is never present × Consists of a double helix × Molecules short lived × Associated with ribosomes × [Total 6 marks] 2. Structural feature Organelle Function of feature ribosome manufacture / synthesis rRNA; Mitochondrion; Increase surface area for enzyme attachment /ATP synthesis/ oxidative phosphorylation; Lysosome; stack of cisternae / flattened (membrane bound) sacs Protein assembly /conjugation of proteins / secretion / lysosome formation/
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Anatomy Outline Notes Exam 1 Developmental Anatomy – is the way anatomy changes over time in a single species -somites are segmental blocks found in embryos that form muscles & vertebrae etc. Comparative Anatomy – is the comparison of anatomies between different species. -all known vertebrates have common feature (skull & vertebrae): this leads to evolutionary theory. Hierarchy of Structural Organization -Body -> System -> Organ -> Tissue -> Cells -> Chemical/Molecular
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WATER AS OUR NATURAL RESOURSE There are more than 326 million trillion gallons of water on Earth. Less than 3 % of all this water is fresh water and of that amount‚ more than two-thirds is locked up in ice caps and glaciers. With so much water around it seems like there is enough to see us through for millions of years. But did you know that even water‚ which seems to be in abundance‚ might one day become scarce? Each time you throw something as garbage‚ think of where it will finally end up. Whether
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Ross Cambe 3. Molecular microbial ecology and stable isotopes. 14C and C13 Dating- gives us an idea for life‚ when life began and what environment looked like Radioactive- determines how OLD the material is in the environment Stable- Biological ORIGIN of material in environment Based on the concept that during life‚ every living thing accumulates certain amount of 14C Helps us date organisms or discoveries Biogenic origin vs. abiotic origin: 13C. fixed proportion of C12 to 13C Preferential
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Biology‚ SBI4U-B Practice Test Time: 2 hours Total Marks: 100 Instructions • There is a label attached to this page. Compare the course code on the label with the course code printed on the Final Test to make sure that they are the same. Tell the Final Test supervisor immediately if they are not the same. • The Final Test pages are numbered 1 through 12. Check to see that all 12 pages are attached. Tell the Final Test supervisor immediately if there are any pages missing. • You may use a
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What is Life? This perennial question the answer to which has somehow eluded the most brilliant minds. For while scientists have identified many years ago the right mix of the atoms and molecules that constitute cellular material‚ they have not succeeded in ‘switching it on’ to make it alive‚ or ‘breathing life’ into it (Rabago et.al‚2006) In this module you will: a. Explain the concepts of the cell theory b. Identify the parts of a cell c. Describe the function of each cell part d. Differentiate
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BIOLOGY Tingkatan 4 Kertas 2 Dua jam tiga puluh minit PERATURAN PEMARKAHAN Peraturan Pemarkahan ini mengandungi 15 halaman bercetak @ 2011 Hak Cipta MPSM Pahang MARKING SCHEME PEPERIKSAAN AKHIR TAHUN 2011 (TINGKATAN 4) BIOLOGY 4551/2 |No. |Marking criteria |Marks | |1(a)(i) |Able to label P and S.
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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
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the nucleoplasm‚ which is full of chromatin- a DNA/protein complex containing the genes. During cell division the chromatin becomes condensed into discrete observable chromosomes. The nucleolus is a dark region of chromatin‚ involved in making ribosomes. Mitochondrion (pl. Mitochondria). This is a sausage-shaped organelle (8µm long)‚ and is where aerobic respiration takes place in all eukaryotic cells. Mitochondria are surrounded by a double membrane: the outer membrane is simple‚ while the inner membrane is
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Microscopy‚ Cell Structure and Function Task 2 I: Name and describe the four main types of tissues in animals stating their functions and their location in the body give two examples of each type. The four main types of tissues that you will find in eukaryotes are connective‚ muscle‚ nervous and epithelial tissues; each of which having very different roles. Connective Tissue The first tissue type I am going to look at is the connective tissue. This tissue is found all over the body‚ including
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