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mr_godi [17]
3 years ago
6

How is information from the field of embry ology used as evidence for evolution

Biology
1 answer:
Crank3 years ago
7 0
Embryology provides evidence for evolution because during their development, many organisms look similar, suggesting that very different organisms may have a common ancestor.
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If glucose is absent, but so is lactose, the lac operon will be ________.
umka2103 [35]

Answer:

Activated

Explanation:

In the presence of lactose, and in the absence of glucose, lactose will bind to a protein called a "repressor," deactivating it. Through this, RNA polymerase has a free way to synthesize the mRNA that will give enzymes for lactose degradation.

7 0
3 years ago
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The wood in a match is made of cellulose, a polymer of glucose molecules. when you light the match heat and light are given off,
slavikrds [6]

The wood in a matchstick is made of cellulose, a polymer of glucose molecules. When you light the matchstick, heat and light are given off, indicating that an exothermic reaction is occurring.

There are two types of reactions:

1. Exothermic reactions: In these reactions, the reactants combine to form product and heat is liberated. Example, burning of fuel.

2.Endothermic reactions: In these reactions, the reactants combine to form product and heat gets absorbed from the surroundings. Example, photosynthesis in plants where the energy of the Sun gets absorbed.

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3 years ago
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What two important factors determine the nature of an ecosystem?
Lelechka [254]
Temperature, and Humidity are the two important factors of an ecosystem 
4 0
3 years ago
When pam and brett begin a regular sexual relationship they agree that oral contraceptives make the most sense for them?
tankabanditka [31]
The answer;
 A combination pill

Explanation; 
Contraception entails methods that are used to prevent pregnancy. They include; hormonal methods, barrier methods and natural methods. A combination pill is a type of oral contraceptives that contain estrogen and a progestin. It keeps the ovaries of the female from releasing an egg. Different types of this pill contains different doses of estrogen and progestin.
3 0
3 years ago
18. RNAi is a technique that silences genes by targeting them and degrading their mRNA. How can this technique be used in scient
MrRissso [65]

Answer:

B

Explanation:

RNAi is a cellular mechanism for post-transcriptional gene silencing. After transcription of a gene into mRNA, small interfering RNA (siRNA) and microRNA (miRNA) can target the mRNA to form dsRNA. This mRNA then becomes a target of ribonucleases such as the Dicer that break it apart. These mRNA, therefore, do not reach the cytoplasm for translation by ribosomes. This mechanism is hence harnessed and manipulated by scientists to study genes by silencing them.

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3 years ago
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