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iris [78.8K]
3 years ago
6

Rotenone is a poison commonly added to insecticides. Rotenone binds tightly with one of the electron carrier molecules in the el

ectron transport chain, preventing electrons from passing to the next carrier molecule. Insects exposed to rotenone will die because
they will no longer be able to produce adequate amounts of ATP. T/F
Biology
1 answer:
Scorpion4ik [409]3 years ago
7 0

Answer:

True.

Explanation:

Rotenone is a broad spectrum pesticide and insecticide and is also considered as a non-selective piscicide.

The action mechanism of the rotenone has been described below -

It interferes with the electron transport chain which occurs in mitochondria of the cells. Here the transfer of electrons from complex I to the ubiquinone is inhibited by the rotenone. As a result, ATP formation with the help of NADH is also inhibited. When electron transport fails, oxygen in the cell is reduced to oxygen radical which further damages DNA and other components present in the mitochondria.

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What are the 4 phases of Mitosis?
lozanna [386]

Answer:

During mitosis, when the nucleus divides, the two chromatids that make up each chromosome separate from each other and move to opposite poles of the cell. ... Mitosis actually occurs in four phases. The phases are called prophase, metaphase, anaphase, and telophase.

Explanation:

I hope this helps :))

(This is from google)

7 0
3 years ago
Which of the following processes would have the quickest impact on the shape of beaches?
Rufina [12.5K]

Answer:

I don't know the options but my best guess would be erosion. Every time water comes on the beach is takes sand which erodes the beach. Hope that helps!

6 0
3 years ago
Although the cause of Parkinson's disease is unknown,research indicates that it may be due to defective nuclei in the cells of t
o-na [289]

Answer:

<u>Nervous System</u> could be studied as a direct result of having defective nuclei and may shed light on the  cause of Parkinson .

Explanation:

<u>PASRKINSON DISEASE -:</u> Parkinson's disease is a progressive nervous system condition. Several regions of the brain are affected by the condition, especially an area called substantia nigra that regulates balance and movement.

A trembling or shaking (tremor) of the limb is often the first sign of Parkinson's disease, particularly when the body is at rest. Typically, on one side of the body, the tremor starts, usually in one hand. The head, legs , feet, and face can also be affected by tremors. Other hallmark symptoms of Parkinson's disease are rigidity or rigidity of the limbs and body, slow movement (bradykinesia) or inability to move (akinesia), and impaired balance and coordination (postural instability).

Emotions and thinking ability (cognition) can also affect Parkinson's disease. Psychiatric disorders such as depression and visual hallucinations are created by some affected persons. There is also an increased risk of developing dementia in people with Parkinson's disease, which is a loss in intellectual functions, including judgment and memory.

Hence , the answer is <u>the nervous system and other regions of brain</u> where the disease has a direct result of having a defective nuclei and may shed light on the cause of Parkinson .                      

7 0
3 years ago
Populations evolve for many reasons. Suppose there is a population of plants that have either purple flowers or white flowers, a
sattari [20]

Answer: natural selection

Explanation:Natural selection, gene flow, gene drift and mutation are the mechanisms for EVOLUTION.

The dominant purple allele must have been acquired from previous parent gene, by natural selection

Definitely the available   alleles from previous flower population were white and purple flowers. But, because the parents of purple flowers exhibit VARIATION, in their gene pool,  they showed dominance over  the recessive white colour flowers in the same population.  

◼ from Darwin’s observation and deduction, Organisms who acquired certain characteristics from variation  tend to survive than others, and therefore pass these inheritable characteristics to their offspring.

◼Thus the purple flowers dominated the population for the available resources, among the other flowers colours, (competitions) therefore it leads to a stable population in size after a period of time., while the white colour flowers are recessive

◼Darwin concluded that, variants of best adaptation will be selected for by natural conditions operating in the environment of the population at that particular period (natural selection).

Based on this, natural selection takes place, and the purple flowers with best variation will have selective advantage (dominance)above white colour flowers(recessive).

Consequently, they have higher survival rates compare to white flowers in the population this is   survival of the fittest by natural selection of purple flowers

The frequency of the white colour flower will reduced because of less manifestation of traits from generation to generation from reduced gene pool due to recessive trait, however the frequency of Purple flower will increase because the number of copies of allele of purple flowers is greater than the total number of all the flowers population( white flowers+purple)

5 0
3 years ago
Choose the group that is in order from less specific traits to more specific traits:
sergejj [24]

The answer is B, I'm pretty sure.

6 0
3 years ago
Read 2 more answers
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