transcription begins at a promoter. what is a promoter?

Answers

Answer 1

Answer:

A site in DNA that recruits the RNA Polymerase

Explanation:


Related Questions

True or false: Theoretically, it is possible (but very difficult) for a population to not evolve for a while.

Answers

It is true that it is possible for a population to not evolve for a while.

There is something called the Hardy-Weinberg theorem, which characterizes the distributions of genotype frequencies in populations that are not evolving.

There are 5 Hardy-Weinberg assumptions:

no mutation random mating no gene flow infinite population size and no selection (natural nor forced).

You can see that some of these are kinda extreme and really hard to get, but with approximations, we can work.

For example, instead of an "infinite population size" we have enough with a really large population, such that genetic drift is negligible.

Concluding, yes, it is possible (but really difficult) for a population to not evolve for a while (at least, in nature), as long as the 5 assumptions above are met.

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Identify the mutation below that would be passed on to a living, fertile offspring if it happened in a parent.(1 point)

DNA replication errors that take place in somatic, or body, cells that are repaired by the cell

UV radiation exposure causes a mutation in a skin cell that results in the formation of cancer

a chromosomal mutation that affects a sperm cell, deactivating a crucial gene involved in development

an insertion mutation in an egg cell that deactivates a gene for hair color, resulting in a viable error

Answers

Answer:

an insertion mutation in an egg cell that deactivates a gene for hair color, resulting in a viable error

Answer:

Option 4. an insertion mutation in an egg cell that deactivates a gene for hair color, resulting in a viable error.

Explanation:

Only germline mutations are hereditary in nature i.e., that can be passed on from the parent to the offspring. Examples of hereditary mutation include Sickle cell anemia or hemophilia.Germline mutation: Any noticeable genetic changes in the germ cells of the body that is passed on from the parent to off spring.Mutations such as somatic cell mutation, chromosomal mutation, silent mutations are not hereditary.Option 4 talks about the mutation in egg cells i.e., the reproductive cell which affects the phenotypic traits such as hair color. The change in the phenotypic trait means that it is a genetic mutation of the egg cell as phenotypic changes only occur as a result of genetic mutation. Hence, any detectible mutation in the germ cell can pass on from a parent to offspring.

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George damaged a cranial nerve. His quality of life has decreased because he is no longer able to smile, move his mouth when he talks, or taste well. Which of the following nerves did George damage?

Answers

Answer:

b. Facial nerve is correct

Explanation:   here is some googlied info as well

The facial nerve (the labyrinthine segment) is the seventh cranial nerve, or simply CN VII. It emerges from the pons of the brainstem, controls the muscles of facial expression, and functions in the conveyance of taste sensations from the anterior two-thirds of the tongue.

Prolactin (PRL) is a pituitary hormone that regulates milk production in lactating mammals.

a. True
b. False

Answers

Answer:

true

Explanation:

4. View of space from earth keeps on changing because earth is.....?​

Answers

Answer:

Earth does not always spin on an axis running through its poles. Instead, it wobbles irregularly over time, drifting toward North America throughout most of the 20th Century (green arrow). That direction has changed drastically due to changes in water mass on Earth.

Explanation:

The diagram below shows the same type of molecules in area A and area B. With the passage of time, some molecules move from area A to area B. This movement is the result of which process?


1) active transport

2) diffusion

3) transpiration

4) respiration

Answers

Is active transport

The picture above shows a microscopic view of an animal cell. Which of the following is an observation that can be made about the cell?
A.
The DNA in the cell codes for blue eyes.
B.
The cell is made up of several organelles.
C.
The cell is larger than the cell of a plant.
D.
The cell was taken from the liver of a cat.

Answers

Answer:

Awnser

Explanation:

The Awnser is C _________________

why do wildlife populations tend to decline as the human population grows?

Answers

Answer:

Human populations compete for the same space, water, and other resources that are required for wildlife survival. Contact with humans protects domesticated animal populations from disease but decreases nearby wildlife populations.

Explanation:

help maybe pass by ufnfudbfudgs

Answers

Answer:

1 I

2 D

3 B

4 F

5 C

6 H

7 A

8 E

9 G

Explanation:

The answers correlates directly down the line. Plug in the answers to the number they are listed

The autoimmune disease that results from the body attacking tissues such as the heart or lungs is called

Answers

Answer:

RA

Explanation:

Explain how various depressants affect nervous system activity and behavior (alcohol, barbiturates, and opiates)

Answers

Answer:

They kill you

Explanation:

They kill you

Why is food web more practical in nature than food chain

Answers

Answer:

Hey mate.....

Explanation:

This is ur answer....

A food web is a more realistic way of portraying an ecosystem than a food chain because food chains imply that organisms only eat one type of organism which is rarely true. In a food chain predators occupy higher levels than their prey. Food webs are more complicated diagrams that are not purely linear.

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the part of the diencephalon that is in the anterior and inferior region of the diencephalon is the

Answers

Answer:

hypothalamus

The part of the diencephalon that is in the anterior and inferior region of the diencephalon is the Hypothalamus.

What is Hypothalamus?

The hypothalamus exists a portion of the brain that includes a numeral of small nuclei with a combination of functions. One of the most important operations of the hypothalamus exists to link the nervous system to the endocrine system via the pituitary gland. The hypothalamus exists discovered below the thalamus and exists as part of the limbic system. The terminology of neuroanatomy, includes the ventral part of the diencephalon. All vertebrate brains include a hypothalamus. In humans, it stands the size of an almond.

The hypothalamus stands answerable for the regulation of specific metabolic functions and other actions of the autonomic nervous system. It synthesizes and secretes certain neurohormones, named releasing hormones or hypothalamic hormones, and these, in turn, promote or inhibit the secretion of hormones from the pituitary gland. The hypothalamus influences body temperature, hunger, important aspects of parenting and affection manners, thirst, fatigue, sleep, and circadian rhythms.

Hence, The part of the diencephalon that is in the anterior and inferior region of the diencephalon is the Hypothalamus.

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microscopic hair-shaped cells are referred to as_________​

Answers

Answer:

it is called cillia I think

1. What charts, tables, or drawings would clearly show what you have learned in this lab?
Each chart, table, or drawing should have the following items:
a. An appropriate title
b. Appropriate labels

Answers

The answer is

B. Appropriate labels

I have no idea what I'm doing​

Answers

True very much true

Which of the following is most likely to occur at a convergent boundary?
A. Mountain formation
B. Sea floor spreading
C. Faults
D. Mid-Atlantic rift

Answers

Answer:

A) a mountain formation

Explanation:

You are looking at a stained smear of horse blood and you see a leukocyte with large red granules in its cytoplasm. What cell are you most likely seeing

Answers

Looking at a stained smear of horse blood and seeing a leukocyte with large red granules in its cytoplasm. I am most likely seeing a granulocyte, an eosinophil in particular.

Leukocytes are white blood cells and there are various types of white blood cells including granulocytes, agranulocytes.

Granulocytes are white blood cells present with granules and produced in the bone marrow. There are three types of granulocyte; they include eosinophil, basophil and neutrophil.

Eosinophils are white blood cells with large granules and they stain red with dye. Their nucleus is also made up of two unsegmented lobes.

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Which statements accurately describe the pharmacokinetic parameters of oral conjugated equine estrogens (CEEs)

Answers

The parameters are near complete absorption, high protein binding, and high distribution, extensive metabolization of tamsulosin, and exit of the substance through the urine, as shown in options 1,3,4, and 5.

We can arrive at this answer because:

Oral conjugated equine estrogens are medications taken orally when prescribed by a qualified practitioner.These medications are made with a mixture of several types of estrogens that resemble each other in some way.They are widely used to treat osteoporosis and other common problems in women.

One of the main characteristics and advantages of this type of medicine is that its excesses are eliminated in the urine. In addition, they are easily absorbed by the body, are highly distributed, easily bind to proteins, and are easily metabolized.

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How can atp drive a reaction.

Answers

Answer:

•The hydrolysis of ATP to drive a thermodynamically unfavorable reaction.this process is ATP coupling

Explanation:

For example, the conversation of glucose to glucose -6-phosphate.

Your body's 2nd choice of food group to break down for energy?

Answers

Answer:

protein

Explanation:

because it has many functions andreplaces most nutrients

The world population has surpassed 7 billion and is continuing to increase dramatically. Select the factor that has demonstrated an
inverse relationship to population growth.
es )
A)
deforestation
B)
violent political conflict
spread of communicable diseases
D)
biodiversity of plant and animal species

Answers

Answer:

D

Explanation:

As population grows all the above factors increase expect the biodiversity of animal and plant species.

On a basic level, it is obvious that population increase and per capita income growth are related. Per capita income is simply total income divided by the population.  Thus, option D is correct.

What inverse relationship to population growth?

When attempting to forecast changes in population size, demographers frequently focus on four essential criteria.

The population's starting age profile (whether it is relatively young or old to begin with), migration, and fertility rates (death rates; life expectancy).

Depending on particular environmental factors, two different patterns of population expansion may manifest: In a perfect, limitless environment, an exponential growth pattern (J curve) manifests itself.

The development of a logistic growth pattern (S curve) occurs when external forces reduce the pace of growth.

Therefore, The gap between the growth rates of income and population is roughly equivalent to the growth rate of per capita income.

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Edpuzzle: Fermentation - Amoeba Sisters

Answers

Answer:

=amoeba sisters

Explanation:

Which part of the nerve cell houses the nucleus?

Answers

Answer:
B. Cell body

Step-by-step explanation:
Says B is correct lol

Answer:

B. Cell body is correct  (second posting of THIS)

Explanation:

HOW did this answer get deleted?  I'm posting again to see if it stays or is someone reporting correct answers? I highly recommend EVERYONE post CORRECT results to quiz let instead of this site

_____ is the natural, temporary absence of consciousness from which a person can be aroused by normal stimulation.

Answers

Answer:

Sleep

Explanation:

A 160 lb. college student consumes a bowl of cereal containing 750 Calories in the morning. He then sits quietly in class for 4 hours, and then goes for a 30-minute run. How many Calories did he use, and was it more or less than he consumed?

Answers

Answer:

less

Explanation:

because a 30 min run can only burn 200-500 calories

In the morning, a 160-pound college student consumes a bowl of cereal with 750 calories. 30 minutes of running can only burn 200-500 calories.

What is Calories?The calorie is a type of energy unit. For historical reasons, there are two main definitions of "calorie." The large calorie, food calorie, or kilogram calorie was originally defined as the amount of heat needed to raise the temperature of one kilogram of water by one degree Celsius.Calories are the units of energy released by your body when it digests and absorbs food. The higher the calorie content of a food, the more energy it can provide to your body. When you consume more calories than you require, your body stores the excess calories as fat. Even fat-free foods can be high in calories.

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What are the two phenomenon that results in drastic weather change in the world?

Answers

Answers:

Hurricane or Tornado

Explanation:

Whenever a Hurricane or Tornado occurs it can cause drastic change in weather causing floods, wind, and damage to houses, buildings, and even people and animals.

4) A change in the natural sequence of bases in DNA structure is called a

Answers

Answer:

Mutation

Explanation:

A mutation is a change in the sequence of genetic letters, called bases, within a molecule of DNA.

Use examples to explain how the geosphere interacts with two other of Earth's spheres. Explain the interaction for each using complete sentences. HELPPPP

Answers

Several examples of sphere interactions can be inferred from this photograph: Humans (biosphere) built a dam out of rock materials (geosphere). Water in the lake (hydrosphere) seeps into the cliff walls behind the dam, becoming groundwater (geosphere), or evaporating into the air (atmosphere).

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Answer: Dont have one just wanted to help this person get brainliest

Explanation: I like helping

Determine the phenotypic ratios of the offspring. 9 yellow-inflated : 3 yellow-constricted : 3 green-inflated: 1 green-constricted 9 green-inflated : 3 green-constricted : 3 yellow-inflated : 1 yellow-constricted 9 green-constricted : 3 green-inflated : 3 yellow-constricted : 1 yellow-inflated 9 yellow-constricted : 3 yellow-inflated : 3 green-constricted : 1 green-inflated

Answers

From a cross between dihybrid individuals, whose diallelic genes code for one trait each, expressing complete dominance, the phenotypic ratio is B) 9 green-inflated : 3 green-constricted : 3 yellow-inflated :1 yellow-constricted.

-------------------------------

Since I do not have the cross, I will assume the cross involves two dihybrid individuals by looking at the options.

So, let us picture the situation,

Two diallelic genes code for one trait each, color and inflated/constricted pods.G allele is the dominant and codes for green podsg allele is recessive and codes for yellow podsI is the dominant allele and codes for inflated podsi is recessive and codes for constricted podsThese genes are not linked

1st Cross)   Two h0m0zyg0us individuals

Parental)  GGII     x     ggii

F1) 100% GgIi

2nd Cross) Selfcross between F1 individuals

Parentals)   GgIi    x    GgIi

Gametes) GI, Gi, gI, gi

                GI, Gi, gI, gi

Punnett square)     GI        Gi        gI       gi

                     GI      GGII     GGIi   GgII   GgIi

                     Gi      GGIi      GGii   GgIi   Ggii

                      gI      GgII     GgIi    ggII    ggIi

                      gi      GgIi     Ggii    ggIi     ggii

F2)    Genotype

1/16 GGII2/16 GGIi1/16 GGii2/16 GgII4/16 GgIi2/16 Ggii1/16 ggII2/16 ggIi1/16 ggii

   

       Phenotype

9/16 G-I- ⇒ Green and Inflated3/16 G-ii ⇒ Green and constricted3/16 ggI- ⇒ Yellow and inflated1/16 ggii ⇒ Yellow and constricted

Phenotypic ratio 9:3:3:1

Options

A) 9 yellow-inflated : 3 yellow-constricted : 3 green-inflated: 1 green-constricted ⇒ NOT CORRECT

B) 9 green-inflated : 3 green-constricted : 3 yellow-inflated : 1 yellow-constricted ⇒ CORRECT

C) 9 green-constricted : 3 green-inflated : 3 yellow-constricted : 1 yellow-inflated ⇒ NOT CORRECT

D) 9 yellow-constricted : 3 yellow-inflated : 3 green-constricted : 1 green-inflated ⇒ NOT CORRECT            

-----------------------------

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