A neuron transmits information by the secretion of hormones.
a. True
b. False?

Answers

Answer 1

Answer: B. False
A neuron uses neurotransmitters to communicate

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As a scientist, you seek to prove that DNA is the hereditary macromolecule by replicating the Hershey-Chase experiment. You culture the lambda phage in heavy and light Cl (Cl-36 is heavy and radioactive - the most abundant is Cl-35, lighter and non-radioactive). You purify the phage from their growth media and infect the E. coli, where will you detect radioactivity?Select one:
a. Within the E. coli pellet as the DNA has entered the bacterial cells.
b. On the E. coli cell surface (or phage fraction), as part of the phage protein coat.
c. In the supernatent (free liquid) of your test tube
d. Both A and B
e. None of the above
Why is the answer none of the above? Why cant the radioactivity be detected?

Answers

Answer:

The correct answer is option e. "None of the above".

Explanation:

The Hershey-Chase experiment helped to prove that DNA was the genetic material, by specifically labeling the DNA material of a bacteriophage with phosphorus-32. In this experiment the lambda phage is labeled with heavy and light Cl. CI-36, the one that is heavy and radioactive, corresponds to Chlorine-36. Chlorine is not an element found in DNA such as phosphorus, therefore lambda DNA will not be labeled and no radioactivity will be detected.

Why is a uranium isotope often used rather the 14C in radiometric dating to determine the age of Earth?

Answers

because it gives a accurate age of rocks and other things found in the earth

Answer:

carbon 14 half life is in the thousands of years while uranium is many millions of years

Classification activity

Answers

classification of what?

Answer:

Classificaton of wat

Explanation:

America: Love it or leave it!The flawed logic in this statement is an example of

A. slippery slope
B. hasty generalization
C. post hoc
D. false dichotomy

Answers

I think the correct answer from the choices listed above is option D. The flawed logic in this statement is an example of a false dichotomy. It is also referred to as false dilemma which involves having two opposite views in such a way that they seem to be the only possibilities.

Answer:

D. false dichotomy

Explanation:

Just took the test and this is the correct answer

Number 13 - which choice is the correct answer?

Answers

think it's number three

number 3 or number 4 but probably number 3

Which group of substances is arranged in order of decreasing specific heat values?

Answers

Final answer:

The specific heat values of different substances can be arranged in order of decreasing specific heat.

Explanation:

The specific heat of a substance is the amount of heat energy required to raise the temperature of a given mass of that substance by a certain amount. The specific heat values of substances can vary, so they can be arranged in order of decreasing specific heat.

Water has a high specific heat and iron has a low specific heat, which means it takes longer for water to heat up or cool down compared to iron. Other substances can also be arranged in order of decreasing specific heat based on their specific heat values.

For example, if we compare different gases, we can arrange them in order of decreasing specific heat values. The specific heat of nitrogen (N₂) is lower than that of oxygen (O₂), and the specific heat of oxygen is lower than that of carbon dioxide (CO₂).

Learn more about specific heat here:

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Answer: which group of substances is arranged in order of decreasing specific heat values? liquid water, ice, water vapor. The minerals talc, muscovite mica, quartz, and olivine are similar because they? contain silicon and oxygen. (Rock Picture) -composed of visible crystals of mica, quartz, and feldspar.

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A pond near a city park is found to be contaminated with both bacteria and excess nitrogen. The bacteria most likely came from _____, and the excess nitrogen most likely came from _____.