A major change that occurred in the evolution of eukaryotic cells from prokaryotic cells was the development of?

Answers

Answer 1
A membrane bound nucleus (or just a nucleus in general)

Related Questions

Which of the following is equivalent to 36 + 8

Answers

Answer:

i- its 44, my mans just add up the answers and see which one equals 44

Explanation:

Carbon dioxide is a naturally occurring gas that is vital to plant and animal life, yet carbon dioxide emissions from burning of fossil fuels are expected to result in significant climate change within 100 years. Should carbon dioxide be considered to be a pollutant? Support your position by providing reasons why or why not.

Answers

Answer:

Yes, it should be considered a pollutant

Find the reason below

Explanation:

A pollutant is any substance that poses threat or causes harm to the sustainability of the environment. As rightly stated in this question, carbon dioxide (CO2) is a naturally occuring gaseous constituent of our atmosphere. It is vital to both animal and plant life as it is utilized by plants to synthesize their food (glucose), which is the starting point for the flow of energy.

Although CO2 plays a major role in sustaining life, it is also a major cause of GLOBAL WARMING. Carbon dioxide is considered the most important greenhouse gas as it has the ability to trap and emit heat, contributing to the global rise in atmospheric temperature. This causes a lot of harm and environmental disturbance, hence, CO2 despite its beneficial purpose, should be considered a POLLUTANT.

Describe (briefly) what natural selection is (also, remember how I tend to describe natural selection)

Answers

Answer:

the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin, and it is now regarded as be the main process that brings about evolution.

What do you already know about the rotation and the revolution of the Earth?

Explain your Answer

Answers

Answer:

I already know that the earth rotates on its axis because of magnetic forces. I also know that the earth revolves around the sun because of the pull of the sun's gravity.

Self-portraits can help you learn about positioning people in a photograph.

True
False

A camera's self-timer takes a picture after a certain amount of time has passed.

True
False

Answers

1.) True

The reason this is true is because adjusting the camera allows you to get an understanding of how someone else should look or how they would likely look best when photographed. It also gives an understanding of how a camera should be aimed to get the best result.

2.) True

While many cameras have this feature, most are configured to only use this feature when the photographer selects it. This feature allows the photographer to adjust the camera in case they feel something isn't quite right with it, and it also allows them to get into the picture themselves if they feel they want to.

Hope this helps you, and have fun with whatever it is you are doing with your camera.

-Sayonara

Answer:

it is true for a and true for b. (aka a is question and b is question 2.)

Explanation:

HELP ME PLEASE ? Helppppppppppp

Answers

Let me get a quick answer

PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.

Answers

I think the answer is A

Use cell as your reference point to outline the diversity of living organisms.​

Answers

Biodiversity or biological diversity means the variety of living organisms present on a particular region. There are about 20 lac organisms known on the Earth which differ from one another in external form, internal structure, mode of nutrition, habitat, etc.

Calcitriol is made from

Answers

Calcitriol is, strictly, the 1-hydroxylation product of calcifediol (25-OH vitamin D3), derived from cholecalciferol (vitamin D3), rather than the product of hydroxylations of ergocalciferol (vitamin D2).

Using the DNA strand below, select the answer choice that displays the correct polypeptide sequence. DNA TAC/GCA/TTA/GGC/AAC/ACT a Meth-Ile-Pro-Gln-Leu-stop b Meth-Arg-Val-Ala-Trp-stop c Meth-Arg-Asn-Thr-Ala-stop d Meth-Arg-Asn-Pro-Leu-stop

Answers

Answer:

d Meth-Arg-Asn-Pro-Leu-stop

Explanation:

This question is describing the processes of transcription and translation of protein synthesis. Transcription is the synthesis of mRNA from DNA while translation is the synthesis of amino acid from mRNA. In this question, the following DNA sequence is given:

TAC/GCA/TTA/GGC/AAC/ACT

- Following the complementary base pairing rule i.e A-U, G-C, T-A etc, the following mRNA transcript will be produced after transcription:

AUG/CGU/AAU/CCG/UUG/UGA

- Using the genetic code, the following amino acid sequence will be produced from the above mRNA sequence after translation:

Methionine/Arginine/Asparagine/Proline/Leucine/STOP.

Natata Townsend
1. Which of the following nutrient is responsible for repairing of cells?
O (a) calcium
O (e) fats
O (b) protein
0 (d) carbohydrates​

Answers

Answer:

B

Explanation:

the nutrient that is required for repairing cells is protein

Define Haploid
Define Diploid
What is the number of chromosomes for diploid human cells?
What is the number of chromosomes for haploid pea plant cells?​

Answers

Answer:

Define Haploid

1 set of chromosomes.

Define Diploid

2 sets of chromosomes.

What is the number of chromosomes for diploid human cells?

46

What is the number of chromosomes for haploid pea plant cells?

7

-TheUnknownScientist

Explanation:

number of chromosomes for diploid human cells is 46.

number of chromosomes for haploid pea plant cells is 7

45637456425637561457324751276567 x³+y³+z³=kf im homopfobic

Answers

what- ...... i’m so confused

What kind of energy transformation is taking place in the plant in the
photograph?
O A. Potential energy → Nuclear energy
B. Solar energy - Chemical energy
C. Potential energy - Kinetic energy
D. Chemical energy → Solar energy

Answers

The Answer is B: Solar energy - Chemical energy.

Based on the terms provided, the energy transformation taking place in the plant in the photograph is: Solar energy → Chemical energy This is because plants undergo a process called photosynthesis, where they convert solar energy (sunlight) into chemical energy stored in glucose molecules. The correct option is B.

What is the energy transformation?

The transformation of energy from one form to another is known as an energy transformation. Every second of the day, energy is transformed somewhere. Energy can be expressed in a variety of ways, including electrically, thermally, nuclearly, mechanically, electromagnetically, sonically, and chemically.

The process of photosynthesis is taking place. The plant is converting solar energy (from the sun) into chemical energy in the form of glucose (sugar). This is an example of a transformation from one form of energy (solar) to another (chemical).

Therefore, the correct option is B.

Learn more about Energy transformation here:

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Which fact supports the conclusion that goats are crucial to the international food supply?


Americans use milk from goats to make cheese.

Most of the world’s milk comes from goats.

The flavor of a goat’s milk varies by its breed.

Many Americans prefer cow meat to goat meat.

Answers

Answer:

blanks

Explanation:

Answer:most of the world’s milk comes from goats

Explanation:

In polygenic inheritance, each of the genes controlling a trait will have exactly the same influence over the trait. Group of answer choices Yes since all genes having to do with a trait always have the exact same influence on a trait. No since different genes will exert varying degrees of influence on the trait None of the other responses are satisfactory answers. No since all traits are only controlled by one gene with two alleles.

Answers

Answer:

No, since different genes will exert varying degrees of influence on the trait

Explanation:

The term quantitative heritability refers to the transmission of a phenotypic trait in which expression depends on the additive effect of a series of genes.

Polygenic heritability occurs when a trait results from the interaction of more than one gene. And these genes can also have more than two alleles. The action of many genes and alleles can cause many different combinations that are the reason for genotypic graduation.

Quantitative traits are those that can be measure, such as longitude, weight, eggs laid per female, among others. These characters do not group individuals by any precise and clear categories. Instead, they group individuals in many different categories that depend on how the genes were intercrossed and distributed during meiosis. The result depends on the magnitude in which each allele contributes to the final phenotype and genotype. When they interact, they create a gradation in phenotypes, according to the level of contribution.  

Let us see, for instance, the eye color trait, which results from the interaction of many genes. Two of them significantly contribute to the color green, blue, or brown, while the rest of the involved genes play a role in defining the spectrum of phenotypes of each eye color. So, there are different tones of blue eyes, green eyes, and brown eyes, and the differences are determined by the contribution of each allele to the phenotype.

What is the most important influence of the forest ecosystem on the environment

Answers

Answer:

Forests

Explanation:

Forests have also sanitary influences upon environment due to the production of oxygen through photosynthesis.

The study of the environment is called ecology. There are two types of factors for an ecosystem and these are a biotic and abiotic factors.

The correct answer is light

What is photosynthesis?

The process of the formation of food by trapping the sunlight with the help of chloroplast is called photosynthesis.

According to the question, the most influential factor which affects the environment is light as all the plants directly depend on the light for the formation of food and all the other species are dependent on plants either directly or indirectly.

Hence, the correct answer is light.

For more information about the light, refer to the link:-

https://brainly.com/question/1388366

3. Which of the following is an example of
an effort to conserve biodiversity?
a. Use of pesticides
b. Driving large vehicles
c. Protecting plant and animal
species in a national park
d. Taking a piece of coral for a
souvenir after a scuba dive

Answers

C.
All the other would cause harm to biodiversity

???????????????,,,??,???? What is the answer to number 4 and 5

Answers

Answer:

Questions 4-snow and 5 is rain showers

Help me on this please

Answers

Answer:

a is the answer the the following question

Fill in the blank with the appropriate word. ResetHelp The conducts impulses toward the soma. The conducts impulses toward the synaptic terminals. The is the region surrounding the nucleus. The is the enlarged end of an axon. The contains neurotransmitters. The is a cluster of RER and free ribosomes. The is another term for the soma of a neuron. The is the membrane of the axon. The is a cell that forms the blood 13brain barrier. The is a fine branch of an axon.

Answers

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Fill in the blank with the appropriate word as follows:

The dendrite directs electrical impulses toward the soma.The axon conducts impulses toward the synaptic terminal.The Perikaryon is the region surrounding the nucleus. The synaptic terminals ate the enlarged end of an axon.The synaptic vesicles contain neurotransmitters. The Nissl bodies are clusters of RER and free ribosomes.The Perikaryon or the cell body is another term for the soma of a neuron.The Axolemma is the membrane of the axon.The Astrocyte is the cell that forms the blood-brain barrier. The Telodendria is a fine branch of the axon.

What is a Neuron?

A neuron may be defined as a type of cell which is part of the nervous system. It sends messages to and from the brain. Neurons may also call neurons or nerve cells are the fundamental units of the brain and nervous system.

These cells are responsible for receiving sensory input from the external world, for sending motor commands to our muscles, and for transforming and relaying the electrical signals at every step in between.

Therefore, filling in the blank with the appropriate word is well described above.

To learn more about Neurons, refer to the link:

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Question 3 of 10
A cell membrane is very specific about what it allows across. How does this
help the cell?
A. It helps the cell absorb as many different molecules as possible.
O B. The cell works better when it contains fewer proteins.
O C. Transport proteins allow only enzymes to pass through the
membrane.
D. It is better for the cell if most molecules are prevented from
entering
SUBMIT

Answers

Answer:

D

Explanation:

Explain two (each) methods of micro-organism control for Malaria and Rabies

Answers

Explanation:

Vaccination and use of quinine drugs

Specific immunity involves
actif
Pa
abs
both cell-mediated and antibody-mediated immunity
lysozyme found in sweat and tears
acti
or
MA
tior
724
surface barriers like skin, mucus and the cilia of the respiratory tract
cell-mediated immunity
O antibody-mediated immunity

Answers

Answer: both cell-mediated and antibody-mediated immunity.

Explanation:

Specific immunity involves targeting certain infections. This is done when certain cells assess the danger and release anti-bodies that target the antigens of the organism.

Once this is done, white blood cells will now be able to fight the organism or pathogen more efficiently.

There is therefore both a cell-mediated and antibody-mediated response.

The gram-negative bacterium Vibrio cholerae produces a protein, cholera toxin (Mr 90,000), that is responsible for the characteristic symptoms of cholera: extensive loss of body water and NaCl through continuous, debilitating diarrhea. If body fluids and NaCl are not replaced, severe dehydration results; untreated, the disease is often fatal. When the cholera toxin gains access to the human intestinal tract it binds tightly to specific sites in the plasma membrane of the epithelial cells lining the small intestine, causing adenylyl cyclase to undergo prolonged activation (hours or days).

a. What is the effect of cholera toxin on [cAMP] in the intestinal cells? Why?
b. Based on the information above, suggest how cAMP normally functions in intestinal epithelial cells. Briefly justify.
c. Suggest a possible treatment for cholera

Answers

Answer:

a.) It causes prolonged activation of adenylyl cyclase which leads to increased levels of Cyclic adenosine monophosphate(cAMP).

b.) In the intestinal epithelial cells, the cAMP binds to the apical chloride channels and allows it to open leading to osmotic permeability of water across the cell into the lumen of the intestine which is excreted through the faeces.

C.) Cholera can effectively be treated through the use of antibiotics and intravenous fluid replacement therapy.

Explanation:

Vibrio cholerae is a gram negative rigid curved bacillus that are actively ( vigorously) motion by a polar flagellation. The name vibrio is derived from the characteristic vibration movement of the organism when viewed under a microscope. This bacteria is capable of producing toxins called cholera toxin, which it uses as a virulent factor. It is responsible for the characteristic symptoms of cholera: extensive loss of body water and NaCl through continuous, debilitating diarrhea.

Cyclic adenosine monophosphate(cAMP) which is called a second messenger because it is not a hormone that can directly institute an intracellular change, instead, it serves as a second messenger to cause an effect.In the intestinal epithelial cells, the cAMP binds to the apical chloride channels and allows it to open leading to osmotic permeability of water across the cell into the lumen of the intestine which is excreted through the faeces.

In the effect of cholera toxin on the cAMP in the intestinal cells, Cholera toxin increases the fluid loss. The binding of the toxin to the intestinal cells causes a large increase in the level of cAMP in the cells by inhibiting the conversion of GTP bound to Ga to GDP. So adenyl cyclase is not turned off and diarrhea results.

The possible treatment is through the use of antibiotics and intravenous fluid replacement therapy. Prompt and adequate replacement of lost fluid and electrolyte through oral administration and supplemented with intravenous administration of fluids highly suggested for treatment of cholera. Antibiotics is equally used for treatment only when the cholera strain has been confirmed sensitive to it through culture.

PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.

Answers

B. Selective breeding. Humans have been choosing certain dog breeds to make other breeds. The Labrador retriever is an example of humans creating different breeds for certain tasks

please answer !




will give brainliest

Answers

Answer:

c

Explanation:

Clouds can block light and heat from the Sun, making Earth's temperature cooler


What does the word photosynthesis mean?
Light + energy
Energy + mass
Light + put together
Energy + sugar

Answers

Answer:

Hey mate.....

Explanation:

This is ur answer.....

--> Light + Put together

Hope it helps!

Brainliest pls......

Follow me! ;)

An 1815 volcanic eruption in Indonesia was followed by a three-year famine
around the world. How was the volcano linked to the famine?
A. The eruption preserved an ancient human civilization.
B. The eruption's heat and energy killed all the farmers in its path.
C. The eruption contributed to global warming.
D. The eruption's ash and gas significantly dimmed the sun.
sun
E. The eruption killed many local people.

Answers

D. Leading to reduced crop output

Which of the following is an example of an abiotic factor?

Answers

Answer:

d) The climate of the community in which the species mentioned above inhabit.

Answer:

an abiotic factor is non living, biotic means living

Explanation:

examples: light, carbon dioxide, water, temperature, nutrients

Other Questions
Whats the answer please??!!! I will mark brainliest if all questions are answeredwomens right to vote1. what did the 15th amendment fail to do?2. which territory was the first to grant voting rights to women? 1+1=1268934457687423456779052436869867543? I have no idea how to draw these please help Which of the following graphs is the graph of a linear function? Jeremy and Alyssa Johnson have been married for five years and do not have any children. Jeremy was married previously and has one child from the prior marriage. He is self-employed and operates his own computer repair store. For the first two months of the year, Alyssa worked for Office Depot as an employee. In March, Alyssa accepted a new job with Super Toys Inc. (ST), where she worked for the remainder of the year. This year, the Johnsons received $274,000 of gross income.Expenses associated with Jeremys store include $44,750 in salary (and employment taxes) to employees, $50,700 of supplies, and $19,900 in rent and other administrative expenses.As a salesperson, Alyssa incurred $2,190 in travel expenses related to her employment that were not reimbursed by her employer.The Johnsons own a piece of raw land held as an investment. They paid $690 of real property taxes on the property and they incurred $295 of expenses in travel costs to see the property and to evaluate other similar potential investment properties.The Johnsons own a rental home. They incurred $8,690 of expenses associated with the property.Jeremy paid $4,690 for health insurance coverage for himself (not through an exchange). Alyssa was covered by health plans provided by her employer, but Jeremy is not eligible for the plan until next year.Jeremy paid $2,690 in self-employment taxes ($1,345 represents the employer portion of the self-employment taxes).Jeremy paid $5,380 in alimony and $3,285 in child support from his prior marriage (divorced in 2010).The Johnsons donated $2,190 to their favorite charity.Determine the Johnson's AGI given the above information: Melanie invested $3800 in an account paying in interest rate of 2 3/8% compounded quarterly Sebastian invested $3800 in an account paying in interest rate of 2 3/4% compounded monthly after 16 years how much more money with Sebastian have in his account then Melanie to the nearest dollar The critic rating and audience score for 8 movies are shown in the table.Critic Rating 72 80 65 23 28 60 41 35Audience Score 64 92 90 48 55 70 44 80An owner of a movie theater is investigating whether critic rating can be used to predict the mean audience score of movies. Assuming the conditions for inference have been met, which of the following inference procedures is the most appropriate to estimate the mean change in audience score for each 1 point increase in the critic rating?A. A one-sample t-test for meansB. A linear regression t-interval for slopeC. A two-sample t-interval for a difference between meansD. A matched-pairs t-interval for a mean differenceE. A two-sample Z-interval for a difference between proportions Please help me I need this Describe what a parable is. Give an example of one parable. Describe what happened in that parable and what it means. - subject is religion Find the circumference of a circle with radius, r = 16.5m.Give your answer in terms of pi. The North produced most of the steel for the US and European markets. Farmers in the Northern states engaged in the production of Can someone help me Plz help me well mark brainliest if you are correct! A lot of land ____ sold to early settlers.Is it was/were please provide reason as well Easy points lets gooo Points scored in a basketball game vary directly with shots taken. If a player scores 50 points and takes 40shots, how many would she have scored if she takes 60 shots? (Round your answer down to the nearest pointscored)Add MediaSignature explain why guard cells have thicker inner walls and thinner outer walls 2x - 42 = 94Solve for x give the correct triangle congruence theroen