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marishachu [46]
3 years ago
5

Which organism is NOT correctly matched to its energy source?A) chemoautotroph-NH³B) chemoautotroph - Fe²⁺C) photoautotroph - CO

₂D) photoheterotroph - lightE) chemoheterotroph - glucose
Biology
1 answer:
Rzqust [24]3 years ago
4 0

Answer:

C) photoautotroph - CO₂

Explanation:

Organisms are classified based on how they get (source) their energy and carbon. Autotophic organisms or simply autotophs are organisms capable of synthesizing their own food in form of organic molecules while heterotrophic organisms (heterotrophs) are not capable of synthesizing their food, hence they are dependent on other organisms for carbon source.

Autotophs can either be photoautotrophic or chemoautotrophic depending on whether they use light energy from sun or chemical energy from the oxidation of inorganic molecules e.g. Fe²⁺, as sources of energy respectively.

Also, Heterotrophs can either be photoheterotrophic or chemoheterotrophic depending on whether light from sun or chemicals from organic molecules like carbohydrates is used as source of energy respectively.

Hence, option C is wrong as photoautotrophs use light as source of energy not CO2. CO2 is rather a carbon source.

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The pathogenesis of adult respiratory distress syndrome (ARDS) involves which of the following? (Select all that apply.) Injury
borishaifa [10]

Answer:

Injury to the alveolar-capillary membrane  

Increased alveolar-capillary permeability  

Decreased lung compliance

Explanation:

Acute respiratory distress syndrome (ARDS) is a serious health problem that affects the lungs, which is caused by significative amounts of fluid that fill the air sacs. ARDS may be caused by distinct conditions such as, for example, pneumonia, sepsis, and traumatic injury. ARDS is a type of respiratory failure that results in decreased oxygen levels and increased carbon dioxide (CO2) concentration into the bloodstream.

4 0
4 years ago
A mutation occurred in the following DNA sequence AGCCTAGCC and the mutated form is now AGCCTTAGCC. Which of the following corre
Ilia_Sergeevich [38]

Answer:

Explanation:

1.A deletion mutation occurs when a wrinkle forms on the DNA template strand and subsequently causes a nucleotide to be omitted from the replicated strand.

2.This type of variant results in a shortened protein that may function improperly, be nonfunctional, or get broken down. An insertion changes the DNA sequence by adding one or more nucleotides to the gene.

3. A substitution mutation can cause the following: Change in the coding of amino acids codon to a particular stop codon resulting in an incomplete protein, which is usually non-functional. Can cause Silent mutations where a codon change can encode the same amino acid resulting in no changes in the protein synthesized.

4. when a premature nonsense or stop codon is introduced in the DNA sequence. When the mutated sequence is translated into a protein, the resulting protein is incomplete and shorter than normal. Consequently, most nonsense mutations result in nonfunctional proteins.

3 0
3 years ago
Rank these reactions from least to most energetically favorable.
mafiozo [28]

Answer:

From least to most energetically favorable, the reactions are:

Glucose to Glucose-6-P (least) ; Glucose-6-P to Fructose-6-P; ATP to ADP and Pi; PEP to pyruvate (most favorable)

Explanation:

ΔG represents the free energy change that occurs during a chemical reaction. A reaction with negative free energy change is exergonic and spontaneous. Negative free energy change represents the fact that reactants have more free energy than products. The excess of the energy is released during the reaction and makes it a spontaneous process.

q`On the other hand, a reaction with positive free energy change is endothermic and non-spontaneous. These thermodynamically unfavorable reactions are coupled with other exergonic reactions to make them occur.

Among the given example, PEP to pyruvate has the highest negative free energy change (−14.8 kcal/mol) and therefore, is energetically most favorable. On the other hand, "Glucose to Glucose-6-P" has the highest positive free energy charge (+3.3 kcal/mol) making it energetically the most unfavorable reaction.  

6 0
3 years ago
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LUCKY_DIMON [66]
D would be the answer
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