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Assoli18 [71]
2 years ago
14

A manufacturing company dumps its wastes into a nearby pond. One of the wastes is found to paralyze the contractile vacuoles of

certain protists. A biologist looking at individual samples of these organisms taken from the pond would find that they
- have gained water and burst.
- have lost water and shrunk. have died of malnutrition.
- are surviving but are unable to reproduce.
- have died because wastes have built up in the cytoplasm.
Biology
2 answers:
KengaRu [80]2 years ago
7 0

Answer:

have gained water and burst.

Explanation:

Vacuoles are large vesicles originating from the endoplasmic reticulum and the Golgiense complex. They are membrane cell structures and are therefore typical of eukaryotic cells. They have selective membrane, like all cell membranes. Thus, the content inside the vacuole is different from the cytoplasmic content.

There are different types of vacuoles, but in protists it is common to have contractile type vacuoles, whose main function is to pump the excess water inside the cell out of it. This pumping of water ensures that the body maintains its ion and molecule concentrations in the desired amount and does not rupture. In addition, this vacuole is also responsible for excretion.

However, a manufacturing company has dumped its waste into a nearby lake, and this waste has the ability to paralyze the contractile vacuoles of certain protists. After an analysis, a biologist would see that the vacuoles gained excess water and burst.

vlada-n [284]2 years ago
4 0

Answer:

have died because wastes have built up in the cytoplasm

Explanation:

Contractile vacuoles are types of organelles found in protist that are used to discard waste from the organisms. Once this organelle is paralyzed, no waste will be removed thus leading to the acccumulation of the toxins in the system.

The organisms would not lose water or gain since there is a concentration difference between the internal and external environment; the external environment is polluted.

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Thiobacillus denitrificans is a species of bacteria that obtains its energy from carbon dioxide and inorganic compounds such as
tensa zangetsu [6.8K]

Answer:

The correct answer would be - nitrficiation, denitrification, nitrogen fixation, and decomposition.

Explanation:

Thiobacillus denitrification is a facultative, obligate chemolithoautotrophic anaerobic bacterium that is well known for its ability to couple the oxidation of inorganic sulfur-based compounds to denitrification.

The name of the bacterium is derived from its function or the metabolic ability as it performs denitrification on thio (sulfur) based inorganic compounds by the process of oxidation. This process helps in bioremediate groundwater by these processes of nitrogen fixation by oxidation of inorganic compounds of sulfur.

Thus, the correct answer is - nitrification, denitrification, nitrogen fixation, and decomposition.

7 0
2 years ago
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Who are the husband and wife depicted in these Byzantine mosaics, and what religious sacrament are they celebrating?
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Answer:

Byzantine art originated and evolved from the Christianized Greek culture of the Eastern Roman Empire; content from both Christianity and classical Greek mythology were artistically expressed through Hellenistic modes of style and iconography.

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2 years ago
What is the relationship between Endomembrane System, Insulin and Insulin Receptor, activation by phosphorylation, membrane-boun
mars1129 [50]

Answer:

The relationship between endomembrane system, insulin and insulin receptor, activation by phosphorylation, membrane-bound polyribosomes, and glucose transport channels is the eukariotic cell, because within it, they work together with the organelles to modify, summarize and transport lipids and proteins from the gut and absorb nutrients.

Explanation:

The Endomembrane system varies from membranes and organelles, but basically, it is structured by the nuclear envelope and lysosomes, the plasma membrane and several cytoplasmic organelles, as the ER, the Golgi apparatus, secretory granules, vesicles, lysosomes, endosomes, and the endoplasmic reticulum all working together to transfer, modify and package lipids and proteins macromoecules to the eukaryotic cell, from one part of it  to another, and from in to the outside of it also.

The membrane bound polyribosomes are attached to the cell endoplasmic reticulum. The bound ribosomes, used within the cell membrane or expelled from the cell by exocytosis, will produce insulin and they will become membrane bound to control the intake, protein modifications, fusion lipids and sugar breakdown. The insulin is a membrane bound polyribosomes protein synthesized in the ER, which travels along the endomembrane system. This hormone controls glucose and lipid metabolism  or energy function, if glucose level is high, insulin synthesis is activated.  

Synthesized and traveling through the endomembrane system, the insulin gets to its receptor called tyrosine kinase and activates it, phosphorylating and recruiting different substrate adaptors.

 The brand new insulin polypeptide chains go directly into the endoplasmic reticulum by the ribosome and then transported to where they are needed as insulin regulates sugar uptake into adipose tissue and skeletal muscle through glucose transport channels or glucose transporters GLUT4 within vesicles, which are directed to the plasma membrane, this is also the gut and nutrient absorption.

7 0
2 years ago
How does the author’s use of details convey her point of view about Eleanor Roosevelt’s life and legacy?
Vera_Pavlovna [14]

Author's use of details convey to Eleanor Rossevelt life and legacy are described below.

Explanation:

1.She advocated for expanded roles for women in the workplace, the civil rights of African Americans and Asian Americans, and the rights of World War II refugees. Following her husband's death in 1945, Roosevelt remained active in politics for the remaining 17 years of her life.

2.The fireside chats were a series of evening radio addresses given by U.S. President Franklin D. Roosevelt (known colloquially as "FDR") between 1933 and 1944.

3..President Theodore Roosevelt, an Oyster Bay Roosevelt, was the uncle of Eleanor Roosevelt later wife of Franklin Roosevelt. Despite political differences that caused family members to actively campaign against each other, the two branches generally remained friendly.

4.Champions of Human Rights. Eleanor Roosevelt (1884–1962)

  • Continuing her work on behalf of all people, she advocated equal rights for women, African-Americans and Depression-era workers, bringing inspiration and attention to their causes.

7 0
2 years ago
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cluponka [151]

Answer:

Option 4

Explanation:

Folate is vitamin B and occurs naturally in various food items such as green leafy vegetable, lentils, peas, beans, in fruits such as banana, melon, and enriched products such as bread, juices etc. Folate is essential for making up genetic material or DNA. Out of all given options, option 4 has both lentil and spinach (green leaves) which are rich source of folate. Option 1 has bread as a source of folate. Hence, the correct answer is option 4.

7 0
2 years ago
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