BIOLOGY HIGH SCHOOL

Which reaction occurs most rapidly at standard conditions?H2(g) + I2(s) 2HI(g)
Cu(s) + S(s) CuS(s)
C6H12O6(s) + 6O2(g) 6CO2(g) + 6H2O(g)
5C2O42-(aq) + 2MnO4-(aq) + 16H+(aq) 10CO2(g) + 2Mn2+(aq) + 2H2O(l)
Ag+(aq) + I-(aq) AgI2(s)

Answers

Answer 1
Answer:  I don't know of any way to determine the relative rates of reactions other than pretty much just guessing. Even with guessing, I can't decide between the last two. Both occur in solution and (if I recall correctly) both occur quite rapidly. I would guess that the last one, just a simple precipitation, would probably be the fastest. 

(NOTE: You have the wrong equation on the last one. It should be Ag+(aq) + I-(aq) --> AgI(s) There is no subscript on the iodide ion in AgI.)

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Whaat structure makes the windpipe stays open and able to bend

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Horseshoe-shaped rings of cartilage make the windpipe stay open, but able to bend

the diagram represents the functional unit of a nervous system. which structure secretes a neurotransmitter

Answers

The structure that secretes the neurotransmitter is the synapse. The synapse is where these neurotransmitters are located. Neurotransmitters are organic chemicals formulated by the nerve cells which enables and triggers some behavioral and cognitive, even emotional dispositions. These are activated according to specific function.  

Which statement accurately describes the relationship between the brain and addiction?A. Normal activities produce heightened responses once receptors are reduced.   B. A higher amount of addictive chemicals are needed to get the same high when fewer receptors are present.   C. The brain reacts to excessive dopamine levels by increasing the number of dopamine receptors.   D. All drugs act on dopamine synapses in the same way.

Answers

 C. The brain reacts to excessive dopamine levels by increasing the number of dopamine receptors. 

The statement accurately describes the relationship between the brain and addiction. There is a significant link between neurotransmitters and its influence on the activity and the emotion that we feel towards that set of activity. When there is an abnormal or disoriented amount of neuro-chemicals then it would cause some dysfunctional responses on the activity. 

What body systems are interacting to produce this work of art? Name the body system and describe its role in performing the task.

Answers

Answer:

The skeletal system

Explanation:

The skeletal system makes up the framework of the body and allows us to move when our muscles contract. It stores minerals (e.g. calcium, phosphorous) and releases them into the body when they are needed. The skeletal system also protects internal organs and produces blood cells. It is this skeletal system responsible for interacting to produce this work of art

What must happen for a solar eclipse to occur?a)The moon must pass behind Earth.
b)The moon must be full.
c)The moon's orbit must cross the plane of the ecliptic.
d)The moon's orbit must not cross Earth's penumbra.

Answers

The best answer to the question stated above is letter  C.The moon's orbit must cross the plane of the ecliptic.

>>Solar eclipses happen when the Moon moves between Sun and Earth, blocking the Sun's rays and casting a shadow on Earth.
>>Solar eclipses can happen only during a new Moon.
>>Earth's orbit is called the ecliptic plane as the Moon's orbit must cross this plane in order for an eclipse (both solar as well as lunar) to occur

The moon's orbit must cross the plane of the ecliptic for a solar eclipse to occur. The correct option is C.

A solar eclipse takes place when the moon passes between the sun and the Earth, causing the sun to be partially or fully obscured from certain locations on Earth.

For this alignment, the moon's orbit must intersect the plane of the ecliptic, which is the imaginary plane defined by Earth's orbit around the sun.

During a solar eclipse, the moon casts a shadow on the Earth's surface, blocking or partially blocking the sunlight.

This can result in a total solar eclipse, where the sun is completely covered, or a partial solar eclipse, where only a portion of the sun is obscured.

Thus, the correct option is C.

To know more about the Solar eclipse, click here:

brainly.com/question/12075389

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The Krebs cycle takes place within the:A. mitochondria
B. lysosome
C. vacuole
D. cytoplasm

Answers

Answer: A. mitochondria

Explanation:

The Krebs cycle is the set of reactions that drives to the complete oxidation of glucose. This occurs in the matrix of eukaryote mitochondria and the prokaryotyc cytoplasm. The main reagents of the Krebs cycle are acetate in the form of acetyl-CoA, water, and electron carriers. The main reagents of the Krebs cycle are acetate in the form of acetyl-CoA, water, and electron carriers. Reactions are catalyzed by enzymes where decarboxylases stand out (decarboxylation catalysts) and dehydrogenases (oxidation-reduction catalysts) leading to the formation of NADH).
The Krebs cycle occurs in the mitochondrial matrix (mitochondria) and generates a pool of chemical energy (ATP, NADH, and FADH2) from the oxidation of pyruvate, the end product of glycolysis. 
Hope this helps!
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