The observation that chloroplasts and mitochondria each contain their own dna and synthesize some of the proteins that function in these organelles suggests that chloroplasts and mitochondria __________. must divide each time the cell containing them divides are produced by the nucleus of the cell contain three sets of membranes are part of the endomembrane system

Answers

Answer 1

The answer to this question relates to the evolution of prokaryotic cells. The first simple prokaryotic cells likely evolved mitochondria from a cell that engulfed an aerobic prokaryotic cell, resulting in an endosymbiotic relationship, and gradual development into a mitochondrion. Something similar happened in regards to chloroplasts, except the original cell engulfed was probably a simple photosynthesising bacteria such as cyanobacteria.

Related Questions

A mineral's ability to reflect light is a test for _____

Answers

A luster test is used to see if the mineral reflects light.

The process by which receptor cells detect stimuli is called:

Answers

Final answer:

Receptor cells detect stimuli through a process called reception, which involves the activation of sensory receptors by stimuli. Following this, transduction converts the stimulus into a nerve impulse for the brain to process.

Explanation:

The process by which receptor cells detect stimuli is called reception. This is the initial step in the sensory perception process, which involves the activation of sensory receptors by various stimuli like mechanical stimuli (such as being bent or squished), chemicals, or temperature. These stimuli are detected within a receptor's receptive field, which can vary greatly across the different senses, such as touch, hearing, and vision. After reception, transduction occurs, which is the conversion of a stimulus into a nerve impulse that can be processed by the central nervous system.

Different types of sensory receptors are specialized to respond to specific stimuli present in the environment, and this response results in a change in the receptor cell's membrane potential. There are two main types of sensory transduction systems; one involves a neuron working with a sensory receptor cell or process, and the other involves a sensory nerve ending directly responding to stimuli. Sensory receptors can experience physical, chemical, or electromagnetic variations which they convert into membrane potential changes, known as transduction.

________ are multiple arteries that fuse in order to serve a single capillary network.

Answers

There are choices for this question namely:

convergents
connexons
portals
collaterals
arteriole beds

The correct answer is "collaterals". Collaterals are side branches of blood vessels (in this question, side branches of arteries) wherein it supplies the same capillary bed. Collaterals are mostly found pathologically in areas of ischemia and it functions to bypass the narrowed or part of the main artery.

Which of the following epochs was the warmest?

Answers

This question is incomplete. The options are:
a. Oligocene b. Eocenec. Miocened. Pleistocene

Option b is correct. This relates to the Paleocene-Eocene Thermal Maximum (PETM) which occured around 56 million years ago and was similar to modern-day climate change. Warming of more than 5 degrees Celcius occured over 15-20 thousand years because of input of more than 2000 gigatons of carbon into the atmosphere. The PETM resulted in mass deep ocean extinctions and mass terrestrial and shallow ocean diversification.

For most people, the more vigorous and longer lasting the exercise, the greater the health benefits.
a. True
b. False

Answers

false...................

Answer:

False :)

Explanation:

Antibodies that act against a particular foreign substance are released by ________. antibodies that act against a particular foreign substance are released by ________. medullary cords plasma cells t lymphocytes lymph nodes

Answers

The correct answer is "plasma cells".

Plasma cells are differentiated or mature B cells capable of producing antibodies against a particular foreign substance. B cells are stimulated to differentiate into plasma cells when it binds to two receptors of helper T cell; having the T cells "help" the B cells to differentiate to plasma cells. These T cells have the antigenic information passed to them by antigen presenting cells such as dendritic cells and these will be passed to the B cells and plasma cells will produce antibodies against this specific antigen.

What animals will share the most genes?
animals in the same class
animals in the same family
animals in the same order
animals in the same phylum

Answers

Animals in the same family

Answer:

Animals in the same family

Explanation:

Kingdom - Phylum -Class - Order - Family - Genus - Species

oxygen is a chemical that produces a green-blue color in Uranus and Neptune true or fals

Answers

Answer:

False

Explanation:

Uranus and Neptune are seventh and eighth planet of the solar system respectively. They have extremely cold temperature as they are very far from the sun. They are very similar in color. They appear green-blue in color. This is due to the presence of Methane in their atmosphere which absorbs all the red light and reflects green-blue light.

Thus, the given statement is false.

Why is the federal income tax a progressive tax?
@whpalmer4 @thomaster @iambatman @linda3 @DollyAcquah @Ashleyisakitty @kewlgeek555
Please help ?

Answers

A progressive tax means that as you earn more, you get taxed at a higher rate. The alternative is a regressive tax, which means you get taxed more if you have less. There are different brackets of income for a federal tax calculation. People who made $1,000,000 pay more taxes as a percentage of their income than people who made only $50,000, for exaple.

Water is warmed by the sun and ______. then it is cooled and ____. then it is brought back to earth in the form of _____.

water and nutrients that are not cycled are stored in _____.

Answers

Water is warmed by the sun and is Evaporated. Then it is cooled and Condensed.
Then it is brought back to earth in the form of Rain!
Water and nutrients that are not cycled are stored in Reservoir!

Have an nice day ^_^

water is warmed by the sun and evaporates, then it is cooled and condenses, then it is brought back to earth in the form of precipitation.
water and nutrients that are not cycled are stored in aquifers.

Which molecule will cross a cell membrane most easily? select one:
a. a large molecule such as hemoglobin
b. a small molecule such as glucose
c. genetic material such as dna
d. a highly polar molecule such as water
e. a lipid-soluble substance such as testosterone?

Answers

c because you have to have genetic material .

Please help!! Will award Brainliest and 50 pts (:

1.Create a strand of mRNA that complements the New Bottom Strand of DNA. The 1st codon has been done for you.
Remember: There is no thymine in RNA!!

ORIGINAL TOP STRAND
ATG – GGG – CCA – GTT – GAA – AAA – ATT – GCA – GAA – CTT – TGA

NEW mRNA STRAND

AUG - ____ - ____ - ____ - ____ - ____ - ____ - ____ - ____ - ____ - ____

TAC - ____ - ____ - ____ - ____ - ____ - ____ - ____ - ____ - ____ - ____

NEW BOTTOM STRAND

STEP 4: TRANSLATION

1.Copy the New mRNA strand here from Step 3.

2.Create a strand of anticodons by using the mRNA strand as a template.

3.Using the amino acid chart, create a strand of amino acids using the new mRNA strand as a template.

ANTICODONS
UAC - ____ - ____ - ____ - ____ - ____ - ____ - ____ - ____ - ____ - ____

AUG - ____ - ____ - ____ - ____ - ____ - ____ - ____ - ____ - ____ - ____
NEW mRNA STRAND

Answers

Bottom Strand of DNA. The 1st codon has been done for you.

Remember: There is no thymine in RNA!!

While watching television in the dayroom a client who has demonstrated withdrawn, regressed behavior suddenly screams, bursts into tears, and runs from the room to the far end of the hallway. what is the most therapeutic intervention by the nurse?

Answers

walking to the end of the hallway where the client is standing.

Answer:

The answer is: Go for the client and find out what happened to him.

Explanation:

The intervention of the nurse, first go for him to the hallway, second try to talk to him to explain the cause of that reaction, and third determine with the information if he need any tranquilizer or is not necessary.

The answer is: Go for the client and find out what happened to him.

Which cell types remain in a non-dividing stage and do not complete the mitosis process?

Answers

Answer;

Muscle cells and nerve cells

Explanation;Mitosis is a type of cell division which occurs in the somatic cells or the body cells where cells divides to generate daughter cells that are identical to the parent cells.All the body cells undergo mitosis a process that enhances growth, however, the muscle cells and the nerve cells are specialized cells that remain in a non-dividing stage and do not complete the process of mitosis. Nerve cells for example they can never be created again once they die.These cells, nerve cells and muscle cells lack repair mechanisms for injuries. Since they are specialized cells they loose the ability to divide by mitosis.

Select the reasons why viruses, prions, and viroids are not classified as living organisms. they are not able to reproduce independently. they are only motile in the early stages of growth. they do not use energy for metabolism of any kind. their virulence is maintained by non-living cultures.

Answers

They are not able to reproduce independently
They do not use energy for metabolism of any kind
Their virulence is maintained by non-living cultures

Hope this helps. ^.^

Answer:

They are not able to reproduce independently

They do not use energy for metabolism of any kind

Their virulence is maintained by non-living cultures

Explanation:

Scientists consider the testing phase of the cell cycle because they can’t see a visible change during this phase

Answers

Scientists consider the INTERPHASE the resting phase of the cell cycle because they can not see a visible change during this phase.
The interphase refers to the interval in the cell cycle between two cell divisions. During this stage, the individual chromosomes in the cell can not be distinguished. Although scientist can not see any outward visible change during this phase, but it is actually the time when the DNA inside the nucleus is replicated.

Which is an important part of the endocrine system but is not an endocrine gland?

Answers

The hypothalamus. :)

The pancreas is an important part of the endocrine system but is not an endocrine gland.

The pancreas plays a crucial role in regulating blood sugar levels and is a vital component of the endocrine system. It contains clusters of cells called the Islets of Langerhans, which house two important types of cells: alpha cells that secrete glucagon and beta cells that secrete insulin. These hormones are essential for regulating glucose metabolism and maintaining blood sugar within a healthy range.

When blood sugar levels rise after a meal, beta cells release insulin to help cells absorb glucose for energy. Conversely, when blood sugar levels drop, alpha cells release glucagon to stimulate the release of stored glucose from the liver. While the pancreas primarily functions as an exocrine gland, producing digestive enzymes, its role in regulating blood sugar exemplifies its critical endocrine function.

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"the valves located between the atria and ventricles are known as the ________ valves."

Answers

The atrioventricular valves.

-WILL GIVE BRAINLIEST!!-
In 1831, Charles Darwin visited the Galapagos Islands. While observing the giant land tortoises that lived on these islands, Darwin noted that the shape of the tortoise shell varied depending on which island the tortoise lived. Tortoises on one island had round shells, for example, whereas tortoises on a neighboring island had more flattened, saddle-shaped shells. Which statement BEST summarizes Darwin's explanation for these differences?
A) Random mutations caused the shape of the shells to fluctuate periodically.
B) The shape of the tortoise shell varied because the predators on the islands were all similar.
C) The particular shape of the shell was best suited for the island on which the tortoise was living.
D) Tortoises who used their shells in special ways caused the shells to become larger, rounder, or flatter.

Answers

I think the answer would be C. Hope this helps.

The corrects answer is C.

Prophase has a series of checkpoints that determine whether a cell will undergo all stages of mitosis. true or false

Answers

The answer is false. All cells that had undergo in the beginning of mitosis, will be undergoing to the whole stages of mitosis. Mitosis is the part of the cell cycle, wherein it results into equally distributed chromosomes and separated two new nuclei. Typically there are five stages of Mitosis.

In some ecosystems, succession increases the chance of disturbance. in these ecosystems, __________.

Answers

The answer is that in these ecosystems, climax community may not occur. Ecological succession is the gradual process in which ecosystems change and develop over time, thus nothing remains the same and also the habitats are constantly changing. There are two main types of biological successions;primary succession which is an opening of a pristine habitat and the secondary succession which is a response to a disturbance.

There are ecosystems like cyclic succession that has a concept of community ecology that may result to increase chance of disturbance when climax communities may not occur. This is a pattern of a small number of species that tend to replace each other over time in the absence of large-scale disturbance, long-term physical changes in the environment and an end-state climax community with stable species compositions.

Which of the following is not a way in which human events can change the Earth’s surface?
a.
draining wetlands
b.
agriculture
c.
glacial melting
d.
pesticide use

Answers

Answer c Glacial melting is not an event caused by the human activities. All the other events like draining wetlands, agriculture, pesticide use are caused by human activities. Glacial melting occurs when the glaciers situated at high latitudes melt due to warming which leads to rise in sea level and eventually inundation of the low lying coastal areas

D.pesticide use because nuts are nuts

Which sentences describe decomposers in a food chain

Answers

1 and 4. they both state what decomposes do and mean to the food chain

Bacteria, fungus, worms, and snails recycle the waste of dead materials and give back nutrients to the ecosystem, according to the definition of decomposers in a food chain. So, the correct option is D.

What are Decomposers?

Organisms known as decomposers convert decayed organic matter, such as that of dead plants and animals, into more basic substances like nutrients and minerals. Following their release back into the ecosystem, these less complex substances are utilised for growth and development by other organisms.

By dissolving decayed organic debris and returning the nutrients to the soil, which plants can use to thrive, decomposers perform a critical function in the ecosystem. By preventing nutrients from being lost and allowing them to be reused by other living things, this recycling mechanism aids in maintaining ecological equilibrium.

Bacteria, fungus, worms, and snails recycle the waste of dead materials and give back nutrients to the ecosystem, according to the definition of decomposers in a food chain.

Therefore, the correct option is D.

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Your question is incomplete, most probably the complete question is:

Which sentences describe decomposers in a food chain

1- they are the final link in the energy flow in a food chain or a food web. They are fungi and animals that feed on dead organic matter

2-Plants produce food or energetic from raw materials

3. Plants are also known as autotrophs because they can produce organic compounds from inorganic chemicals

4: bacteria, fungi, worms, and snails recycle the garbage of dead matter and give back nutrients into the ecosystem

A succulent plant is grown in a low light situation so that it is very tall. pale, and has few leaves compared to its siblings grown in full sun. Is this an evolutionary change or not, and why?

Answers

This is not an evolutionary change. This is called etiolation which is a process by plants grown in the absence of sunlight. This can manifested by plants through weaker stems, fewer leaves, longer internodes and pale to yellowish color of plants. This is not an optimum condition for plants as they cannot adapt in the changes in the enviroment.

Not evolution because of no genetic changes or phenotypic change

In a living organism, evolution is growing in the heritable traits of biological communities over succeeding generations. A mutation that is a permanent modification in the DNA chain that makes up a gene, so that the progression varies from what is discovered in maximum plants. On the other hand, phenotypic variation is due to underlying heritable genetic modification. This is a major requirement for development by natural preference which is not found in succulent plant.

"information is transferred from the nucleus to ribosomes via ______"

Answers

mRNA are used to convert genetic information from nucleus to cytoplasm. mRNA are also called messenger RNA.

Information is transferred from the nucleus to ribosomes via mRNA

How to determine the portal

In eukaryotes, ribosomes get their orders for protein synthesis from the nucleus, where portions of DNA (genes) are transcribed to make messenger RNAs (mRNAs).

An mRNA travels to the ribosome, which uses the information it contains to build a protein with a specific amino acid sequence.

Transport of proteins and RNA between the nucleus and cytoplasm is accomplished by soluble transport factors that bind their cargoes and carry

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What are the most basic components of all ecosystems? what are the most basic components of all ecosystems? communities of organisms nutrients and energy the living, or biotic part, and the abiotic producers, consumers, and decomposers volcanoes, wind, oceans, and other abiotic parts submit?

Answers

cells and the stems of them

Which of these is not a sign of brain concussion? unequal pupil size increased appetite deafness restlessness?

Answers

I think the answer is increase appetite. A brain concussion is a mild traumatic injury which may occur after an impact on the head or after a whiplash-type injury that causes the head and brain to shake quickly back and forth. It is the most common and least serious type of traumatic brain injury. Its symptoms include headache, clumsiness, confusion, sensitivity to light and noise, among others.

Asexual reproduction
Sexual reproduction
Mitosis
Meiosis
Chromosome
Cell division
Clone
Budding
Acquired trait
Recessive Trait
Dominant Trait
Co-Dominant
what is the definitions for these plz

Answers

i) Asexual reproduction is a type of reproduction that involves an individual reproducing without involvement with another individual of that species. e.g. in bacteria a cell divides in to two daughter cells through a process called binary fission. They include; budding, binary fission, vegetative propagation and spore formation among others.

ii) Sexual reproduction : is a type of reproduction that occurs by combining genetic information from two individuals of different types. This mainly occurs in organisms, one sex (male) produces a small percentage of motile which travels with a larger stationary gamete produced by the female (ovum).

iii) Mitosis is a process of cell division that involves a parent cell or original cell diving to give two daughter cells with equal number of chromosomes. The process takes place in the somatic cell (body cells) where a diploid (2n) parent cell yields two diploid daughter cells.

(iv) Meiosis is the type of cell division which involves diving a cell division where a parent cell (diploid 2n) divides into four daughter cells which are haploid, n. The daughter cells contain half the number of chromosomes as the parents. This process occurs in the gametes cell. The process is important as it ensures that there is genetic variation and hybrid vigor among the off springs.

v) Chromosomes; is a DNA molecule with part or all of the genetic material (genome) of an organism. Most eukaryotic chromosomes include packaging proteins which, aided by histone proteins, bind to and condense the DNA molecule to prevent it from becoming and unmanageable tangle.

vi) Cell division; Cell division is a process which involves a cell gives rise to other cells. when cells divide they make new cells. A single cell divides to make two cells and these two cells then divide to make four cells and the process continue. The process is called cell division or cell reproduction since new cells are formed when old cells divide. There two major types of cell division namely mitosis and meiosis.

vii) Clone; cloning is the process of producing similar populations of genetically identical individuals that occurs in nature when organisms such as bacteria, insects, plants or animals reproduce asexually. Thus, a clone is an identical genetic copy of either DNA, a cell, or a whole organism.

viii) Budding; Budding is a type of asexual reproduction in which a new organism develops from an outgrowth or bud due to cell division at one particular site. The new organism remains attached as it grows, separating from the parent organism only when it is mature, leaving behind scar tissue. A good example is budding in yeast.

ix)Acquired trait; this is a characteristic or a trait that produces a phenotype that is a result of an environmental influence. Acquired traits are not coded for in the DNA of an individual and therefore cannot be passed down to offspring during reproduction. They include things such as calluses on fingers, larger muscle size from exercise or from avoiding predators.

x) Recessive trait; Recessive traits are traits which can be carried in a person's genes without appearing in an individual. It is masked by a dominant gene. For example, a dark-haired person may have one gene for dark hair, which is a dominant trait and one gene for light hair, which is recessive.

xi) Dominant trait; When a trait is dominant, only one allele is required for the trait to be observed. A dominant allele will mask a recessive allele, if present. A dominant allele is denoted by a capital letter. example in humans is the dark hair, such that if one parent contributes a gene for dark hair and the other contributes a gene for light hair, the child will have dark hair.

xii) Co-Dominant, Co-dominance is a form of dominance where the alleles of a gene pair in a heterozygote are fully expressed. This results in offspring with a phenotype that is neither dominant nor recessive. A typical example is the ABO blood group system, where a person with blood group AB (heterozygous), both A allele and B allele are equally expressed.

While eating a celery stalk and you are picking stringy parts of the plant out of your teeth, you realize that the stringy parts provide support but are flexible. the stringy parts of the celery you eat are composed of what type of cells?

Answers

Cells in the collenchyma.

Final answer:

The flexible and supportive stringy parts of a celery stalk are made up of collenchyma cells. These cells, alive at maturity and often found beneath the plant's epidermis, provide structural support. Despite being indigestible for humans, consuming this cellulose is beneficial as dietary fiber.

Explanation:

The stringy parts of the celery that you eat, known for their flexibility and support, are composed of a type of plant cells called collenchyma cells. These cells are elongated with unevenly thickened walls, providing structural support, especially to the stem and leaves. They are usually alive at maturity, and typically found beneath the epidermis (the outer layer) of the plant.

An important fact to note is that though we ingest these cells while eating celery, human beings can't digest cellulose, the primary substance in plant cell walls. The indigestible portion is referred to as dietary fiber, providing health benefits such as promoting a healthy digestive tract and possibly reducing the risk of heart disease and certain types of cancer.

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..... responsible for 50% of the earth photosynthesis which produces a significant amount of oxygen

Answers

Oxygen is essential to enabling many of the Earth’s life forms to survive -- without access to oxygen, humans can’t live for more than a few minutes. The air that enters human lungs contains about 21 percent oxygen. The process responsible for producing most of the Earth’s oxygen is known as photosynthesis. In this process, plants and certain other organisms convert sunlight into oxygen and other products.

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How many servings would you get from a boneless ham weighing 4.6 pounds? Lobbyists are hired by companies to influence legislation to meet a company's goals. They ask for things needed to program plans related to health care, and come together as _____. Completar Fill in the blanks with the appropriate preterite or imperfect forms of the verbs in parentheses. 1-Eran las dos de la maana cuando (blank) (sonar) el telfono. 2-changed La computadora se apag mientras Ricardo (blank) (navegar) en Internet. 3-changed Horacio (blank) (hablar) por telfono mientras coma un sndwich. 4-changed De nia, Paula (blank) (lastimarse) la pierna con frecuencia. 5-changed Ayer, despus de la clase, nosotros (blank) (ir) al cine. 6-changed Cuando Carolina (blank) (ser) joven, lea mucho. 7-changed (blank) WILL AWARD BRAINLEST ASAPHow did Floridians vote during the presidential election of 1860? A.They voted for the pro-slavery Southern Democrat. B.They voted for the moderate Republican.. C.They were split between Republicans and Southern Democrats. D.Their votes went uncounted due to election fraud. Ann owns two acres of trees. Which factors of production would Anns situation fall under? (Select all that apply.) 1-entrepreneurship 2-labor 3-land 4-capital Every five years in march, the population of a certain town is recorded. In 1995,the town had a population of 4,500 people. From 1995 to 200, the population increased by 15%. From 2000 to 2005,the population decrease d by 4%. What was the town's population in 2005? How did the strained allied relationships, particularly those of the united states and the u.s.s.r. contribute to initiating the cold war? Which sources of information would be the most inclusive for an entrepreneur determining information to complete financial statements? Suppose MV = 60 & PQ = 120. Suppose Q and V are held constant. This means ________. A. both M & V must double B. V must double C. M must double The rider attached to the Indian Appropriations Act of 1889 gave __________ the right to __________ the Unassigned Lands for settlement. Whose whole-hearted acceptance of a new fashion points towards it gaining popularity in the future? fashion followers fashion designers fashion forecasters fashion leaders Which are the solutions to the quadratic equation 4x^2=64? A. x=-16 and x=16 B. x=-8 and x=8 C. x=-4 and x=4 D.x=-2 and x=2 The ______ system draws energy for the battery to create high voltage surges to set off combustion in the engines cylinders. How does Tavernier use the elements of art in this painting? which arrow on the illustration represent the largest reservoir of nitrogen on earth y=x-8/x^2+4x-5 find any points of discontinuity for the rational functiona. x=5, x=1b. x=-5, x=1c. x=8d. x=5, x=-1 electromagnetic induction the lowest elevation in Long Beach California is 7 feet below sea level the elevation of Death Valley is about 40 times lower than the elevation of Long Beach what is the approximate elevation of Death Valley[tex] - 7 - 40 [/tex] Written &Oral Traditions1) How are oral traditions important to learning?A) They teach people how to speak clearlyB) They transmit history and cultureC) They show that learning can be fun D) They teach respect for storytellers2) What is one way we know storytellers had wonderful memories?A) They could recite entire genealogiesB) They remembered stories about famous kingsC) They knew what the children enjoyed mostD) They knew many stories How did president theodore roosevelt's "square deal" epitomize the notion that the federal government should serve as a steward protecting the public's interests? in addition, how did the goals and reform agenda of the progressive era manifest themselves during the presidential administrations of roosevelt, taft, and wilson?