Fission and fusion Study guides, Revision notes & Summaries

What force caused the hydrogen, helium, and lithium formed from the big bang to collect and form stars, planets, and other objects, as well as to form the different elements than hydrogen making up these objects? magnetism gravity chemical bonds inertia - -gravity What process generates the energy that stars emit? chemical reaction of hydrogen and oxygen to form water vapor- wrong fission of uranium or other large nuclei to form smaller nuclei fusion of hydrogen or other small nuclei t...

HSC Biology Exam Questions And Answers Asexual reproduction Process by which a single parent reproduces by itself Sexual reproduction A reproductive process that involves two parents that combine their genetic material to produce a new organism, which differs from both parents External fertilisation The process by which the female lays eggs and the male fertilizes them once they are outside of the female Internal fertilisation fertilization of an egg by sperm that occurs insi...

Binary Fission steps - -Initiated when proteins attach DNA to plasma membrane -Begins along ORI region -Newly synthesized DNA also anchored to membrane -Cell elongates until ~2 times its original size and two has two chromosomes on opposite ends of the cell -Cell splits in two Quiescent stem cells, function - Permanently arrested in G0 phase. In adults: can replace non-reproducing specialized cells) ex adult skeletal muscle/myofiber) Steps of quiescent stem cell to myofiber - -Activate...

A long Nail is heated at one end. After a few seconds, the other end of the nail becomes equally hot. What type of heat transfer does this represent? A.Advection B.Conduction C.Convection D.Radiation - correct answer -Conduction The measure of energy within a system A.Temperature B.Convection C.Entropy D.Thermo-dymanics E. Heat - correct answer -Heat How do two isotopes of the same element. A.They have different number of protons. B.They have different number of neutrons. C.The...

Ionization Energy - energy required to remove an electron from an atom in the gas phase Left Side Electrons - have weaker attractions to remove electrons *easier to remove electrons from the left side of the table than the right side* Does it take MORE or LESS energy to remove an electron from Li than from Na? - MORE Why? Because as we move down a group, the orbitals become larger and weaker. While going across the effective nuclear charge increases. (holds onto the electrons tighter) Big ...

APES Final Review Vocabulary Average residence time - correct answer time it takes for a given part of the total reservoir of a particular material to by cycled through the system Gaia - correct answer Greek goddess Mother Earth Sustainability - correct answer the ability to meet humanity's current needs without compromising the ability of future generations to meet their needs Lag time - correct answer time between a stimulus and the response of a system Volatile Organic Compounds...

IAEA definition of a nuclear weapon CORRECT ANSWER a device that releases explosive energy as a result of nuclear fission and fusion What is the appeal of nuclear weapons from a national security perspective? CORRECT ANSWER nuclear weapons deter military rivals from launching an attack on a state out of fear of reprisal; they give state military credibility Disarmament vs. Non-proliferation CORRECT ANSWER disarmament: the full eradication of nuclear weapons non-proliferation: aims to limi...

race - ANSWERa social construct not a biological fact, a concept that organizes people into groups based on specific traits that are thought to reflect fundamental and innate differences (socially constructed idea) hypodescent - ANSWERthe assignment of a person into very stagnant racial categories ethnic group - ANSWERgroup of people who share common cultural backgrounds or descent enthogenesis - ANSWERemergence of an ethnic group (occurs in two ways: fission and fusion) fission - AN...

Organism is an individual, living creature. Characteristics 1. Order : Life is structured into a developmental hierarchy. Highly ordered structures are comprised of the basic unit of life which is the cell. 2. Evolutionary adaption: smaller, genetic changes that allow for better survival of an organism. Example color camouflage. (Generational evolution) 3. Regulation is a Living organisms are sensitive to temperature, environmental stresses, pH requirements etc. and go to great lengths t...

BIO 117 Exam 2 | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+ which protists use pseudopodia to feed Correct Answer: amoebae forams which protists have silica-based skeletons Correct Answer: diatoms which protists are our closest relatives Correct Answer: choanoflagellates; opisthokonta what material is NOT used by protists in hard outer coverings Correct Answer: lignin T/F? fungi are a monophyletic group Correct Answer: true 2 T/F? fungi are more clos...