which of the following structures do all eukaryotic cells contain?
Answers
Answer:
A) A nucleus
Explanation:
Nucleus is the structure that all eukaryotic cells contain as represented by the diagram. Nucleus is present inside the cell and located in the center of the cell.
What is nucleus?Nucleus is defined as a membrane that is enclosed cell organelle inside a cell and it contain chromosome.The main function of nucleus is to regulate and controls the activities of the cell. It is also known as brain of the cell as it regulates and controls all the function of the cell.
The structure of nucleus is that it contains a structures such as nuclear envelope, nucleoplasm, or it is also known as nucleus sap or nuclear matrix, nucleolus and chromatin.
Nucleus stores the DNA of the cell and maintain its integrity, and provide it for the process of transcription, traslation and replication.
The nucleus contain nucleolus and the region is black and chromosomes have beeds like structure on them and they are known as genes that helps to pass a particular character from one generation to other generation.
Therefore, Nucleus is the structure that all eukaryotic cells contain as represented by the diagram. Nucleus is present inside the cell and located in the center of the cell.
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Related Questions
which reactions add a water molecule to break a polymer into smaller parts?
Answers
A _______ climate has moderate rainfall and moderate temperatures which both remain constant throughout the year.
Answers
Answer:
temperate climate
Explanation:
Temperate climates are generally defined as environments with moderate rainfall spread across the year or portion of the year with sporadic drought, mild to warm summers and cool to cold winters.
Which type of transport is shown in the figure below?
Answers
I believe that is exocytosis
How do enzymes affect the reactions in which they take part?
A.Most enzymes slow down chemical reactions.
B.Enzymes decrease the activation energy of the reaction.
C.Enzymes increase the activation energy of the reaction.
D.Enzymes are converted into products in the reaction.
Answers
Answer:
B. Enzymes decrease the activation energy of the reaction :)
Explanation:
Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.
How do cells maintain homeostasis in different environmental conditions?
Answers
[tex]\huge\pink{Answer}[/tex]
Homeostasis at the cellular level is critical to maintaining homeostasis in the whole organism. Animal cells have several ways to help them stay in equilibrium.
Cell Membrane and Phospholipid BilayerThe cell membrane functions as a boundary separating the internal cellular environment from the external environment. It is selectively permeable which means it lets some materials pass through but regulates the passage of other materials.
Ion Transport MechanismsThere are several ion transport mechanisms within the cell membrane that function to maintain proper levels of solutes inside and outside the cell. One of the most important is the sodium-potassium ATPase pump.Another critical pump is the calcium ATPase pump which moves calcium out of the cell or pumps it into the endoplasmic reticulum. This transfer of ions back and forth across the membrane creates a membrane potential that drives the ionic currents.
Cellular CommunicationThere are three basic kinds of intercellular communication used to maintain homeostasis. The first is when direct contact occurs between the membranes of two cells and they signal to each other. The second is when cells use short range chemical signals over short distances. The third is long ranged signals that are secreted into the bloodstream and can be carried anywhere in the body.
HOPE IT HELPS ☺️After trying to push the heavy barrel up the ramp, the man decides to use a shorter ramp leading up to the landing. Will this make it easier or more difficult to roll the barrel up the ramp? Explain. A) More difficult because the steeper slope requires more effort force to overcome gravity. B) More difficult because the barrel's mass will increase. C) Less difficult because the steeper slope requires less effort force to overcome gravity. D) Less difficult because the effect of the earth's gravity on the barrel will decrease.
Answers
Answer:
A)
Explanation:
because the steeper slope will make it harder to overcome gravity
The two sides of the DNA ladder are connected down the middle by many _______ bonds. *
Answers
Answer:
non-covalent hydrogen bonding between paired bases :)
Explanation:
have a wonderful weekend stay safe!
Answer:
Hydrogen
Explanation:
The two sides of a dna ladder are connected by a row of hydrogen bonds
When does species richness increase at the fastest rate? Why is this possible?
Answers
Explanation:
As temperature increases, species richness tends to increase up to a maximum, beyond which water deficits then begin to depress richness
As temperature of the waterbody increases, the species richness tends to increase up to a maximum level, beyond this value water deficits which begins to depress the species richness.
What is Species Richness?Species richness is the number of different species present within a defined region. Species richness is commonly described by an index known as the Shannon's index 'H'.
Temperature has an important influence on the distribution of organisms in an area because it determines the physical state of the water body. Most organisms cannot live in conditions when the temperature remains below 0°C or above 45°C. The organisms cannot adapt to these extreme temperature ranges.
Temperature has been shown to increase the species interactions by increasing attack rate on species.
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8. Explain why young adults coming into the ER with brain
swelling are often asked about drug use?
Answers
Answer:
Over the past several years, the misuse of opioids – ranging from prescription painkillers to black tar heroin – has reached epidemic proportions. In 2015, the Media Research Center reported that drug overdoses had surpassed motor vehicle accident fatalities nationwide for the first time. Since 1999, nearly 200,000 Americans have died from a prescription drug overdose. Heroin use increased in response to advocate and lawmaker efforts to restrict overprescribing, doctor shopping, and opioid sales via online pharmacies. As prescription drug overdoses fell from 2010 to 2015, the number of heroin overdoses tripled.
Opioids are synthetic or semi-synthetic substances originating from the poppy plant. Examples include heroin, Fentanyl, and prescription opioid painkillers, all of which operate in the same fashion, albeit with varying degrees of strength. Synthetic opioids are among the most dangerous and addictive. The synthetic opioid Fentanyl, for example, is 25 to 50 times more potent than heroin, which is a semi-synthetic substance.
The National Institute on Drug Abuse explains, “[Opioids] act by attaching to specific proteins called opioid receptors, which are found on nerve cells in the brain, spinal cord, gastrointestinal tract, and other organs in the body.” When substances attach to these receptors, they change how the brain perceives pain and instead produce feelings of euphoria. They also slow essential body functions, such as heart rate and breathing.
The____
gland controls water balance, growth, and blood pressure
pituitary
Thymus
thyroid
pancreas
Answers
Answer:
The pituitary gland controls water balance, growth and blood pressure.
Explanation:
The pituitary gland is also called hypophysis, and is a small gland located in the skull that is responsible for secreting hormones and coordinating the activity of other glands.
Hypophysis is usually divided into two portions, adenohypophysis or anterior lobe and neurohypophysis in posterior lobe. Among other functions, the pituitary gland is in charge of
Water balance and blood pressure, through the antidiuretic hormone or ADH secreted by the neuro-pituitary. Growth, through the secretion of growth hormone or GH, secreted by the somatotropic cells of the adenohypophysis.This gland is also responsible for the secretion of oxytocin and other hormones in charge of regulating endocrine glandular activity.
Regarding the other options:
Thymus is a gland present in children and related to immune function. Thyroid is responsible for secreting hormones that control basal metabolism. Pancreas has exocrine and endocrine function, producing digestive enzymes and insulin and glucagon, respectively.Answer:
A.pituitary
Explanation:
. Unlike animal cells, plant cells have ________________¬¬¬¬¬¬¬¬¬¬, vacuoles, and a ____________ wall.
Answers
Answer:
1. chloroplasts
2. cell wall
Explanation:
1. plants carry out photosynthesis which chloroplasts help. so only plant cells have them, animals do not use photosynthesis
2. animal cells only have a cell membrane. only plant cells have a cell wall.
A longitudinal wave moves energy that is_____ to the direction of the wave’s movement.
Answers
Answer:
The answer would be parallel to the direction of the wave's movement I believe :)
Answer:
parallel
Explanation:
e2021
What would they be called? I don't know/ I am multitasking and don't want to screw it up.
Answers
Answer:
Endotherms
Explanation:
It says internal temperature and I know that endo means in. Also Google told me so. (I had to double check my answer)
True or false The smallest particle of an element is called a Atom
Answers
Answer:
True
Explanation:
Answer: True
Explanation:
im also taking biology lol, i remember writing that in my notes last chapter.
3. What is the word equation for Photosynthesis?
Answers
Answer:
Explanation:
is as follow 6CO2+6H20+(energy)--CH12O6+6O2 Carbon dioxide +water +energy from light produces glucose and oxygen.
Note: Your teacher will grade your responses to questions 24‒25 to ensure you receive proper credit for your answers. What circumstances would cause an organism to adapt? In your answer, be sure to explain the differences between both short- and long-term adaptations. Use an example to explain your answers.
Answers
Answer:
Explanation:
Usually, adaption is triggered by the need to survive and reproduce. Short-term adaption is usually caused by a sudden change in circumstance which causes the need for behavior or tactics to change based on previous experience or knowledge. Long term adaption is different, this usually occurs naturally over the course of many decades in order for the species to have better chances of surviving in the changing environment that they are living in.
Which of the following is true about nuclear fusion?
t is easy to implement.
It produces less energy than nuclear fission.
It produces more energy than nuclear fission.
It has the ability to occur easily in everyday life.
Answers
Answer:
I think its C
It produces more energy than Nucleur fission
Explanation:
How many neutrons are in the nucleus of a nitrogen atom?
Answers
Answer:
7 Neutrons
Explanation:
There are 7 Neutrons, 7 Protrons, and 7 Electrons, in Nitrogen. If you are unclear, try looking at the periodic table. :)
how can protein from a cheeseburger become a completely different protein molecule inside you that your body needs
Answers
Answer:
It depends on what you have consumed prior to eating the cheeseburger. Amino acids (building blocks of protein) are found in hamburgers. Your body however may need iron, or potassium. It really just depends ;)
Explanation:
What best describes a river system?
A. the network that includes all the waters feeding into a main river and all the waters branching out from it
B. the source of a river and all the tributaries feeding into the river
C. the source and mouth of a river
D. all the distributaries flowing away from a river and the mouth of the river
Answers
Answer:
i think it’s (A)
Explanation:
Which statement best describes wavelengths of sunlight that are longer than 700 nanometers?
Answers
Answer:These wavelengths are longer than the wavelengths of visible light.
These wavelengths form the infrared part of the spectrum.
Explanation:
Answer: These wavelengths form the infrared part of the spectrum.
Explanation: It's the answer for Edgenuity
Which biomolecule is Carbon prominent in?
Answers
Answer:
carbohydrates
Explanation:
Likewise, carbohydrates, which are made up primarily of molecules containing atoms of carbon, hydrogen, and oxygen, are essential energy sources and structural components of all life, and they are among the most abundant biomolecules on
11. A cell's genetic material is contained in the A. plasma membrane B. nucleus C. unicellular bacteria D. phospholipid bilayer
Answers
The average temperature of the surface of Earth has increased approximately 1°C in
the past century. Which reason best explains this increase in temperature?
Answers
Th average temperature of the earth has been increased as a result of
higher level of carbon dioxide and other greenhouse gases in the
atmosphere.
The carbon dioxide and other greenhouse gases has increased over the
past century as a result of the emission of these gases by automobiles,
industries etc.
These gases deplete the ozone layer which is responsible for the
absorption of sun rays .When this happens, the sun rays reaching the earth
will be increased thereby causing an increase in temperature.
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Where do you get the dependent and
independent variables?|
Answers
Answer:
answer below
Explanation:
The norm is to place the independent variable on the “x”or horizontal axis and the dependent variable on the “y” or vertical axis.
Which of the following describes a virus?
A. A virus does not have a cell wall, nucleus and eats.
B. A virus has cell, a nucleus and does not eat.
C. A virus does not eat, use energy or have cells.
D. A virus does not have cell, produces carbon dioxide and uses oxygen.
Answers
The simplest virions consist of two basic components: nucleic acid (single- or double-stranded RNA or DNA) and a protein coat, the capsid, which functions as a shell to protect the viral genome from nucleases and which during infection attaches the virion to specific receptors exposed on the prospective host cell.
Answer:
A
Explanation:
A virus has no nucleus or cell wall but it eats.
Which abiotic factors would you expect to influence the growth of trees in the mountains?
Number of deer and insects
Types of trees and plants
Rainfall and the location on the mountain
Predator and prey population
Answers
Answer:
Rainfall and the location on the mountain
Explanation:
This is the answer because:
Rainfall highly helps the trees on the mountains grow. The location of a tree also matters a lot because it has to be in a spot where it can reach sunlight and lots of rain.
Therefore, the answer is Rainfall and the location on the mountain.
Hope this helps! :D
In which form of reproduction will pieces of the parent develop into identical copies of the parent?
1.) vegetative reproduction
2.) binary fission
3.) budding
4.)fragmentation
Answers
Answer:
4. Fragmentation
Explanation:
Just took the test & Binary Fission was wrong
Budding. Organisms reproduce by splitting off new individuals from existing ones, resulting in genetically identical parent and daughter organisms.
What do you mean budding?Budding is an asexual mode of organism formation. A new organism is formed from a small part of the parent's body during this process. A newly formed bud separates to form a new organism. The newly formed organism remains attached as it grows.To create an advantageous variety (cultivar) and rootstock combination, a single bud from a desirable plant is inserted into an opening in the bark of a compatible rootstock.Budding, also known as bud grafting, is a type of vegetative or clonal plant propagation that produces an exact replica of the parent plant. Chip budding and T budding are two slightly different methods of budding.To learn more about : Budding
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(a) What is pollution?
(b) Name two (2) pollutant
(c) State four (4) effects of
(d) Explain four (4) ways of
(e) Mention two (2) harmful
Answers
Answer:
(a)the presence in or introduction into the environment of a substance which has harmful or poisonous effects.
(b)ozone
carbon monoxide
(c)air pollution cause headaches, dizziness, and nausea. ... Long-term health effects from air pollution include heart disease, lung cancer, and respiratory diseases such as emphysema
(d)=>Minimize air pollution from cars.
=>Walk, bike or use public transportation.
=>Save energy.
=>Maintain your wood stove or fireplace.
(e)air pollution cause headaches, dizziness, and nausea. ... Long-term health effects from air pollution include heart disease, lung cancer, and respiratory diseases such as emphysema
How has the development of a pine and then a hardwood forest affected populations of shrubs?
A The development of the two types of forests has negatively affected populations of shrubs by decreasing the amount of pollinators in the area.
B The development of the two types of forests has positively affected populations of shrubs by increasing the amount of water available to shrubs.
С The development of the two types of forests has negatively affected populations of shrubs by decreasing the amount of space available to shrubs.
D The development of the two types of forests has positively affected populations of shrubs by increasing the amount of sunlight in the area.
Answers
Answer: Option C.
The development of the two types of forest has negatively affected the populations of shrubs by decreasing the amount of space available for shrubs
Explanation:
The development of the two types of forest has negatively affected the populations of shrubs by decreasing the amount of space available for shrubs because pine and hardwood are huge trees bigger than shrubs and occupy space. As they occupy space the received most of the sunlight, their roots is very extensive and draw water and nutrients from the soil which makes these resources not very much available for shrubs and hence it drastically affected the populations of shrubs. Because of their heights, wideness and big leaves, little sunlight gets to shrubs and hence shrubs photosynthesis is reduced.
The removal of one seral stage to another is called ecological succession.
The place which is used by the shrubs is now used by the tree and give the competition for the land. The development of the two types of forest has negatively affected the populations of shrubs by decreasing the amount of space available for shrubs.
The development of the two types of forest has negatively affected the populations of shrubs by decreasing the amount of space available for shrubs because pine and hardwood are huge trees bigger than shrubs and occupy space.
As they occupy space they received most of the sunlight, their roots are very extensive and draw water and nutrients from the soil which makes these resources not very much available for shrubs, and hence it drastically affected the populations of shrubs.
Because of their heights, wideness, and big leaves, little sunlight gets to shrubs, and hence shrub's photosynthesis is reduced.
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