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Nuetrik [128]
3 years ago
13

What chemical begins the process of chemical digestion? A.stomach acid B.saliva

Biology
2 answers:
Bas_tet [7]3 years ago
4 0

Answer:

A.stomach acid

how it's helpful

Nata [24]3 years ago
3 0

Answer:

b. saliva begins the whole process

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What happens to RNA polymerase II after it has completed transcription of a gene? a. It begins transcribing the next gene on the
Over [174]

The correct answer is: b. It is free to bind to another promoter and begin transcription

Transcription is the first step of gene expression in which DNA molecule is copied (transcribed) into RNA (mRNA) by RNA polymerase. The process of transcription is divided into three phases:

1. Initiation

• RNA polymerase with transcriptional factors bind to gene promoter  

• RNA polymerase unwinds DNA double helix (transcription bubble is formed)

2. Elongation

• RNA polymerases adds nucleotides complementary to DNA  

3. Termination

• RNA polymerase gets to stop codon (transcribes a sequence of DNA known as a terminator)

• Formed complementary RNA strand is released from DNA-RNA complex.

RNA polymerase is also released and can transcribe some other gene by binding to its promotor. RNA polymerase will transcribe just the genes whose products are needed at a particular moment.

7 0
2 years ago
What type of behavioral adaptation is sleeping? Why?
nadezda [96]

Answer:

the behavioral adaptation of sleeping is called Hibenation

Explanation:

Hibernation is an adaptation that helps many animals conserve energy by remaining inactive, greatly slowing their metabolism and reducing their body temperature for days, weeks or even months at a time. specifically, animals hibernate in order to survive/live for  long periods when food is scarce.

5 0
3 years ago
Mining is a factor that affects the shape of Florida. Which products contain materials that are mined in the state? Check all
e-lub [12.9K]
The answer would be Cement,Bricks, and rock salt because in Florida they mine for hard materials
8 0
3 years ago
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The relationship between humans and their digestive bacteria can be described as... A) Commensalism B) Competition C) Mutualism
Flura [38]

Answer: The correct answer is -

C) Mutualism.

Explanation:

Mutualism is a type long term biological relationship between two organisms belonging to same or different species in which both are benefitted from one another.

For example - E.coli bacteria, present large intestines of human, gets food and place to live in our digestive tract. In return, the bacteria produce vitamin K, which make it harder for other disease causing bacteria to establish in our system.

Thus, option C) is the right answer.

7 0
3 years ago
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What is the image point of
ICE Princess25 [194]

Answer:

-31-{x}^{5}

−31−x  

5

 

Explanation:

1 Remove parentheses.

-31-{x}^{5}

−31−x  

5

 

7 0
3 years ago
Read 2 more answers
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