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Jet001 [13]
2 years ago
10

When do cells duplicate their DNA?

Biology
2 answers:
Leno4ka [110]2 years ago
4 0

Answer:

dont know raadi solve your self

butalik [34]2 years ago
4 0
When they replicate the DNA, they look it over to make sure they got everything right. Correcting it. The end is two complete replicas of DNA.
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The trp and lac operons are regulated in various ways. how do bacteria regulate transcription of these operons?
Vlada [557]

Operon is not transcribed:

-lac operon: lactose absent

-trp operon: tryptophan present

Positive control transcription of Operon does not speed it up:

Lactose and glucose are present, -lac operon

Tryptophan is lacking in the -trp operon.

Operon is transcribed quickly through positive control:

-lac operon: lactose present, glucose not

Only negative control is used to regulate the trp operon. The operon genes are not transcribed when tryptophan is present.

Both positive control and negative control are used to control the lac operon.

Negative control: —Transcription is inhibited when lactose is missing due to the activity of the repressor protein.

—The repressor protein is deactivated and transcription is triggered when lactose is present.

Positive control: —In the absence of glucose, another regulatory protein (CAP) attaches to the lac operon's promoter, speeding up transcription in the presence of lactose.

Learn more about lac operons here:

brainly.com/question/1695549

#SPJ4

7 0
1 year ago
All adults over the age of 40 experience age-related bone loss. what is the term for this condition?
MakcuM [25]
The answer would be osteoporosis

Osteoporosis comes from word osteo- which mean bones and -porosis which means "pore". The term is used to describe a decrease in bone density which makes them seems like having multiple pores. It is found more in the old patient because the bone formation is decreased.
3 0
3 years ago
QUESTION 16 Each codon in a sequence code for what?
Nikolay [14]
Each codon codes for an amino acid.

Together, they code a protein but that’s not part of the question.

Amino acid is your answer.
4 0
3 years ago
The form of oxygen that combines three oxygen Adams into each molecule is called
Mama L [17]
Hello

The form of oxygen that combines three oxygen atoms into each molecule is called<span>. Poll Everywhere.

Have a nice day</span>
3 0
3 years ago
Read 2 more answers
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3 0
3 years ago
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