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mr Goodwill [35]
3 years ago
9

Which organisms utilize a one-way air flow through their lungs to maximize airflow efficiency and oxygen consumption?

Biology
1 answer:
Leya [2.2K]3 years ago
6 0
The answer is birds.

Birds <span>utilize a one-way airflow through their lungs to maximize airflow efficiency and oxygen consumption. Although they inhale and exhale through one trachea, air flows in one direction through birds lungs. This is enabled thanks to air sacks. When birds inhale, air travels through the trachea, which further divides into two bronchi. The part of the air enters the lungs, and the other part remains in posterior air sacks. After the first exhalation, the fresh air from the posterior air sacks enters the lung and displace the spent air which is moved to the trachea. In case there is fresh air in the trachea, spent air is moved to anterior air sacks and after following exhale, it flows out from the trachea.</span>
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Two heterozygous loonas are crossed. What proportion of the offspring will have black hair?
soldi70 [24.7K]
Xx * Xx = XX, Xx, Xx, xx

Depending if black hair is Dominant or recessive, then there will be a 75% chance if it’s a dominant allele and 25% if it’s recessive.

Hope this helps!
8 0
3 years ago
Why the dates on the geologic time scale are often changed and updated.
Mashutka [201]

Answer:

Absolute time measurements can be used to calibrate the relative time scale, producing an integrated geologic or "geochronologic" time scale. ... The overall duration and relative length of these large geologic intervals is unlikely to change much, but the precise numbers may "wiggle" a bit as a result of new data.

Explanation:

Hope this helps :)

7 0
4 years ago
Neurons are ______, meaning they respond to changes in their surroundings with changes in their membrane potential.
aleksley [76]

According to the research, the correct option excitable cell. Neurons are excitable cells, meaning they respond to changes in their surroundings with changes in their membrane potential.

<h3>What are Neurons?</h3>

It is defined as the excitable basic units that, together, form the nervous system that receive and emit electrical signals, interconnect forming communication networks that transmit signals through different areas of the nervous system through nerve impulses.

They are a highly specialized type of cell, depending on the distribution of charges on both sides of the neuron, which translates into the ability to conduct nerve impulses throughout the vast neuronal network (excitability).

Therefore, we can conclude that according to the research, excitable cell. Neurons are excitable cells, meaning they respond to changes in their surroundings with changes in their membrane potential.

Learn more about Neurons here: brainly.com/question/10701825

#SPJ1

7 0
2 years ago
Check all locations where a pulse can be taken.
yulyashka [42]

Answer:

carotid  

brachial  

radial  

femoral  

popliteal  

dorsalis pedis

Explanation:

These are all places where your pulse can be taken.

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

3 0
3 years ago
Read 2 more answers
For each of the following, read the characteristics and then identify the kingdom. is mostly unicellular, eukaryotic, and is com
natali 33 [55]

Answer:

1. Kingdom Protista

2. Kingdom Eubacteria

3. Kingdom Archaeabacteria

Explanation:

1. Kingdom Protista is one of the the six kingdoms. It consists of organisms called PROTISTS that are eukaryotic i.e. possess a membrane-bound nucleus and mostly single-celled (unicellular). Protists are eukaryotic organisms like plants, animals and fungi but their characteristics do not fit into any of these three eukaryptic groups. Protists include; algae, amoeba, etc.

2. Kingdom Eubacteria, as their name implies, are known as true bacteria. The constituent organisms of this kingdom are prokaryotic i.e. lack a membrane-bound nucleus and single-celled (unicellular). They possess a cell wall, in addition to their cell membrane, that is made up of PEPTIDOGLYCAN. Examples of organisms in this kingdom are Streptococcus, Bacillus etc.

3. Kingdom Archaebacteria were once grouped together with the true bacteria as kingdom Monera but were split because of their obvious differing characteristics. Archeans are single-celled prokaryotic organisms characterized majorly by their ability to live and thrive in extreme environmental conditions e.g hot conditions, anoxia conditions (no oxygen).

3 0
4 years ago
Read 2 more answers
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