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Vladimir [108]
3 years ago
5

What is the proper way to smell a substance in a lab?

Biology
2 answers:
Illusion [34]3 years ago
7 0

Gently waft the air with your hand instead of sniffing it directly.

stiks02 [169]3 years ago
6 0

Don't, that's dangerous

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What does a plant need for photosynthesis?
jonny [76]
A plan needs the sun and Carbon Dioxide
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One of the questions early geneticists had to answer was how only four nucleotides can specify placement of 20 amino acids in pr
jenyasd209 [6]

Answer:

<h2>Codon </h2>

Explanation:

The sequence of DNA is transcribed into mRNA, containing the sequence  for protein synthesis, protein is synthesized according to the codons in mRNA.  This sequence of nucleotide on DNA/ RNA is divided into a series of three nucleotide units, and one unit of three nucleotide is  known as codons.

There are overall 64 codons, 61 codons out of 64 codons, codes for overall 20  amino acids, and the remaining three  are stop codons.

These there codon do not code for any amino acid.

And these 61 codons, they  code for total 20 amino acids. So one amino acid can be coded by one or more than one codons.

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Ovules produced by an entirely green plant contain a rare mutation in a nuclear gene that is involved in chlorophyll synthesis,
sveticcg [70]

Answer:

The plant will produce less chlorophyll

Explanation:

The plant still has a functional allele provided by the paternal gamete, thereby the leaves have this enzyme required for chlorophyll biosynthesis. In consequence, the plant can produce chlorophyll pigment but in less quantity, since it has only a functional allele coding for a key enzyme involved in the chlorophyll pathway  

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3 years ago
What controls the characteristics of an organism? A. RNA B. allele C. protein D. DNA
Genrish500 [490]
The DNA controls the characteristics of an organism. I
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An adult female client describes the pain in her hand as having an audible grinding and cracking sound, especially in her thumb
slamgirl [31]

Answer: The correct answer to the question is option C

OSTEOARTHRITIS.

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In a healthy joint,a protective cartilage cushions the end of bones(articulating bones) and as well acting as a shock absorber.

In osteoarthritis,these cartilage that acts as a cushion to the bones wears down down or generates with time exposing the joint and the bones predisposing them to mild to moderate friction that occurs as a result of mobility of the bones/joint.

Osteoarthritis mostly affect joints of the hips, hands,spine and knees.

Some of the common symptoms of Osteoarthritis are;pain in the joints of the hands,knees,hips,lower back and neck with crackles,stiffness and tenderness of the joints which often results to difficulty in walking and deformity of the joint if left untreated.

7 0
3 years ago
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