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scoundrel [369]
3 years ago
8

Dr. Billings studies brain wave patterns that occur when people are dreaming. He attaches a device to the outside of people’s sk

ulls to measure electrical activity in the brain. What type of device is he using?
Biology
1 answer:
Oksi-84 [34.3K]3 years ago
3 0

Answer: the device is called an Electroencephalography machine.

Explanation:

An EEG or Electroencephalography is an electrophysiological monitoring method to record electrical activity of the brain.

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The miller-urey experiment was important because it showed __________.
mote1985 [20]
<span>The Miller-Urey experiment was one that produced several things, such as hydrogen cyanide, amino acids, adenine (among other nucleotides), and urea. The experiment proved that (c.) it was possible to form organic molecules from inorganic molecules. This explains why organic molecules were produced.</span>
8 0
3 years ago
Which of the following is not found in an observational study? A-controlled variable B-manipulated variable C-None of these are
Lunna [17]

Answer:

C-None of these are found in an observational study

Explanation:

(A.) controlled variables are a part of what's found in a controlled experiment. (B.) manipulated variables are a part of what's found in a controlled experiment. (C.) Answer choice A. or Controlled variables, Answer choice B. or Manipulated variables, and Answer choice D. or Control groups are a part of what's found in a controlled experiment. (D.) Control groups are a part of what's found in a controlled experiment. Therefor this only leaves one answer and that answer is Like I said C-None of these are found in an observational study.

8 0
3 years ago
explain why a circulatory system is important in meeting the needs of all cells throughout an animal's body
Katen [24]
With out it you cant breathe
8 0
3 years ago
Read 2 more answers
LAB: Acids and Bases
djyliett [7]

Answer:

There exists a fundamental distinction between two types of data: Quantitative data is information about quantities, and therefore numbers, and qualitative data is descriptive, and regards phenomenon which can be observed but not measured, such as language.

Explanation:

4 0
3 years ago
You sampled 1000 individuals from a population of mosquitoes to test whether they are in Hardy-Weinberg Equilibrium for a gene D
Marysya12 [62]

Answer:

The population is not following the Hardy-Weinberg equilibrium.

Explanation:

Hardy-Weinberg  proposed that the population will remain in the equilibrium if they are not affected with the external natural force like genetic drift, mutation and many others. The gene pool of a population will remain in equilibrium state for generations.

The mathematical expression for the Hardy-Weinberg are

Genotypic frequency is p²+q²+2pq=1

Allele frequency is p+q=1

where p-dominant allele,

q-recessive allele

Therefore,calculating expected frequency of allele q,

q² (recessive genotype)-  q²+2pq/1000

= 22+188/1000

=210/1000

= 0.21

q= 0.45

Calculating expected frequency of allele p,

Using p+q=1

p=1-q

p= 0.55 (expected)

Calculating observed value of frequency of p,

p²= p²+2pq/1000

= 790+188/1000

= 978/1000

= 0.978

p = 0.988 (observed)

Since the expected frequency does not match the observed frequency therefore the population is not under the Hardy-Weinberg equilibrium and the gene pool is disturbed.

4 0
3 years ago
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