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V125BC [204]
3 years ago
12

Suppose that a substance in a beaker is heated over a burner in a science lab. Which observation would most likely indicate that

a chemical change has occurred in the substance?
A .If the substance is a liquid or solid, an increase in temperature would indicate a
chemical change.
B.If the substance is a liquid, a change of some of the liquid to gaseous form would
indicate a chemical change.
C. If the substance is a solid, a change of some of the solid to liquid form would
indicate a chemical change.
D.If the substance is a liquid or solid, production of an odor would indicate a
chemical change.
Biology
2 answers:
mel-nik [20]3 years ago
9 0

A .If the substance is a liquid or solid, an increase in temperature would indicate a
chemical change.
inn [45]3 years ago
5 0

Answer:

Explanation:

I think it’s D. Sorry if I’m wrong

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Why is is lt important to protect earths water,land,and,air recources?
ehidna [41]
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5 0
3 years ago
What is a trait?<br> what is a allele?
andriy [413]

Explanation:

an allele is an alternative form of a particular gene whereas a trait is the character that is determined by the allele.

7 0
2 years ago
Assuming that transcription and translation both proceed from left to right, which is the correct orientation of the DNA templat
aleksklad [387]

The correct answer is:

DNA template 3'– ……… –5'

RNA transcript 5'– ……… –3'

Protein product H2N– ……. –COOH

In nucleic acids, DNA and RNA 5’ end refers to phosphate group attached to the 5′ carbon of the ribose ring, while 3’ end refers to the ribose -OH substituent. Nucleic acids can only be synthesized in the 5′-to-3′ direction, which means that the DNA template is 3’—5’. Translation of the protein by the ribosome will also proceed in a 5′ to 3′ direction, which means that the mRNA template is 3’—5’.

The protein during the synthesis is extend from its N terminus toward its C terminus.

6 0
3 years ago
Which element matters least in the process of natural selection?
Lapatulllka [165]

Given question is incomplete as it lacks the group of choices. However, the group of choices associated with the question is as follows:

1. Organisms must display variation.

2. A trait must increase reproduction.

3. A trait must directly affect metabolism.

4. A trait must increase survival.

5. A trait must be able to be passed on to future generations.

Answer:

The correct answer is : option 3. A trait must directly affect metabolism.

Explanation:

The process that leads to change or adaption in the species or a population of the organism known as natural selection. In this process population exhibits the variation in the population due to the change or adaption.

This variation refers to the better traits and increased reproductive ability, suited to the environment than others which is also known as survival of the fittest as they increase their survival in comparison to the other population or species. Natural selection carries traits that are passed on to one generation to another.

Thus, the correct answer is option Is : 3. A trait must directly affect metabolism.

8 0
4 years ago
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