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Alja [10]
3 years ago
15

How many variables are changed in a controlled experiment

Biology
1 answer:
Snowcat [4.5K]3 years ago
8 0

Answer:

One

Explanation:

In a controlled experiment only one variable is changed at a time, while the others are kept the same/controlled so changes can be observed and a causation can be determined.

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Dead zones in waterways can occur as the result of fertilizer runoff.<br> T/F<br><br>True
Alja [10]
It is true that dead zones in waterways can occur as the result of fertilizer runoff. 
8 0
3 years ago
Read 2 more answers
What components of the introns of nuclear genes that encode proteins in higher eukaryotes are conserved and required for the cor
leonid [27]

Answer:

The introns of protein-encoding nuclear genes of higher eukaryotes almost invariably begin (5') with GT and end (3') with AG. In addition, the 3'subterminal A in the “TACTAAC box” is completely conserved; this A is involved in bond formation during intron excision.

3 0
3 years ago
Which of the following would NOT increase (whole body) oxygen consumption during recovery from exercise and increase excess post
Harrizon [31]

Answer:

(B) None of the answers are true...

Explanation:

(A) is wrong because the high levels of epinephrine promote activation of sympathetic nervous system that'll ultimately increase oxygen consumption.

(C) Elevated temperatures of body require immediate cooling that's why breathing rate gets high and ultimately the oxygen consumption.

(D) We all know that a vigorous dose of exercise always increases your bodies oxygen consumption.

3 0
3 years ago
If a DNA molecule has 24% adenine, what is the percentage of guanine in the same DNA molecule?
artcher [175]

Answer:

26%

Explanation:

Adenine pairs with thymine.

Guanine pairs with cytosine.

If 24% of the DNA molecule is adenine, that means that there is 24% thymine. This is because they pair together so they have to be equal. That is 48% of the DNA molecule. To find the percentage of guanine, we need to minus 48% from the total 100%.

100 - 48 = 52

Then divide by 2 because you have guanine AND cytosine.

52/2 = 26

Therefore, your final answer is 26% of guanine is in the DNA molecule.

<em>I hope this helps!!</em>

<em>- Kay :)</em>

5 0
3 years ago
Filtrate is formed as fluid is forced through the walls of the glomerulus and
Goryan [66]

Answer:

initially, collects in the structure indicated by the letter B

Explanation:

Filtrate is formed as fluid is forced through the walls of the glomerulus and, initially, collects in the structure indicated by the letter B.

Urine formed by a kidney collects in the renal pelvis before being drained from the kidney by the urethra and transported to the urinary bladder.

The process by which glomerulus filtration occurs is called renal ultrafiltration. The force of hydrostatic pressure in the glomerulus (the force of pressure exerted from the pressure of the blood vessel itself) is the driving force that pushes filtrate out of the capillaries and into the slits in the nephron.

3 0
3 years ago
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