1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lutik1710 [3]
3 years ago
6

Yawning is a reflexive action that is often associated with sleepiness. when a person yawns, the mouth opens, and a longer than

normal breath of air is inhaled, followed by a longer than normal exhalation. hypothesizing that yawning has a regulatory mechanism similar to breathing, scientists conducted an experiment on college students to test the effect of ambient carbon dioxide levels on yawning. the scientists investigated carbon dioxide levels in their experiment because high carbon dioxide levels in the ________ signal control centers in the brain to increase rate and depth of inhalations and exhalations.
Biology
2 answers:
lina2011 [118]3 years ago
8 0
The level of carbon dioxide in the arterial blood which is the answer signals the control centers in the brain to increase the rate as well as the depth of breathing specifically the inhalation and exhalation. Arterial blood is the oxygenated blood in one's circulatory system.
drek231 [11]3 years ago
6 0
<h2>Answer:</h2>

The correct answer in the blank is arterial blood.

<h3>Explanation:</h3>

The elevated levels of CO2 in the arterial blood signals the brain to increase the rate and depth of inhalations and exhalations.

Blood in the veins normally has the high concentration of CO2.

<em><u>Arterial blood contains very low level of CO2 and High level of CO2 in this blood signals brain to increase breathing rate.</u></em>

You might be interested in
Nutrients enter a cell ______ the concentration gradient by the process of _______.
sergejj [24]
A. Nutrients and other materials pass through the cell membrane through the process of diffusion. This allows the cell to perform all the activities it requires for daily maintenance and living. The concentration gradient allows the cell to regulate just how much of a certain material passes through it.
6 0
3 years ago
Read 2 more answers
In our lives, we rarely experience temperatures that are above 373 K (100 °C) or below 273 K (0 °C). Investigate how much diffus
Mariulka [41]

Answer:

Global and I have been working for the last three years and have been working with a company based based on the following areas for big growth in the UK with the team in North

Explanation:

7am and the family will have a better understanding than the other in the UK or elsewhere in the UK or Europe and are not liable for any of the services or services that are in the UK next week and will also not have to pay for the distance and the family will also need a lot of information to help with the team to work with the team to work with the team to work with the team and provide a service for them in the workplace to the workplace as the service is not fully functioning properly and they will not be allowed to be charged for the service charge to the council tax and the council tax will not be paid for the council tax which is not covered by the council tax which is to be paid by the council tax and the council tax has been paid for the property to be paid by the council tax and the council tax has been paid for the property to be paid by the council tax and the council tax has been paid for the property to be paid by the council tax and the council tax has been paid for the property to be paid

6 0
3 years ago
Why do plant cells have chloroplasts, but animal cells do not
ad-work [718]
<h2>Mark me brianliest plz I really need it</h2>

Explanation:

<h2>In order to do photosynthesis, a plant needs sunlight, carbon dioxide (CO2) and water. Once the sugar is made through photosynthesis, it is then broken down by the mitochondria to make Page 2 energy for the cell. Because animals get sugar from the food they eat, they do not need chloroplasts: just mitochondria.</h2>
6 0
3 years ago
Yeast has many commercial uses in the production of ____. Select all that apply.
Julli [10]

Answer:

Bread, Fuels, Wine

Explanation:

It helps bread rise. Fuel=new developments in biofuel. Wine, yeast is used to differentiate the grape juice from wine.

8 0
3 years ago
Read 2 more answers
A single stranded nucleic acid that plays a role in protein synthesis. there are three different types.
Taya2010 [7]
<span>A single stranded nucleic acid that plays a role in protein synthesis is known as the messenger RNA or mRNA (messenger Ribonucleic Acid). The other two types of nuclei acids are transfer RNA or tRNA and ribosomal rNA or rRNA. These nucleic acids are involved in cellular division in cells, during which transcription and translation occurs.</span>
3 0
3 years ago
Other questions:
  • The goldenrod gall-fly lays its eggs on the terminal buds of goldenrod plants. Larvae chew through the buds and into the stems,
    8·1 answer
  • Which of the following statements is true?
    6·2 answers
  • Based on figure 9-4, which pathway is most efficient at producing energy for a cell? Explain your answer.
    9·2 answers
  • What if the name of the enzyme used to make RNA nucleotides?
    7·1 answer
  • Which best describes reproduction?
    13·1 answer
  • How might biology help you to better understand environmental issues?
    11·1 answer
  • Which is the most abundant chemical found in living cells?
    14·1 answer
  • What is currently the largest disadvantage of hydrogen as an energy source
    7·2 answers
  • Finally online classe over<br> now tell me tge meaning of tracheophytes?<br>​
    15·1 answer
  • Characteristics of life living things worksheet biology 
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!