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Ahat [919]
3 years ago
9

The oxygen atom of H2O has a positive or A negative charge

Biology
1 answer:
slamgirl [31]3 years ago
6 0
The oxygen atom of H2O has a negative charge.
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Which of these is a pure substance? a. diamond b. salt c. ocean water a only a, b, and c a and b b and c
Sloan [31]

The answer is a. and b.

Diamond is pure carbon(C). Salt is pure sodium chloride (NaCl). Ocean water can contain a number of different elements mostly Water (H2O) and sodium (Na)

6 0
3 years ago
A student uses a string to model four pairs of homologous chromosomes in a parent cells. Each Chromosome pair is a different col
Arlecino [84]
<h2>Answer is option "C"</h2>

Explanation:

  • All in all, this procedure includes a "parent" cell parting into at least two "little girl" cells. Right now, parent cell can give its hereditary material from age to age.  
  • Meiosis, then again, is a particular type of cell division that happens in living beings that imitate explicitly. As referenced above, it produces regenerative cells, for example, sperm cells, egg cells, and spores in plants and parasites.  
  • In people, extraordinary cells called germ cells experience meiosis and at last offer ascent to sperm or eggs. Germ cells contain a total arrangement of 46 chromosomes (23 maternal chromosomes and 23 fatherly chromosomes). Before the finish of meiosis, the subsequent regenerative cells, or gametes, each have 23 hereditarily one of a kind chromosomes.
  • Hence, the right answer is option C "four strings, each a combination of different colors"

5 0
3 years ago
Short segments of newly synthesized DNA are joined into a continuous strand by _____.Short segments of newly synthesized DNA are
Sloan [31]

Answer:

a. Ligase

b. Ligase ( it's repeated)

Explanation:

DNA synthesis begins, therefore, by synthesizing a short segment of RNA called a primer, which primer is synthesized by an enzyme called Primasa. Primasa is an RNA polymerase that uses DNA as a template. All fragments of Okazaki begin with a Primer. Subsequently, the DNA polymerase III Holoenzyme performs the synthesis of the corresponding DNA fragment until it reaches the next primer. At that time, DNA polymerase Ia replaces the DNA polymerase Holoenzyme III. The DNA polymerase I is responsible for removing the RNA primer through its 5'P-3'OH exonueotic activity and at the same time fills the hole by synthesizing DNA.

Finally, the two Okazaki fragments have to be joined, it is necessary to link the 3'OH end of a fragment with the 5'P of the next fragment. This work of sealing and joining the successive fragments is done by Ligase.

4 0
4 years ago
A client has undergone a screening colonoscopy. The doctor removed several polyps that were sent to pathology and identified as
alexandr1967 [171]

Answer:

A polyp is a small clump of cells that form in the colon. Most of the time they are harmless but they could develop to be colon cancer which is the reason the polyp needed to be removed.

Explanation:

4 0
3 years ago
Read 2 more answers
Match each term with its definition 1) chromosome 2) enzyme 3) genome. A) all of the genetic material contained in an organism B
Nataly_w [17]
1) chromosome
C) chemicals in plants or animals that make a natural process happen


2) enzyme
A) all of the genetic material contained in an organism

3) genome
. B) the parts of a cell that contain genes and that dictate how an animal or plant develops


hope this helped you:)
5 0
3 years ago
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