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Bogdan [553]
3 years ago
7

Which of the following statements about DNA synthesis is true?

Biology
2 answers:
KonstantinChe [14]3 years ago
8 0

Answer:

C. Primers are short sequences that allow the initiation of DNA synthesis.

RUDIKE [14]3 years ago
4 0

Answer:

Primers are short sequences that allow the initiation of DNA synthesis.

Explanation:

DNA synthesis is the process where a DNA molecule create or form another new copy of DNA. I.e when adenine, thymine, cytosine and guanine are join together to form DNA.

DNA synthesis start at a specific place on the chromosome. One daughter strand is initiated at the origin of the parental strand and another is initiated at the opposite origin. The requirements for DNA synthesis are substrates, templates, enzymes and primer.

The enzymes that synthesis DNA,DNA polymerase can add nucleotides to primer of DNA or RNA that is based paired with the DNA because of it's short sequence.

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babymother [125]
1) Long slender leaves ("needles") because:
a) They don't lose a lot of water from photorespiration b/c of low surface area
b) Snow doesn't pile into the branches and break the branches off (snow is very heavy). the needles don't catch and hold very much snow.
2) The wood is soft and bendable. Strong wind doesn't break it, because it flexes. Any snow that does manage to pile on is dropped when the wind blows, or when the weight of the snow bends the Branch down.
Hope this helps! :)
5 0
3 years ago
Name the final form of chemical energy produced by cells during cellular respiration
MariettaO [177]
ATP (Adenosine triphosphate)
3 0
3 years ago
What are the characteristics is associated with innate immunity?
Diano4ka-milaya [45]

Answer: First line of defense, the cells of the innate recognize and respond to pathogens in a generic and fast way and does not confer long-term or protective immunity. Recruitment of immune cells to the sites of infection and inflammation and activation of the complement system cascade.

Explanation:

Innate immunity is a defense system that you were born with and that protects you against all antigens. Innate immunity consists of barriers that prevent harmful materials from entering the body. These barriers form the first line of defense in the immune response. There are also <u>phagocytic cells</u> of the immune system which include: <u>macrophages, neutrophils, and dendritic cells</u>. The membrane receptors of those cells allow it to act on the recognition of danger signals and they are of the type TLR and PRR. These are Antigen Presenting cells which process the pathogens and display their antigens on their surface and takes it to B lymphocytes for the production of antibodies, which is part of the adaptive immune system.

<u>This means that the cells of the innate recognize and respond to pathogens in a generic and fast way</u> and, unlike the adaptive immune response, <u>does not confer long-term or protective immunity to the host.</u>

So, the main functions of the innate immune response include:

  • Recruitment of immune cells to the sites of infection and inflammation, through the production of chemical factors, including specialized chemical mediators, called cytokines.
  • Activation of the complement system cascade to identify bacteria, activate cells and promote clearance of dead cells or antibody complexes.
  • The identification and removal of foreign substances present in organs, tissues, blood and lymph, by leukocytes.
  • The activation of the adaptive immune response through a process known as antigen presentation.
  • Inflammation is one of the first responses of the immune system to infection or irritation. It is stimulated by the release of chemical factors and serves to establish a physical barrier against the spread of infection, and to promote the recovery of some damaged tissue following clearance from pathogens. Chemical factors produced during inflammation (histamine, bradykinin, serotonin, leukotrienes) sensitize pain receptors, cause vasodilation of blood vessels at the scene, and attract phagocytes, especially neutrophils.

5 0
3 years ago
Which of the following would be good ways to reduce a person's risk of dying from
g100num [7]

Answer:

all of them would be good strategies

Explanation:

4 0
2 years ago
How do I analyse this graph
kap26 [50]

Answer:

it is simple. the combine two graphs into one basically by combining two graphs for grey and brown species the red line in between separates green and brown and just take the reading

Explanation:

8=10

12=12

14=1

note equals means frequency

3 0
3 years ago
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