where in the cell does mitosis occur
Answers
Related Questions
which is the most basic level of organization in the human body
Answers
Answer:
a cell
Explanation:
cells are the most basic unit of life. cells form tissues which form organs which form organ systems which form an organism
Answer:
The first and most basic level of organizations in human body is cellular level. Cell is the basic unit of life and smallest unit.
What cell structure defines the outer boundary of all cells, separating the cell's contents from its environment? (two words)
Answers
The cell structure that defines the outer boundary of all cells, separating the cell's contents from its environment is the cell membrane.
The cell membrane, also known as the plasma membrane, is a thin, flexible barrier that surrounds the cell and controls the movement of substances in and out of the cell. It is composed of a phospholipid bilayer, which consists of two layers of phospholipids. The phospholipids have a hydrophilic (water-loving) head and a hydrophobic (water-repelling) tail. This arrangement allows the cell membrane to selectively allow certain substances to enter or exit the cell.
In addition to phospholipids, the cell membrane also contains proteins, cholesterol, and carbohydrates. Proteins embedded in the cell membrane help transport molecules across the membrane, provide structural support, and facilitate cell communication. Cholesterol helps maintain the fluidity and stability of the cell membrane. Carbohydrates attached to proteins and lipids on the outer surface of the cell membrane play a role in cell recognition and cell-cell interactions.
Overall, the cell membrane acts as a barrier that separates the internal environment of the cell from the external environment, allowing the cell to maintain homeostasis and control its interactions with the surrounding environment.
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Pine trees that are too tall or too short do not do as well as pine trees that are average in height. How is this an example of stabilizing selection?
Answers
Stabilizing selection is a condition where extreme traits have a negative outcome in the indivuals of a population, therefore the average value of the trait has the advantage. In this example, pine trees that are in the extremes of height (either tall or short) might have physiological disadvantages. On the other hand, pine trees with average height might escape this issues. For example, tall trees might have troubles with water transport, while short trees might have troubles with getting enough sunlight exposure. Average pine trees would not have disadvantages in either of the physiological examples described. With time, this trees (average height) will dominate in the population structure, whereas the other type of trees while be diminished.
Who was responsible for "cracking the code" of DNA by establishing what amino acids are coded for by which codons, and when was this accomplished?
Answers
Answer:
The correct answer is- Nirenberg and Heinrich, 1961.
Explanation:
Experiments by Marshall Nirenberg and Heinrich Matthaei in 1961, began to decipher genetic codes and state about the 64 triplet codons in the genetic code by using mRNA from DNA to translate into specific amino acids in our biological system.
Their experiment helps to decode or crack the code of DNA by establishing the first codon out of 64 triplet codes which are UUU codes for phenylalanine. In the future, the same approach is used to find other amino acids.
Look at DNA, a polymer, and nucleotide, a monomer, on the nucleic acid page. There are sugar molecules within these structures. How many sugar molecules are in DNA and the nucleotide?
Answers
Answer: 1 sugar molecule
Explanation:
The basic building block of DNA is called a NUCLEOTIDE. A nucleotide is made up of one sugar molecule, one phosphate molecule and one of the four bases.
Science
Teacher View
Q3.What are the two products of photosynthesis?
Oxygen and Water
Carbon dioxide and Water
Glucose and Water
Oxygen and Glucose
Answers
Answer:
oxygen and glucose
Explanation:
it is oxygen and glucose pog
What are the factors that influence cardiorespiratory?
Answers
Factors that affect cardiorespiratory fitness are body fat, gender, health status, age, genetics, and lifestyle.
Cardiorespiratory Fitness (CRF) – refers to the ability of the circulatory and respiratory systems to supply oxygen to the mitochondria of skeletal muscle for the energy production required during physical activity. CKD is an important indicator of adolescents' physical and mental health and academic performance. This aspect of fitness also affects your ability to perform low-intensity, sustained, full-body exercises, such as walking, without feeling undue fatigue. B. Walking briskly, climbing stairs, doing household chores.
Components of the Cardiopulmonary Airway - The cardiopulmonary system consists of the heart and blood vessels, which work in tandem with the respiratory system (lungs and airways). These body systems carry oxygen to the body's muscles and organs and remove waste products, including carbon dioxide.
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9) What is the distance between the particles in compression ? d) zero a) least b) more c) mediumpp
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In compression, the distance between particles generally becomes smaller, so the correct answer would be (a) "least."
What is compression?Compression refers to the process of applying pressure or force to a material, resulting in a decrease in volume. When particles in a material are compressed, they move closer together, which reduces the distance between them.
The amount of compression and the resulting decrease in distance between particles will depend on factors such as the nature of the material being compressed and the amount of pressure being applied.
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_____ splits water into 1/2 O2, H , and e- . A structure of a thylakoid. Letters from A to E indicate definite structures. Letter A indicates the first protein complex located in the thylakoid membrane. Letter B indicates a multiprotein complex between two complexes A and C. Letter C marks the second integral membrane protein complex. Letter D marks a substance inside the thylakoid. Letter E indicates a flask-shaped structure in the membrane of the thylakoid, which has a canal through the membrane. D B C A E
Answers
The luminous reactions begin when light reaches photosystem II. The water molecules provide electrons to the photosystem, releasing oxygen and protons. The letter A represents photosystem II that splits water.
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1. Luminous energy is trapped by chlorophyll in Photosystem II.
2. When the pigment molecules absorb light, electrons provided by water molecules get in a higher energy level.
3. The excited electrons go through the electron transport chain from Photosystem II to a less energetic level in photosystem I.
4. When the excited electrons leave photosystem II, they are replaced by new electrons extracted from the water molecules.
5. Luminous energy absorbed move the electrons from the photosystem I to another electron acceptor, from where they get transported again and used to produce NADPH molecules.
6. When electrons leave Photosystem I, they are replaced by new electrons coming from photosystem II.
7. When the water molecule breaks down, hydrogen ions remain in the thylakoid lumen, from where they are pumped to the stroma by the ATP synthase.
8. The released energy is used to produce ATP molecules.
9. Hydrogen ions go back from the stroma to the thylakoid compartment.
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Primary consumers, herbivores that
feed on plants, are found on what
level of an energy pyramid?
A) first
B) Second
C) Fourth
Answers
Ans
C) fourth
Explanation:
I took ap environmental science and we leaned this
cell division that reduces chromosome number from diploid to haploid, reduction division
A Mitosis
B Meiosis
C Amitosis
D Fision
Answers
Meiosis is a type of cell division that reduces chromosome number from diploid to haploid.
What do you mean by meiosis?
Meiosis, also called reduction division, division of a germ cell involving two fissions of the nucleus and giving rise to four gametes, or sex cells, each possessing half the number of chromosomes of the original cell.
The process of meiosis is characteristic of organisms that reproduce sexually. Such species have in the nucleus of each cell a diploid (double) set of chromosomes, consisting of two haploid sets (one inherited from each parent). These haploid sets are homologous—i.e., they contain the same kinds of genes, but not necessarily in the same form.
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Meiosis is the division of a cell that reduces the number of chromosomes from a diploid (2n) state to a haploid (n) state.
What is diploid?
Diploid is a term used in genetics to refer to a cell or organism that has two sets of chromosomes. In humans, the diploid number of chromosomes is 46, which is two sets of 23. This means that any human cell contains two copies of each chromosome, one from each parent. Diploid cells are found in multicellular organisms, and are the most common form of cells in the human body. Diploidy is important for genetic diversity, as it allows for the exchange of genetic material between the two sets of chromosomes. This helps create genetic variation, which is necessary for evolution to occur.
This occurs in sex cells during the process of gamete formation, and is essential for sexual reproduction. During meiosis, two consecutive nuclear divisions (meiosis I and meiosis II) reduce the number of chromosomes by half. This process also involves cell division, which results in four haploid daughter cells. Each daughter cell contains one set of chromosomes, which is a combination of the maternal and paternal chromosomes of the original cell.
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Phospholipids are important molecules in cells. Considering the structure and function of phospholipids?
a. They contain a glycerol backbone.
b. The phosphate head group is polar.
c. The molecule is an important part of cell membranes.
d. The non-polar section attracts water molecules.
e. They are a major form of energy storage.
Answers
The right answer is option D The non-polar section attracts water molecules.
The polar molecule of the hydrophilic head and the aliphatic chains of the hydrophobic tails are both important for phospholipids' physicochemical properties. Such amphiphilic molecules frequently form structures in micelles, liposomes, or lipid bilayers when they are arranged in an aqueous media so that only their hydrophilic head is in contact with the water molecule
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write a paragraph about sea turtle's habitat.
Answers
Answer:
Habitat & Diet
Sea turtles live in almost every ocean basin throughout the world, nesting on tropical and subtropical beaches. They migrate long distances to feed, often crossing entire oceans. Some loggerheads nest in Japan and migrate to Baja California Sur, Mexico to forage before returning home again.
Explanation:
hope it helps
help me with this please i just need help on how to set the punnent squares up
Answers
For parent set #1: both are heterozygous long-winged, so their genotypes are Ll.
For parent set #2: one fly is heterozygous long-winged (Ll) and the other is short-winged (ll).
To determine the resulting probability of offspring for each parent set, you can use Punnett squares. Each Punnett square represents the possible combinations of alleles from each parent and the resulting genotypes and phenotypes of their offspring.
For parent set #1:
The Punnett square would look like this:
Copy code
| L | l |
----|--------|------|
L LL Ll
l Ll ll
The resulting probability of offspring would be:
25% long-winged homozygous (LL)
50% long-winged heterozygous (Ll)
25% short-winged homozygous (ll)
For parent set #2:
The Punnett square would look like this:
Copy code
| L | l |
----|--------|------|
l Ll ll
l Ll ll
The resulting probability of offspring would be:
50% long-winged heterozygous (Ll)
50% short-winged homozygous (ll)
Based on the resulting probabilities, parent set #2 would be the better option for producing the flightless short-winged fruit flies that Pets-R-Us needs. This is because all of the offspring from parent set #2 will have at least one copy of the short-winged allele, whereas only 25% of the offspring from parent set #1 will have this allele. Therefore, using parent set #2 will increase the chances of producing the desired offspring.
To date, which of these has been used largely in creating clones? Metabolic profiling RNA sequencing Protein mapping Recombinant DNA technology
Answers
RNA sequencing technology has been used largely in creating clones.
What is RNA sequencing?RNA sequencing (RNA-Seq) makes use of high-throughput sequencing techniques to shed light on a cell's transcriptome.
Numerous RNA biology topics, such as single-cell gene expression, translation (the translatome), and RNA structure, can be studied using RNA-seq techniques (the structurome). Exciting new uses, such as spatial transcriptomics, are being investigated (spatialomics).
The steps in a typical RNA-sequencing experiment are as follows:Design experiment: Plan the experiment.Preparation of RNA. Purify and isolate the input RNA.Library preparation. Create cDNA from the RNA and add sequencing adapters.Sequence. cDNAs should be sequenced using a platform.Analysis.Learn more about RNA sequencing here:
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yellow
green
red
yellow
Prediction 1
(many generations later)
red
me me me me me me me me
te fe
R10 09/0
toe te te the the me me me me me me
Which prediction best shows what the population could look like after many generations? What
caused it to change?
Prediction 2
(many generations later)
a. Prediction 1 is best. Two yellow or red snakes had a baby with a mutation in its
genes for the green-skin trait. Because green snakes are more likely to survive,
that baby survived long enough to pass on its mutation, so the green trait
became more common over generations.
b. Prediction 1 is best. Green snakes are more likely to survive, so yellow and red
snakes began to have offspring with mutations in their genes for the green-skin
trait so that their offspring would have a better chance of surviving.
c. Prediction 2 is best. A snake could have been born with a mutation in its genes
for the green-skin trait and lived for a little while. Because green snakes are more
likely to die, it would have been more likely to die before it had offspring, so the
final population will only have yellow and red snakes.
d. Prediction 2 is best. A snake could have been born with a mutation in its genes
for the green-skin trait, but having a mutation in its genes would have caused it to
die when it was born, so the final population will only have yellow and red
snakes.
Answers
Prediction 1 is best. Two yellow or red snakes had a baby with a mutation in its genes for the green-skin trait.
Because green snakes are more likely to survive, that baby survived long enough to pass on its mutation, so the green trait became more common over generations. This is an example of natural selection, where individuals with beneficial traits have a higher chance of survival and passing on those traits to their offspring.
In this case, the green-skin trait was beneficial because it allowed snakes to better blend in with their environment and avoid predators, leading to an increase in frequency over time.
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clusters of chlorophyll and accessory pigments are called ________.
Answers
Strands of replicated DNA held together
as pairs are called
_____
chromatins
chromatids
centrioles
centromeres
Answers
Answer: chromatids
Explain: Because chromatids are replicated DNA held together as pairs .
Answer:chromatids
Explanation:
what are the types of tropism
Answers
Answer:
Forms of tropism include phototropism (response to light), geotropism (response to gravity), chemotropism (response to particular substances), hydrotropism (response to water), thigmotropism (response to mechanical stimulation), traumatotropism (response to wound lesion), and galvanotropism, or electrotropism (response to electric current).
Tropism is a response to certain stimuli. A positive tropism is moving towards the stimuli, while a negative tropism is moving away from a stimuli.
Positive Phototropism - Growing towards light
Negative Phototropism - Growing away from light
Positive Thigmotropism- Moving towards touch
Negative Thigmotropism- Moving away from touch
Positive Hydrotropism - Growing towards water
Negative Hydrotropism - Growing away from water
Positive Gravitropism - Growing towards ground
Negative Gravitropism - Growing upwards
Which one of the following is a source of energy that is used by cells
A) Lighting
B) Glucose
C) Salt
D) Toddlers
Answers
Answer:
b
Explanation:
i am smart
Which do fish have instead of arms and lungs
Answers
they use gills to breathe the water instead of lungs
Part D
Choose one of there hypotheses to make a prediction
Answers
Answer: The tomato plants will grow faster and taller in soil with compost over a 30-day period.
pls help
When new bonds form, energy is __________.
released
disconnected
gone
stored
Answers
Answer:
When new bonds form, energy is 'released'
Which process produces haploid cells?
A. Meiosis
B. Mitosis
Answers
Answer:
the answer is: A
meiosis
The right answer is A Meiosis
Select the statement(s) that accurately summarize the scientific method.
Data is needed to help scientists either prove or disprove a hypothesis.
Scientists think of interesting questions to attempt to answer after formulating a hypothesis.
During the scientific investigation, scientists cannot refine, change, or expand the investigation to sufficiently investigate and collect data.
Scientists perform investigations to gather data and make observations as forms of evidence.
Throughout the entire process, scientists take detailed notes of their procedures so it can be repeated again either by themself or other scientists.
the question is multy choise
Answers
just for fun. In this activity, you'll use a simulation to learn about chemical reactions between atoms and molecules . Get started by following these steps : 1. Go to the simulation Balancing Chemical Equations 2. Click the simulation and select the introduction . Balance the three equations using the balance scale and graph tools . 3. When you've finished all three equations, go to the game and select level 2. Complete all five challenges. Now use what you learned from the simulation to answer the following questions. Self-Evaluation How did you do? Rate your work on a scale of 1 to 5, with 5 as the highest score. Then write a brief evaluation of your work below. Note what you learned and what challenged you.
Answers
We can see here that carrying out the simulation made me to understand how to actually balance scale and graph tools.
Rating my work, I can rate it as 3 out of 5.
What is simulation?Simulation is a technique used to model and replicate the behavior of a real-world system or process over time. It involves creating a computer-based or mathematical representation of the system and running experiments or scenarios to observe how the system behaves under different conditions.
Evaluating my work, I discovered that it wasn't easy to understand the simulation process. But as I kept practicing, it became easy.
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Which of the following would best explain the differences between closely related species found on
each of the four landmasses.
A. hybridization
B. temporal isolation
C. behavioral isolation
D. geographic isolation
Answers
Answer: D. Geographic isolation would best explain the differences between closely related species found on each of the four landmasses.
Geographic isolation occurs when physical barriers, such as mountains or oceans, prevent populations of a species from interbreeding with one another. Over time, these populations can diverge in their traits and genetic makeup, leading to the evolution of distinct species.
In this scenario, the closely related species found on each of the four landmasses would have evolved independently from one another due to their geographic isolation. As a result, they may exhibit differences in their physical characteristics, behavior, and genetics that have accumulated over time due to natural selection, genetic drift, and mutation.
Hybridization, temporal isolation, and behavioral isolation can also contribute to speciation, but they would not be the best explanation for the differences between closely related species found on different landmasses. Hybridization, for example, would result in the fusion of populations and the breakdown of reproductive barriers, leading to the formation of a hybrid population rather than distinct species. Temporal isolation and behavioral isolation, on the other hand, would prevent interbreeding between populations that occupy the same geographic area, but they would not explain why closely related species found on different landmasses have evolved to be different from one another.
Explanation:
True/ False: Substances will diffuse more rapidly through a dense substance. Explain
Answers
Answer:
I'd say true
Explanation:
Mass of the molecules diffusing: Heavier molecules move more slowly; therefore, they diffuse more slowly. The reverse is true for lighter molecules. ... Because cells primarily use diffusion to move materials within the cytoplasm, any increase in the cytoplasm's density will inhibit the movement of the materials.
Answer:
False
Explanation:
As the density of a solvent increases, the rate of diffusion decreases. The molecules slow down because they have a more difficult time getting through the denser medium. If the medium is less dense, diffusion increases.
When you use electricity in your home, which resources are powering it? Research the energy resources used to power your state’s electrical grid (that’s what supplies your home with electricity). In the space below or on a separate sheet of paper, create an informative handout to provide to the people of your state.
Include the following information in your handout:
• Which state do you live in?
• What is the population of your state?
• What percent of the electricity in your state comes from
nonrenewable resources?
• What percent of the electricity in your state comes from
renewable resources?
• What percent of the electricity in your state comes from
nuclear energy?
• Which renewable resource is used the most in your state?
• What is an interesting fact about energy usage in your state?
Answers
Answer:
Comment which state you live in an I'll be able to help
Explanation:
Relate the structure of the cell (plasma) membrane with organic compounds.
Answers
Carbohydrates, proteins, phospholipids, and lipids are the organic compounds that structure the cell membrane. The glycocalyx is that the term helpful to describe the carbohydrate coating on the cell surface, which is involved in cell-cell adhesion, protecting the cell surface from chemical damage. The membrane proteins are responsible for the most dynamic processes carried by the membranes. Lipids are providing the essential structure of the cell membrane. Phospholipids are generally made up of from four fatty acids, alcohol, phosphate, and alcohol with phosphate.
The lipids, proteins, phospholipids, and lipids that structure the cell membrane are all organic substances. The term "glycocalyx" is beneficial to describe the carbohydrate coating on a cell's surface that aids in cell-cell attachment and shields the surface from chemical deterioration. The foremost dynamic processes carried out by membranes are controlled by membrane proteins. The elemental structure of the cell membrane is provided by lipids. Four fatty acids, alcohol, phosphate, and alcohol with phosphate are the most components of phospholipids.
The plasma membrane is another name for the cell membrane. It shields the cell and its cellular constituents from the surface world. It controls the flow of chemicals into and out of the cell and is selectively permeable. A cell's cytoplasm is surrounded by a skinny, semi-permeable membrane referred to as the cell membrane (plasma membrane). By letting some chemicals into the cell while blocking others, it serves the aim of preserving the integrity of the cells interior. The upkeep of cellular integrity and the transportation of molecules inside and outside the cells are the two most crucial roles performed by the cell membrane.
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