During which phase of meiosis do spindle fibers move the sister chromatids to the center of the cells?
interphase
anaphase II
prophase I
metaphase II
Answer:
Metaphase II
Explanation:
During metaphase, the spindle fibers move the chromatids to the center (creates what is known as metaphase plate) to that they can be separated.
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An atom charged -3 has atomic number 23 and atomic mass 32 what is the number of electrons of this atom
An atom charged -3 has the atomic number 23 and an atomic mass of 32, the number of electrons of this atom are 20.
What is an Atomic number?An atomic number may be defined as the number of a chemical element in the periodic table, in which the elements are positioned in order of expanding the number of protons in the epicenter known as the nucleus.
In this question, the number of electrons is 20, because the number of electrons in an atom is always equal to the atomic number of that atom, which is 23 here.
But, an atom charged -3, so, 23-3 = 20. If an atom is charged negative, the number of electrons is determined by subtracting it with an atomic number, while if it is charged positive, the number of electrons is determined by adding it with an atomic number.
Therefore, it is well described above.
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Term Definition
7. Independent variable a. The number of unpopped popcorn kernels
8. Controlled variable b. The brand of popcorn
9. Responding variable c. The time the popcorn is cooked
The terms with respect to their definitions are matched below:
Independent variable: The time the popcorn is cooked. Controlled variable: The brand of popcorn. Responding variable: The number of unpopped popcorn kernels. What is an Independent variable?An independent variable may be defined as a variable that stands isolated and isn't altered by the other variables you are trying to measure in your experiments.
A controlled variable may be defined as a variable that remains unchanged during the course of whole experiments.
A responding variable may be defined as a variable that responds according to the effect of controlled and independent variables.
Therefore, it is well described above.
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How is mitosis different in plants and animals?
Answer:
The most important difference between plant and animal mitosis is the cytokinesis. In plants, a cell plate is formed, whereas in animals a cleavage is formed.
State the 4 effect of soil acidity
The four effects of soil acidity are:
Formation of low solubility compounds.Greater retention by soil colloids.Conversion of soluble forms to ions that plants cannot absorb.Can inhibit or stimulate microbial activity.Thus we can conclude that, soil acidity affects soil fertility, leaf nutrient uptake, and plant growth in a way that is confounding.
The usage of urea, elemental S fertilizer, and the development of legumes are the major contributors to soil acidification on agricultural land.
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What is the function of the labeled structures?
A:
B:
C:
deliveres information to the next cell
carries information away from the body cell
receivces information
Answer:
its d come on now
Explanation:
A.The functions of dendrites are to transfer the received information to the soma of the neuron through the nervous systems.
B. This myelin sheath allows electrical impulses to transmit quickly and efficiently along the nerve cells.
C.transmission of impulses from one neuron to another across synapses with the help of neurotransmitters
What is a convection current
Answer:
Convection currents transfer heat from one place to another by mass motion of a fluid such as water, air, or molten rock. The heat transfer function of convection currents drives the earth's ocean currents, atmospheric weather, and geology.
Explanation:
whitch is the best definition of activation energy
Answer:
the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport.
Explanation:
You will write an argumentative essay to the “Bill and Melinda Gates Foundation” to convince them to support the use of genetically modified organisms in agricultural development and support your team in developing the transgenic strain, knowing that this organization can provide the needed funding for your project.
The word count of your essay should be between 300 and 750.
Your essay should include at least 10 keywords from table 2.
Your essay will discuss how the new strain of the genetically modified plant will contribute to eradicating disease by using appropriate scientific methods that take into consideration any possible adverse health effects and environmental concerns (such as new potential allergies, herbicide resistant weeds, and biodiversity issues for replacing other strains). It will also discuss why community acceptance of the new strain is important as a sustainable long-term solution as opposed to supplements or other food additives.
The purpose of your essay is to establish a stance on the urgency of the new strain issue by providing reasons and supporting evidence. When you’re writing a persuasive essay, you need more than just an opinion to make your voice heard. Even the strongest stance won’t be compelling if it’s not structured properly and reinforced with solid reasoning and evidence. Your essay needs to be well written and should include the following 4 elements:
1. Introductory paragraph:
The first paragraph of your essay should outline the topic, provide background information necessary to understand your argument, outline the evidence you will present and states your thesis.
2. The thesis statement:
This part of your essay is a concise, one-sentence summary of your main point and claim.
3. Body paragraph:
You will explain the reasons why you support your thesis. You can discuss more than one idea or piece of evidence that clearly and concisely explain why the reader should agree with your position.
This is where you will back up your claims with examples, research, statistics, studies, and scientific evidence based on your knowledge in genetics and your answers in the graphic organizer.
Address opposing points of view and disprove them or explain why you disagree with them. Presenting facts and considering the topic from every angle adds credibility and will help you gain the reader’s trust.
4. Conclusion:
One paragraph that restates your thesis and summarizes all of the arguments made in your body paragraphs. Rather than introducing new facts or more arguments, a good conclusion will appeal to a reader’s emotions. In some cases, writers will use a personal anecdote explaining how the topic personally affects them.
Genetically modified organisms can help to alleviate hunger around the world by increasing crop yields.
What are Genetically modified organisms?Genetically modified organisms are organisms whose genetic material (DNA) has been altered in the laboratory by using genetic engineering.
Genetically modified crops can be resistant to different types of biotic and abiotic stressful conditions and thus increase crop yield.
Supporting evidence regarding the use of GMOs is based on empirical statistics about how these food helped to alleviate global hunger, especially in developing countries.
An essay about GMOs should ideally include information on genetic engineering techniques used in transgenesis.
Transgenesis refers to the genetic engineering techniques aimed at developing organisms carrying genes of others species. These techniques include, among others, the use of the CRISPR-Cas9 genome editing system, DNA recombinant strategies and vector expression constructs (e.g., viral recombinant vectors).
A thesis statement is a well-sustained question that can be tested (either confirmed or rejected) by information obtained using the scientific method.
GMOs have been shown to the safe since empirical scientific evidence revealed that genetically modified crops such as Bt maize do not cause allergies or diseases in human beings.
Moreover, GMOs can help to alleviate hunger around the world by increasing crop yields.
In conclusion, it is possible to state that GMOs might be beneficial when they are approved and released by proper governmental agencies such as the US Federal agency of Food and Drug Administration (FDA).
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Under the section heading "Darwin Develops His Theory", identify 3 things that Darwin
determined are required for evolution to occur. (Look at the example of the giraffe's
evolution under section "Applying Darwin's and Wallace's Theory" for help)
Answer:
heading "Darwin Develops His Theory", identify 3 things that Darwin
determined are required for evolution to occur.
When a baby is born four weeks before the end of the third trimester, it is most likely that the baby will.
A. be unable to grow toenails
B. be able to survive in the environment
C. lack fully developed eyes
D. have some missing organs
Answer:
B: be able to survive in the environment
Explanation:
he is a premature so he can survive under good care
Select the correct answer from each drop-down menu.
Both molecules and compounds are made up of
orm
B. Two or more atoms joined together by shared electrons
8. Substances made from two or more different elements are
Reset
Next
Answer:
We know that when two or more than two atoms join together they form an element.
When two or more than two elements join together, they form a compound.
When two or more atoms of an element join together then a molecule is formed.
When two types of atoms or elements join together then a compound is formed.
Hence, the complete statement would be :
Explanation:
We know that when two or more than two atoms join together they form an element.
When two or more than two elements join together, they form a compound.
When two or more atoms of an element join together then a molecule is formed.
When two types of atoms or elements join together then a compound is formed.
Hence, the complete statement would be :
Both molecules and compound area made up of atoms . Two or more atoms joined together by shared electrons form element.Substance made from two or more than two different elements are compounds.
When is your breathing likely to speed up?
A. When your heart cells need more carbon dioxide
B. When your white blood cells increase
C. When your blood cells have too
much oxygen
D. When your cells need more energy
Which of these is not a myth about globalization according to Lucas.
Group of answer choices
Policy – not trade or technology – is most responsible for inequality
Income doesn’t trickle down
Globalization has led to a decrease in global income inequality, not a reduction
Globalization has led to a decrease in global income inequality, not a reduction. Thus, the correct option is D.
First, there is evidence to suggest that globalization reduces inequality. Second, the wealthy will experience substantial income growth, which will increase the incomes of the lowest. Third, renouncing trade and technology is the only solution to the problem of rising inequality.
What is globalization?The spread of the flow of financial products, goods, technology, information, and jobs across national borders and cultural boundaries is referred to as globalization.
These beliefs are debunked by the recently published World Inequality Report, the first research study to in-depth analyze changes in wealth and income inequality across rich and developing countries over the past 40 years.
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What is the cause of lightning?
A. The different elevations of a cloud and the ground
B. Airflow between a cloud and the ground
C. Varying air pressure underneath a cloud
D. Different charges on the ground and the bottom of a cloud
Answer:
The different elevations of a cloud and the ground
is water losing through transpiration harmful or benefical for plant
Answer:
Beneficial. Read below
Explanation:
Water naturally does evaporate from the leaves. When it does, it makes a sort of suction in the 'pipes' of the plant. Think of it like when you drink from a cup with a straw. You take juice out from the straw by sucking it but that makes the juice still in the cup go up to replace that lost juice. This is how plants absorb water from the roots. If transpiration didn't happen, plants wouldn't be able to absorb water apart from osmosis but that would be too slow.
A steady state is associated with which of the following terms
Static system
Open system
Closed system
Non-living system
Organisms inherit specific traits and characteristics from their parents. Albinism is an inherited disorder that occurs when an organism is unable to produce or distribute melanin. Melanin is a substance in the body that helps determine skin color, hair color, and eye color.
An albino alligator.
Which is the basic unit of heredity that carries the trait of albinism from parent to offspring?
base pairs
genes
proteins
GENES are the fundamental unit of heredity that transmit albinism from one generation to the next. Thus, the correct option is A.
What is DNA?Deoxyribonucleic acid is a polymer made of two polynucleotide chains that coil around one another to form a double helix and which contains the genetic material necessary for all known creatures, including many viruses, to develop, function, grow, and reproduce.
Because they contain unique sets of instructions to encode certain proteins, which are passed down across generations, genes are regarded as the fundamental functional and structural components of heredity (i.e., they are inherited).
When a gene is expressed, certain DNA fragments (i.e., genes) are used as templates to produce messenger RNAs (mRNAs), which are complementary RNA sequences.
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The basic unit of heredity that carries the trait of albinism from parent to offspring is GENES. Thus, option "B" is correct.
What are genes?Genes are considered the basic functional and structural units of heredity because they contain specific sets of instructions to encode specific proteins, which pass across generations (i.e., they are inherited).
During gene expression, specific fragments of DNA (i.e., genes) are used as templates to create specific complementary RNA sequences called messenger RNAs (mRNAs) by a process called transcription.
Subsequently, these mRNAs are used to synthesize proteins by a process called translation.
The proteins arrange in the cell to produce specific phenotypes, i.e., specific observable features or traits.
In conclusion, the basic unit of heredity that carries the trait of albinism from parent to offspring is GENES.
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The final products of meiosis are O A. muscle cells B. reproductive cells O c. homologous cells O D. skin cells
Answer:
B. Reproductive cells
Explanation:
Meiosis is a reduction cell division that is observed in germ cells or reproductive cells.
help meee,A study was carried out on the emission of N2O in a sewage treatment plant (ETE) in the metropolitan region of Rio de Janeiro.
of January. During the study period, this ETE received sewage from 470,000 inhabitants. One particularity observed is that in addition to receiving domestic sewage, this station received, during a certain period of the day,the material leached from a sanitary landfill, responsible for causing an increase in the load of organic matter in the ETE in study. Continuous measurements of dissolved oxygen concentration and N2O emission were carried out at this station for 3
hours, in the period prior to the entry of the material leached from the landfill and in the period immediately after the entry of this material.
1-Why, soon after the material from the landfill, the concentration of dissolved oxygen decreased;
2-Why is there a significant increase in the emission of N2O soon after the entry of the leached material from the landfill? What bacterial processes can contribute to the increase in the emission of this observed gas
in this experiment?
The emission of N2O from the landfill site is called denitrification and it is caused by the action of denitrifying bacteria.
What is dissolved oxygen?The term dissolved oxygen refers to the amount of oxygen that is present in a water body. Now, we know that the addition of organic matter into water requires oxygen to break it own thus the dissolved oxygen content will go down in response to the added organic load.
The process that leads to the emission of N2O from the landfill site is called denitrification and it is caused by the action of denitrifying bacteria.
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Which organisms have the fewest similarities? Explain why these organisms still qualify as living things despite sharing few characteristics.
Vertebrates
invertebrate
plant
Plants are the organisms which have the fewest similarities and is denoted as option C.
What are Plants?
These are eukaryotes which perform photosynthesis and grow in the soil and on water.
It has few features such as leaves, roots etc and can perform activities such as respiration which is common in living things.
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Crops such as corn along
with plants such as
pansies, marigolds, and
cucumbers fall into which
of these categories of
angiosperms?
According to the research, pansies, marigolds, and cucumbers fall into dicots angiosperms category.
What are angiosperms?They refer to vascular land plants that produce seeds, flowers, and fruits.
It is classified according to the number of leaves, when the seed germinates and two cotyledons are produced they are categorized as dicots.
Therefore, we can conclude that according to the research, pansies, marigolds, and cucumbers fall into dicots angiosperms category.
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Answer: Annual plants.
Explanation:
Help please !! Urgently I need thus as fast as possible pleaseee
Explanation:
the plant will show positive phototropism..it will bend towards the direction of sunlight entering the box through the opening(the door)..
if it is watered , then the roots might grow and the plant would replenish, if not .then at some certain point, it won't show phototropism any longer..
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An invasive species has been introduced to a pond, using up many resources and resulting in the decline of several pond species.The same invasive species is introduced into the ocean. What is the most likely impact on ocean biodiversity?
The most likely impact on ocean biodiversity is very little because the ocean is large and has high biodiversity.
What is an invasive species?An invasive species is a species that colonized another environment generally due to human activities.
In this case, it is expected that ocean biodiversity doesn't not suffer changes due to the removal of the invasive species (it is not adapted).
In conclusion, the most likely impact on ocean biodiversity is very little because the ocean is large and has high biodiversity.
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effect of overexploitation of natural resources
Answer:
exhaustion
Explanation:
particularly by excessive forestry,fishing and hunting
Select the best answer for the question.
2. What should you do if you're asked to do a task that doesn't make sense to you?
A. Consult with your pharmacy professor.
OB. You shouldn't do the task.
OC. Ask your supervisor.
COD. Do it anyway.
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Which of the following changes to Earth is NOT caused by living organisms?
Explanation:
probably A but I'm not sure about it
Arrange the level of cell organization from the simplest to the most complex, with 1 being the simplest and 5 being the most complex. 1. 1 organism level 2. 2 system level 3. 3 tissue level 4. 4 organ level 5. 5 cellular level
Answer:
1. Cellular level
2. Tissue level
3. Organ level
4. System level
5. Organism level
Explanation:
Helppp match the definitions :)
Answer:
1. Amino acid
7. RNA
5. Nucleic acid
3. DNA
6. Protein
2. Catalyst
8. Substrate
Explanation:
1. AMINO ACIDS are the basic building block of proteins; they contain a carboxyl group (-COOH) and an amino group (-NH 2) in their structure. 2. A CATALYST is any substance that accelerates a chemical reaction without being used up in the reaction. They do this by lowering the activation energy of the reaction. 3. Deoxyribose nucleic acid (DNA) is a complex molecule containing the genetic code. It carries all the genetic information of living organisms. 4. AN ENZYME is a protein molecule that is specialized to speed up a specific chemical reaction in biological systems. It is referred to as a biological catalyst because it speeds up a chemical reaction in living systems. 5. NUCLEIC ACID is a sequence of sugars, phosphates, and nitrogenous organic bases. A nucleic acid (DNA and RNA) is a polymer of nucleotides, which are composed of the three molecules mentioned above. A sequence of nucleotides forms a NUCLEIC ACID. 6. PROTEIN is a large, complex organic molecule consisting of a large number of amino acids linked together by peptide bonds. The amino acid building blocks are linked together in a condensation reaction and catalyzed by Peptidyl transferase enzyme. 7. Ribonucleic acid (RNA) is a type of nucleic acid that participates in the synthesis of proteins. RNA is of three types viz: mRNA, rRNA and tRNA. They all play a role in the process of protein synthesis. 8. A SUBSTRATE is a compound that is involved in a chemical reaction and is chemically changed by the reaction. The substrate usually forms part of the reactant that yields the product.
(see attached)
H.M. maintained ______ memory as he was able to perform better each time he did the mirror-tracing task.
A) nondeclarative
B) declarative
C) priming
D) conditioning
E) episodic
