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laiz [17]
3 years ago
8

Is this statement true or false?

Biology
2 answers:
Helga [31]3 years ago
6 0
All organisms do have a closed circulatory system 
so A <span />
Verizon [17]3 years ago
5 0

Its A (do we both use k 12)


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What is the purpose of the uninoculated control tubes used in the oxidation fermentation test? why is it necessary to use two co
Vitek1552 [10]

<u>Answer</u>:

1. The purpose of the uninoculated control tubes used in the oxidation fermentation test is to serve as basis of the medium for the color comparison and that it is sterile.

2. It is necessary to use two controls in order to illustrate the no color change (green color) under both aerobic and anaerobic conditions.

3. The purpose of the experiment is to determine if the organisms utilize the carbohydrate and thus is fermentative. This will result in a color change from green to yellow.

Thus, the medium in one tube is sealed with a layer of paraffin to prevent diffusion of oxygen.  This tube will show that the medium is unaffected by the lack of oxygen.

The second tube will allow the diffusion of oxygen. This tube will show that the medium does not change color naturally in the presence of oxygen. Thus, the color changes will be caused only by the fermentation process of the organisms.

7 0
3 years ago
The disease called branched-chain ketoaciduria is commonly known as maple syrup urine disease, as the urine of a person with the
rosijanka [135]

Answer:

Recessive

Explanation:

A recessive disorder is expressed in a homozygous genotype only. Most of the recessive disorders are not expressed as the expression of the recessive allele is masked by a dominant allele in the heterozygous state. However, breeding between close relative (inbreeding) increases the homozygosity in the population and allows the expression of recessive alleles that were otherwise not expressed in the population.

According to the given information, the disease is rare and is mostly expressed in the progeny obtained by mating between closely related individuals (the first cousins). Therefore the disease is inherited in an autosomal recessive pattern.

8 0
2 years ago
Put these in order from smallest to largest: neuron, cell, synapse
vladimir1956 [14]

Answer:

, cell, Synapse,  Neuron,

Explanation:

6 0
2 years ago
Read 2 more answers
3 meters = how much millimeters
UNO [17]
There’s one hundred centimeters in one meter, and one thousand millimeters per meter.
that being said, 3000 mm are in 1 meter
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3 years ago
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The greek physician hippocrates set ethical standards for doctors. <br> a. True <br> b. False
beks73 [17]
The answer is B.false
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3 years ago
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