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Mkey [24]
4 years ago
11

Dead Echinoderms are naturally recycled to make which product?

Biology
2 answers:
adell [148]4 years ago
7 0
Water and oxygen gas
jarptica [38.1K]4 years ago
6 0

Answer:

Calcium Carbonate CaCO³

Explanation:

All echinoderms possess a calcitic exoskeleton this structure is manly built of calcium carbonate which is a crucial compound for the development of different animals such as corals and other. Hence if they died after decomposing the material will slowly dissolved back into the ocean

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Chicken liver is placed into lemon juice for 10 minutes. What type of evidence of a chemical reaction would be expected to occur
sladkih [1.3K]

Answer:

When hydrogen peroxide is added to a chicken liver sample exposed to lemon juice the chemical reaction will be slower and appear some bubbles within the first minute (option B).

Explanation:

The liver contains an enzyme called catalase, whose function is the degradation of hydrogen peroxide (H₂O₂), an intense reaction that produces gas and heat. <u>The activity of this enzyme must occur at an appropriate pH, so changes in pH can affect the activity of catalase</u>.

  • Under normal conditions, when a liver sample is exposed to H₂O₂, bubbles and foam appear in the sample as a result of the catalase reaction.
  • When the chicken liver sample is subjected to the acidic lemon juice, the reaction will occur, but more slowly.

This is because the activity of the catalase enzyme, present in the liver, continues to occur —although it decreases— and will form few bubbles over a longer period of time.

The other options are not correct because:

<em>     A. At a lower pH, the reaction will not form many bubbles. </em>

<em>     C. Even if the reaction is minor, and produces very few enzymes, it will always occur. </em>

<em>     D. Although the catalase/H2O2 reaction produces heat, it is impossible for the liver to catch fire and cause evacuation from the school, even less so with a reaction whose speed has been slowed down.</em>

3 0
3 years ago
Based on the article “Will the real atomic model please stand up?,” why did J.J. Thomson experiment with cathode ray tubes? to s
Paladinen [302]

Answer:

to determine that electric beams in cathode ray tubes were actually made of particles

Explanation:

just did it;)

5 0
3 years ago
How does cell differentiation relate to gene expression.
Vilka [71]

Cell differentiation is how generic embryonic cells become specialized cells. This occurs through a process called gene expression. Gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a cell functions.

3 0
3 years ago
A depression in the ground due to a cave collapse or acidic water dissolution of limestone is called a
SpyIntel [72]
This would be called a D. Sinkhole. Sinkholes occur because groundwater washes and deteriorates at limestone under the surface. This leads to underground gaps. Once the pressure becomes high enough, the sinkhole collapse from gravity leaving a dent similar to potholes in the road.
7 0
4 years ago
Organisms are made up of cells ?<br>​
kenny6666 [7]

Answer:

Yes!

Explanation:

It is stated in the Unified Cell Theory by a Botanist named Schleiden and a Zoologist named Schwann that all Living Things (organisms) are composed of 1 or more cells. The cell is the basic unit of life.

5 0
3 years ago
Read 2 more answers
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