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Today, mitosis is understood to involve five phases, based on the physical state of the chromosomes and spindle. These phases are prophase, prometaphase, metaphase, anaphase, and telophase.
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The field that involves the study of cells and how they interact with other cells is termed.
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Cellular biology is the study of cells and their interactions with one another
The endocrine system is responsible for hormone synthesis and secretion in animals. What types of organelles would you expect to find in great number in endocrine cells?.
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The endocrine system is responsible for hormone synthesis and secretion in animals. Organelles of the endomembrane system is expect to find in great number in endocrine cells.
Endocrine System- The glands & organs that produce hormones & release them into the bloodstream so they can reach all of the body's tissues and organs. Growth and development, metabolism, & reproduction are just a few of the vital processes in the body that are regulated by the hormones the endocrine system secretes.
Hormone- Chemicals called hormones function in the body as messenger molecules. They are created in one area of the body and then go to other areas where they assist regulate how cells & organs function.
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The prokaryote organism consists of________ cells. *
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Answer:
single
Explanation:
A prokaryote is a simple, mostly single-celled (unicellular) organism that lacks a nucleus, or any other membrane-bound organelle. We will shortly come to see that this is significantly different in eukaryotes. Prokaryotic DNA is found in a central part of the cell: the nucleoid.
water with less than 1% ____ concentration
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Answer:
water with less than 1 percent would kill the human life and animals also
Is a negative control necessary in an experiment regarding the color of light?
Basically, if an experiment is being done about the effects of the colour of light. Is a negative control (no light) necessary?
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The negative control is a control group used to know no other variable is affecting the experiment results. In this case, it is necessary to have a negative control group to be sure that light is the only factor affecting the results.
What is a negative control?
When talking about a negative control, we refer to the control group used to know if there is any other variable that might be affecting or influencing the results.
Let us remember that in an experiment, we can identify different variables. Some of them are the dependent and independent variables. Other variables need to be controlled to avoid their influence on the dependent variable.
The researcher needs to expose the control group to the same conditions the experimental group was exposed to (except for the independent variable) to see if there is any other factor affecting the experiment.
No change is expected in this group since it is not exposed to the treatment.
However, if there is a change, the negative control is used to identify other variables that might affect the response of the dependent variable.
In the exposed situation, the researcher wants to know the effects of the colour of light on something, let us say, on plants growth.
In this example, the only difference between the control and experimental group is the light. The negative control group is not exposed to light, while the experimental group is.
Even when no change is expected in plant growth from negative control it is necessary to have a negative control group to compare conditions and be sure the only factor affecting the results is the type of light.
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During this phase of mitosis, the mitotic spindle forms and the nuclear envelope fragments.
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In prophase, the nuclear membrane breaks down and the filaments that make up the mitotic spindle are formed.
How is mitosis generated and what are its phases?Mitosis is the process in which a cell generates two daughter cells with the same genetic information, this allows the body and/or tissue to grow and generate. Mitosis has several phases, including this: prophase, metaphase, anaphase and telophase.
In prophase, chromosomes are formed by condensing, the nuclear membrane is fragmented and the formation of mitotic spindles occurs. In metaphase, the chromosomes join the mitotic spindle by their centrometes and are located in the equatorial zone of the cell. During anaphase, the mitotic spindle fibers shorten, causing the sister chromatids to separate.
Finally, in telophase the chromatin decondenses and the chromosomes will no longer be visible, the nuclear membrane reappears and the mitotic spindles disintegrate.
Therefore, we can confirm that in prophase, the nuclear membrane breaks down and the filaments that make up the mitotic spindle are formed.
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assuming independent assortment, how many different gametes can be produced from the genotype aabbcc
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Assuming independent assortment, only one type of gamete can be produced from the genotype aabbcc due to homozygous condition.
The law of independent assortment, given by Mendel states that the inheritance of the allele of a certain character into the gamete is not influenced by the presence of other genes. The example of this law of the dihybrid cross of Mendel.
Gamete is the reproductive cell, that when fused with another reproductive cell of different gender, gives rise to an embryo. A gamete from a parent contains only one allelic form of all the genes. This is the reason why in homozygous condition, only one type of gamete is formed as their are no allelic variations.
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Which process led to the evolution of polar bears and brown bears from a common ancestor?
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Answer:Evolution of brown bears to polar bears
Evolutionary studies suggest that polar bears evolved from brown bears during the ice ages. The oldest polar bear fossil, a jaw bone found in Svalbard, is dated at about 110,000 to 130,000 years old. DNA comparisons suggest the species may have split at least 150,000 years ago, and maybe longer.
Explanation:
All of these statements about Emperor
Justinian are true EXCEPT for which
one?
A. He ordered extensions to the walls of Constantinople.
B. He invaded and sacked the city of Rome.
C. He erected public facilities like schools and
aqueducts.
D. He ordered the construction of a great cathedral.
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Answer:
B
Explanation:
effect of habitat fragmentation on genetic drift habitat fragmentation is a big concern to conservation biologists. how will habitat fragmentation affect evolution by genetic drift?
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Habitat fragmentation will increase the effect of genetic drift and lead to a decrease in variation.
What Habitat fragmentation ?Genetic drift is the phenomena that occurs in populations of organisms as a result of unintentional occurrences that change the frequency of gene variants. The process may cause an alteration in the characteristics of the organisms, which would result in their evolution.
Habitat fragmentation is the process of cutting a habitat up into smaller fragments. This procedure reduces the population's size, which accelerates the population's genetic drift. Due to the unusual alleles being eliminated from the population, this process reduced genetic variation.Learn more about Habitat fragmentation here:
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what is the best test reagent for protein quantitation? why is that reagent considered to be the best reagent?
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ProteOrange reagent is the best test reagent for protein quantitation.
The ProteOrange reagent's distinctive structure enables the precise protein detection in solutions with concentrations between 10 ng/mL and 10 g/mL. This degree of sensitivity is far higher than that attained by the Bradford assay, Lowry assay, BCA technique, or 280 nm absorption measurements.
ProteOrange Reagent- A fluorescent dye called ProteOrange is used to stain proteins in gels. SYPRO orange's equivalent is called ProteOrange.
Reagent- A substance that is used because of its chemical or biological effects (for example, in creating a product, developing images, or detecting or measuring a component).
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5. A population of pigeons on the west side of town has a per capital annual growth rate of 0. 7. A
separate population of pigeons on the east side of town has a per capita annual growth rate of
0. 10. If both populations are growing exponentially and both are censused the following year, In
which of the populations will dN/dt be greatest?
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The term "population" usually refers to the total number of people living in a certain area, such as a city or town, region, nation, continent, or the entire world. Governments frequently use censuses, a procedure for gathering, analyzing, compiling, and releasing statistics regarding a population, to determine the size of the resident people within their jurisdiction.
Which of the populations will dN/dt be greatest?
You will be unable to respond to this question because you are unaware of the beginning size of the populations.
dN/dt will be higher on the east side if the two population sizes are equal or if the east side population is greater than the west side population.
However, if the west side population is sizable and the east side population is considerably smaller, the west side population's dN/Dt may be higher than the other.
In ecology, a population is a collection of creatures belonging to the same species that live in the same region and are able to breed with one another. An region with a reproductive population is one in which interbreeding between any two individuals therein is both conceivable and more likely than cross-breeding with individuals from other places.
The Lincoln index is a tool used in ecology to gauge a species' population in a given region.
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When someone uses the phrase "population," they typically mean all of the people living in that area, whether it be a city or town, a region, a nation, a continent, or the entire world. To estimate the population inside their borders, governments frequently conduct censuses.
What will be the population with the highest dN/dt?When someone uses the phrase "population," they typically mean all of the people living in that area, whether it be a city or town, a region, a nation, a continent, or the entire world. To estimate the population inside their borders, governments frequently conduct censuses.
You won't be able to respond to this question because you don't know the population's initial size. dN/dt will be higher on the east side if the two population sizes are equal or if the east side population is greater than the west side population. Ecologists assess a species using the Lincoln index.
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how the water cycle relates to 3 of the Earth's spheres.
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Answer:
Evaporation of water from the hydrosphere will cause it to become part of the atmosphere.
Precipitation will let the water in the atmosphere can return to the hydrosphere. Or alternatively, it will sink into ground as groundwater and become part of the geosphere.
. Where in the brain is the ability to control impulses located and how does it affect adolescent behavior?
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Answer:
The Prefrontal Cortex (The frontal lobe) is the part of the brain where thinking, decision making, and thinking about consequences occur. Changes in this part of the brain occur when you are in adolescents witch can cause mood swings, and inability to control some impulses.
Explanation:
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olution's patterns manifest as nested similarities. nesting occurs between molecular sequences of evolutionarily related organisms and between the different taxa arranged in a phylogenetic tree. true false
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Evolution's patterns manifest as nested similarities. nesting occurs between molecular sequences of evolutionary related organisms and between the different taxa arranged in a phylogenetic tree. True
Phylogenetic tree is a branching diagram that shows the evolutionary relationships between various species.
Nesting behavior is an urge in the pregnant animal to prepare a home for the upcoming generation which occurs due to increase in the amount of estradiol to protect them from predators and environment.
Nesting behavior is also taken consideration to understand the phylogenetic similarities between various species.
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how would wind energy be used in the production and development of trail mix
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When the kinetic energy of the wind is turned into mechanical power, wind energy is produced. Massive wind turbines are employed to sustain our houses' and businesses' electrical infrastructure today. But since the invention of the windmill, we've been using the wind's energy to do things like pump water and grind grain.
What additional purposes does wind energy serve today? Here's a deeper look at how we're utilizing wind energy.
1. To lessen our negative environmental effects, we employ wind energy.
A clean and non-polluting source of energy is wind power. When wind power facilities were originally built in the 1990s, they were able to offset 2.5 billion pounds of carbon dioxide and 15 million pounds of other pollutants that would have been produced by the production of electricity from fossil fuels. That equates to the planting of approximately 200 million trees.
2. We employ wind energy to reduce the total cost of energy generation.
It is true that early investments in wind energy are greater than first investments in electricity from fossil fuels. The equipment required to build a wind turbine accounts for around 80% of its price. Considering the life cycle When long-term demands are taken into account, the cost of wind energy is cheaper since fuel and operational costs are significantly lower throughout the course of each wind generator.
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What two characteristics are useful for supporting the photosynthetic mode of energy generation found in euglenids?.
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eyespot and flagellum are two characters useful for supporting the photosynthetic mode of energy generation found in euglenoids.
What are the three ways that protists get their nutrition?The majority consume or absorb food, however others make their own nourishment. Flagella, pseudopods, or cilia are used by the majority of protists to move. One-celled amoeba and paramecium are two protists that consume other species for food. Others, like the one-celled euglena and the multicellular algae, produce their own food through photosynthesis.
Euglenoids are green microorganisms that are heterotrophic and autotrophic.
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Organelles are important to cells for many reasons. Choose which answer below is NOT a reason organelles are important to cells. Helps the cell communicate with other cells. Helps the cell reproduce. Make cells grow faster. Provide the materials a cell needs to function.
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Answer:
Organelles provide the materials a cell needs to function.
OrganelleAn organelle is like an organ for a cell, it helps the cell function. Each organelle has a specific function to help the cell stay alive. Maybe cells weren't as different from us as we thought!
Hope it helps.
which of these brain abilities is what makes the human brain unique? plasticity action potential axon all-or-none response
Answers
Answer:
plasticity
Explanation:
plasticity is ongoing throughout life and involves brain cells other than neurons,it occurs as a result of learning,experience,and memory formation. This helps the brain modify it connections or wire itself,without this the brain can not recover from brain injury or would not be able to develop from infancy through to adulthood.
the concept that cells or organisms maintain specific internal conditions is called blank . multiple choice question. feedback responsiveness homeostasis adaptation
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what is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.
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The answer to the above question is The hypothesis was not supported: the data indicated that too much fertilizer can inhibit plant growth.
What is fertilizer?To provide plant nutrients, soil or plant tissues may be treated with any substance, whether it is of natural or synthetic origin called fertilizer. Liming agents and other non-nutrient soil amendments may not be the same as fertilizers. There are numerous natural and artificial fertilizer sources. Fertilization for the majority of contemporary agricultural practices concentrates on the three macronutrients nitrogen (N), phosphorus (P), and potassium (K), with sporadic additions of supplements like rock dust for micronutrients. Farmers use a variety of methods to apply these fertilizers, including hand tools, large agricultural machinery, or pelletized or liquid application processes.
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homeostasis is a state in which . question 4 options: a) vital functions of the body increase b) vital functions of the body are maintained at a normal level c) vital functions of the body decrease d) some body functions increase while others decrease
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Homeostasis is the state in which the vital functions of the body was maintained at a normal level
What is homeostasis? Homeostasis is any self-regulating process that is by which an organism tends to have maintain the stability while the adjusting to conditions that are best for its survival. If the homeostasis is successful, then life continues; if it's unsuccessful, the results in a disaster or the death of the organism
The Homeostasis, as currently defined, is a self-regulating process by which the biological systems was maintain stability while the adjusting to the changing of external conditions the Three examples of the homeostasis are: Body temperature was regulation. the Blood pressure regulation. the Blood sugar regulation.
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this method of studying religions includes an exploration of religion beliefs in the context of the human genome.
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The method of studying religions includes an exploration of religion beliefs in the context of the human genome Sociology.
Sociology is the study of social structures and human connections. The study of sociology covers a wide range of topics, including anything from crime to religion, the family to the state, racial and social class distinctions to shared cultural values, societal stability to drastic change in entire societies.
Sociology is a fascinating and enlightening academic topic that examines and discusses significant issues in our daily lives, our communities, and the wider globe. Sociology looks into the social factors that contribute to and are affected by personal phenomena like romantic love, race and gender identity, family conflict, deviant conduct, aging, and religious belief.
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cell-free-dna-based copy number index score in epithelial ovarian cancer-impact for diagnosis and treatment monitoring
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Cell-Free-DNA-Based Copy Number Index Score in Epithelial Ovarian Cancer-Impact for Diagnosis and Treatment Monitoring, the statement is correct.
What is ovarian cancer ?The female reproductive system have two ovaries, and it is a size of an almond produce eggs and other female reproductive hormones like estrogen and progesterone.
Ovarian cancer is referred as the abnormal growth of cells formed in the ovaries where the cells multiply continuously and can invade, destroy healthy tissue.
The symptoms of ovarian cancer include Abdominal bloating or swelling, Quickly feeling full when eating, Weight loss, Discomfort in the pelvic area, Fatigue, Back pain, constipation, frequent urination.
The types of ovarian cancer include Epithelial ovarian cancer most common type of ovarian cancer related to cancer arise from the surface of the ovary, secondly Fallopian Tube Cancer and Primary Peritoneal Cancer.
Germ Cell ovarian cancer refers to cancer in reproductive cells, Stromal cell ovarian cancer observed in connective tissue cells, Small cell carcinoma (SCCO) rare ovarian cancer in ovarian epithelial cells.
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A streak plate may be used to identify which mineral property? (1 point)
O color
O luster
O cleavage
O tenacity
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A streak plate is used to identify the color of minerals.
Streak plate is a piece of porcelain upon which the mineral is scraped. This is done to test for the opacity of color of the minerals. Hence streak of the minerals are indicators of their color. The porcelain used is in its raw form, without any glaze covered on its surface.
Minerals are the inorganic substances present in the environment, formed due to natural geological processes. Minerals can occur in their native form or may be present in the form of oxides, sulfides, nitrates, etc. The area where these minerals are found is called an ore.
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Answer:
1. color
2. Minerals are components that make up rocks.
Minerals are naturally occurring substances.
Minerals are made of one element or one compound of elements.
3. Luster
tyndall and cohn's experiments in the 1870s showed the presence of a heat-resistant form of bacteria called a(n)
Answers
Tyndall and Cohn's experiments in the 1870s showed the presence of a heat-resistant bacteria called Endospore.
What are Endospores?Endospores are a special class of bacterial reproductive structure that remains conserved as dormant for emerging during advantageous periods, which is observed in the group Bacillota.
In conclusion, Tyndall and Cohn's experiments in the 1870s showed the presence of a heat-resistant bacteria called Endospore.
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Some viruses are surrounded by an envelope. This viral envelope contains lipids and surface proteins, and it was originally a part of the cell’s-
A. Cytoplasm
B. Membrane
C. Genome
D. Cytoskeleton
Answers
Answer:cytoplasm
Explanation:
Explanation:
on a phylogenetic tree, each node (branchpoint) represents a divergence event, and the length of the branches represents the number of molecular changes that have taken place between the nodes.
Answers
It's true, on a phylogenetic tree, each node (branchpoint) represents a divergence event, and the length of the branches represents the number of molecular changes that have taken place between the nodes.
Phylogenetic tree :A phylogenetic tree is a visual representation of how different creatures have evolved over time. Phylogenetic trees are theories, not proven truths. A phylogenetic tree's branching structure demonstrates how different species or other groupings have developed from a common ancestor or ancestors.
Types of Phylogenetic TreesRooted tree - Speculate about the tree's leaves or branches' most recent common ancestor.Un-rooted tree - Don't assume anything about the most recent common ancestor; instead, use an example involving leaves or branches.Bifurcating tree - A rooted bifurcating tree takes the form of an unrooted binary tree, a free tree with exactly three neighbors at each internal node, whereas an unrooted bifurcating tree takes the form of an unrooted binary tree, a free tree with exactly two descendants arising from each interior node (that is, it forms a binary tree).To know more about ancestor visit :
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pepper mild mottle virus, a plant virus associated with specific immune responses, fever, abdominal pains, and pruritus in humans.
Answers
Pepper Mild Mottle Virus, a Plant Virus Associated with Specific Immune Responses, Fever, Abdominal Pains, and Pruritus in Humans. It is a correct statement.
What is the effect of PMMoV on immune responses?Some metagenomic studies have helped in the recognition of Pepper mild mottle virus (PMMoV) which is viable. It is a plant virus seen in the stool of healthy subjects. The source of this pathogen has not been determined.
There is a study that has recognized a local source of this virus and linked its presence to RNA in the stool. It had a specific immune response and clinical symptoms.
The clinical symptoms can be attributed to other factors that include spicy food. The data suggests that there is a possibility of a pathogenic role which can be direct or indirect in the case of plant viruses in humans.
Therefore, it is a correct statement.
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name the peripheral nervous system component responsible for the transmission of action potentials from the cns to the periphery.
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The component of the peripheral nervous system responsible for the transmission of action potentials from the CNS to the periphery is motor neurons.
What are motor neurons?Motor neurons are a special class of nerve cells that transmit nerve impulses across the body, i.e., away from the central nervous system (CNS) towards muscle cells.
In conclusion, the component of the peripheral nervous system responsible for the transmission of action potentials from the CNS to the periphery is motor neurons.
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