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anastassius [24]
4 years ago
6

Which immune system cells act as hungry scavengers that trap and ingest worn-out cells?

Biology
1 answer:
Alexus [3.1K]4 years ago
6 0
The answer is macrophages. This is a large cell that has the capability of engulfing targeted cells that are infected or damaged. It is a developed monocyte that came from the bloodstream. It has a system of alerting white blood cells and also can be remembered by the immune system once it has been encountered again.

source: https://www.news-medical.net/life-sciences/What-is-a-Macrophage.aspx
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If the real interest rates increase in the united states but do not change in europe. what impact does it bring to two countries
gregori [183]

Answer:

Explanation:

A country with higher interest rates often has an increase in the value of that country's currency relative to nations offering lower interest rates.

If there is an interest rate increase in the United States but the interest rate do not change in Europe then the United States currency will increase in value relative to the currency in Europe.

Other Factors that affects the value of a country's currency aside increased interest are:

(1) Political stability

(2) Economic stability.

(3) The demand for a country's goods and services.

(4) country's balance of trade between imports and exports.

5 0
3 years ago
Which of the following best describes an effective adaptation of plants commonly found in the rain forest?
Montano1993 [528]
Plants in the rain forest have unique adaptations to help them to thrive in the climatic conditions present there. Temperatures in the rain forest are high all year round. Since tropical rain forests are located around the equator they receive direct sunlight. The leaves of the plants here are waxy to protect them from the direct sunlight. 
Rain fall is high here and it can get up to 4000 mm per year. Leaves are equipped with drip tips to allow for the easy run off of water after a down pour.
The barks of most trees are also smooth to further facilitate the movement of water to the ground. The trees in the forest grow fast and compete with each other for sunlight. The trees grow very tall and very fast so they have specialized roots called buttress roots that can support them. These roots spread out to support tall trees. 
The dense vegetation of the forest prevents much plants from growing under the canopy of the trees. A small number of plant however can survive in this low light environment. The plant that grow under the canopy have large, dark green leaves to make use of the little light that passes through. 

8 0
3 years ago
A single zebrafish gene function was inactivated completely by mutation, and a zebrafish with this mutation had none of its norm
marissa [1.9K]

Answer:a. The normal gene function is required for the viability of the zebrafish.

Explanation:

It is mentioned that if the gene responsible for forming stripes on its body is inactivated by mutation then fish without stripes will produced.

This will lead to the absence of phenotypic character that is strips on the fish. The other genes which are responsible for the survival of the fish will function normally thus this will be untrue that normal functioning of the gene required for expressing horizontal strips is also necessary for the survival and viability of the zebrafish.

6 0
4 years ago
A scientist shines low levels of ultraviolet radiation on a dish containing colonies of ruby-red bacteria. He then makes several
Aleks [24]
He finds<span> that in</span>addition<span> to the </span>ruby-red color<span>, </span>there<span> are </span>also pink<span>, </span>orange, and yellowbacteria<span>.</span>
4 0
3 years ago
Read 2 more answers
Some lizards have different size legs. Lizards with longer legs have the
yaroslaw [1]

Explanation:

adaptation sounds like having longer legs

lizards that had longer legs had more access to food

so

they had more chances to mate

making kids with longer legs

7 0
3 years ago
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