what is the main difference between the two hypotheses for the origin of the eukaryotic cell? one attributes the formation of the endoplasmic reticulum and nuclear envelope to infolding of the plasma membrane. one hypothesizes that engulfment of a proteobacterium occurred after the formation of the nuclear envelope, rather than before. only one involves the conversion of a proteobacterium to a mitochondrion. one hypothesizes that eukaryotic cells evolved from an archaeon, rather than a bacterium.
The main difference between the two hypotheses for the origin of the eukaryotic cell is one hypothesizes that engulfment of a proteobacterium occurred after formation of the nuclear envelope rather than before.
What is cell ?The smallest component of all living things, including human tissue, that is capable of independent existence. The cell membrane, nucleus, and cytoplasm make up a cell's three basic structural components.
All living things are composed primarily of cells. Trillions of cells make up the human body. In addition to absorbing nutrients from meals and converting those nutrients into energy, they also provide the body structure and perform certain tasks.
Types of cell :Prokaryotic and eukaryotic cells are the two main subtypes of cells. Prokaryotic and eukaryotic cells have different shapes (see prokaryote, eukaryote), yet they share many of the same molecular characteristics and functions.
To know more about cytoplasm visit :
https://brainly.com/question/15417320
#SPJ4
WILL GIVE 30 POINTS
Which of the following does a weather station model demonstrate? O altitude air mass air density temperature
Answer:
Your answer is D) Temperature.
Help me plz... DNA strand: T A C C A T A T T
What has happened to the joints of a person with
arthritis?
joints became inflamed
O joints became tougher
joints became softer
joints became more cartilaginous
Answer:
joints became inflamed
Explanation:
Arthritis is an inflammation of the joints.
My last one ⚠️⚠️
Salt dressing is a(n)
A. Compound
B. Element
C. Heterogenous
D. Homogenous
Answer:
hopefully its a. compound
Explanation:
A section of DNA is shown below:
3' ATTCCCGTACCG 5
Which of these correctly matches to form the complementary strand of DNA
above?
a) 5' ATTGGGGTAGGC 3
c) 5 TAAGGGOTACCG 3
b)5' TAACOCUAGGGO 3
d) 5'TAAGGGCATGGC 3
charles chamberland developed porcelain filters that allowed other scientists to demonstrate that viruses are smaller than bacteria.
Charles Chamberland was a microbiologist who discovered a filter that is known as porcelain filter that has small pores than bacteria.
This porcelain filter was used to separate the bacteria, by passing the solution through this filter that allow the solution to pass through the filter but not bacteria.
This filter was used to demonstrate that virus are small than bacteria because virus can easily pass through this filter because of their small size. these virus are defined as filterable agents.
Microbiologist is the scientist that study about the micro organisms and their life forms and processes.
To learn more about microbiologist here
brainly.com/question/13549869
#SPJ4
quizlet the second edition of bergey's manual of systematic bacteriology is largely based on classification.
The primary source for identifying prokaryotic organisms, particularly bacterial species, employing every distinguishing trait, is Bergey's Manual of Systematic Bacteriology.
Bergey's Manual was renamed as of 1984. Separate volumes of Bergey's Manual of Systematic Bacteriology are being released. There are 35 parts in this manual, each based on a different characteristic, such as overall shape, morphology, gram staining, endospore presence, motility, oxygen correlations, or method of energy production. Prokaryotae's four divisions are listed in the manual. Since the first volume of Bergey's manual of systematic bacteriology was published in 1984, a lot of work has been done on the sequencing of rRNA, DNA, and proteins, which has made it possible to conduct phylogenetic analyses of prokaryotes. As a result, the second version of Bergey's manual is released in five volumes and is primarily phylogenetic rather than phonetic, making it considerably different from the previous edition. It contains further ecological details regarding certain taxa.
Learn more about Bergey's Manual of Systematic Bacteriology https://brainly.com/question/13161785
#SPJ4
i need help on a biology question
Answer:
ask
Explanation:
ready to help
go ahead
How do limited resources affect evolution of a species?
Answer:
If they do not have what they need they will not be able to reproduce or grow.
Explanation:
What is menstruation
Answer:
a period
bleeding from the woman's parts
Explanation:
3. Forming Your Opinion Should antibiotics be
restricted? Are there some situations in which
such regulations would be more appropriate
than others?
Answer:
that depends the the kind of antibiotic it is. yes there some that may end up cause more problems then fixing them but there are some antibiotics that be very well within the human body. so if you ask me there should only be restraints on the ones that cause more problem. then they should find a way to better them and unrestricted them. we all known we have more than enough technology to do that. if we really wanted to we could make one antibiotic to cure everything no matter what it is.
Explanation:
what factors may lead to the accumulation of genetic differences between two physically separated populations
Factors that result in speciation encompass genetic differences, natural choice, geographical isolation, and mutation. Geographical isolation isn't a first-rate factor in the speciation of a self-pollinating plant species as pollination takes place among the reproductive organs of the identical flower.
In their separate niches, the two organizations go their very own evolutionary ways, collecting extraordinary gene mutations. Being subjected to distinct selective pressures, experiencing extraordinary historical activities, and eventually turning incapable of interbreeding they never come collectively again.
Speciation occurs when a set inside a species separates from other contributors of its species and develops its very own unique traits. The demands of a distinct environment or the traits of the contributors of the new institution will differentiate the brand new species from their ancestors.
Learn more about genetics here:-https://brainly.com/question/996038
#SPJ4
A DNA segment is changed from -AATTAG- to -AAATAG-. This is a
a. substitution mutation
C. inversion mutation
b. translocation mutation
d. deletion mutation
PLZ HELP ME!!!!
“The key factor to this process is identifying the trait you want and then only allowing species that have that trait to breed with one another.” Which of the following BEST matches the statement above?
Answer:
Where is the following at?
Explanation:
Answer the following questions based on the article you just read. Stem Cell Basics Why are there more debates than answers when discussing stem-cell research?
Answer:
Scientists do not fully understand how stem cells proliferate and differentiate.
There are ethical concerns debated when using embryonic stem cells for research.
Scientists do not know the signals used by stem cells and if they are similar when forming specialized cells; they are unable to grow specialized and unspecialized cells in the lab.
It is a newer technology with many questions left to answer.
Explanation: For Edge 2020
One of the most important checkpoints in the cell cycle, also known as the restriction point", is the -
Answer:G 1 checkpoint
Explanation:G 1 checkpoint is the main decision point of the progression of the cell cycle. It is the rate-limiting step of the cell cycle known as the restriction point. The G1 checkpoint occurs at the transition stage of the G 1 stage-cell into the S stage. Protein synthesis and DNA replication occur during the G 1 phase.
what are 5 examples of natural systems
Answer: 5 examples of natural systems are coastal, estuary, river, lake, forest, and agricultural.
Explanation:
A rock has been sent on a journey down through the layers of the Earth until it reaches the inner core. Explain what happens to the atoms in the rock as it moves through each layer.
Answer:
The rock components of the crust are slowly but constantly being changed from one form to another and the processes involved are summarized in the rock cycle (Figure 3.2). The rock cycle is driven by two forces: (1) Earth’s internal heat engine, which moves material around in the core and the mantle and leads to slow but significant changes within the crust, and (2) the hydrological cycle, which is the movement of water, ice, and air at the surface, and is powered by the sun.The rock cycle is still active on Earth because our core is hot enough to keep the mantle moving, our atmosphere is relatively thick, and we have liquid water. On some other planets or their satellites, such as the Moon, the rock cycle is virtually dead because the core is no longer hot enough to drive mantle convection and there is no atmosphere or liquid water.
Explanation:
hope it help you
pick me as the brainliest
-
1.Complete the statements about meiosis:
The process of meiosis occurs during the_______and results in_____.To maintain the correct number of chromosomes in offspring, male and female gametes contain chromosomes as somatic cells. During fertilization, gametes fuse to form a_____ cell called a zygote
2. Complete the statements about photosynthesis:
Glucose molecules are a product of _____ during_____ . After heterotrophs ingest food, glucose molecules are broken down during _____ in _____.
Answer:
Sex cells, haploid number of chromosomes, Diploid cell.
carbondioxide and water, photosynthesis, respiration, carbondioxide, water and energy.
Explanation:
The process of meiosis occurs during the division of sex cells and results in haploid number of chromosomes. During fertilization, gametes fuse with each other to form a diploid cell called a zygote. Glucose molecules are a product of two reactants known as carbondioxide and water during the process of photosynthesis. After heterotrophs take food, glucose molecules are broken down during respiration and as a result carbondioxide, water and energy in the form of ATP are produced.
The process of meiosis occurs during se-xual reproduction and results in haploid cells. To maintain the correct number of chromosomes in offspring, male and female gametes contain chromosomes as somatic cells. During fertilization, gametes fuse to form a diploid cell called a zygote.
Glucose molecules are a product of plants during photosynthesis. After heterotrophs ingest food, glucose molecules are broken down during glycolysis in the cytoplasm.
What is meiosis?Meiosis is a process in reproduction in which haploid cells are produced from diploid cells.
The process of meiosis occurs during the se-xual reproduction and results in haploid cells. To maintain the correct number of chromosomes in offspring, male and female gametes contain chromosomes as somatic cells. During fertilization, gametes fuse to form a diploid cell called a zygote.
What is photosynthesis?Photosynthesis is the process by which green plants produce their food from carbon dioxide using energy from sunlight.
Glucose molecules are a product of plants during photosynthesis. After heterotrophs ingest food, glucose molecules are broken down during glycolysis in the cytoplasm.
Learn more about photosynthesis at: https://brainly.com/question/19160081
During which stage does the exchange of genetic information occur?
Answer:
During this stage, homologous chromosomes line up on the metaphase plate and exchange genetic information.
Explanation:
Crossing over occurs when chromosomal homologs exchange information during metaphase of Meiosis I. During this stage, homologous chromosomes line up on the metaphase plate and exchange genetic information.
The exchange of genetic information takes place during meiosis, particularly during the prophase, resulting in organism diversification and natural selection, and sexual reproduction is the cause of the diversification.
What is the significance of the genetic exchange?During meiosis, homologous chromosomes, which are identical versions of a chromosome, pair up and exchange genetic information through a process called crossing over, and due to this, new combinations of genetic information are seen in the offspring cells. The exchange of genetic information leads to speciation, the introduction of genes into the gene pool, etc.
Hence, the exchange of genetic information takes place during meiosis, particularly during the prophase, resulting in organism diversification and natural selection, and sexual reproduction is the cause of the diversification.
Learn more about the genetic exchange here.
https://brainly.com/question/20185276
#SPJ6
a is a speleothem that forms on the ceiling of a cavern and resembles an icicle made of rock.
Stalactite.
Stalactite:
Often, stalagmites develop up from the cave floor, whereas stalagmites typically grow down from the cave roof.It's simple to distinguish between the two since stalagmites have a "G" for ground and stalactites have a "T" for top.Typically made of calcium carbonate, stalagmites can also be made of lava, mud, peat, pitch, sand, sinter, and amber.A single drop of water rich in minerals is the origin of all limestone stalactites.The smallest ring of calcite is left behind by the falling water drop.Another calcite ring is left behind with each new drop of water that develops and drops.Learn more about Stalactite, here
https://brainly.com/question/137124
#SPJ4
Which statement best describes a major point of Darwin's theory of Natural Selection?
All things are not related
B
The best adapted organisms are most likely to survive
C Organisms become less complex over time
D
Change in organisms occurs suddenly
ASAPPPO
Answer B
Explanation:
the strategy of ecosystem development: an understanding of ecological succession provides a basis for resolving man's conflict with nature
Ecological succession provides a basis for resolving man's conflict with nature because this is the process in nature by which the different kind of species and the habitat in an area changes according the time.
This succession is important for the growth and the development of an ecosystem. It start the colonization and development of new area and redevelopment of the destroyed area.
The principle of ecological succession have a important relationship between man and nature. It need to be examined as basis for resolving man's environmental crisis.
Colonization is the process of establishing control and settling the indigenous people of an area.
To learn more about colonization here
brainly.com/question/12419730
#SPJ4
pdf fluorescence of amphotericin b-deoxycholate (fungizone) monomers and aggregates and the effect of heat-treatment
The major therapy for systemic mycoses continues to be amphotericin B-deoxycholate (Fungizone). However, its usage is constrained by its toxicity, particularly renal impairment.
The polyene macrolide antifungal Amphotericin B, which is formed as micellar dispersion Fungizone (FZ), and its modified counterpart heat-treated Fungizone are both reported to have fluorescence excitation and emission spectra. The modulation of Amphotericin B aggregation state using sodium dodecyl sulfate or sodium deoxycholate surfactant indicates that the monomer and dimer states have distinct fluorescence spectra. It is seen that an excited dimer transfers energy to the monomer. The expected S₁ - S₀ fluorescence emission as well as anti-Kasha fluorescence emission from the S₂ state are both displayed by FZ and heat-treated FZ (HTFZ). The discoveries lay the foundation for upcoming fluorescence characterisation of FZ or HTFZ interactions with cell membranes.Learn more about the Amphotericin B with the help of the given link:
https://brainly.com/question/4652591
#SPJ4
Which of the following occurs at convegent plate boundares?
A subluction zone
B island arc
C mountain formation
D all of the above
a niche in an ecosystem is most similar to
Answer:
A niche is like the organisms "job" they do in the environment.
Explanation:
Niche, in ecology, all of the interactions of a species with the other members of its community, including competition, predation, parasitism, and mutualism. A variety of abiotic factors, such as soil type and climate, also define a species' niche.
In the 1990s, many scientists agreed that the five-kingdom classification scheme should be expanded to six kingdoms. Which discovery supported this decision?
the use of microscope because it led to the discovery of new organism and identification differences in cells
A man with Type A blood has a child with a woman with Type B blood. The child is Type O. What are the genotypes of the parents?
If carbon dioxide is completely removed from a plant’s environment, what would you expect to happen to the plant’s production of high-energy sugars?
Answer:
plant will disapia or die becouse photosynthesis are not take place