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aleksandr82 [10.1K]
3 years ago
15

2. Which type of stem cell gives rise to red and white blood cells?

Biology
1 answer:
IrinaVladis [17]3 years ago
6 0

endothelial is the ans dud

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Which of the following Statments describes what the scientists most likely observed?
yaroslaw [1]
I think the answer is c
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3 years ago
Explain any two specific adaptation that allow animal to survive in Mountain habitat<br><br>​
IRISSAK [1]

Answer:

Among others, two adaptations might be

  1. Avoiding corporal heat loss
  2. Increasing oxygen absorption  

Explanation:

Up in the mountains, there is low oxygen, food is scarce, and adverse meteorological conditions. Animals and plants need to develop different strategies to survive. These adaptations involve not only physical and physiological changes but also behavioral changes. To mention a few adaptations, we can name:

  • Avoiding heat loss. Temperature tends to be very low at highs, so, to <u>avoid heat loss,</u> animals develop shorter legs, tails, and ears. By doing this they reduce the area or surface of heat loss and also avoid getting frozen. In mammals, the coat is also very important. A thick coat helps them maintain a constant body temperature and keep warm. Some amphibians might also develop a thicker skin as they can not regulate their temperature, and it also helps them not to dehydrate.
  • Camouflage: Coat is also helpful in camouflaging. Mammals´ hair color depends on their environment. Some animals, such as hares, can also change their fur color depending on the season. During snow seasons they turn white, and during the warmer season, they turn yellow or brown.
  • Size and metabolism: Small mammals lose heat very fast, so they need to keep active and feeding most of the time. They have an elevated metabolism to keep warm. On the contrary, big animals, such as bears, need to hibernate to reduce their metabolism and get to survive, otherwise, they would need many reserves to cover their energetic requirements.
  • Oxygen absorption: Some animals have adapted to the lack of oxygen by increasing their heart and lungs capacity as well as their capability to absorbing more oxygen from the blood.  
5 0
3 years ago
If the moon were to suddenly disappear, which of the following would be a likely result? (Select all that apply)
solniwko [45]

Answer:

A. Fishing for sea life that lives on or near the shore would be more difficult.

C. The California Grunion fish would have a hard time laying eggs.

Explanation:

The moon is an important aspect of Earth's existence. It influences the change of "ocean tides" <em>(high tide and low tide)</em>. If the moon were to suddenly disappear<em> it will present a number of problems. </em>

Firstly, the tides would<u> all remain the same</u><em> (small tides)</em>. They would also be <em>smaller </em>than the usual tide in the world today. Since the tide will be lower than usual, <u>the marine organisms will not survive living on or near the shore anymore. </u>This will make fishing for sea life in these areas more difficult.

The "California Grunion fish" normally lays its eggs along the <em>coastal areas,</em> which is <em>out of the water.</em> If the tide will be lower than usual, then they will have a hard time going to the coastlines for laying eggs.

So, this explains the answers.

4 0
3 years ago
Identify the type of macromolecule that is constructed of long chains of monomers called amino acids.
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Antagonsitic effect/interaction/response

In order to combat antiobiotic resistance, and to possibly enhance the activity of antibiotics, they are sometimes used in combinations during treatment. However, three possible responses or effects can manifest. 

First is antibiotic synergy, where the combined effect of the antibiotics enhances the activity/potency of the treatment compared to when the antibiotics are administered singly.

The effect is also distinguished from another type of response, which is additive effect, where the combined effect of the antibiotics is more or less equal to the combined activity/potency of each of the antibiotic when applied singly. Antibiotic synergy results in even greater enhancement of the activity of the combined antibiotics compared to additive effect. 

Lastly, there is the antagonistic effect or response, where the combined effect of the antibiotics results in the weakening of the potencies of the antibiotics relative to the combined (additive effect) potencies of each of the antibiotics. 
4 0
3 years ago
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