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Lostsunrise [7]
4 years ago
13

Why do sea urchins have spines (spikes)

Biology
1 answer:
olga nikolaevna [1]4 years ago
4 0

Answer:

they are used for protection, maneuvering, and to trap food for consumption

Explanation:The spikes of the sea urchin are used for protection, to move about, and to trap food particles that are floating around in the water.

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Which of the following best describes the main role of the electron transport chain in cellular respiration
Levart [38]

Answer: The correct answer is option (A) it produces molecules of ATP.

Explanation: The main role of the electron transport chain in cellular respiration is that it produces ATP molecules. Adenine tri phosphate (ATP) is a molecule of energy which is produced during oxidation reduction reaction. This energy is used in most of the chemical reaction that is occur inside the cell.

3 0
3 years ago
The tube leading from the bladder to the outside of the body is the:
-BARSIC- [3]
I believe it's called the urethra
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In many eukaryotic cells, DNA stored in the nucleus is transcribed into messenger RNA. The mRNA is then transported into the cyt
ki77a [65]

Answer:

The statement supported by the description of the process of protein synthesis determined by DNA and its packaging and sorted by the Golgi apparatus is that various organelles within a cell interact with each other to carry out life processes (option D).

Explanation:

From the transcription of RNA from DNA to protein synthesis and its packaging and distribution, the participation of organelles is observed:

  • <em>Cell nucleus</em><em>: contains the DNA and is where the transcription into mRNA occurs. </em>
  • <em>Ribosomes</em><em>: where the mRNA is coupled to produce translation and protein synthesis. </em>
  • <em>Rough endoplasmic reticulum</em><em>: contains ribosomes and participates in the process of membrane protein synthesis, also contributing to their conjugation, glycosylation or sulfonation. </em>
  • <em>Golgi apparatus</em><em>: it is in charge of receiving synthesized proteins, packaging and distributing them to be sent to the extracellular space or other cells. </em>

In this way, the coordination of the functions of various organelles is useful and necessary to fulfill vital functions. The statement that varoius organelles within the cell interact with each other to carry out life processes is, therefore, correct.

<em>The options for this question are:</em>

<em>     A.  Organelles within a cell act independently of each other at all times </em>

<em>     B.  Some organelles are more important than other organelles within a cell. </em>

<em>    C.  Only up to three organelles may interact with each other at any given moment in time. </em>

<em>    D.  </em><u><em>Various organelles within a cell interact with each other to carry out life processes.</em></u>

6 0
3 years ago
Major organs form and cells continue to divide in the __________ stage.
lubasha [3.4K]

Answer:

embryo

Explanation:

5 0
3 years ago
Read 2 more answers
Which scientific area is a major force in shaping modern classification methods
IgorC [24]
The writer could assert Taxonomy. Which is responsible for many scientific classifications and influences in various field of life sciences or biology.  Evidences that Taxonomy uses to group or categorizes species range from <span><span>
1.       </span>"Fossil Records</span> <span><span>
2.       </span>Comparative anatomy</span> <span><span>
3.       </span>Comparative embryology</span>
<span>4.       Biochemical information</span> <span><span>
5.       </span>Cellular structure</span> <span><span>
6.       </span>Behavior</span>"
We also suggest that taxonomy has played various roles mainly in many aspects in Zoology, Botany, Anatomy and Physiology –aspects that include animal and human structures and functions. As the biotic community is so diverse it is classified to Biodiversity and the existence of properly assorting by set standard.




8 0
3 years ago
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