Предмет: Биология, автор: Аноним

ДНК сперматозоида человека содержит 109 пар нитратных оснований. определите длину ДНК

Ответы

Автор ответа: syllop

длина одного нуклеотида - 0,34нм
0,34*109=37,06 нм
длина Днк - 37,06 нм

Предыдущий вопрос

Следующий вопрос

Интересные вопросы

Предмет: Математика, автор: ruslantanat973

помогите по математеке

7 лет назад

Предмет: Математика, автор: Аноним

помогите пожалуйста

7 лет назад

Предмет: Английский язык, автор: ulzalgaszatylova

Complete the dialogues below by choosing the correct option (A–D). An example (0) has been done for you.

0 Emily: What do you do at the weekends, Yara?

Yara: My sister and I A going to the cinema.

A like

B like to

C want

D want to

1 Manager: Where’s Mr Davidson?

Assistant: Oh, he’s____ London today.

A in

B on

C to

D at

2 Amirah: Do you like cats?

Chris: No, but there_____ lots of other animals I like.

A is

B be

C are

D was

3 Andrew: Where _____Alicia come from?

Martin: I think she’s from the United States.

A is

B do

C are

D does

4 Teacher: Tell me something about your parents, Lucas.

Student: My mother and father ______ both very tall.

A is

B isn’t

C are

D aren’t

5 Ayla: That’s a nice table, Sophie! Is it new?

Sophie: Oh no, it’s my _____ old dining table.

A mother

B mothers

C mother’s

D mothers’

6 Emma: What do you do after school?

Chloe: I see my friends. Do you visit people, too?

Emma: No, I ____ go out.

A often

B never

C always

D sometimes

7 Katie: Is Charlotte at school today?

Laura: No, she ____ . She’s not well today.

A isn’t

B aren’t

C doesn’t

D hasn’t

8 Alex: I’d like to make a cakе. _____ eggs have we got?

Andrea: Three, I think. Let me check.

A How big

B How much

C How many

D How long

9 Ifrah: Which bus goes to the hospital?

Antonia: ____ the 236. It stops outside.

A Get

B Got

C Gets

D Getting

10 Father: Are we ready to go?

Daughter: No, Mum can’t find ____ hat.

A its

B his

C her

D their

11 Shop Assistant: Can I help you?

Customer: Yes, I’d like to buy_____ trousers.

A a

B an

C this

D these

12 Mother: Where’s that fish I bought? It was on the table.

Daughter: Oh no! The cat ____it.

A eat

B eats

C is eating

D are eating

13 Amanda: I like your new sofa.

Fahima: Thanks. It’s ____ comfortable than the other one we had.

A too

B very

C much

D more

14 Alicia: I’m going to the supermarket. Do you want anything?

Peter: Could you get ____ milk, please?

A a

B any

C some

D every

15 Karina: When do you want to play football?

Aniqa: I ____ to play tomorrow, because I don’t need to go

to work.

A like

B likes

C liked

D ‘d like

7 лет назад

Предмет: Геометрия, автор: baklan100500

докажите,что если da и fb перпендикуляры к прямой ab и ab=af, то треугольники abd и baf равны

10 лет назад

Предмет: Геометрия, автор: Dasha86

В треугольнике АВС АВ=16; ВС=12; АС=9; в треугольнике MNQ MN=12; NQ=9; QM=6,75. Докажите что данные треугольники подобны, и укажите пары равных углов данных треугольников.

10 лет назад