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Margarita [4]
3 years ago
9

In an experiment on a new drug, subjects were randomly assigned to either a placebo or the active drug. In addition, the method

of delivery of the drug (pill, skin patch, or nasal mist) was considered. In this experiment, there were how many factors?
A. 1.
B. 2.
C. 3.
Biology
1 answer:
notka56 [123]3 years ago
4 0

Answer:

B. There are two factors

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What do the cell walls of plants and the extracellular matrix of animal cells have in common?
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Explanation:

What do the cell walls of plants and the extracellular matrix of animal cells have in common? They have functional connections with the cytoskeleton inside the cell.

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Can someone tell me the defination of science
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<span>the intellectual and practical activity encompassing the systematic study of the structure and behavior of the physical and natural world through observation and experiment.

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Mobombi had completed about a quarter of the distance in the marathon in which he was a participant. suddenly, he stumbled and f
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3 years ago
Superficial region around the renal medulla
nalin [4]

Answer:

Renal cortex

Explanation:

The renal medulla of a kidney is surrounded by renal cortex. The renal cortex is the granulated layer. It is the renal cortex in which the renal corpuscle (glomerulus and Bowman's capsule) are present. The renal cortex is reddish brown in color. This is due to the fact that most of the renal arteries deliver the blood to the cortex.

3 0
3 years ago
Describe the steps in transcription that require complementary base pairing.
nalin [4]

Answer:

Explanation:

Transcription takes place in nucleus in the presence of the enzyme RNA polymerase.

During transcription, the code present in DNA gets transcribed into the code in mRNA.  (messenger RNA)

RNA even though is a single stranded shows base pairing.

The pre-mRNA gets created from the DNA.

DNA has two strands, one of these strands acts as coding and another non coding strand.

The DNA shows base pairing with AGTC.   [A-Adenine, G- Guanine, T-Thymine and C- Cytosine]

Whereas mRNA base pairing with AGUC.  [ U- Uracil ]

Here in mRNA, instead of thymine, uracil gets paired.

According to base pairing of coding strand/sense strand of DNA, complementary bases pairs in 5'---->3' direction in mRNA.

The mRNA created looks exactly like the non-coding strand/sense strand of DNA except instead of thymine, uracil gets replaced.

The pre-RNA undergoes splicing, capping and tailing to form mature mRNA.

5 0
3 years ago
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