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mash [69]
3 years ago
13

Imagine carefully weighing a metal can, leaving it out in the rain for weeks and weeks until it was very rusted, and then carefu

lly weighing it again. Would the can be heavier or lighter after it was rusted?
Biology
1 answer:
Doss [256]3 years ago
3 0

Answer:

heavier! ( depends what type of metal can)

Explanation:

Rusting has to do something with corrosion and involves oxygen.So basically, when oxygen is added to the system process, this what makes the metal can become heavier.

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What is sexual and asexual reproduction
Sladkaya [172]

Answer: asexual reproduction is when an organism can reproduce without the need of another unlike sexual reproduction

Explanation: sexual reproduction happens when two organisms reproduce together giving the offspring 50% of each organisms DNA--

asexual reproductions is more like the organism replicating itself because the offspring has 100% of its DNA making it the exact same

8 0
2 years ago
Read 2 more answers
The ara operon is controlled by a regulator protein that exerts ________.
goblinko [34]

AraC protein certain to the ara operator works as a repressor that avoid transcription of the same ara operon and the araC gene AraC protein is an activator in the presence of arabinose and repressor in the absence of arabinose -With arabinose absent, the AraC protein stays as
a homodimer. One AraC protein put together to the ara initiator and the other protein now binds to a different regulatory site in DNA called the ara operator.

7 0
3 years ago
How many phenotypes are possible for monohybrids
fomenos
Aa x Aa= AA, Aa, aa. 2 phenotypes
7 0
3 years ago
The most important factor that determines the percent of oxygen saturation of hemoglobin is
erik [133]

Answer:

This question lacks options, options are:

a) The partial pressure of oxygen

b) Acidity

c) The partial pressure of carbon dioxide

d) Temperature

e) BPG

The correct answer is a. The most important factor that determines the percent of oxygen saturation of hemoglobin is <u>The partial pressure of oxygen </u>.

Explanation:

Hemoglobin is an oxygen transport protein. Partial Oxygen Pressure (PaO2), measures the pressure of dissolved oxygen in the blood, that is, it shows how well oxygen passes from the lungs into the bloodstream. A high partial pressure of oxygen in the blood produces an almost complete saturation of hemoglobin, which indicates the maximum amount of oxygen that combines, but when PaO2 is reduced, so is hemoglobin saturation, when saturation is below 90% hypoxemia occurs, that is, the level below normal blood oxygen levels.

3 0
3 years ago
If the somatic cells of a dog contain 78 chromosomes, then after mitosis the new somatic cells would contain_____ chromosomes.
NeTakaya
There are
39
chromosomes in their haploid cells.
Explanation:
During meiosis I, the
78
chromosomes in a diploid cell line up at the equator of the cell. Note that the chromosomes have already replicated.
4 0
3 years ago
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