A cell of an organism has four chromosomes. It undergoes a process at the end of which two daughter cells are produced. Each daughter cell has four chromosomes. Which process is described?

QUESTION POSTED AT 18/01/2020 - 06:15 AM

Answered by admin AT 18/01/2020 - 06:15 AM

Mitosis 

Mitosis
and meiosis are simply cell division processes that occurs differently, they're characteristically divergent from each other according to their function and structure. Mitosis is the cell division that happens in all cells in the human body except sperm and egg cells. They produce diploid cells. Meiosis on the other hand is responsible for the cell division of the gametes, spermatogenesis (sperm cells) and oogenesis (egg cells), such haploid cells. 
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I need help with five multiple choice marine science questions. 1)When severe weather damages the plant life in an ecosystem, what effects might this have on other organisms in the same ecosystem? a)- Other organisms could starve or have to leave the area if they depend on the plants as food. b) -Other organisms could change their behavior to take the place of the plants in the ecosystem. c )-Other organisms would not be affected. d )-Other organisms could replace the plant energy with radiant energy from the sun. 2)As the climate changes, the average ocean temperature is rising. Using this information, predict what will most likely happen to El Niño events in the future. a)-El Niño events will intensify because they rely on warmer water sinking to the seafloor. b)-El Niño events will intensify because they will build on the already warm waters at the equator. c)-Some El Niño events will be stronger, but most will be weaker because the ocean currents are unpredictable. d)-El Niño events will become more similar to La Niña events and establish a new weather pattern. 3)Which of the following examples is the most likely way severe weather can negatively affect the biodiversity of a marine ecosystem? a)-A severe thunderstorm brings rain and wind to an intertidal zone. b)-A storm surge from a hurricane floods a coastal area. c)-A tornado causes a waterspout. d)-A blizzard adds snow and ice to an arctic glacier. 4)El Niño events are characterized by warmer than normal ocean temperatures near the equator in the Pacific Ocean. Which weather events are most likely to occur as a result? a)- Increased rainfall across the eastern Pacific Ocean b)-Decreased flooding across the eastern Pacific Ocean c)-Drought along the South American Pacific coastline d)-Colder winter along the South American Pacific coastline 5)According to the Severe Weather Activity worksheet, El Niño events most likely occurred during which of the following years? a)-2006 and 2015 b)-1997, 2006, and 2015 c)-1997 and 2015 d)-1997 and 2006

1. The answer is A. The eradication of plants in an ecosystem would devastate the food web in the habitat. This is because plants are primary producers and significant as conduits of energy into a food web. Plants convert radiant energy from the sun to biomass through photosynthesis. This energy then transferred up the food chain through various form of interaction such as predation.

2. The answer is B. Global warming causes water at the equator to be even warmer above normal temperatures. This fans the upwelling of cold water from below the ocean floor and causes an even greater disparity of temperatures across the Pacific ocean. This subsequently fans the trade winds hence warming the air even more and causing severe storms.

3. The answer is B. The flooding of the coastal area due to hurricanes destroys the biodiversity of the ecosystem by physically destroying the habitat and by drowning organisms such as affecting a whole species population. This upsets the balance of the ecosystem and makes it prone to even further deterioration.

4. The answer is A. When the surface ocean waters at the Pacific ocean warm at the equator, there is an upwelling of cooler ocean waters from the bottom of the ocean., The warm currents along with trade move towards the east and met the South American coastline where they bring in heavy rainfall. Conversely, the northwestern region of the Pacific experiences drought.

5. The answer is C. Elnino and La Nina occurs at a frequency of approximately two(2) to seven (7) years. The phenomenon usually lasts nine (9) to twelve (12) months. El Ninos are more frequent than La Ninas. Their peak effect is usually felt around December and January. The strongest El Nino was the one that occurred in 1997.

ANSWERED AT 16/02/2020 - 07:04 PM


QUESTION POSTED AT 16/02/2020 - 07:04 PM

Suppose that a when a cell phone store charges 16$ for a car charger, it sells 92 units. When it drops the price to 15$ it sells 96 units. Assume that demand is a linear function of price. If each phone charger costs 1$ to make, what price should the store charge to maximize its profit? If x is the number of times the price is reduced by one dollar. Find a function for total profit with respect to x. A negative value for x will mean the price is increased. ...?

If you put the dollar decrease as x, you sell charge
16−x

dollars and sell
92+4x

units for a profit of
(16−x)(92+4x)−(2+4x)

dollars. the last subtraction because your cost is $1 per unit multiply out and
get
P=−4x2−32x+1470

which will have a maximum at the vertex
x=−b/2a

32/(2(−4)) 

= −4

I hope the answer has come to your help. Thank you for posting your questions here in Brainly!


ANSWERED AT 16/02/2020 - 06:39 PM


QUESTION POSTED AT 16/02/2020 - 06:39 PM

A.) List one organism classified in kingdom Animalia and one organism classified in kingdom Fungi b.) Describe two similarities between the two organisms. c.) Describe two differences between the two organisms. ...?

A. Kingdom Animalia: Dogs
    Kingdom Fungi     : Molds
B. Both dogs and molds are eukaryotic- multicellular and do not produce their own food.
C. They have different structures when it comes to physical appearance.The major difference between them is their ability to move - animals are capable of free movement while fungi yes they can but not as much as the animals.

ANSWERED AT 16/02/2020 - 06:34 PM


QUESTION POSTED AT 16/02/2020 - 06:34 PM

3 things that the cell is doing during interphase.

1)grows 2)copies its DNA 3)prepares to divide

ANSWERED AT 16/02/2020 - 06:24 PM


QUESTION POSTED AT 16/02/2020 - 06:24 PM

What would happen if all of the genes in a cell were always active?

It would apoptoses. The genes triggering cell death would be active, therefore it would have to die.

ANSWERED AT 16/02/2020 - 05:05 PM


QUESTION POSTED AT 16/02/2020 - 05:05 PM

A group of hikers find a fallen tree in a forest. The dead tree trunk is covered by mushrooms and other fungus. Later, they find a wild apple tree with many apples lying on the forest floor beneath the tree. The apples are all rotten and decayed by bacteria. Which statement BEST summarizes how these fungus and bacteria organisms are obtaining their food energy? A) The fungus and bacteria are both parasitic organisms that obtain food from other living organisms. B) The fungus and bacteria are both obtaining their energy by manufacturing food from minerals and sunlight. C) Both fungus and bacteria require well-fertilized soil in which to obtain nutrients needed for chemosynthesis. D) The fungus and bacteria organisms are obtaining the energy they need by decomposing organic matter like dead trees and old apples. Eliminate

Answer: D. The fungus and bacteria organisms are obtaining the energy they need by decomposing organic matter like dead trees and old apples.

Fungi is the primary decomposer of biological waste in forest ecosystem. Fungi grows on the branching network of hyphae which provide it more penetration potential towards the litter. Wood decaying fungi has enzymes required for decomposition of lignin, a chemical substance found in wood. Fungi decompose organic matter by releasing enzymes which breaks down the decaying matter, after that they absorb the nutrients in the decaying material. The left residue in the organic matter includes sugars and amino acids are degraded and decomposed by the bacteria.

ANSWERED AT 16/02/2020 - 04:05 PM


QUESTION POSTED AT 16/02/2020 - 04:05 PM

Which of the following takes place in meiosis but not in mitosis?1. cell division 2. crossing over3. metaphase 4. spindle fiber formation-I think is #2 crossing over but it would be nice for someone to check.

4. Spindle fiber formation takes place in meiosis but not in mitosis. I think, mitosis is what is behind children growing into adults and what helps heal cuts.

ANSWERED AT 16/02/2020 - 03:55 PM


QUESTION POSTED AT 16/02/2020 - 03:55 PM

Which one of these is not an example of intracellular communication A. Molecule in a cell changes function of cell B. Control of cell division C. Molecular movement within a cell D. Reaction to pheromones

Answer:

The answer is Reaction To Pheromones

Explanation:

This is not an example of intracellular communication because Airborne molecules that elicit a reaction in a member of the same species are called pheromones, and the most famous ones are potent aphrodisiacs, like androstenone and androstenol in the saliva of male boars.

ANSWERED AT 16/02/2020 - 03:45 PM


QUESTION POSTED AT 16/02/2020 - 03:45 PM

Explain how the inside of a cell remains separate from its environment

     Well, first, we need to know the structures of a cell to answer this question properly.

      As you may know, a cell contains lots of different structures with different functions, for example, a ribosome, it is an organelle that makes protein for your body. The inside of a cell is separated then by a plasma membrane made out of phospholipids, it protects the inside of a cell by deciding what gets in and what gets out through proteins attached to it and vesicles. The inside of a cell must be always separated from its environment because of the difference in pH levels most of the times, or even to maintain its functions working properly without outside influences.

ANSWERED AT 16/02/2020 - 03:29 PM


QUESTION POSTED AT 16/02/2020 - 03:29 PM

True or False: If the prefix "iso" means the same, there is no change in the cell (egg).

Answer:

True

Explanation:

We are given that the prefix ''iso'' means the same .

Iso mean  equal , there is no change in the cell .

For example iso-gametes

It means the gametes are same .All gametes are same and are not different with each other.

Isomer : It means that the compound which have same molecular formula but different structural formula .

Therefore, we can say that iso mean same or equal or identical or  like or similar .

Hence, the given statement is true.

ANSWERED AT 16/02/2020 - 07:00 AM


QUESTION POSTED AT 16/02/2020 - 07:00 AM

Which is the correct order of processes that occur for water to move from a lake to a cloud and then turn into rain?

That is called "The Water Cycle" Also called the "Hydrologic Cycle". It goes in this order:

1. Run-off/Collection

2. Evaporation

3. Condensation

4. Precipitation

5. then it goes back to run-off

After that, it goes all over again.

Hope this helped! :D I included pictures for you to see a picture of the Water Cycle and to better understand what I was saying. Lol! :D :)

ANSWERED AT 16/02/2020 - 04:50 AM


QUESTION POSTED AT 16/02/2020 - 04:50 AM

Cells stop dividing if ______ with other cells?

Cells stop dividing if life with other cells

ANSWERED AT 16/02/2020 - 02:11 AM


QUESTION POSTED AT 16/02/2020 - 02:11 AM

How are all living thing made of cells

My answer is all living thing are living things are is to replace damage cell like getting a cut, it can replace those damage cells and healing it.

ANSWERED AT 16/02/2020 - 01:53 AM


QUESTION POSTED AT 16/02/2020 - 01:53 AM

Two or more cell working together form this

Form An organism or a living thing

ANSWERED AT 16/02/2020 - 12:41 AM


QUESTION POSTED AT 16/02/2020 - 12:41 AM

occurs naturally between organisms living in an environment with limited resources. A. Competition B. Symbioses C. Logistic D. Exponential

A.competition would be the correct answer I believe

ANSWERED AT 16/02/2020 - 12:34 AM


QUESTION POSTED AT 16/02/2020 - 12:34 AM

What is the end result of mitosis and cytokinesis? why is this so important?

The end result of mitosis is a cell that is exactly the same as the original cell. So, if you have Cell A and cell A goes through mitosis and produces cell B... Cell B is an exact clone/replica of cell A with NO VARIATIONS. It's literally like cloning (Asexual reproduction).

Cytokinesis is part of the cell cycle, it is the last stage where a plate forms between both the cells to separate them from each other and to form two individual cells. 

Mitosis is important because it is a fast way of producing replicas of cells. Cytokinesis is important to differentiate or create boundaries between the cells. 

ANSWERED AT 16/02/2020 - 12:33 AM


QUESTION POSTED AT 16/02/2020 - 12:33 AM

Which cell uses energy

All cells use energy

ANSWERED AT 16/02/2020 - 12:26 AM


QUESTION POSTED AT 16/02/2020 - 12:26 AM

The selective breeding of wild mustard has _________ _________ and produced at least four other vegetable crops.

The answer you are looking for i believe is "Increased Biodiversity" 

ANSWERED AT 16/02/2020 - 12:24 AM


QUESTION POSTED AT 16/02/2020 - 12:24 AM

Depending on the organism, the number of in a cell may change.

Depending on the organism, the number of ________ in a cell may change.

Answer = Chromosomes

ANSWERED AT 16/02/2020 - 12:23 AM


QUESTION POSTED AT 16/02/2020 - 12:23 AM

Depending on the organism, the number of in a cell may change.

It chromosomes, I just took the assignment.

ANSWERED AT 16/02/2020 - 12:23 AM


QUESTION POSTED AT 16/02/2020 - 12:23 AM

What kind of energy do all cells need to survive

They need ATP to survive

ANSWERED AT 16/02/2020 - 12:15 AM


QUESTION POSTED AT 16/02/2020 - 12:15 AM

One of the major classes of organic compounds?

The four major classes of organic compounds are nucleic acids, lipids, carbohydrates and proteins.

ANSWERED AT 16/02/2020 - 12:14 AM


QUESTION POSTED AT 16/02/2020 - 12:14 AM

plants contain lignified conducting cells.

The answer would be vascular plants

ANSWERED AT 16/02/2020 - 12:11 AM


QUESTION POSTED AT 16/02/2020 - 12:11 AM

PLZZ HELP FASSSSST 1. Which of the following eyects would you expect if red blood cells were shaped like neurons? (1 point) They would not be able to move as easily through capillaries. They would more easily carry out gas exchange in the alveoli. They would not need to be transported through the body. They would become more eyective at picking up urea discarded by body cells. 2. Which of the following is not a function of the skeletal system? (1 point) supports the body works with other body systems to allow movement manufactures new blood cells sends signals to the brain 3. Which of the following body systems are involved in the first line of defense of the immune system against infection? (1 point) integumentary, digestive, respiratory nervous, circulatory, skeletal muscular, endocrine, urinary urinary, skeletal, integumentary 4. Which of the following sets of structures would be involved in ridding the body of unwanted urea? (1 point) sensory neuron, interneuron, spinal cord alveoli, atrium, cilia capillary, nephron, ureter brain, esophagus, small intestine 5. An infectious disease is a disease that (1 point) is caught because the weather turns cold. is caused by pathogens. can be spread only by bacteria. cannot be cured. 6. Which of the following statements is true regarding infectious agents? (1 point) Infectious agents are all too small to be seen without a microscope, and none can be classified as living. All infectious agents are living because they are all classified as microorganisms. Of all the infectious agents, only viruses are considered living because they actively inject their DNA or RNA into host cells. Viruses cannot be treated with antibiotics because they are not living organisms. 7. Which discovery in the 1800s led to the development of germ theory? (1 point) Vaccines could prevent a disease. Antibiotics exist that can be given to counteract an infection. Infection rates decline when health care professionals wash their hands in between seeing patients. Some diseases, such as cancer, are caused by chemical factors. 8. Follow a carbon atom in a piece of bread eaten by a boy. Which of the following describes a path that this atom could take? (1 point) mouth esophagus stomach large intestine blood body cell mouth esophagus stomach small intestine blood body cell mouth large intestine esophagus stomach blood body cell mouth esophagus small intestine stomach blood body cell 9. Which of the following sets of structures is innervated by the somatic nervous system? (1 point) esophagus, stomach, small intestine atrium, ventricle, arteries biceps, triceps, quadriceps diaphragm, bladder, large intestine 10. Which of the following cell types would you expect to increase in number azer a person becomes infected with a pathogen? (1 point) sensory neurons white blood cells epidermal cells red blood cells

I got the first 3 the answers are A,D, and C good luck with the rest

ANSWERED AT 16/02/2020 - 12:10 AM


QUESTION POSTED AT 16/02/2020 - 12:10 AM

The cell membrane is also called what

Plasma Membrane.

I agree with the first answer :)

ANSWERED AT 16/02/2020 - 12:10 AM


QUESTION POSTED AT 16/02/2020 - 12:10 AM