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Вопрос по биологии:
кариотип кошки представлен 38 хромасомами. сколько автосом содержится в яйкеклетке кошки? -
Автор:
inocencio
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Ответ:
Клетки бывают соматические(клетки тела) и половые.
Соматические клетки имеют диплоидный набор хромосом(2n).
Половые клетки же,имеют гаплоидный набор хромосом(n).
2n = 38
Так как яйцеклетка имеет гаплоидный набор хромосом(то есть одинарный), то
38 : 2 = 19 хромосом
Ответ: 19 хромосом имеет яйцеклетка.
Еще 4 ненужных тебе вопроса, но это важно для поиска
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Вопрос по казақ тiлi:
СРОЧНО ДАЮ 20 БАЛЛОВ
Берілген тақырып бойынша 2 минуттық монолог құрастырыңыз. Кейіпкерге автор берген
мінездеменің тілдік құралдарын талдап көрсетіңіз (стилі, тілі, сөздік қоры, мазмұны,
грамматикалық және лексикалық құрылымдарды қолдануы, т.б.)
А. Нұршайықов «Аңыз бен ақиқат»-
Ответов: 4
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6 лет назад
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Вопрос по математике:
Искомое число является наибольшим двузначным числом,которое делится на 3,но не делится на 9.найдите это число..очень прошу помогите пожалуйста..срочна надо..-
Ответов: 1
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6 лет назад
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Вопрос по английскому языку:
50 балов!!!!! помогите
Итоговая контрольно-комбинированная работа в 8 классе
1 variant
READING
Harry Bolton didn’t really like sport at all until he discovered something both new and unusual. “I was listening to the radio one day when I heard something that I thought must have been a joke. The DJ was talking about underwater hockey! When I realized it actually was a sport, I decided to find out more about it. To my surprise, I found a local team and before I knew it, I was part of it!”
Unlike water polo, where the action takes place above the water, underwater hockey is played at the bottom of the pool. Players wear masks, flippers and snorkels during the game. “The rulers are simple, you just have to slide the puck into the opposing team’s goal,” says Harry.
Underwater hockey was invented by a British diving club in 1954. Harry told us, “Unfortunately it’s not much of a spectator sport, as all people watching from outside the pool can see are lots of splashing and flippers!”
True or False?
1. Harry Bolton played ice hokey before………..
2. Underwater hockey is like water polo………..
3.Underwater hockey was invented in Canada……
4. According to Harry the rulers are not difficult……
5. You need some equipment such as masks, flippers and snorkels…….
Choose the right variant.
6. Tony’s …… He doesn’t feel comfortable with people.
a. easy-going b. sociable c. shy
7. Dave is …….He must go on a diet.
a. fit b. overweight c. responsible
8. I ……breakfast right now. Can you call a little later?
a. cook b. am cooking c. have cooked
9. Maria is good at languages. She ….. French, Spanish and German.
a. speaks b. is speaking c. has spoken
Fill in the missing preposition using with the phrasal verbs
10. It’s a formal party. You really should put …a tie.
11. Please put me …. to Dr. Green.
12. I can’t put … that kind of behavior any longer.
13. 6. How long can camels go… water?
14. 11. This tie goes….. …. your shirt very well.
15. 12. People can go….water for about three days.
Complete the sentences using Past Simple or Past Continuous, Present Perfect , Present Simple
16. I ….already …….my homework. ( do)
17. I …….this book last year. (read)
18. We …….never …….to Washington. (be)
19.Tom ……computer games at five o'clock yesterday. (play)
20. I…….the dog for a walk every day after school. (take)
Rewrite the sentences using the Passive Voice.
21. Students use computers at their lessons.
22. The teacher explained the rules of the game to the students.
23. They will clean the office tomorrow.
24. John Napier designed the costumes for Cats.
25. They serve dinner from 7:00 pm onwards.
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Ответов: 1
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6 лет назад
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Вопрос по русскому языку:
сочинение чудеса в нашей жизни про день рождения-
Ответов: 4
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6 лет назад
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