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Lostsunrise [7]
3 years ago
12

What enters the heart

Biology
1 answer:
max2010maxim [7]3 years ago
3 0

Answer:

Blood, the heart pumps oxygen-poor blood to the lungs to be oxygenated.

Explanation:

:) Merry Christmas!

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A chemoelectrical signal that can travel along cell membranes in a wave-like pattern is a(n)?
OverLord2011 [107]

A chemo electrical signal that can travel along cell membranes in a wave-like pattern is called a nerve impulse.

What is a nerve impulse?

  • A nerve impulse is an action potential generated across the plasma membrane of the neurons of our nervous system.
  • The electrical potential difference generated across the neurilemma i,e., the plasma membrane of the neurons (due to the reception of the external stimulus), is responsible for the generation of the nerve impulse.
  • Neurotransmitters, chemicals like acetylcholine, dopamine, etc., are also involved in transmitting nerve impulses across neurons.

Hence, the chemoelectrical signal that can travel along cell membranes in a wave-like pattern is a nerve impulse.

Learn more about a nerve impulse: brainly.com/question/14696123

#SPJ1

8 0
2 years ago
Explain how a sprinter gets energy during a 30-second race. Is the process aerobic or anaerobic? How does it
lord [1]

Answer:

sprint runners rely on lactic acid fermentation as there main source of energy,printing takes a lot of effort and a lot of big movements  and a lot energy on demand . cellular respiration makes ATP at a slower rate than lactic fermentation therefore it is anaerobic

Explanation:

the sprinter uses ATP already in muscles as well as ATP produced by lactic acid fermentation. A long-distance runner gets its ATP solely off of cellular respiration

hope this helps

3 0
3 years ago
A force is required to change motion. True False
steposvetlana [31]
False. gravity doesn't change motion but it's still a force
4 0
3 years ago
Describe the role of Cyanobacteria in charging Earth's early atmosphere ​
kvv77 [185]

Cyanobacteria were very simple organisms and performed were an role in changing Earth's early atmosphere. They carried out photosynthesis to produce the materials they needed to grow. In this process, they release Oxygen which is needed to sustain life on Earth for Humans and other organisms.

7 0
3 years ago
What could happen if bacterial DNA is damaged by UV light and the damaged DNA is not repaired by the bacteria?
enot [183]

Answer:

b. neither DNA replication nor transcription can occur, and the bacteria will probably die

Explanation:

Ultraviolet light (UV) is a powerful mutagenic agent that produces thymine dimers among contiguous base pairs. These dimers are highly stable, and thus DNA repair mechanisms are inefficient. UV light is particularly harmful to bacteria and viruses. It is for that reason that UV is used to sanitize by damaging such pathogens, avoiding them from multiplying and consequently also inhibiting transcription.

3 0
3 years ago
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