explain how lynn margulis hypothesis changed scientific ideas about cell development

Answers

Answer 1

Answer:

Margulis theorized that eukaryotic cells (cells with nuclei) evolved from a symbiosis of bacteria without nuclei that had previously lived independently. ... This serial endosymbiotic theory, or SET, gave a new view of evolution and helped explain the origin of cells with nuclei.21-Oct-2008

Works written: Origin of Eukaryotic Cells, Symbiosis in Cell Evolution, Microcosmos ...

Professions: biologist, scientists

Spouse: Carl Sagan

Explanation:

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Related Questions

What is the main function of nucleic acids?
A. provide genetic information
B. long term energy
C. short term energy
D. build muscle, hair, and nails

Answers

the answer is a they provide storage of genetic information

1. Which of the following characteristics is possessed by invertebrates?
a) exoskeleton
b) endoskeleton
c) joint appendages
d) cephalization

Answers

Answer: a) exoskeleton

Explanation:

Well, many invertebrates – and all arthropods – have a protective external casing called an exoskeleton. This literally means ‘outside skeleton’ and its role is to cover the animal’s soft tissues and also provide a rigid structure to which the creature’s muscles can attach.

What is a long chain of one-ring sugar molecules?

Answers

Answer:

polysaccharide

Explanation:

In which part of the male reproductive part do pollens found? A. Anther B. Filament C. Stigma D. Style​

Answers

Answer:

Anther

Explanation:

Stamen is a male reproductive part in which anther produce male reproductive cells.

Answer:

The stamen is made up of two parts: the anther and filament. The anther produces pollen (male reproductive cells). The filament holds the anther up. During the process of fertilization, pollen lands on the stigma, a tube grows down the style and enters the ovary.

Explanation:

The population of mice in a local forest ecosystem has recently died out due to disease. In the past, these mice made up a large part of the diet of the forest fox.

What is the best prediction about what will happen to the foxes?

Answers

As their main source of food has died out through the course of time the forest fox will have a harder time finding different prey causing them to die

Isabel is researching the effects of deforestation using online sources. She finds an environmental study on the relationship between deforestation and local weather. Which of the following characteristics should this study have in order for its results to be considered valid?

I. Empirical observations
II. Evidence that can be replicated
III. Outcomes that don't change with new experimentation

A. I and II
B. II and III
C. I and III
D. I only

Answers

Answer:

Here is something that might help you

Explanation:

I am not trying to plagiarize, just trying to help.

Learn more of where I got this answer at https://brainly.com/question/24430205?referrer=searchResults. Trust me, it is not a site that will steal any of your information, phone numbers, or passwords. I hope I helped.

This is confusing, help please

Answers

Answer:

C: the song bird

Explanation:

Birds follow a type II or in your case a type B survivorship curve. Unlike elephants which are a Type I or Type A, and the bugs are Type III or Type C in your case.

Answer: I think it would be (C)

Explanation:

I really hope this helps

PLS HELP, HELP HHHHEEEELLLLPPPP
1) How long is it's growing season for carrots.
2) How long is it's growing season for corn.

Answers

Answer:

2-4 months for carrots and about 120 days for corn

Explanation:

thrips are insects that feed on rose

Answers

Answer:

????????????????????????

AGGUCAUGCAUGGGCAUGCAU tRNA sequence for the given strand of mRNA

Answers

Answer:

look at explanation

Explanation:

basically in order to go from mrna to trna just replace

a becomes u

g becomes c

u becomes a

c becomes g

A leech attaches to an animal and feeds off the animal's blood.

What happens to the animal the leech attaches to in this scenario?

It loses nutrients to the leech.
It gains nutrients from the leech.
It will be killed and eaten by the leech.
It will kill and eat the leech.

Answers

Answer:

Explanation:

A

Answer: [A] It loses nutrients to the leech.

Explanation:

What is Not a correct statement about chromosomes,Dna,or genes

Image below

Answers

A. Genes have the code that make protein

Which of these forms when air moves in the directions shown by the arrows
in the diagram?

A ) Valley Breeze
B) Land Breeze
C ) Mountain Breeze
D ) Sea Breeze

Answers

Answer:

C.

Explanation:

Please do brainless :)

Mountain breeze refers to the fact that the surface breezes are coming from the mountain and blowing into the lowlands. Thus, option C is correct.

What is the movement of air in mountain breeze?

The air cools during the night and flows into the valley from the mountainside.

As a result, the breeze blows in the other direction; it travels from the mountains to the plains and valley floor. This wind is therefore referred to as the mountain breeze.

As the air rushes in to fill the space, the air pressure decreases and a gust of wind is produced. A valley breeze, on the other hand, develops when cooler air in the valley falls to fill the space left by the warm air rising.

Therefore, Mountain Breeze in which air move from high pressure to low pressure.

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Double stranded RNA is cleaved by

Answers

Answer:

Dicer

RNA-dependent RNA polymerase amplifies siRNAs by binding to them and making more dsRNA, which is recognized and cleaved by Dicer into secondary siRNAs. The result is the silencing of genes by amplifying the RNAi effect. In certain cases RNAi also silences genes by the formation of heterochromatin.

Question 7(Multiple Choice Worth 2 points) (06.02 MC) Read the two sentences. The boy scored the winning goal is on my team. name is Greg. Select the words that complete the sentences. o . that. His that. Their O who. His who. Their​

Answers

Answer:

The boy that scored the winning goal is on my team. His name is Greg.

Explanation:

What is the name of the disease caused by a lack of thyroid hormones?​

Answers

Thyroiditis.Graves' disease.Hashimoto's disease.Goiter.Thyroid nodule.Thyroid cancer.

A dowry is:
A.
Money or property given by a man to or for his bride
B.
A gift given by the bride to her mother-in-law
C.
Money or property given by a man to his parents
D.
Money or property given by the bride to her parents

Answers

Answer:

B

Explanation:

As dowry system is the social problem in which the bride/bride's family has to give money or property to the groom's family.

The bride/bride's family has to give money or property to the groom/groom's family on their marriage.

It’s A not B it’s given by the husband to be

Fill in the blanks below with the correct word to complete the sentence.
Water is warmed by the sun and

It is then cooled and
Finally, it is brought back to Earth in the form of

Answers

Answer:

Evaporates, Condensed, Liquid Water

Explanation:

Water is warmed by the sun and evaporates

It is then cooled and condensed

Finally, it is brought back to Earth in the form of Liquid Water

Answer:

Fill in the blanks below with the correct word to complete the sentence.

Water is warmed by the sun and evaporate

.

It is then cooled and condensation

.

Finally, it is brought back to Earth in the form of

Water

⇒ precipitation.

Explanation:

got it right 9/23/22

Which statement best describes energy release in cellular respiration? (1 point)

Stored chemical energy is broken down and released in the cytoplasm.
Stored chemical energy is broken down and released in the cytoplasm.

Stored chemical energy is broken down and released in the mitochondria.
Stored chemical energy is broken down and released in the mitochondria.

Stored chemical energy can be used immediately and is released in the cytoplasm.
Stored chemical energy can be used immediately and is released in the cytoplasm.

Stored chemical energy can be used immediately and is released in the mitochondria.

Answers

Answer:

During cellular respiration, glucose is broken down in the presence of oxygen to produce carbon dioxide and water. The energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate).

So the answer is Stored chemical energy is broken down and released in the mitochondria.

Explanation:

In cellular respiration, stored chemical energy is broken down and released in the mitochondria. The correct option is B.

What is mitochondria?

Mitochondria are the membrane-bound organelles that create the maximum of the chemical energy necessary to power the biochemical reactions of the cell.

The mitochondrial energy is stored in a small molecule referred to as adenosine triphosphate (ATP).

Cellular respiration is the way by which organic fuels are oxidized in the presence of an inorganic electron acceptor, encompassing one as oxygen, to give enormous amounts of energy and pressure the majority production of ATP.

Cellular breathing is the way by which cells in plants as well as animals break down glucose and convert it into power, which is then used to perform work.

The goal of cellular respiration is simple: to provide the energy that cells require to function.

Thus, the correct option is B.

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You are working with a population of snails. During the mating season, you observe that individuals in the population will only mate with others of the same genotype. For example, Mm individuals will only mate with Mm individuals, and mm individuals will only mate with other mm individuals. There are only two alleles for this gene (M is dominant; m is recessive). You have determined that the frequency of the M allele is 0.5. After one generation, what is the expected genotype frequency for Mm individuals in this population

Answers

If matings are not random in a population and individuals mate with other individuals of similar genotype/phenotype, h0m0zyg0us frequencies increase. In this example, the genotype frequency for Mm is F(Mm) = 0.25.

---------------------------------

In the exposed example, one of the assumptions of Hardy-Weinberg equilibrium is not accomplished. There are non random matings.

Individuals mate with other snails of the same genotypes

MM  x  MM

Mm  x  Mm

mm  x  mm

We can assume this is an example of matings by similar phenotypes.

Eventually, this mating system leads to an increase in the h0m0zyg0us genotype frequency, at the expense of heter0zyg0us ones in loci that determine the trait.

Allelic frequencies do not change. Only genotypic frequencies do.

This mating system tends to separate the population into two subgroups, decreasing the amount of heter0zyg0us individuals.

          Matings              Progeny                              

MM  x  MM         4/4 MMMM  x  Mm         1/4  MM + 2/4 Mm + 1/4 mmmm  x  mm         4/4 mm

Zygotic population of the next generation

F(MM) = 4/4 MM + 1/4 MmF(Mm) = 1/2 MmF(mm) = 4/4 mm + 1/4 Mm

So, in the exposed example we know that the frequency of the dominant allele M is 0.5

f(M) = p = 0.5

knowing that p + q = 1, we can clear the equation to get the frequency of the recessive allele.

p + q = 1

0.5 + q = 1

q = 1 - 0.5

q = 0.5

f(m) = q = 0.5

Zygotic population of the next generation

F(MM) = 4/4 MM + 1/4 Mm

       F(MM) = p² + 1/4 (2pq)

       F (MM) = 0.5² + 1/4 (2 x 0.5 x 0.5) = 0.25 + 0.125

       F(MM) = 0.375

F(Mm) = 1/2 Mm

        F(Mm) = 1/2 (2pq)

        F(Mm) = 1/2 (0.5)

        F (Mm) = 0.25

F(mm) = 4/4 mm + 1/4 Mm

        F(mm) = q² + 1/4 (2pq)

        F(mm) = 0.5² + 1/4 (2 x 0.5 x 0.5) = 0.25 + 0.125

        F(mm) = 0.375

The expected genotype frequency for Mm individuals in this population is F(Mm) = 0.25.

------------------------------

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If a firm hires 10 workers at $9 per hour each and the 11th worker will be hired only if the wage rate falls to $8 per hour, the marginal wage rate must be _____.

Multiple Choice
−$2
$2
−$2.20
$2.20

Answers

Answer:

-2 USD

Explanation:

The answer is -$2.20

Which of the following is NOT considered a form of precipitation? *
Rain
Snow
Lightning
Hail
All of the above are considered precipitation

Answers

Answer:

Lightning is not considered a form of precipitation but rather a discharge of electricity.

An antibody is a foreign substance in the body.
a. True
b. False

Answers

Answer is B. False :)

Show you work here using the data table 1 to calculate the energy consumed by this female sea otter.

Answers

Answer:

the female sea otter has 1

Explanation:

what is colustrum? explain plz​

Answers

Colostrum is the first stage of breast milk. It develops during pregnancy and lasts for several days after birth. Colostrum is yellow and thick in consistency or can appear clear and runny. Babies need small amounts of food, and the mother’s colostrum is perfect in components and volume.

need help with the top question :p

Answers

Which of the following is the best explanation
for the presence of both chloroplasts and
mitochondria in plant cells? - If plants cannot
produce enough ATP in the process of
photosynthesis to meet their energy needs,
they can produce it in aerobic respiration.
Sugars are produced in chloroplasts.

the role of dna in cellular differentaation

Answers

Answer:

controls the way cells function, also determines what type of specialized cells will be made.

b) Give an example of an animal with radial symmetry and an example of an animal with bilateral
symmetry. (2 points)

Answers

Answer:jellyfishes, corals, anemones, and ctenophora.

Explanation:

Examples of animals that possess bilateral symmetry are: flatworms, common worms ("ribbon worms"), clams, snails, octopuses, crustaceans, insects, spiders, brachiopods, sea stars, sea urchins, and vertebrates.

The external appearance of traits is called: -----

a.

Ecotype

b.

Genotype

c.

Cytotype

d.

Phenotype

Answers

Answer:

d) Phenotype

Explanation:

External appearance of an individual trait is called phenotype. The term "phenotype" refers to the observable physical properties of an organism; these include the organism's appearance, development, and behavior.

what is the effect of atmospheric disturbances on stars

Answers

This the correct answer

Explanation:

However,when light enters the Earth's atmosphere,the different wind speeds distort the light waves,leading to distortions in the image of stars.The effects of the atmosphere can be modeled as rotating cells of air moving trubulently.

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