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inysia [295]
3 years ago
9

What are good websites to study for biology?

Biology
2 answers:
Andru [333]3 years ago
7 0
Khan Academy is great! Also, Alison (it's a website) has some free courses as well.
boyakko [2]3 years ago
4 0
I would try Khan Academy.  I use it for Algebra and it's great, and it has all other subjects as well! :)
I hope this helps!

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For a science fair project, two students decided to repeat the Hershey and Chase experiment, with modifications. They decided to
Reptile [31]

Answer: E. Amino acids (and thus proteins) also have nitrogen atoms; thus, the radioactivity would not distinguish between DNA and proteins.

Explanation:

The Hershey-Chase experiment, is an experiment that demonstrated that the genetic material of phage isn't protein but rather it's DNA.

Based on the information given in the question, the experiment will not work because amino acids (and thus proteins) also have nitrogen atoms; thus, the radioactivity would not distinguish between DNA and proteins.

Therefore, the correct option is E.

4 0
3 years ago
if a pure breeding brown coloured rat BB is crossed with a pure breeding white rat bb, using the diagram only show the genotype
muminat

F2 generation genotype: BB,2Bb,bb

5 0
2 years ago
Read 2 more answers
Adult tickets for the school musical sold for $3.50 and student tickets sold for $2.50. On a given night, 321 tickets were sold
nalin [4]

Answer:

total amount spent on student ticket = 186($2.5)=$465.00,

Total amount spent on adult tickets = 135($3.5)=$472.50

Explanation:

cost total = student ticket price (x) + adult ticket price (321 - x)

$937.50 = (2.5)(x) + (3.5)(321 - x)

$937.50 = 2.5x + 1123.5 - 3.5x

x = 186, therefore 186 student tickets sold,  

(321-x) = 321-186 = 135, therefore 135 adult tickets were sold.

total amount spent on student ticket = 186($2.5)=$465.00,

Total amount spent on adult tickets = 135($3.5)=$472.50

So the total amount spent on tickets was  

$472.50 + $465.00 = $937.50

8 0
2 years ago
Help! my mom said im grounded if I don't get a good grade
wel

Answer:

I think c

Step-By-Step equation

sorry if u get it wrong i tried my best

5 0
3 years ago
A researcher places dogs in a cage with metal bars on the floor. the dogs are randomly given electric shocks and can do nothing
kifflom [539]

The answer choices to this question are:

<span>a.       </span>Learned helplessness.

<span>b.      </span>Stimulus discrimination. 

<span>c.       </span>Aversive conditioning. 

<span>d.      </span>Vicarious learning.

The best answer choice is:

<span>a. </span>Learned helplessness

<span>Explanation: Learned helplessness was studied by Seligman as a potential animal model of depression. Learned helplessness occurs when people or animals feel helpless to avoid negative situations. Martin Seligman first observed learned helplessness when he was doing experiments on dogs. He noticed that the dogs didn't try to escape the shocks if they had been conditioned to believe that they couldn't escape.</span>

4 0
3 years ago
Read 2 more answers
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