When a light wave reflects off a solid surface, it can do all the following expect ?

Answer:

Sodium Atom is an element in its original state and Sodium ion is that on an excited state

Explanation:

Sodium Ion is a Soduim atom that has lost one electron.

Answer: hope the below answers will help

Explanation:

1 and 2 in this paragraph

SKILLS TO DEVELOP

Briefly describe what is meant by the endosymbiotic theory.

Give some evidence supporting the theory that mitochondria and chloroplasts may have arisen from prokaryotic organisms.

It is thought that life arose on earth around four billion years ago. The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes. In this theory, the first eukaryotic cell was probably an amoeba-like cell that got nutrients by phagocytosis and contained a nucleus that formed when a piece of the cytoplasmic membrane pinched off around the chromosomes. Some of these amoeba-like organisms ingested prokaryotic cells that then survived within the organism and developed a symbiotic relationship. Mitochondria formed when bacteria capable of aerobic respiration were ingested; chloroplasts formed when photosynthetic bacteria were ingested. They eventually lost their cell wall and much of their DNA because they were not of benefit within the host cell. Mitochondria and chloroplasts cannot grow outside their host cell.

Evidence for this is based on the following:

Chloroplasts are the same size as prokaryotic cells, divide by binary fission, and, like bacteria, have Fts proteins at their division plane. The mitochondria are the same size as prokaryotic cells, divide by binary fission, and the mitochondria of some protists have Fts homologs at their division plane.

Mitochondria and chloroplasts have their own DNA that is circular, not linear.

Mitochondria and chloroplasts have their own ribosomes that have 30S and 50S subunits, not 40S and 60S.

Several more primitive eukaryotic microbes, such as Giardia and Trichomonas have a nuclear membrane but no mitochondria.

Although evidence is less convincing, it is also possible that flagella and cilia may have come from spirochetes.

Figure 7.8.1 : One model for the origin of mitochondria and plastids. This model has an amitochondriate eukaryote engulfing an aerobe and then a cyanobacterium. Image used with permission from Kelvinsong

EXAMPLE 7.8.1

Briefly describe what is meant by the endosymbiotic theory.

Give three points of evidence supporting the theory that mitochondria and chloroplasts may have arisen from prokaryotic organisms.

Solutions

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

Mitochondria and chloroplasts are the same size as prokaryotic cells and divide by binary fission.

Mitochondria and chloroplasts have their own DNA which is circular, not linear.

Mitochondria and chloroplasts have their own ribosomes which have 30S and 50S subunits, not 40S and 60S.

Summary

The endosymbiotic theory states that mitochondria and chlopoplasts in today's eukaryotic cells were once separate prokaryotic microbes.

Contributors

Dr. Gary Kaiser (COMMUNITY COLLEGE OF BALTIMORE COUNTY, CATONSVILLE CAMPUS)

Your choices should be of relative importance during the time, and not in the long term. Remember, if you help people long term, and the short term dies, then most likely the long term people will die as well.

In the excerpt, it shows that there is enough drugs for 5 groups of people. It is also stated that 15% of the population will die. Note that "will" means necessary, which means they cannot be healed at any point of time.

Young children between birth and 5 years: Those who were borned during sometimes have a better immune system against the disease (as seen in many past instances), as their body has grown accustom to it. However, they are also the group with the highest risk. Their autoimmune system has not developed fully to be able to fight off the disease if it really takes into effect. As the ones that will be part of the next generation, they should receive the dose.

Public Servants like the Police and Fire Department: These are the ones who will have the most human interaction, especially during a high infection state (in which people will be quarantined like we are). Because of this, they should also receive their dose, as their human interaction per day-to-day basis is higher than most of us.

All Adults between 20 and 40, determined to be the highest risk for severe symptoms: Adults who are between 20 - 40 are at the prime of their age, and generally would have the strongest immune system. However, note that these people are located in the highest risk of symptoms. Remember, viruses can evolve, and so if those who are at their peak immune system and are those who most likely would travel around (and most likely not follow government orders of isolation) would have not only the highest chances of infection, but also the highest chances to spread the infection.

Utility industry employees: Utilities such as water, electricity, as well as plumbing, etc. are essential in being kept in order for people to continue to stay at home. This also means that there must be people to keep it in order and running. These people are essential in continuing the way of life for the people.

Food Industry employees: Everybody needs to eat (as well as drink), and there must be a dedicated source for such. This means while they may be able to set up a way to help isolate the people to safer distances, they should not close down. Remember, food, utility, and water make up the foundation of what is important for a human.

As for what the other groups would have to do to prevent the disease, they should stay isolated as much as they can, and to wear disposable gloves and masks when they go outside. They should also wash their hands as much as they can, and avoid to touch their mouth & face with their hands when possible. Avoid contact with others when possible. Work that can be done at home should be moved to home/online.

Possible death of the 5%:

Infants: While they may develop immunity in the beginning stages, they are also the ones that will not have developed immune system. This puts them in a hazardous yet safe place, which is why they get the cure.

Healthcare workers: Healthcare workers will be knowingly exposed to the disease. However, as they know they have a high chance of being exposed to it, they can take the necessary precautions to avoid coming in contact with it, something other groups cannot. However, I feel like the Healthcare workers should have fallen under the umbrella of Public Servants, but since it does not, I will include it here.

Any of the Employees: Employees are employees as they need the steady income from somewhere. As many may be living pay check to pay check, they may feel the pressure build up when they do not work, and may force themselves to disobey government orders and go work. They will have a higher chance to be exposed to the disease, and therefore, in turn, have a low-medium to high chance of being exposed and die of the disease.

High risk areas: They are high-risk for a reason, and so they will have a higher chance of not only contracting, but with failure of noticing the symptoms, to die of it as well.

As for the other groups, I do not have the room to give out exactly why they should stay at home. However, for your job, you can essentially write that their jobs are not essential in keeping humanity alive. Those who can will continue to work through home and the internet or other means, while the others will risk too much just to work. Those jobs that are not essential to meeting human needs or essential in finding the cure for the disease should stop at once.

Answer:

b,d,e

Explanation:

I took the assignment.

The functions that are aided by swimmerets in crustaceans are gas exchange, reproduction, and swimming.

Crustaceans may be defined as any of a large group of mostly water animals, that have tough outer shells, two pairs of antennae, and limbs that are jointed.

Crustaceans are organisms that belong to aquatic habitats where play performs their functional role and increase their survival rate effectively.

Therefore,  the functions that are aided by swimmerets in crustaceans are gas exchange, reproduction, and swimming.

To learn more about Crustaceans, refer to the link:

https://brainly.com/question/2114447

Answer:

C - Omnivores

Explanation:

Answer:

C. Omnivores

Explanation:

Humans consume both plants and animals, so they’re omnivores. Producers make their food in the presence of sunlight. Carnivores eat other consumers. Decomposers consume dead plants and animals.

Answer:

"Protists" So it is Eukarya

Answer:

atmosphere

Explanation:

Answer:

Producer

Explanation:

A producer provides food for other organisms and a consumer is an organism that eats the producer.

Answer: No population can increase without limitation. Instead, populations in natural ecosystems increase or decrease in response to the changes in the factors that restrict growth. Many factors influence population densities and growth, and these factors may lead to oscillations in population size over time. It is also often difficult to determine the exact factor limiting growth. Many different factors may combine to produce unexpected results.

Explanation: I hope this helps....

Answer:

Limiting factors include a low food supply and lack of space. Limiting factors can lower birth rates, increase death rates, or lead to emigration. Limiting factors determine the carrying capacity of a population.

Answer:

White blood cells: lymphocytes, neutrophils, and monocytes

Explanation:

Lymphocytes are processed in the bone marrow and then migrate to the lymphoid organs. The cells of the immune system are white blood cells: lymphocytes, neutrophils, and monocytes.

The immune system comprises of many biological structures and processes within an organism that provides resistance to infection and toxins.

Answer:

Differences in beak shapes tell us that all the finches eat the same type of food. Different finch beak shapes are evidence that all Galápagos finches shared a common ancestor a long time ago. Different finch beak shapes are evidence that over time, finch species adapted to different food sources on the islands.

Explanation:

Answer:

i think it's b

Answer: D.) phytoplankton are producers, and cod are consumers.

Explanation:

A.) is wrong because cod are consumers, not producers

B.) is wrong because zooplankton are consumers too

C.) phytoplankton are producers, and zooplankton are consumers instead.

Hoped I helped a bit! :)

Answer:

The lymphatic system has three main functions: It maintains the balance of fluid between the blood and tissues, known as fluid homeostasis. It forms part of the body’s immune system and helps defend against bacteria and other intruders. It facilitates absorption of fats and fat-soluble nutrients in the digestive system.

Explanation:

Answer:

(c) the kidneys

Explanation:

Your kidneys remove wastes and extra fluid from your body, basically filtering fluids

Answer:

Magma ocean. The force of the moon-forming impact left Earth a churning hot magma blob. The hellish conditions meant Earth resembled Venus for a time, with a hazy, steamy atmosphere. But as the planet cooled, lava became rock and liquid water started to condense, forming Earth's first ocean.

Explanation:

Answer:Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.

Explanation:

Answer:

molecules provide energy for your body through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.

Explanation:

hope this helps, have a good day : )

Answer:

Gregor Mendel

Explanation:

He did not study the structure of DNA.

Answer:

step four
step three
step two

Explanation:

Answer:

True

Explanation:

Biogeochemical cycle is a pathway for chemicals necessary for life to move through the environment.

Your body is composed of oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Most of these elements go through different biogeochemical cycles to move through the environment to you or from you to the environment.

Answer:

DNA

Explanation:

Answer:

On a weather map, a warm front is usually drawn using a solid red line with half circles pointing in the direction of the cold air that will be replaced. Warm fronts usually move from southwest to northeast. ... A cold front is the transition area where a mass of cold air moves in to replace a mass of warm air.

Explanation:

Answer:Which object is created during the formation of a star?

a nebula

a protostar

a supergiant

a supernova

Explanation:

this is the best description

respiration is the process in which oxygen is inhaled for the breaking down of glucose(food) in the cells and carbon dioxide is exhaled

Answer:

D

Explanation:

Larger organism increases more in volume than area. That's why larger organism uses respiratory systems or organs and systems instead of simple diffusion for removal of waste and absorption of nutrients.

Answer:

The given statement is true.

Explanation:

The enactment of the Environmental Policy Act or the EPA in 1969 was done to monitor the issues of the environment that took place in the 1960s. It was the major and the primary law, which was postulated at that time to solve environmental issues in the United States. The enactment of the EPA law was done for various reasons, some of which are as follows:  

1. To better the health of human beings.  

2. To generate harmony between nature and humans.  

3. To encourage efforts to reduce destruction to the environment.  

Answer:

true ).    

Explanation:      answer on edge

Answer:

I'm pretty sure it is exocytosis. Because exocytosis transports vesicles out of the cell through the plasma membrane. Remember it as "exo" = exit.

Answer:

C. Exocytosis

Explanation:

The first thing we notice is that the question says "active transport". Looking at the answer choices, we see that "osmosis" and "diffusion" are options.

However, remember that osmosis (the diffusion of water from high to low concentration) and diffusion (the movement of particles from high to low concentration) are both passive transport; in other words, they don't require an input of energy. So eliminate them.

Now look at endocytosis and exocytosis. "Endo" means "inner", so "endocytosis" means the cell is engulfing a substance and bringing it inside. However, we want the process where a substance is moved out.

"Exo" means "out", so "exocytosis" means to expel something. That matches here, so our answer is C.

~ an aesthetics lover

Answer:

true

Explanation:

because to domesticate animals we just picked the ones we wanted