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hjlf
2 years ago
14

Which of these best describes fossils ?

Biology
2 answers:
lara31 [8.8K]2 years ago
6 0

Answer:

C

Explanation:

jekas [21]2 years ago
6 0
The answer is c :).
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The __________ nervous system transmits messages about sight, sound, smell, taste, and tactile information.
Verdich [7]
The answer is THE SOMATIC NERVOUS SYSTEM. 
The somatic nervous system is part of the peripheral nervous system. It is major function is voluntary movement of the muscles and organs and reflex movement. During the processing of voluntary movement, sensory neurons which transmit information about sight, smell, sound, taste and tactile information carry impulses to the brain and the spinal cord.
3 0
3 years ago
Two parts of the Plasmodium erythrocytic cycle affect the human host in the follow ways. The________ is responsible for the clin
Lana71 [14]

Answer:

The answer to 1. is option a. asexual portion.

The answer to 2. is option b. sexual portion.

The answer to 3. Is option a. Mosquito

Explanation:

1. The asexual portion is the stage in the Plasmodium erythrocytic cycle where the parasite develops in the erythrocytes causing accumulation of waste and toxic substances which ultimately end up in the bloodstream when the infected cells lyse. These factors acts to produce the symptoms experienced in malaria.

2. During the sexual portion of the Plasmodium cycle spores formed in the human host are released into the bloodstream which is usually picked up by an uninfected female anopheles mosquito when it takes a blood meal.

3. An infected mosquito passes the sporozoites to a new human host when it takes a blood meal and the cycle starts all over.

3 0
3 years ago
Rotenone, a toxic compound isolated from plants, strongly inhibits the transfer of electrons from iron-sulfur centers in Complex
Darya [45]

Answer:

(A) It prevents electron flow from the iron-sulfur centers in complex 1 to the ubiquinone. Due to reduction in electron transfer rate, there is a decrease in the production of ATP which is dangerous for some insects and fish over time.

(B) It also prevents electron flow from cytochrome b to cytochrome c1 at the complex III which leads to QH2 accumulation. If oxidized Q is not present, these is alteration of electron flow and the production of ATP is altered.

(C) Rotenone only prevent electron transfer into the chain at Complex 1  but it does not affect electron transfer at Complex II. Although there is slow ETC, it does not stop completely. However, Antimycin A prevents the oxidation of QH2, the final electron acceptor crom complex I and complex II. Thereby, stopping the production of both ETC and ATP. It can be concluded that antimycin A is a more potent poison.

Explanation:

Rotenone prevents electron flow from the iron-sulfur centers in complex 1 to the ubiquinone. Due to a reduction in electron transfer rate, there is a decrease in the production of ATP which is dangerous for some insects and fish over time. Antimycin A also prevents electron flow from cytochrome b to cytochrome c1 at the complex III which leads to QH2 accumulation. If oxidized Q is not present, there is an alteration of electron flow and the production of ATP is altered. Antimycin A is more potent than rotenone.

7 0
3 years ago
Read 2 more answers
In your opinion which type of source will be most common in the future choose the following explain why
tiny-mole [99]

In my opinion, <u>natural gas</u> is a source that will be most common in the future. Considering that natural gas is a fossil fuel that is used as a source of energy for heating, cooking, and electricity generation. It is also used in stoves, ovens, clothes dryers, lighting fixtures and other appliances that are used and needed in everyday life. Imagine a life without natural gas. We wouldn't be able to heat our homes, cook our food, etc.  

7 0
3 years ago
2 parents one with AB blood type and one with b type can they produce a child with A blood type
noname [10]

Answer:

No they can not produce a child with a blood type

5 0
2 years ago
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