterium, is the older form of life? Explain your reasoning.  The ...
MMN 4-3 TYPE
MMN 4-3 TYPE

... random changes that accumulate Horizontal gene transfer – transfer of large pieces of DNA from one organism to another 2. Natural Selection – individuals with more advantageous traits at a given time have higher fitness [not acquired within a generation] ...
Week 1 - El Camino College
Week 1 - El Camino College

... site of protein synthesis and processing. • Smooth ER lacks ribosomes and is the site of synthesis of phospholipids and the packaging of proteins into vesicles, among other ...
Our Genes, Our Selves
Our Genes, Our Selves

... B) Over time, the long neck giraffe population decided it liked to eat the leaves on the top of the Acacia trees. This trait was passed on to their offspring. C) Over time, more giraffes were born with shorter necks than longer necks. The giraffes with the shorter necks survived and passed this trai ...
cells! - Catawba County Schools
cells! - Catawba County Schools

... Moves proteins around the cell and has ribosomes attached to the outside. Makes proteins. Makes packages and packages proteins to be transported outside the cell. Breaks down and disposes of food molecules, wastes and worn out cell parts. Releases energy from food to power the cells functions. ...
ORGANIZATION AND CLASSIFICATION
ORGANIZATION AND CLASSIFICATION

... Observe each fruit and choose four characteristics by which you can tell the fruits apart. Label the columns in your table with these four characteristics. Fill out the chart. ...
Biology Glossary
Biology Glossary

... simple cell that does not contain a nucleus; example bacteria organic compound made up of amino acids (hormones, enzymes, antibodies) used for growth and repair in the body positively changed component found in the nucleus of an atom movement of blood around the lungs shows how genes combine. shows ...
3. In complete sentences tell what Pasteur did in the
3. In complete sentences tell what Pasteur did in the

... - Have a nucleus and membrane bound organelles. - Remember mitochondria is the site of cellular respiration and chloroplasts (Found only in plant cells) are the site of photosynthesis. _ ...
CELLS
CELLS

... examples of things that complete these functions?  Lungs, Heart and Liver ...
Evolution Primer - Intelligent Design and Evolution Awareness Center
Evolution Primer - Intelligent Design and Evolution Awareness Center

... B. Common Criticisms of evolution: 1. The “Origin of Life” (not exactly the “evolution of life,” but the chemical starting point of life): • Life has never been created in a laboratory, contrary to popular belief. • If life is ever created in the lab, how would we know it could or would happen that ...
A N N O T A T I O N S F R O M   T H E   L I T E R A T U R E
A N N O T A T I O N S F R O M T H E L I T E R A T U R E

... relationship of dinosaurs and birds is strongly promoted by some, many find the scientific obstacles too great to accept this hypothesis. EVOLUTION: PARALLEL MORPHOLOGICAL CHANGES IN DARWIN’S FINCHES? Freeland JR, Boag PT. 1999. The mitochondrial and nuclear genetic homogeneity of the phenotypically ...
lecture_ch03_for website_updated 11_12_14
lecture_ch03_for website_updated 11_12_14

... include the bacteria and archaea and, as a group, are characterized by tremendous metabolic diversity. ...
Homeobox genes
Homeobox genes

... _______base pairs forming the ____________sequence that codes for a gene product which binds to DNA and initiates ______________. In this way they switch genes that control the development of a _________ ______on or off. • These genes show little mutation because they are very _____________. Mutatio ...
B2 Revision - Tonypandy Community College
B2 Revision - Tonypandy Community College

... Aerobic Respiration This is using oxygen- remember 'air'obic. It's the most efficient way to release energy from glucose. Glucose + Oxygen -> Carbon Dioxoide + Water (+ Energy) Anaerobic Respiration This is without oxygen when there is not enough available. It's not the most efficient way. Glucose - ...
Review for Exam 2
Review for Exam 2

... • Charles Darwin (1809 – 1882) - “on the origin of species by means of natural selection.” • Had two main hypotheses. – Branching descent – living species come from a species that lived in earlier times. This explains common inheritance. – Natural selection – explains that parents with genotypes tha ...
Answer Key for Activity #1 - Center for Occupational Research and
Answer Key for Activity #1 - Center for Occupational Research and

... 2. True/False: DNA leaves the nucleus to be translated into proteins. False, DNA never leaves the nucleus. Only RNA will leave the nucleus. 3. Proteins are made in: a. The nucleus b. On the RNA c. Ribosomes d. Outside the cell Answer: C 4. True/False: Cells contain only the DNA that is relevant to t ...
STUDY GUIDE - 4.2 Evolutionary Evidence
STUDY GUIDE - 4.2 Evolutionary Evidence

... mammal. This resemblance is most likely due to a. adaptive radiation. c. coevolution. b. convergent evolution. d. gradualism. ...
Cells
Cells

... 4. Three nitrogen bases on a strand of DNA code for one specific AA a. Example: DNA base triplet of CCT codes for the AA Glycine b. Remember there are 4 different nitrogen bases A, T, G, C c. In an RNA molecule T is replaced by U d. A single gene has between 300 and 3000 nitrogen bases 5. The role ...
Slide 1
Slide 1

...  They live in a watery environment, in salty oceans, and fresh water or in moist soil. Can be autotroph, heterotroph or switch to both ways if necessary  Some of them live as parasites ...
Lecture 2
Lecture 2

... plasmids is a result of the lack of the rop gene and a single point mutation in rep of pMB1; (2) bla gene, coding for beta-lactamase that confers resistance to ampicillin (source – plasmid pBR322); (3) region of E.coli operon lac containing CAP protein binding site, promoter Plac, lac repressor bind ...
7th Grade Life Science Mid
7th Grade Life Science Mid

... Proteins are made up building blocks called amino acids. Proteins are used by the body for building, healing, and speeding chemical reactions. Two types of nucleic acids are DNA and RNA. They carry the instructions for all life activities. ...
EOC Review Packet
EOC Review Packet

... 1. Nitrogen is the most abundant element in our planet’s atmosphere. 2. Approximately 78% of the atmosphere is comprised of this important element. 3. Nitrogen is used by life forms to carry out many of the functions of life. 4. This element is especially important to plant life. 5. Yet nitrogen in ...
Unity and Diversity
Unity and Diversity

... We will also spend some time on the scientific method so you understand what process a researcher goes through to document new discoveries. The word “science” is derived from a Latin verb meaning “to know”. At the heart of science is inquiry, a search for information and explanation, often focusing ...
Biology End of Course Test (EOCT) Study Guide
Biology End of Course Test (EOCT) Study Guide

... What is demography? How does birth rate, death rate, immigration, and emigration effect demography? ...
Biology - Cobb Learning
Biology - Cobb Learning

... tRNA – smaller segments of RNA nucleotides that transport amino acids to the ribosome Codon- three-base code in DNA or mRNA Anticodon- complementary to a codon found on tRNA Amino Acids- building block of proteins Ribosome- simple cell organelle that helps to make proteins (site of protein productio ...
< 1 ... 39 40 41 42 43 44 45 46 47 ... 70 >

Symbiogenesis



Symbiogenesis, or endosymbiotic theory, is an evolutionary theory that explains the origin of eukaryotic cells from prokaryotes. It states that several key organelles of eukaryotes originated as a symbiosis between separate single-celled organisms. According to this theory, mitochondria, plastids (for example chloroplasts), and possibly other organelles representing formerly free-living bacteria were taken inside another cell as an endosymbiont around 1.5 billion years ago. Molecular and biochemical evidence suggest that mitochondria developed from proteobacteria (in particular, Rickettsiales, the SAR11 clade, or close relatives) and chloroplasts from cyanobacteria (in particular, nitrogen-fixing filamentous cyanobacteria).
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report