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🎯 Serway physics edition 6
https://t.me/+ysXtXDWsh0ozNzdk

Important terms in Biology for EUEE.

➖ DNA: Deoxyribonucleic acid, a molecule that carries genetic information.
➖ #RNA: Ribonucleic acid, a molecule that plays a key role in protein synthesis.
➖ Protein: A macromolecule made up of amino acids that carries out a variety of functions in the cell.
➖ Enzyme: A type of protein that catalyzes chemical reactions in the cell.
➖ Cell membrane: The thin, flexible layer that surrounds all cells and regulates the movement of molecules in and out of the cell.
➖ Mitosis: The process by which a single cell divides into two identical daughter cells.
➖ #Meiosis: The process by which cells divide to produce gametes (sperm and eggs), each with half the number of chromosomes as the parent cell.
➖ #Gene: A segment of DNA that codes for a specific protein or trait.
➖ #Allele: One of two or more alternative forms of a gene.
➖ #Mutation: A change in the DNA sequence that can result in altered gene function or the creation of new alleles.
➖ #Natural selection: The process by which individuals with advantageous traits are more likely to survive and reproduce, leading to the evolution of populations over time.
➖ #Adaptation: A trait or characteristic that increases an organism's fitness in its environment.
➖ #Photosynthesis: The process by which green plants convert sunlight into energy in the form of organic compounds.
➖ #Cellular respiration: The process by which cells convert organic compounds into energy in the form of ATP.
➖ #Ecosystem: A community of living and non-living things that interact with each other and their environment.
➖ #Homeostasis: The ability of organisms to maintain a stable internal environment in the face of changing external conditions.
➖ #Evolution: The process by which species change over time as a result of genetic variation and natural selection.
➖ #Ecology: The study of the interactions between living organisms and their environment.
➖ #Biotechnology: The use of living organisms or their products to develop new products or processes.
➖ #Epidemiology: The study of the distribution and determinants of health and disease in populations.
➖ #Chromosome: A structure made of DNA and protein that carries genetic information.
➖ #Cytoplasm: The gel-like substance inside a cell that contains organelles and other cell components.
➖ #Organelle: A specialized structure within a cell that performs a specific function.
➖ #Nucleus: The control center of a cell that contains the cell's DNA.
➖ #Ribosome: The site of protein synthesis in a cell.
➖ #Mitochondria: The organelles responsible for producing ATP through cellular respiration.
➖ #Chloroplast: The organelles in plant cells responsible for photosynthesis.
➖ #Cytoskeleton: The network of protein filaments that give a cell its shape and allow for movement.
➖ #Endoplasmic reticulum: A network of membranes in the cytoplasm that is involved in protein and lipid synthesis.
➖ #Golgi apparatus: An organelle that modifies, sorts, and packages proteins for secretion or transport.
➖ #Lysosome: An organelle that contains enzymes for breaking down and recycling cellular waste.
➖ #Vacuole: A membrane-bound organelle that stores materials such as water, nutrients, and waste products.
➖ #ATP: Adenosine triphosphate, the molecule that carries energy within cells.
➖ #Aerobic respiration: The process of producing ATP in the presence of oxygen.
➖ #Anaerobic respiration: The process of producing ATP in the absence of oxygen.

🧚‍♀An oxidation–reduction or redox reaction, Barnoota keemistirii keessatti qabxiilee murteessoo tahan barataan tokko beekuu qabu keessaa:-

oxidation–reduction or redox reaction isa tokko ። Jalqabarratti mee
oxidation –reduction or redox reaction jechuun maali???

oxidation–reduction or redox reaction jechuun yaa'insi electronoonni qaama tokkorraa gara qaama tokkotti taasisaniidha.
transfer yeroo jennu electronii hir'isuu ykn dabaluu jechuudha.
Redox wanti jedhamu kuni yaadota lama of keessaa qaba. Isaanis oxidation fi reduction jedhamu
። oxidation jechuun kan electroonii kenne ykn jalaa fudhatameedha, elementii,ion , compound tahuu mala. reduction ammoo elementii,ion,compound tahuumala , electron kan fudhate ykn argate jechuudha.

Bal'inaan asii gadii dubnisi....
🌹oxidation–reduction or redox reaction is a reaction that involves the transfer of electrons between chemical species (the atoms, ions, or molecules involved in the reaction). Redox reactions are all around us: the burning of fuels, the corrosion of metals, and even the processes of photosynthesis and cellular respiration involve oxidation and reduction.


📚During a redox reaction, some species undergo oxidation, or the loss of electrons, while others undergo  reduction, or the gain of electrons. For example, consider the reaction between iron and oxygen to form rust:

👨‍🏫An atom’s oxidation number (or oxidation state) is the imaginary charge that the atom would have if all of the bonds to the atom were completely ionic. Oxidation numbers can be assigned to the atoms in a reaction using the following guidelines:

Rules for Assigning Oxidation Numbers


1,The oxidation number of a free element is always 0. The atoms in He and N2, for example, have oxidation numbers of 0.

2,The oxidation number of a monatomic ion equals the charge of the ion. For example, the oxidation number of Na+ is +1; the oxidation number of N3- is -3.

3,The oxidation number of oxygen in compounds is usually -2. Exceptions include OF2 because F is more electronegative than O, and BaO2, due to the structure of the peroxide ion, which is [O-O]2-.

4,The oxidation number of oxygen in compounds is usually -2. Exceptions include OF2 because F is more electronegative than O, and BaO2, due to the structure of the peroxide ion, which is [O-O]2-.

5,The oxidation number of a group lA in a compound is +1.
The oxidation number of a group llA elements  in a compound is +2.

6,The oxidation number of a group vllA  in a compound is -1, except when that element is combined with one having a higher electronegativity. 

7,The oxidation number of Cl is -1 in HCl, but the oxidation number of Cl is +1 in HOCl.

This is a worksheet about some of unit one lessons. Try it by yourself with two weeks before the answer will be released.

NOTICE FOR WAHEL SECONDARY SCHOOL STUDENTS
This is not the Unit One Worksheet questions I told you to post it for you. The questions are being typed; therefore, wait it within this weekend.

The following questions are intended to evaluate grade 12 students understanding of some lessons in unit one. Try them all.

▫️Chemistry grade 10 unit 3 handout

Grade 10 Physics

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7/2/2017

Proverbs

Proverb are short , catchy , and wise sayings that express common truths or observations. Proverbs are often used to convey advice, warn against mistakes, or offer encouragement. They can be found in almost every culture around the world and are often passed down through generations.

There are many types of proverbs used in different languages and cultures. One common type is the '' Time Proverb'.

Time Proverb

Time proverb is a wise saying that expresses a common truth or observation related to time. These proverbs often offer advice or warnings about the value, passage, or consequences of time.


Time Proverbs with Meanings


1.Time flies when you're having fun.

Meaning: When you're enjoying yourself, time seems to pass quickly.

2.Time is precious.

Meaning: Time is valuable and should not be wasted.

3.Time waits for no man.

Meaning: Time passes regardless of what you do.

4.A stitch in time saves nine.

Meaning: Taking care of a small problem now can prevent a bigger problem later.

5.There's a time for everything.

Meaning: Everything has its appropriate time.


6.Don't put off until tomorrow what you can do today.

Meaning: Do things promptly instead of delaying them.

7.Early to bed, early to rise, makes a man healthy, wealthy, and wise.
Meaning: Getting enough sleep and waking up early can contribute to a healthy, successful life.

8.All good things must come to an end.
Meaning: Nothing lasts forever.

9.The early bird catches the worm.
Meaning: If you start early, you have a better chance of success.

10.Lost time is never found again.
Meaning: Once time has passed, it cannot be recovered.

ለ2017 12ተኛ ክፍል እና ለሪሚዲያል ተፈታኞች የሚጠቅም አሪፍ የማትሪክ አፕ ነው። ይሄን አፕ ከሌሎች በተሻለ ለናንተ ለምን እንደመረጥነው እንገራችሁ።

📆የ2014/15 ፈተናን ጨምሮ የብዙ አመት የማትሪክ ፈተናዎችን ከነመልሳቸው ይዟል(ከ10,000 በላይ ጥያቄዎች)።
🔘 ሁሉንም የሶሻል እና የናቹራል ፈተናዎች አኳቷል።
🛜 አፑን ለመጠቀም ምንም አይነት ኢንተርኔት አይጠይቅም።offline አፕ ነው።
📊ብዙዎች ጥያቄዎች በምዕራፍ እና በክፍል ደረጃ የተከፋፈሉ ስለሆኑ ብዙ ጥያቄ የሚወጣበትን ምዕራፍ ለመለየት ያስችላል።
🌐የዘንድሮ ፈተና በonline ስለሆነ አፑ አፈታተኑን እንድትለማመዱት ያግዛችኃል።

ሌሎች ያልጠቀስኳቸውን  የአፑን ይዘቶች አፑን አውርዳችሁ ማየት ትችላላችሁ።
የPlaystore አካውንት የሌላችሁ ወይም ለማውረድ ለማይመቻችሁ ተማሪዎች አፑን ከዚህ ላይ ለቀንላችኃል አውርዱት።ለሌሎችም ተማሪዎች ሼር እንድታረጉ ግብዣችን ነው።

"እናንተን ለማገዝ ሁሌም ዝጉጁ ነን የሚያስፈልጋችሁ ነገር ካለ ጠይቁን።መልካም የፈተና ዝግጅት ይሁንላችሁ።"

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1F. Writing Skills
1F.1. Rearranging Words and Phrases to Make Meaningful Sentence (Word Order)
*Sentence is a group of words that are arranged in correct order of the language rule. Therefore, in order to put words in correct order, we need to know basic English sentence patterns. Also we need to know order of adjective and position of adverb in sentence.
As for English sentence pattern, we have to consider the four types of sentences-- i.e. statement, interrogative, imperative, and exclamatory.
Each of these four types of sentence has distnict or unique structure. Moreover, a single type of sentence has multiple patterns. Let us see one by one as follow.
A. STATEMENT SENTENCE PATTERNS
1. Subject +verb
This pattern is observed in intranstive verb and the simplest sentence structure. It can have two words; however, when either the subject or the verb is in phrase form, the sentence can have multiple words.
Examples
a. Edward laughed.
b. Bob has died.
c. Marry has just come.
d. The naughtiest boy in the class has been laughing.
2. Subject +verb + direct object
This sentence pattern works in a sentence with trantive verb.
Look at the following examples
a. Margaret recalled a memory.
b. President Baiden gave a speech.
c. All the students in the school have signed the pitetion.
d. The cleverest carpenter of the town has been building the guest house nicely.
3. Subject +verb + indirect object +direct object
Some English verbs takes two objects-- i.e. direct and indirect objects. These verbs include give, send, show, lend, tell, teach, offer, buy, bring, write etc. Sentences with these verbs often have two objects. Direct object is noun on which action directly take place. Indirect object is a noun for/ to which the action is taken place.
Examples
a. I gave my sister a birth day present.
b. My parents told me that story.
c. The teacher showed us a nice picture.
d. The young boy has sent his friend a greeting letter.
4. Subject +verb + direct object + preposition +indirect object
Examples
a. My friend has sent a lettervto me.
b. Some parents buy cellphone for thier children.
c. His colleague brought bunch of flowers for him.

5.Subject + verb + complement
This sentence pattern works with linking verbs. Linking verbs include verb to be, sense verb, and some verbs such as remain, grow, turn, prove, feel, stay, look, seem...
Examples
a. The constitution seemed pleasant.
b. All applicantd were BA graduate.
c. The situation remains calm.
d. The flowers look briliant.

6. Subject + verb + direct object + compliment

Examples
a. The girl thinks herself intelligent.
b. Squirrels drove the dog mad.
c. The news made all happy.
(Will be continued)