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2 years ago

Regulatory and basal transcription factors regulate transcription by binding to the promoter.A) True B) False

Biology

1 answer:

Licemer1 [7]2 years ago

4 0

Answer:

False

Explanation:

In eukaryotes apart from RNA polymerase, the transcription of genes requires many different proteins called transcription factors. These transcription factors are important to initiate and regulate transcription.

There are two types of transcription factors regulatory and basal transcription factors. Basal transcription factors regulate transcription by binding to a gene promoter and regulatory transcription factor regulates transcription by binding to some regulatory sequences for example enhancers and silencers.

Therefore only basal transcription factor binds to the promoter for regulating transcription. Therefore the statement is false.

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Part F

Tcecarenko [31]

Answer:

Wind power or wind energy is the use of wind turbines to generate electricity. Wind power is a popular, sustainable, renewable energy source that has a much smaller impact on the environment than burning fossil fuels

<h2>NOTE: <u><em>PLEASE MARK AS BRAINLIEST</em></u></h2>

7 0

2 years ago

All of the following protect the skin and mucous membranes from infection except

leva [86]

The question is incomplete. Th ecomplete question is as following:

All of the following protect the skin and mucous membranes from infection EXCEPT

A) multiple layers of cells.

B) tears.

C) saliva.

D) HCl.

E) the "ciliary escalator."

Answer: D) HCl.

Explanation:

The epidermis, the outer layer of the skin provides waterproofing and serves as a barrier to infection and other laers also sustain any type of injury.
Tears wash out foreign bodies which enter the eye. In addition, tears contain a substance called lysozyme which has an antibacterial function and works to prevent microbial invasion and infection.
Saliva protects against infection, especially via the innate immune system. This mechanism is an important first-line protection against bacterial and viral infection
The mucociliar escalator is within the conducting airways and is composed of mucus and cilia that transfer the mucus up and out of the lungs where it can be removed by coughing or swallowing,

Whereas HCL helps in the digestion process.

Hence, the correct option is D.

5 0

3 years ago

You examine a population of dividing cells with an electron microscope, and you see a large, floppy, circular string near the ce

Naddik [55]

Answer:

Binary fission

Explanation:

Prokaryotic cells do not have a nucleus. Binary fission is one of the methods of asexual reproduction in them. During the process, replication of circular DNA begins at the origin of replication and continues as the replication is bidirectional and the enzymes synthesize DNA in both directions.

As the replication comes to an end, the cell appear to have two circular DNA molecules entangled with each other. The septum grows towards the inner side as the chromosomes move toward opposite ends of the cell. This is followed by the formation of septum completely through the cell center, to make two separate cell chambers.

4 0

2 years ago

Rotenone is a poison commonly added to insecticides. Rotenone binds tightly with one of the electron carrier molecules in the el

S_A_V [24]

Answer:

The correct answer is A they will no longer be able to perform aerobic respiration.

Explanation:

Rotenone is an isoflavonid compound which act an inhibitor of electron transport chain in mitochondria.Rotenone generally blocks the transfer of electrons from from NADH CoQ dehydrogenase or complex 1 to ubiquinone.

As electron transport is blocked the reduced coenzymes such as NADH,FADH2 are unable to be oxidized.

As a result cells exposed to rotenone will no longer be able to perform aerobic respiration.

6 0

3 years ago

Amylose differs from amylopectin in that amylose ________. Amylose differs from amylopectin in that amylose ________.

MAXImum [283]

Answer:

Option A, Forms a helix and no branch points

Explanation:

As we know that amylose is a straight chain molecule, therefore it forms helix and consists of branching. This is the reason why amylose has no branch points.

However, amylopectin is a branched chain molecule polymer. The monomer unit in both amylose and amylopectin is glucose - D connected at 1, 4 carbon . The number of glucose molecules are higher in amylopectin than the amylose.

Hence out of all given options, option A is correct

6 0

2 years ago