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:
hope this helps Please mark Brainlist
1. Which of the following characteristics is possessed by invertebrates?
a) exoskeleton
b) endoskeleton
c) joint appendages
d) cephalization
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.
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
Answer:
The boy that scored the winning goal is on my team. His name is Greg.
Explanation:
the role of dna in cellular differentaation
Answer:
controls the way cells function, also determines what type of specialized cells will be made.
what is colustrum? explain plz
Show you work here using the data table 1 to calculate the energy consumed by this female sea otter.
Answer:
the female sea otter has 1
Explanation:
This is confusing, help please
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
b) Give an example of an animal with radial symmetry and an example of an animal with bilateral
symmetry. (2 points)
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 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?
Which of the following is NOT considered a form of precipitation? *
Rain
Snow
Lightning
Hail
All of the above are considered precipitation
Answer:
Lightning is not considered a form of precipitation but rather a discharge of electricity.
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.
Answer:
Explanation:
A
Answer: [A] It loses nutrients to the leech.
Explanation:
An antibody is a foreign substance in the body.
a. True
b. False
need help with the top question :p
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
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
What is a long chain of one-ring sugar molecules?
Answer:
polysaccharide
Explanation:
In which part of the male reproductive part do pollens found? A. Anther B. Filament C. Stigma D. Style
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:
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
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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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.
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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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
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.
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
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 mmZygotic population of the next generation
F(MM) = 4/4 MM + 1/4 MmF(Mm) = 1/2 MmF(mm) = 4/4 mm + 1/4 MmSo, 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 MmF(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 MmF(Mm) = 1/2 (2pq)
F(Mm) = 1/2 (0.5)
F (Mm) = 0.25
F(mm) = 4/4 mm + 1/4 MmF(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
Answer:
-2 USD
Explanation:
What is Not a correct statement about chromosomes,Dna,or genes
Image below
Double stranded RNA is cleaved by
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.
AGGUCAUGCAUGGGCAUGCAU tRNA sequence for the given strand of mRNA
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
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
What is the name of the disease caused by a lack of thyroid hormones?
what is the effect of atmospheric disturbances on stars
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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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
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.
The external appearance of traits is called: -----
a.
Ecotype
b.
Genotype
c.
Cytotype
d.
Phenotype
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.
thrips are insects that feed on rose
Answer:
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1) How long is it's growing season for carrots.
2) How long is it's growing season for corn.
Answer:
2-4 months for carrots and about 120 days for corn
Explanation: