Рубрика: Կենսաբանություն 9

Դաս 13(10.02-14.02.25)

Օրգանիզմների բազմացման եղանակները սեռական և անսեռ, դրանց կենսաբանական նշանակությունը, առավելությունները և թերությունները։ Բլոգներում ներկայացնել համեմատությունը նշելով օրինակները։

1. Ո՞ր բազմացումն է կոչվում անսեռ` բերել օրինակներ։

Անսեռ բազմացումն է, երբ նոր օրգանիզմը առաջանում է մեկ ծնողից՝ առանց բեղմնավորման։ Օրինակ՝ բակտերիաների բաժանում, կարտոֆիլի պալարներով բազմացում։

2. Ինչպե՞ս կսահմանեք սեռական բազմացումը , նկարագրել  բացառությունները։


Սեռական բազմացումը երկու ծնողից է բջիջները միանում են առաջանում է նոր օրգանիզմ։ Բացառություն որոշ օրգանիզմներ կարող են բազմանալ և սեռական և անսեռ ձևով:

3. Նկարագրել սեռական և անսեռ բազմացման առավելությունները և թերությունները։

Սեռական բազմացում-Առավելություն գենետիկ բազմազանություն, Թերություն դանդաղ է 2 ծնող է պետք։

Անսեռ բազմացում-Առավելություն արագ է, 1 ծնող է բավարար, Թերություն բոլորը նույնն են, հեշտ վարակվում են։

Рубрика: English 9

Focus Review 1

  1. Complete the sentence with the correct form of the words in capitals.
    1) Don’t worry, I’m sure John will be here any minute. He’s the most reliable person I know.
    2) Helen’s almost twenty, but she’s still very immature. She often does silly things.
    3) Lucy is a very caring person and is always ready to help her friends.
    4) Jason is not particularly adventurous. Every summer he goes to the same beach resort in Spain.
    5) All Yvonne’s stories are full of surprises. She’s a very imaginative writer.
    6) Charles is a charming young man.
  2. Read the definitions in brackets and complete the words. The first letter of each word is given.
    1) He wanted to ask Betty out on a date (go out with someone you fancy), but he was too shy.
    2) Most of my ancestors (family members who lived in the past) came from Ireland.
    3) It’s important to protect your sight (ability to see). Remember to wear sunglasses on sunny days.
    4) Laura was a gorgeous girl with red hair and freckles (small brown spots) on her nose.
    5) Scientists are still looking for new ways to treat baldness (the condition of having little or no hair).
  3. Complete the sentences with the Present Simple or Present Continuous form of the verbs in brackets.
    1) Why are you looking at me like that? Is there something wrong with my hair?
    2) Pam does not remember when her mother let her put make-up on for the first time.
    3) Tom is having lunch, and we have to wait for him.
    I do not think this is a good idea.
    5) Stuart looks very smart in his new woollen suit and black leather shoes.
    6) Jane, do you understand why people should be kind to each other?
  4. Complete the sentences with the correct verb forms.
    1) Our uncle is on holiday, and we have been looking after his dog since Monday.
    2) How many bracelets have you made this morning? Enough for everyone?3) I think I have inherited most genes from my mum because we have similar looks.
    4) How long has Gina been working on the project
    5) Helen is very busy at university, but she has not lost touch with her friends.
    6) My older brother has been going to the same music festival for five years now.
  5. Choose the correct answer, A, B, or C.
    1) A: What’s that? A new T-shirt in this photo?
    B: It’s not new. It’s my dad’s old T-shirt from the eighties.
    B. Are you wearing
    2) Al was happy to see Jessica at the school reunion.
    B: And who’s she exactly?
    A: She used to be my best friend in primary school, but when my family moved to Bristol, I B. lost touch.
    3) A: What have you been doing?
    B: Nothing special. I C. have been writing an email to Lucy to ask her about the class project. I hope she replies soon.
    4) A: I guess Tom must be really ___ now that his brother has inherited a
    cottage from their aunt.
    B: He says he isn’t, but I know that is not true.
    C. jealous
    5) A: Can you have a look at this picture?
    B: Well, I’m not sure either.
    A. I can’t make out what it shows.
  6. Read the text and choose the correct answer, A, B, or C.
    PARENTS ON FACEBOOK
    Young people have been using (C) Facebook actively for a long time. In fact, not long ago, people under twenty-five were the biggest group of users. But now, more and more middle-aged people (B) sign up for Facebook, with the 40-54-year-olds becoming particularly interested in it.
    So, what do your parents think (A) about Facebook? If they haven’t created a profile yet, they will probably do so in the near future. And then, they will want to be your online (B) friends and follow your profile!
    When this happens, should you accept or reject their invitation? There is no good answer for everyone. If you have a good relationship (A) with your parents and tell them everything about your life, you may say yes. The worst thing is to do nothing. You can’t pretend you haven’t seen the invitation or say that you’re busy with schoolwork and you’re not using Facebook. Be brave (B) about it. You will have to take a decision one day.

7. Read the text and choose the correct answer, A, B, C, or D.

1) According to the text, Stella McCartney:
B. had a high position at a relatively young age.
2) Which statement is true about Stella McCartney?
D. No animal products are used in her fashions.
3) Why did Stella refuse to work with the factory?
A. The production method was not ethical.
4) In Stella’s opinion, what should designers do?
B. Question the methods of their production.
5) The aim of the text is to
C. Explain the philosophy behind Stella’s collections.
8. Look at the photos. They show people discussing what clothes to wear. In pairs, take turns to compare the photos and say why the people might have different opinions about the clothes.
9. Do you find it easy to choose what clothes to wear?

It is usually easy for me to choose what clothes to wear. For everyday, I pick something comfortable and good for the weather. If I go to a special event, it is a bit harder. I want my clothes to look nice and match the occasion. Sometimes, I take more time to decide.

10) Read part of an email you have received from your
Hi Dave,

Thanks for your email! That sounds like a great idea. I have a friend named Arman who would love to exchange emails with Ryan. He is 16 years old and lives in Yerevan, the capital of Armenia. Arman speaks good English and enjoys meeting new people. He is really into football and plays for a local team. He also likes video games, especially strategy games on PC. Arman is very friendly and easy to talk to, so I think he and Ryan will get along well. Let me know if Ryan is interested, and I can give you Arman’s email. Looking forward to hearing from you! Best,
[Robert Mkhitaryan]