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viva [34]
3 years ago
10

In food chains, the flow of energy is always

Biology
1 answer:
gtnhenbr [62]3 years ago
6 0

Answer:

One-Way

Explanation:

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What do scientists know about fossils found in deeper layers of rock compared to
shusha [124]

Answer:

They know that layering, or bedding, is the most obvious feature of sedimentary rocks.  This Law of Superposition is fundamental to the interpretation of Earth history, because at any one location it indicates the relative ages of rock layers and the fossils in them. Layered rocks form when particles settle from water or air. That is kinda easy :D

Explanation:

7 0
3 years ago
Is the binding of a transcription factor to its dna recognition sequence necessary and sufficient for an initiation of transcrip
hram777 [196]

Transcription factors are necessary for an initiation of transcription at a regulated gene but not sufficient.

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 Transcription factors can enhance the interaction between RNA polymerase and a DNA sequence- promoter, encouraging the expression of the gene. Such transcription factors are called activators. Otherwise, when the gene expression is inhibited, factors are called repressors and they bind to sequence –operator.

• 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

6 0
3 years ago
Suppose that RNA polymerase was transcribing a eukaryotic gene with several introns all contained within the coding region. In w
Elenna [48]

Answer: synthesize a pre-rRNA 45S (35S in yeast), which matures and will form the major RNA sections of the ribosome. RNA polymerase II synthesizes precursors of mRNAs and most snRNA and microRNAs. RNA polymerase III synthesizes tRNAs, rRNA 5S and other small RNAs found in the nucleus and cytosol.

Explanation:

3 0
3 years ago
The eyes and nose of the crocodile are set on top of it's head to allow it so to see and breathe while keeping most of it's body
azamat

Answer:

The most fitting answer would be B.Adaptations to fit a location

Explanation:

Hope this helps! If this is incorrect, I am truly sorry.

3 0
2 years ago
The density of gas particles in a section of Earth’s atmosphere decreases. Which of the following is the most likely explanation
aalyn [17]

Answer:

<em>A. The air pressure in that section of Earth’s atmosphere decreased. </em>

Explanation:

In the free air, the density of the air diminishes as the air is warmed. On increasing the pressure, the density also increases. The air is packed. The density increments as pressure increments.

The thickness and density of air decline with the increase of height because of that the surface area of the Earth's climate diminishes with increase in height, along these lines gas particles can spread out.

The density of the air is most minimal at a high rise on a hot day when the pressure of the atmosphere is low.

7 0
3 years ago
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