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White raven [17]
2 years ago
11

What is the proper name for the electrical system in the heart?

Biology
1 answer:
borishaifa [10]2 years ago
7 0

Answer:

SA node

Explanation:

The SA node (called the pacemaker of the heart) sends out an electrical impulse. The upper heart chambers (atria) contract. The AV node sends an impulse into the ventricles. The lower heart chambers (ventricles) contract or pump.

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Production of oxygen during photosynthesis
VikaD [51]

The process that produces oxygen is the photosynthesis and when oxygen is released as the result of its production during photosynthesis, it is a by-product of splitting the water molecules. The reduction of oxygen which forms water occurs during respiration.




6 0
3 years ago
HELLPP! ITS BIOLOGY
larisa [96]

Answer:

So that in a guinea pig cross in the offspring the recessive trait —long hair— can be observed in 25%, the most probable genotype of the parents is heterozygous Ss.

Explanation:

In guinea pigs, for the characteristic<u> hair length, short hair is the dominant allele and long hair is the recessive one</u>.

In order for 25% of the offspring to express the recessive characteristic, the parents must have a recessive genotype, which can be seen in Punnett's Square:

P: <u>Ss X Ss </u>

<em>Alleles     S     s </em>

<em>S             SS   Ss </em>

<em>s             Ss    ss </em>

Where the offspring is:

  • <em>50% Ss with short hair phenotype </em>
  • <em>25% SS with short hair phenotype </em>
  • <em>25% ss whose phenotype would be long hair. </em>

According to this, heterozygous parents for the characteristic long hair in guinea pigs have a 25% chance of having offspring with long hair.

8 0
2 years ago
Why might rainforests in South America and near the equator be so productive?​
timama [110]

Due to the abundant sunlight,

Suitable temperature

Excessive rainfall on a daily basis leads to flirtatious turnover of nutrients and plant growth is prompt.

4 0
3 years ago
Which sentence is written in third person point of view?
Lostsunrise [7]

Answer:

hope you like it

Explanation:

Examples of sentences written from the third person point of view: She went to the library to consult with the reference librarian about her paper's topic. When he got to his car, he was glad to see that his friend was waiting for him.

4 0
2 years ago
Which of the following best describes a vantage of having data presented in a table over a paragraph?
mixas84 [53]

Answer:

C. The way that the data is organized.

Explanation:

Placing data in a table allows the reader to have a better view and understanding of the data and how each figure is related to the rest, via columns and rows.  It also provides a much better organization of the information.  

A, B and D are false answers, because the aspects they mention wouldn't be impacted by a paragraph formatting (numbers would stay the same, just a lot harder to read and understand).

5 0
2 years ago
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