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goldenfox [79]
3 years ago
15

"When POPs move thousands of kilometers from their original source of release in a cycle is called: Select one: a. expansion eff

ect. b. grasshopper effect. c. dissemination effect. d. propagation effect."
Biology
1 answer:
FinnZ [79.3K]3 years ago
3 0

Answer:

b. grasshopper effect

Explanation:

Persistent Organic Pollutants or POPs are organic chemicals that cause a lot of damage to environment and living beings. They are generally industrial chemicals or pesticides for example, DDT. They are toxic and not degraded easily. They tend to get accumulated in living tissues and increase in concentration as we move upwards in a food chain.

When POPs are transported to areas far from their original site, the phenomena is called as grasshopper effect. They are carried by wind in atmosphere and finally settle down on land from where they evaporate again to enter the atmosphere. Thus, the cycle continues. Eventually, they can reach to an area thousands of kilometers away from their original source.

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Claudette has an fMRI and her doctor says that he notices that the gray matter has peaked in the part of her brain beneath the c
Alex Ar [27]

Answer:

Cerebellum

Explanation:

fMRI or Functional Magnetic Resonance Imaging is a technique used to map the activity in brain. It works on the principle that blood supply to an area in brain is increased when it is in use.

The area referred to by Claudette's doctor is cerebellum. It is located beneath the occipital lobe of cerebral cortex. It is involved in coordinating body movements and maintaining muscle tone. It also controls emotions, language and attention.  It is connected with the sensory information receiving zones of cerebral cortex from were it processes the information.

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3 years ago
Which of the following sequences is correct for the downhill movement of electrons during cellular respiration? A. glucose – cit
Volgvan

Answer:

B. glucose – NADH – electron transport – O2

Explanation:

This is the sequence  from glycolysis in which  glucose molecules are split down to pyruvate, to oxidative phosphorylation.

During this process the electrons are released from glucose  molecule as it is oxidised multiple times as pyruvate, and other molecules formed subsequently in Kreb's cycle, until the oxidative phosphorylation is reached .

The makes the  carrier molecules to be reduced.Thus NAD→NADH,FAD→FADH .

The electrons from above are  transferred in hydrogen atoms  to matrix by these co-enzymes.Where the H is split to electrons  and protons.

The electrons for the ETC, produce the PMF for transporting  protons into the intramembrane space.

The concentration of protons generated the electrochemical gradients  which is needed to produce energy for for phosphorylation of ADP with Pi to form ATP by ATpase synthase.

The electrons moves as chain,and this is finally accepted by oxygen as the final electron acceptor.

3 0
3 years ago
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True, as to why your doctor recommends you to eat more vegetables or go outside among other things to get more vitamins and stay healthy.
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I'm going to make an educated guess and say the answer is A. 
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