Please answer ASAP! 50 points
Assuming that species 1 is the ancestral species of the group,

(a) What type of mutation do you observe in species III? (1pt)
(b) A change in DNA may cause a change in the protein coded by that specific DNA. Give the main steps of transcription (make sure to mention the antisense strand and the enzyme involved) (3 pts)
(c) In Eukaryotes, the molecule produced by DNA must be modified in order to leave the nucleus. Explain TWO of those modifications. (2 pts)

Answer:

C

Explanation:

Answer:Estuaries :)

It has to be 20 characters

Answer:

above me is right i got 100

Explanation:

Answer: USA, And Russia

Explanation:

Answer:

Grana are the structures formed of coin like structures called thyllakoids that encloses chlorophyll for absorbtion of light essential for photosynthesis.And grana also give green colour to chloroplast.

Explanation:

Explanation:

A because you need reservation question hypothesis experiment analyze and a conclusion

Answer:

A pre-existing weather disturbance: A hurricane often starts out as a tropical wave. ... Thunderstorm activity: Thunderstorms turn ocean heat into hurricane fuel. Low wind shear: A large difference in wind speed and direction around or near the storm can weaken it

Explanation:

Answer:

and wind

Explanation:

Answer:

allows for selection of E. coli mutants that successfully picked up the plasmid

Explanation:

Ampicillin is a penicilin type medicine or antibiotic that can treat the infections caused by bacteria.

In bacterial transformation lab, the ampicillin is added in the agar in order to select the E.coli mutants which picked the plasmid and have gained ampicillin resistance gene. Bu doing so, it causes the production of the enzymes that prevents the activity of the ampicillin as well as the bacteria survive. The ampicillin antibiotics present in the agar kills the bacteria without having the ampicillin resistance gene.

Answer: C. Have low melting points.

Explanation: Metals have high melting points, not low; therefore, C does not belong.

Answer:

Alzheimer's disease is a condition that causes dementia. It causes the brain to degenerate and die.

This causes people to decline in their ability to think, socialize, and live independantly.

Answer & Explanation:

Alzheimer's disease is an irreversible, progressive brain disorder that slowly destroys memory and thinking skills and, eventually, the ability to carry out the simplest tasks. It is the most common cause of dementia in older adults. As Alzheimer's disease progresses, people experience greater memory loss and other cognitive difficulties. Problems can include wandering and getting lost, trouble handling money and paying bills, repeating questions, taking longer to complete normal daily tasks, and personality and behavior changes.

Pretty sure the answer is Sugar, Correct me if I'm wrong

Sugar is not a lipid, but it is a carbohydrate. Thus, option C is correct.

Lipid is type of biomolecule, consisting, fats, steroids, waxes, and fat soluble vitamins such as A, D, E, K and others. It is an organic molecule which is hydrophobic or amphiphilic molecule which is insoluble in the water.

Fatty acids are included in the class of carboxylic acids which has long hydrocarbon chain and terminal carboxyl group (COOH). As compare to other molecules found in food that are carbohydrates and proteins, lipids contain more than twice energy.

Lipids play significant role in cell signaling as lipid signaling, which is very vital part of it. It is also involved in immunity, hormones such testosterone, estrogen, cortisol. Fat soluble vitamins play an important role in nutrition.

Therefore, sugar is carbohydrate not lipid. Therefore, option C is correct.  

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Answer: B.Grass

Explanation:

Answer:

The endosymbiotic theory states that some of the organelles in eukaryotic cells were once prokaryotic microbes.

Answer:

Heterogeneous

Explanation:

Sand may appear homogeneous from a distance but it is heterogeneous.

The correct answer to this open question is the following.

I can say that under the following conditions it is ethical for conservationists who live in the United States to lobby government officials in Brazil, Indonesia, and other tropical countries to slow the rate of loss of old-growth forests.

First, American conservationists have to use diplomatic approaches to use the correct language to ag¿ddress the issue and the political leaders of those countries.

Then, they have to fully understand what the situation is, knowing all sides of the story so they can avoid any mistakes.  They have to include the official version of the governments to try to not bias their opinions.

Once they have done that, then they will have all the elements to make an official statement about the critical situation in those above-mentioned places.

And one very important thing, they have to be careful in using polite words such as "invite" or "exhort" when addressing the federal institutions of those countries.

Answer:

cells needed for sexual reproduction

Explanation:

so that during fertilization,the total number of chromosomes will be 46..

What are the cells that divide to produce gametes? germ cells

It is the reproductive cell of an organism. They are haploid in nature. 

There is a male gamete that is termed sperm (animals) or pollen grain (plants) and a female gamete that is termed ovum (animals) or egg (plants).

Meiosis, or reductional division, occurs prior to gamete formation.

It ensures that after fertilization, the normal diploid number is maintained.

Germ cells are the cells that produce gametes. 

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Answer:

can you please rewrite that so it can make more sense

Explanation:

Answer:

Explanation: Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar

So yes photosynthesis uses light and water in the process of forming sugar.

Answer:

just so I can see the question dont mind this

Answer:

You didn’t put any options if you say the options i will answer.

Explanation:

Answer:

producers

Explanation:

producers are usually plants and veggies/ fruits. These producers don't get their energy from other organisims. They get it from sunlight and water etc. They are the end stage of the food chain.

Answer:

A

Explanation:

The unique features with regarding the se-xual reproduction should contained only half the genetic material of the parent.

Meiosis refer to the special type of the cell division with respect to the germ cells with respect to the organism that should be se-xually reproduction.

Also, it generated the gametes, like the sperm or egg cells. Also, it includes the 2 rounds of division that leads in four cells with only one copy for every chromosome.

Therefore, the first option is correct.

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Answer:

d. vessels that carry water and nutrients

Answer:

convergent boundaries are boundaries that come together

Explanation:

Answer:

I would say B

Explanation:

When it comes to predator and prey, the prey will always have a higher population than the predator.

Answer:

See the answer below

Explanation:

Women are often carriers of X-linked traits but are rarely affected by the trait because they have two X chromosomes and the two have to carry the X-linked allele in order for them to be phenotypically affected, especially if the trait is a recessive one.

Unlike men that are XY and only require one X-linked allele in order to be affected for X-linked recessive traits, women need two alleles - one on each chromosome - in order to be affected. One of the X chromosomes of a woman usually comes from the woman's father and the other one from her mother. In order to be affected, a woman must inherit an affected chromosome from her father and her mother respectively, thereby reducing the probability of having the trait.

The X chromosome of a man usually comes from his mother. Hence, a man only needs to inherit an affected chromosome from his carrier mother to be affected for the trait, thereby increasing the probability of having the trait when compared to a woman.

This is not the case for X-linked dominant traits where both men and women have an equal chance of being affected.

Women carry two XX chromosomes in their cells. They carry the X chromosome but rarely gets affected by the trait because to be phenotypically affected they should carry X linked disease trait on both the X chromosomes.

Especially in the case when the trait is recessive then they should have two XX chromosomes which are linked to traits.

In the male, they have one X and one Y chromosome so they acquire an X chromosome and gets affected by it.

In male presence of one X chromosome from the carrier mother is enough to pass the trait. While in females to have X linked recessive trait they should have two alleles.

The woman does not get affected as one chromosome comes from the father and the other from the mother so to be affected the woman must acquire genes with traits from both parents.

Therefore, women are often carriers but are rarely affected by them.

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Answer:

How can we explain why there is so much diversity of life on Earth today?

There are several key reasons for high biodiversity in tropical ecosystems. High NPP directly contributes to α-diversity by supporting more species with minimum viable populations, whereas enlarged populations of each organism increase overall mutation frequency and hence intraspecific genetic variation.

Explanation:

Brainliest please?

Answer:

The flow of energy in ecosystems is unidirectional or one-way.

Explanation:

Energy is the ability to do work. Energy flows in one direction in an ecosystem and is not recycled. This is because during the transfer of energy from one level to another, energy is lost. Most of the energy received from the sun by producers, plants, is lost as heat to the surroundings. The rest energy is converted by plants to produce food in the form of chemical energy.

Primary consumers feed on plants and secondary consumers feed on the primary consumers and so on up to quaternary consumers. However, at each level of energy transfer, some energy is lost as heat during respiration, some as unused or undigested materials, while some others are used for each organisms metabolic activities. About 90% of energy in a trophic is used at that trophic level. Therefore, only about 10% as much energy is available to  organisms at each successive trophic level. Therefore, energy is not recycled in ecosystems.

Earth's atmosphere maintains its temperature by means of the earth's energy balance. This refers to how incoming from the sun and outgoing energy from the earth are in balance, thereby keeping earth's temperature constant.

Decomposers, are organisms such as bacteria, fungi, and small animals such as ants and worms that eat and decompose dead and waste organic matter and which recycle nutrients back into food chains making them available for plants use. Therefore, decomposers are an essential components of all ecosystems.

1.The enzyme pepsin.Pepsin breaks down proteins in the stomach

2 Im pretty sure its the duodenum and the ileum