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Ahat [919]
3 years ago
5

(tco 1) isotopes of an element have the same number of _____ and different numbers of _____.

Chemistry
1 answer:
seropon [69]3 years ago
7 0
Protons and neutrons.  Hope this helps!!!
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Horns are recessive; hornless is dominant. How might this challenge our understanding
wel

Answer:

Please find the explanation below

Explanation:

Traits are physically observed features of an organism. They are coded for and determined by genes, which comes in two forms called ALLELE. Each allele is responsible for a particular phenotype that makes up a trait. A dominant trait is the one which is expressed over another in a heterozygous state i.e. combined state of the two different alleles that encodes the two different traits respectively.

In this question, having horns is a recessive trait while being hornless is a dominant trait. The two traits are encoded by different alleles of the same gene. When the two different alleles combine in the organism's genotype, the dominant trait (hornless) will express itself over its contrasting trait (horn), hence, the animal will be phenotypically hornless. The allele that encodes hornlessness is said to be the dominant allele while hornlessness is the dominant trait.

Note that, in this dominance inheritance pattern, the recessive trait i.e. horned, will only phenotypically be expressed when the recessive allele is homozygous i.e. same in the organism's genotype.

3 0
3 years ago
Work done by a system is positive or negative?
saul85 [17]
The internal energy has the symbol U. Q is positive if heat is added to the system, and negative if heat is removed;

....."W is positive if work is done by the system"........

and negative if work is done on the system.


So, work done by a system is positive.
6 0
4 years ago
What caused the bubbles to form when you added the catalase to the hydrogen peroxide and water mixture at 40 °c?
Dahasolnce [82]
<span>What caused the bubbles to form when you added the catalyses to the hydrogen peroxide and water mixture at 40 °C? A. Catalyses activity heated the solution to its boiling point. B. Hydrogen gas formed during the formation of hydrogen peroxide. C. Oxygen gas formed during the decomposition of hydrogen peroxide.

This would be the water, mixture.</span>
7 0
3 years ago
Read 2 more answers
How does igneous rock become metamorphic rock?
Setler [38]

Answer:

Your just in luck my friend we just finished learning about that.

Explanation:

Melting

7 0
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The correct answer is A
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