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Wewaii [24]
3 years ago
10

The trachea needs to be rigid but the esophagus does not. why is this

Biology
1 answer:
Alenkasestr [34]3 years ago
6 0
The esophagus has to be flexible to allow for food to travel from the mouth to the stomach
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Why does the reporter have a tube up his nose? why does the reporter have a tube up his nose? to replace the salts and other ion
Helga [31]
The correct answer is to accurately measure core temperature.
The tube seen entering the reporter's nose is a thermistor which is used to measure the core temperature of the body with very high levels of accuracy. The tube reaches the esophagus, which is one of the most preferred locations for measuring the core temperature.
The core body temperature is the operating temperature of the human body and it refers to the temperature of the deeper structures of the body instead of the peripheral tissues. 
The esophagus is close to the left ventricle of the heart, it has a deep body location and a quick response to any changes in the body temperature. 
6 0
3 years ago
Suppose that when you examined your tubes (in this exercise) after incubating them, you noticed that the unsealed control contai
aivan3 [116]
The Oxidation-Fermentation Test is used to differentiate bacteria built on their capability to oxidize or ferment specific sugars.
Once microbes are inoculated,-One tube is sealed with a layer of sterile mineral oil to promote anaerobic growth and fermentation.-The other tube is left unsealed to allow aerobic growth and oxidation.
Organisms able to ferment the carbohydrate or ferment and oxidize the carbohydrate will turn the sealed and unsealed yellow throughout.
Organisms able only to oxidize the sugar will turn the unsealed yellow medium and leave the sealed medium green or blue.
Fragile fermenters will convert both tubes slightly yellow at the top.
Organisms not able to metabolize the sugar will either produce no color change or will turn the medium blue due to alkaline products from amino acids degradation.
Since Pair #1 showed complete yellowing for sealed and unsealed, these Organisms able to ferment the carbohydrate or ferment and oxidize the carbohydrate. So our interpretation will be that the organism has: Oxidation and fermentation OR fermentation only.
For tubes #2 and #3, the sealed tubes were green throughout suggests that they need oxygen for aerobic growth, and the fact that their unsealed tubes showed light yellowing is evidence for oxidation. Sealed - Green and Unseal - Yellow. Our interpretation for these pairs of tubes would be : Oxidation
Tube 1 can be either Oxidation and fermentation OR fermentation only. So reliability of this needs to be confirmed more with additional testing.
Tubes 2 and 3 are most reliable because they can only be oxidation only and no fermentation.
6 0
3 years ago
An unlabeled hierarchical diagram of various astronomical bodies is shown. The labels A, B, C and D can be used to represent the
Sliva [168]

Answer:

Part 1:

The four astronomical bodies one could choose to represent the 4 labels in the diagram are

A - universe

B - galaxy

C - solar system

D - Mars

The universe contains galaxies and galaxies holds solar systems which have planets like Mars

Part 2: D or a planet like Mars is unlike all their other astronomical bodies it does not have other astronomical bodies within it thus, its different from rest.

8 0
3 years ago
That addictive behaviors produce the same brain responses that follow drug abuse. in both cases, several regions deep inside the
Kitty [74]
The answer is:  "dopamine" .
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8 0
3 years ago
Read 2 more answers
In the world of purple people eaters, one eye (E) and one horn (H) are dominant traits. Purple people eaters
Tju [1.3M]

Answer:

3

Explanation:

Male ; EeHh

Female ; EeHh

Then,

possible gametes for each = EH / Eh / eH / eh

where,

                            EH                    Eh                   eH                    eh

EH                      EEHH               EEHh              EeHH               EeHh

                     <em>   One eye            One eye         One eye          One eye</em>

<em>                         One horn          One horn        One horn        One horn</em>

<em />

Eh                      EEHh                 EEhh               EeHh                Eehh

                       <em>One eye              </em><em>One eye</em><em>         One eye          </em><em>One eye</em><em> </em>

                        <em>One horn            </em><em>Two horn</em><em>       One horn         </em><em>Two horn</em>

eH                     EeHH                  EeHh              eeHH                eeHh

                        <em>One eye             One eye         </em><u><em>Two eye</em></u><em>          </em><u><em>Two eye </em></u>

                        <em>One horn            One horn        </em><u><em>One horn</em></u><em>        </em><u><em>One horn</em></u><em> </em>

eh                     EeHh                   Eehh                eeHh                eehh

                      <em>One eye              </em><em> One eye    </em><em>      </em><u><em>Two eye</em></u><em>          </em><u><em> Two eye </em></u>

<em>                       One horn              </em><em>Two horn </em><em>       </em><u><em>One horn</em></u><em>         </em><u><em>Two horn </em></u>

<u><em /></u>

Therefore,

One eye, one horn:One eye, two horn:<u>Two eye, one horn</u>:Two eye,two horn

is,

9 : 3 : <em><u>3 </u></em>: 1

This ration proves that the above working is correct and is dihybrid cross.

6 0
3 years ago
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