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MrRissso [65]
3 years ago
11

Replication origins have ________ DNA sequences that attract _______ proteins. A. A-T rich; histone B. G-C rich; Helicase C. A-T

rich; initiator D. Repetitive lines; histone E. G-C rich; initiator
Biology
1 answer:
goldfiish [28.3K]3 years ago
7 0

Answer:

C. A-T rich; initiator

Explanation:

Replication origins have A-T rich DNA sequences that attract initiator proteins.

Replication origin is the DNA sequence where replication is initiated in a genome. The replication origin sequences is rich in adenine (A) and thymine (T) bases because it is easier to break the bonds between the bases compared to the bonds between guanine and cytosine. adenine (A) and thymine (T) bases have two bonds joining them as against three bonds between guanine and cytosine

The initiator proteins recognizes  DNA sequences in the replication origin and helps to initiate DNA replication.

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QUESTION 1
Paladinen [302]

Answer:

1. RNA

2. Cytosine and guanine

3. RNA

4. Replication

5. Unwinding the double helix

6. DNA polymerase

7. Identical

8. Repair the DNA

9. Changes in nucleotides of a DNA molecule that affect the genetic message

10. The gene for beta-galactosidase turns off.

11. p53

12. A part of DNA that does not code for a functional protein

13. Proteins

14. Transfer RNA

15. The making of an RNA molecule from a DNA strand by pairing of bases of RNA nucleotides with the complementary bases in DNA

16. 3

17. Tertiary

18. Enzymes

19. The reaction slows down.

20. The active site of an enzyme

21. 60%

22. Conserved energy

23. different

24. Gene expression

I hope that this helps you !

5 0
3 years ago
Gary is designing an investigation to find out how blood phenotypes are determined by heredity. Which observation most clearly s
vekshin1

Answer:

A

Explanation:

4 0
3 years ago
After a big meal, in those individuals who do not have type i diabetes, the pancreas secretes insulin, which circulates through
chubhunter [2.5K]
This is an example of negative feedback. 

After a big meal, glucose levels in the bloodstream increases. The body recognises this change and goes through homeostasis, or the regulation of bodily state or internal environment.

The pancreas secretes insulin, which then binds to insulin receptors. This will result in the uptake of excess glucose from the bloodstream into cells and converted into glycogen to be stored in cells as energy storage molecules. 

Since there is the counter effect of body (i.e. when blood-glucose concentration increases, the body sends a signal to decrease the blood-glucose concentration, this is called a negative feedback (instead of a positive feedback, which occurs if for e.g. the body signals cells to increase blood-glucose concentration even after blood-glucose concentration increased after a heavy meal).

Hope this helps! :)
7 0
3 years ago
2. The Earth experiences different seasons due to the:
Scorpion4ik [409]
The answer is to your question is A
4 0
3 years ago
I WILL GIVE BRAINLIEST! This is for 9th Grade Honors Biology... You need to place the words from the word bank in the correct or
Lera25 [3.4K]

Traits included physical features such as flower color. Today, these factors are called <u>alleles</u>.  Mendel developed the hypothesis that some factors could be dominant, while others were <u>recessive</u>. According to his theory, a dominant factor is expressed when <u>only one factor is presen</u>t in the offspring. On the other hand, a <u>recessive</u> factor expresses its <u>phenotype</u> when <u>both factors are present</u> in the offspring. Today, the term<u> genotype </u>refers to the combination of factors possessed by an organism.

  1. alleles
  2. recessive
  3. only one factor is present  
  4. recessive
  5. phenotype
  6. both factors are present  
  7. genotype

7 0
3 years ago
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