Answer:
Cytokinesis, or “cell motion,” is the second main stage of the mitotic phase during which cell division is completed via the physical separation of the cytoplasmic components into two daughter cells. Division is not complete until the cell components have been apportioned and completely separated into the two daughter cells. Although the stages of mitosis are similar for most eukaryotes, the process of cytokinesis is quite different for eukaryotes that have cell walls, such as plant cells.
In cells such as animal cells that lack cell walls, cytokinesis follows the onset of anaphase. A contractile ring composed of actin filaments forms just inside the plasma membrane at the former metaphase plate. The actin filaments pull the equator of the cell inward, forming a fissure. This fissure, or “crack,” is called the cleavage furrow. The furrow deepens as the actin ring contracts, and eventually the membrane is cleaved in two (Figure 1).
Part a: This illustration shows cytokinesis in a typical animal cell. Part b: Cytokinesis is shown in a typical plant cell. In an animal cell, a contractile ring of actin filaments forms a cleavage furrow that divides the cell in two. In a plant cell, Golgi vesicles coalesce at the metaphase plate. A cell plate grows from the center outward, and the vesicles form a plasma membrane that divides the cytoplasm.
Figure 1. During cytokinesis in animal cells, a ring of actin filaments forms at the metaphase plate. The ring contracts, forming a cleavage furrow, which divides the cell in two. In plant cells, Golgi vesicles coalesce at the former metaphase plate, forming a phragmoplast. A cell plate formed by the fusion of the vesicles of the phragmoplast grows from the center toward the cell walls, and the membranes of the vesicles fuse to form a plasma membrane that divides the cell in two.
In plant cells, a new cell wall must form between the daughter cells. During interphase, the Golgi apparatus accumulates enzymes, structural proteins, and glucose molecules prior to breaking into vesicles and dispersing throughout the dividing cell. During telophase, these Golgi vesicles are transported on microtubules to form a phragmoplast (a vesicular structure) at the metaphase plate. There, the vesicles fuse and coalesce from the center toward the cell walls; this structure is called a cell plate. As more vesicles fuse, the cell plate enlarges until it merges with the cell walls at the periphery of the cell. Enzymes use the glucose that has accumulated between the membrane layers to build a new cell wall. The Golgi membranes become parts of the plasma membrane on either side of the new cell wall (Figure 1).
Which biome would animals be adapted to collecting FRUITS in the CANOPY layer of trees?
Answer: the forst or the jungly
Explanation:hope this help
How would you convert a spring into a straight piece of metal using the same approach as topoisomerase in DNA replication?
Answer:
It would be necessary to make small breaks in the spring and then align the pieces, forming a straight piece.
Explanation:
Topoisomerase is the enzyme responsible for unwinding the DNA molecule during replication. To do this, topoisomerase makes small breaks in the DNA molecule, but uses covalent bonds to hold these small pieces of DNA, causing the strands of DNA to pass over each other, aligning in a rectilinear topography.
_______ is a method of growing or controlling forest growth for the health and value of the environment.
a. reforestation
b. shelterwood cutting
c. prescribed burning
d. selective cutting
e. silviculture
Answer:
I think its reforestation
Explanation:
Which of the following amendments might you choose to improve the overall quality of the soil in the following scenario?
The soil in a garden is loamy, with a high organic content. On testing, the soil is sour, with a low pH of 4. You wish to grow lilacs, which prefer a more alkaline soil.
potassium
calcium carbonate
compost
nitrogen
Answer:
compost
Explanation:
Help it’s super confusing
Answer:
Slowly
Explanation:
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How can a frog camouflage itself?
Answer:
Frogs have skin colors that match with the environment, it allows the frog hide from predators and hide from prey
Helllpp ASAP please!!!!!! ILL GIVE YOU BRAINLIST and 25 points if you get it right
Which of the following is a
problem with temperature
inversions?
A. they can improve habitat conditions
B. they can remove pollution
C. pollution can gather under the inversion
D. they can cause extinctions
Answer:
A
Explanation:
Y red ballonls and m green ballons were divided evenly amoung three kids. How many ballons did each kid get
Answer:
Each kids will get Y red balloons + M green ballons ÷ 3.
Explanation:
This is because Y red balloons and green red balloons are the total number of balloons present.
The total number of ballons are Y red+M green ballons.
The total number of kids are 3.
Therefore each kids with get the addition of the ballons divided by 3.
Therefore, Y red ballons + M green ballons ÷ 3.
Cellular respiration uses the products of photosynthesis __________& ___________ and produces _________ gas, _________ & _____________ which is the energy currency of life.
Explanation:
oxygen and glucose
carbon dioxide gas, water and ATP.
hope it helps. :)
4. Floating algae called Phytoplankton is a
A.) secondary producer
B.) consumer
C.) primary producer
D.) very large plant
Answer:
In a balanced ecosystem, they provide food for a wide range of sea creatures.Phytoplankton, also known asmicroalgae, are similar to terrestrial plants in that they contain chlorophyll and require sunlight in order to live and grow.
Help please confusing
Answer:
Learned
Explanation:
Only this answer makes sense.
Which contains MORE organisms? *
A. Genus
B. Species
C. Phylum
Answer:
Species is the Answer
Thank you friend
A coyote has 78 chromosomes in its nucleus. What are the diploid and Haploid numbers of the coyote?
Answer:
I believe that the answer would be 39 and 78
help me please please
Answer:
just as too much or too little light causes yellowing of the seedlings
Explanation:
just as too much or too little light causes yellowing of the seedlings ,too much water or not enough can cause it
Plz help me get this right
Answer:
maybe you should pay attention in class you bru
Explanation:
The density of ocean water varies from place to place across the Earth. What factors control the density of ocean water?
A. depth and salinity
B. depth and temperature
C. salinity and life-forms
D. salinity and temperature
Answer:
D. Temp and salinity
Explanation:
Which of the following are techniques to estimate population size?
counting individuals
sampling
mark-and-recapture
population index
Answer:
The Mark-Recapture technique is used to estimate the size of a population where it is impractical to count every individual. The basic idea is that you capture a small number of individuals, put a harmless mark on them, and release them back into the population.
Two important measures of a population are population size, the number of individuals, and population density, the number of individuals per unit area or volume. Ecologists often estimate the size and density of populations using quadrats and the mark-recapture method.
Wildlife managers use 4 general approaches to estimate population sizes of wildlife: total counts, incomplete counts, indirect counts, and mark-recapture methods.
The answer is counting individuals and mark-and-recapture.
The technique counting individuals, sampling, mark-and-recapture, and population index are used to estimate population size.
What is population?A population is the entire set of individuals, whether that group is a nation or a group of people who share a characteristic.
To estimate population size, the following methods can be used:
Individual counting entails physically counting every individual in a population. This method is appropriate for small or sparsely populated areas.Sampling is the process of taking a representative sample of a population and extrapolating the results to estimate population size. This method is best suited for large or densely packed populations.Capturing and marking a sample of individuals, releasing them back into the population, and then capturing another sample later. The proportion of marked people in the second sample is used to calculate population size. This method is appropriate for populations that are difficult to directly count or sample.Population index: This method estimates population size by using indirect measures such as the number of nests or tracks. This method is appropriate for populations that are difficult to observe directly or for counting individuals. It is, however, less accurate than other methods.Thus, all the given options are correct.
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If the population of beetles in model 1 mated naturally would your prediction for the offspring in Question 4 still be valid? Explain.
Complete question:
Model 1 – Controlled (Selective) Mating: (Imagen in the attached files, PNG)
4. If each mating pair has one offspring, predict how many of the first generation offspring will have the following genotypes.
BB Bb bb
7. If the population of beetles in Model 1 mated naturally would your prediction for the offspring in Question 4 still be valid? Explain.
Answer:
7) If the population of beetles in model 1 mated naturally, the prediction for the offspring in Question 4 would not be valid. The number of individuals with each genotype in the F1 would change because there would be other possible types of crosses: Bb x bb, Bb x Bb, bb x bb
Explanation:
Due to technical problems, you will find the complete explanation in the attached files (PDF)
HELP ASAP
Which of these industries is least likely to benefit from the Paris Agreement?
A. Solar power companies
B. Hydraulic fracking operators
C. Wind turbine manufacturers
D. Hydroelectric dam builders
Answer:
The answer is B. Hydraulic fracking operators!
Explanation:
Just took this on AP!X and it is correct! :))
If a ⊥ b and b ∥ c, then _____
a ∥ b.
a ∥ c.
a ⊥ c.
b ⊥ c.
THE ANSWER IS NOT A//C
Answer:
a is perpendicular to c will be the answer.
Are we running out of clean water? And why, explain.
Answer:
well were not running out but not every place has clean water and no we never run out of clean water. theres always clean water
Explanation:
Answer: hm, our planet won't run out of water. fresh water isn't always avaliable when humans need it. half of the freshwater can be found only in 6 countries. more than one million humans live without clean water.
Explanation:
4 The finger-like structure in the wall
of the small intestine through which
food is absorbed into the blood-
stream is called
A duodenum.
B bile duct
C villus.
D pancreas.
E ileum.
Answer:
...................C
[tex]{ \blue{ \tt{option \: (c)}}} \: { \green{ \boxed{ \red{ \sf{ \underline{villus}}}}}}[/tex]
Explanation:-
Villus, plurally called villi, in anatomy any of the small, slender, vascular projections that increase the surface area of a membrane. Important villous membranes include the placenta and the mucous-membrane coating of the small intestine.
A cell's mRNA loses all of its uracil. What will happen next?
If a cell's mRNA loses all of its uracils, then it will not undergo a protein synthesis or translation process.
as defected mRNA will not be able to form all anticodon thus there is no codon formation takes place for protein synthesis.
What are codon and anticodon?Codon: A codon is a trinucleotide sequence of DNA or RNA that corresponds to a specific amino acid.
Anticodon: An anticodon is a trinucleotide sequence complementary to that of a corresponding codon in a messenger RNA (mRNA) sequence.
Hence, If a cell's mRNA loses all of its uracils, then it will not undergo a protein synthesis or translation process.
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Which side represents high concentration?
What is competition? Give example
Answer:
Competition is a relationship between organisms that strive for the same resources in the same place. ... Intraspecific competition occurs between members of the same species. For example, two male birds of the same species might compete for mates in the same area.
Hope it helps!!!
Question 4
Which of the following is NOT a service that diverse ecosystems provide?
O Soil & nutrient retention
O Diversity of food items
O Water retention
O Animal habat
O Global warming
If B is the dominant gene for brown eyes and P is recessive gene for blue eyes, what is the genotype for brown eyes?
Answer:
D
Explanation:
Both BB and Bb will result in brown eyes as it is the dominant trait. Only bb will result in blue eyes thus the answer is both choice 1 and 2.
8. Which of the following statements is true about meiosis?
A. Meiosis produces 2 genetically identical daughter cells
B. Meiosis produces 4 identical daughter cells
C. Meiosis produces 4 genetically different daughter cells
D. Meiosis produces 2 different daughter cells
Answer:
B
Explanation:
Meiosis produces gametes that contain one complete haploid set of chromosomes
Meiosis is a reduction division, where the number of chromosomes in the daughter cells is reduced to half as compared to the parent cell. This set of chromosomes is called a haploid set or genome. The reduction from diploid to haploid occurs during Anaphase I of meiosis I, where homologous chromosomes separate and enter into two different cells. Meiosis takes place only in reproductive cells that divide to form gametes
So, the correct answer is 'Meiosis produces gametes that contain one complete haploid set of chromosomes'
hope that helps
PLS HELP ME WITH THIS!!!
What is the nucleotide sequence of the mRNA strand you built?
Answer:
A DNA strand contains the following nucleotide sequence: TACTGCCTCCCCATAAGAATT
Explanation:
Answer:
AUG CUG ACC UAG
Explanation
If this question is on the gizmo "RNA and Protein Synthesis" then this is the answer for that.
Technological advances are eliminating what kind of jobs?
a. corporate
c. nonprofit
b. less-skilled
d. none of the above
Answer:
less skilled
Explanation:
trust
Technological advances are eliminating less killed type of jobs.
what are different types of jobs ?The airline industry is a multi-billion-dollar job industry where Aviation jobs are available both in the air and on the ground, Creative arts and who love art and design can enhance their careers in an arts-related field.
Business Administration jobs make it in business, many jobs in this category will require some education past high school as well as an aptitude
Some education-related job like teaching jobs with the ability to teach can specialize in certain subjects, Educational requirements vary with the law of enforcement jobs.
For skilled writers, editors, and designers, media jobs are offered and these kinds of jobs might be found at print or digital publishing companies.
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