Answer:
Green pigmented plastids that function in photosynthesis are called Chloroplasts
The plant species Arabidopsis thaliana has a genome containing approximately 135 million bp of DNA. For this problem, assume Arabidopsis has a core-DNA length of 145 bp and a linker-DNA length of 55 bp.
Determine the approximate number of nucleosome in each nucleus. Determine approximately how many molecules of histone protein H4 are found in each nucleus.
Answer:
700,000 nucleosomes and 1,400,000 H4 proteins
Explanation:
Number of base pairs for each nucleosome: 145 bp (core-DNA length) + 55 bp (linker-DNA length) = 200 bp
Genome size = 135 million bp of DNA = 135,000,000 bp >>
>> Number of nucleosomes in each nucleus = 135,000,000 / 200 = 700,000 nucleosomes
A nucleosome is composed of two copies of the H2A, H2B, H3, and H4 core histone proteins. In consequence, a nucleosome contains 2 two copies of the H4 histone protein >>
>> Number of H4 in each nucleus = 700,000 nucleosomes x 2 = 1,400,000 H4 proteins
The enzyme lactase will break down milk sugar, called lactose, into
glucose and galactose. Glucose and galactose are examples of which of
the following?
O amino acids
O phospholipids
O steroids
O monosaccharides
Answer: Monosaccharides
Mono saccharides are the sugar molecules in which only single sugar compound is present. The correct answer is option D that is monosaccharides.
What is the simplest form of sugar present in abundance ?Glucose is the abundant form of sugar present in the nature.
Lactose is the milk sugar which is broken down by the enzyme called as lactase into two of the monosaccharide units called as glucose and the galactose. The process is called as digestion in which the complex substances are broken down into the simpler compounds for the sake of digestion.
Amino acids are the bio compounds in which they are both containing amine and the carboxylic acids which are later forms proteins and the peptides together form the proteinaceous structures.
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A region generally is higher than an adjacent region if ____________ than in the adjacent region.
What unit of measurement would I use to measure the thickness of a hair?
Answer:
a micrometer
Explanation:
micrometer
Explanation:
So, of course it will be a micrometer.
Help with 1 and 2 (earth and science)
Answer:
The Earth is 4.6 Billion years old.
QUESTION 2:
Option A is the correct answer.
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Cells are the basic units of llfe. Viruses differ from cells in many key ways. Which of the
following is true?
A. Cells contain organelles, whereas viruses do not contain organelles.
B. Cells cannot maintain homeostasis, whereas viruses can maintain homeostasis.
C. Cells contain nucleic acids, whereas viruses do not contain nuclelc aolds.
D. Cells do not contain ribosomes, whereas viruses do contain ribosomes.
Answer:
A
Explanation:
Viruses don't contain organelles.
The statement which is true with respect to the cell and viruses is as follows:
Cells contain organelles, whereas viruses do not contain organelles.Thus, the correct option for this question is A.
What is a Cell?A Cell may be defined as the basis structural and functional unit of life. All living organisms are made up of cells. Cells are required for organisms in order to accomplish their metabolic activities, growth, development, etc.
Most living cell significantly consists of cell organelles except for bacteria. Viruses are non-cellular. So, these do not have organelles. Viruses simply utilize the host machinery in order to multiple and reproduce.
Therefore, cells contain cell organelles while viruses do not contain organelles because they lack cells. Thus, the correct option for this question is A.
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Epsom salts are solutes that do not pass through cell membranes. If one soaks in a hypertonic solation of Epsom salts, which of the following will occur?
a. water will enter the body by osmosis
b. the water will leave the body by osmosis
c. Epsom salts will enter the body by diffusion
d. Epsom salts will leave the body by diffusion
Answer:
B
Explanation:
The net movements of water from the region of higher water potential to the region of low water potential through a selectively permeable membrane is osmosis. It is a form of diffusion which involves the transport of water molecules.
In this present scenario water molecules pass through the selectively permeable membrane from higher water potential in the body, to lower water potential but high solute potential (Epsom salts). The later is called an hypertonic solution,this is because it has higher solute potential ,thus higher salt concentration than the surrounding medium,therefore water pass by osmosis into the Epsom salts.
If one is placed in this solution,the cells shrink as they lose water to the more concentrated Epsom.(hypertonic solution)
However, the body homeostatic mechanism through the kidney ensure re-absorption of fluid back to the body from the DCT and CT, via anti diuretic hormone to preserve the cell and the person.
how does the complexity of ecosystems contribute to their sustainability
Answer:
An ecosystem is, by nature, a functional whole of organisms and inanimate environmental factors in a coherent area, which includes both natural and non-natural objects (animals, plants, rocks, etc.) in a certain limited area.
Thus, there are ecosystems that have greater degrees of diversity than others, depending on the different variants of living beings and plants that compose it. The more diverse an ecosystem, the more complex it will be considered. Thus, the more complex and varied it is in terms of its composition, the more sustainable it will be. This is so because, given the differences between the different members of the ecosystem, there is not such a great competition for the resources of the living space, since each species has a different interest and consumes different resources. In this way, a balance is generated by which the different members of the ecosystem consume the resources necessary for their subsistence without depleting the production capacity of the ecosystem.
Answer:
v:
Explanation:
On a farm, a group of squirrels collect acorns from an oak tree. Not all the acorns are collected on the ground, the birds can also eat the acorns. These nuts are spread around the land by both the animals resulting in new trees growing on the farm. What level of organization is represented in the example and how do you know?
Answer:
ecosystem
Explanation:
The level of organization shown in the example is "ecosystem" because the example represnts interaction between two different population with acorns on the land.
Ecosystem is defined as the interaction of groups of organisms in biological domain with abiotic enviornment.
The example, groups of organisms include "squirrels and birds" and abiotic enviornment include "acorns" or "nuts".
Hence, the correct option is "ecosystem".
A jaguar that eats its prey and then bounds across the rainforest after another possible meal is representing the characteristics of obtaining and using energy?
True or False
Answer:
the above statement is correct True. He obtains energy then uses it to get more.
Explanation:
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Write 5 factors that affect or harm our environment and explain how to alleviate that situation
Answer:
Explanation:
The subject of detrimental environmental change has received much attention in the news media for some time. Scientists, policy makers, and the public have become increasingly concerned about the threat that such change, if it continues unabated, poses for the future. Growing numbers of scientists from a variety of disciplines have been systematically studying specific aspects of this change and attempting to identify effective strategies for preventing or mitigating potentially catastrophic effects.
the 5 factors are
*Dimensions of the Problem *
Some earth and atmospheric scientists have been documenting an increased concentration of carbon dioxide and other "greenhouse gases" in the atmosphere and have been attempting to better understand how a continuing accumulation will affect the future world climate (Houghton and Woodwell, 1989; National Research Council, 1983). Others have been studying
2)Behavioral Causes of Environmental Change
Many of the most readily identified causes of these changes are human activities. Major contributors to the accumulation of greenhouse gases in the atmosphere include the burning of fossil fuels for heating and energy generation and the use of chlorofluorocarbons (CFCs) as coolants and aerosols. The burning of fossil fuels is also a major cause of acid rain, which is formed when airborne sulfur dioxide and nitrogen oxides combine with water vapor. Air pollutants include ozone, carbon monoxide, lead, sulfur dioxide, nitrogen dioxide, and particulates—all by-products of industrial and energy-generation processes. Stratospheric ozone thinning is believed to be a direct consequence of the accumulation of CFCs in the upper atmosphere.
3}POSSIBLE APPROACHES TO THE PROBLEM
The problem of detrimental environmental change is broad in scope and considerably beyond the ability of the human factors research community to solve. But human factors researchers can contribute greatly by working toward the goal of finding effective ways to modify, or mitigate the effects of, the human behavior that is a major cause of such change. It is useful to make a distinction between attempting to modify behavior directly and attempting to modify it indirectly by changing technology so that its use will be less detrimental to the environment
4}Direct Behavioral Change
Possible ways to directly induce behavioral change include the use of coercion (legislation and regulation, backed up with the threat of civil or criminal sanctions), incentives (tax and other monetary incentives, public recognition, and awards), education (making people aware of problems and what can be done about them), and persuasion (appeals to moral responsibility or altruism—or the possibility of embarrassment or shame). All of these methods have been tried, many times in some cases, and in numerous variations.
5}Changing Technology
One may work on the goal of water conservation by trying to persuade people to use less water when taking showers by, say, taking shorter showers, keeping the tap less than wide open, or keeping the tap closed while actually washing. Alternatively, or in conjunction with efforts to change behavior, one can attempt to design shower heads that automatically conserve water by limiting the flow when the tap is fully open but that still provide adequate water for showering. Ideally, one would like a water-miser shower head whose spray is preferred by users, who then will be motivated to use this head whether or not they are concerned about environmental change.
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The processing of combining what you know with what you have learn to draw logical conclusion is called
Answer:
Inferences
Explanation:
An inference is an idea or conclusion that's drawn from evidence and reasoning.
Which of the following is NOT true of natural selection? a) It requires genetic variation b) It results in descent with modification c) It always results in the strongest individuals d) It involves differential reproductive success e) It involves genetic variation and differential reproductive success
Answer:
The answer is e
Explanation:
Indicate whether each of the following statements about regulatory proteins is true or false.
1. Regulatory proteins control transcription initiation by modulating the ability of DNA polymerase to bind to the promoter.
2. Regulatory proteins function by binding to specific sequences on the DNA called regulatory sequence.
3. Hundreds of regulatory sequences have been identified and each one provides a binding site for a specific protein that is able to recognize the sequence.
4. In order to recognize and bind to the correct regulatory sequence, a regulatory protein must unwind and separate the two strands of the DNA double helix.
5. Binding of a regulatory protein to DNA either inhibits transcription by getting in the way of RNA polymerase or stimulates transcription by favoring the binding of RNA polymerase to the promoter.
6. Repressors are regulatory proteins that bind to RNA polymerase and act to prevent or decrease the initiation of transcription.
7. Activators are regulatory proteins that bind to enhancers and act to stimulate the initiation of transcription.
Answer:
WAP
Explanation:
FOR
You can poach fish in _______ or pots of various sizes.
Answer:
you can poach fish in large pan or pots of various sizes
Explanation:
hope this helps you.
Which of the following is NOT an example of sustainable logging?
practicing selective cutting when logging trees
replanting new trees in areas that have been cut
harvesting trees in ways so they drop seeds behind
leaving diseased trees to infect other trees
Answer: Leaving diseased trees to infect other trees
Explanation:
Sustainable logging refers to methods that balance the needs of people with the needs of the environment such that forests are protected in the long term.
These include selectively cutting trees so that others can remain and thrive, replanting new trees and harvesting in such a way that room for continuity in terms of seed dispersal is possible.
When a tree is infected with disease however, leaving it could be detrimental to the survival of trees in the area as the infected tree could infect others. When a diseased tree is noticed, swift action should be taken to mitigate the threat by either treating the tree or if it is too infected, cutting it down.
The following statements summarizes the results of an experiment related to exocytosis or endocytosis. In this case, explain the relevance of the experiment and its result to our understanding of these processes. Addition of the drug colchicine to cultured fibroblast cells inhibits movement of transport vesicles. 1. Colchicine is a drug that prevents intermediate filament assembly, thereby disrupting intermediate filaments-based functions 2. Colchicine is a drug that prevents endocytosis, thereby disrupting phagocytic functions. 3. Colchicine is a drug that prevents microfilament assembly, thereby disrupting microfilament-based functions 4. Colchicine is a drug that prevents microtubule assembly, thereby disrupting microtubule-based functions.
Answer: 4. Colchicine is a drug that prevents microtubule assembly, thereby disrupting microtubule-based functions.
Explanation:
Endocytosis can be defined as trapping of a substance from outside of the cell. Exocytosis can be defined as the process of fusion of the vesicles with the plasma membrane and excreting their contents outside the cell.
Colchicine is a drug that blocks the polymerization of microtubules in the cytoskeleton. This further prevents the transportation of vesicles out of the cell and in the cell. Thus this will prevent the exocytosis and endocytosis of the transport vesicles and will affect cellular metabolism.
Which of the following is an example of statistical interference?
A. having a sample size that is too large
B. calculation errors
C. selecting one demographic for surveying
D. selecting a representation of a population and translating it to a larger group
Answer:
D). Selecting a representation of a population and translating it to a larger group.
Explanation:
Statistical inference is described as the method of employing data analysis to draw conclusions about the characteristics/properties of a population on the basis of a casual sample collected from the population. Such a method is primarily employed to learn the characteristics of a large population size.
As per the question, 'selecting a representation of a population and translating it to a larger group' would exemplify statistical inference as a sample is collected as a representation of the population for learning the characteristics and applying it to the entire group. Thus, option D is the correct answer.
Vibrio cholera is a bacterium that causes the diarrheal disease known as cholera. In the 1800s
Louis Pasteur noticed that old Vibrio cholera cells did not cause disease in chickens, whereas new
V. cholera cells did cause disease. He also noticed that chickens previously inoculated with old
cells could not be made sick by new V. cholera cells. Based on Pasteur's observations, which of the
following represents a good hypothesis?
Answer:
''If the old cells inoculated in chicken, it produces resistance in the chicken against new V. cholera cells.''
Explanation:
From the data provided by Louis Pasteur, we make a hypothesis i. e. ''If the old cells inoculated in chicken, it produces resistance in the chicken against new V. cholera cells.'' From these observation we can assume that by allowing old V. cholera cells to chicken, it did not cause any disease but make immunity against the new V. cholera cells which are more effective from old V. cholera cells.
Alleles A and a reside at a locus on the same chromosome as a locus with alleles B and b. Aa Bb is crossed with aa bb and the following progeny are produced: Aa Bb 5 Aa bb 45 aa Bb 45 aa bb 5 What conclusion can be drawn about the arrangement of the genes on the chromosome in the Aa Bb parent
Answer:
The two genes are linked together
Explanation:
The conclusion that can be drawn about the arrangement of the genes on the chromosome in the Aa Bb parent is that the two genes are linked together. That is, they do not assort independently.
When two genes are linked together, the number of recombinant offspring would be more than the number of offspring with parental traits. The frequency of recombination would also not exceed 50%.
Recombination frequency = number of recombinant offspring/total number of offspring x 100%
Number of recombinant offspring = 45 + 45 = 90
Total number of offspring = 45 + 45 + 5 + 5 = 100
Recombination frequency = 90/100 x 100% = 10%
Hence, the two genes Aa and Bb are said to be linked together.
When measuring wellness, you must consider
А. all components of health
B. your physical fitness being in the top 10% of the population
C. being free of diseases
D. both physical and mental health
what source is ketchup
Answer:
condoment
Explanation:
i found this because this is something you put on yoir burger or fries
What will happen if the number of snakes goes down?
Answer: The population of animals that they feed on will grow.
Lactic acid fermentation takes place
after glycolysis in the absence of:
ОАТР
O Carbon dioxide
O Glucose
O Oxygen
Which statement is true about the development of the modern computer?
Answer:
C) Scientists who have developed computers were improving on the work of scientists before them.
, why is studying atoms and their parts and particles helpful to people?
Answer:
helps us understand more about the universe
How many grams are in 1 mole of lithium
Answer:
6.941 grams
Explanation:
We assume you are converting between moles Lithium and gram.
In the scientific method, how is a hypothesis tested? By becoming a theory By doing minimal research By experimentation and observation By disputing the results of other scientists
Answer:
by experimentation and observation
Explanation:
Answer:
C
Explanation:
Which of the following statements correctly compares transcription in prokaryotes and eukaryotes?
A. Bacteria have one type of RNA polymerase, whereas eukaryotes have at least three.
B. RNA polymerase in both prokaryotes and eukaryotes produce the same RNA molecules.
C. Both eukaryotes and prokaryotes recognize a polyadenylation signal in order to terminate transcription
D. Prokaryotes have at least three types of RNA polymerases, whereas eukaryotes only have one.
Answer: Which of the following statements correctly compares transcription in prokaryotes and eukaryotes?
Explanation: It would be B
The correct comparison between transcription of prokaryotes and Eukaryotes is that prokaryotes have one type of RNA polymerase, whereas eukaryotes have at least three.
Prokaryotes Transcription:
Only three promoter elements: -10, -35 promoters, and upstream elements. Prokaryotes have only one type. In prokaryotes, transcription and translation occur simultaneously.Polyadenylation do not occur in prokaryotes. Transcribed mRNAs in prokaryotes are polycistronic. In prokaryotes, termination is done by either rho-dependent or rho-independent mechanisms.Eukaryotic Transcription:
Eukaryotes contain many different promoter elements: TATA box, initiator elements, CAAT box, etc.There are three types of RNA polymerases, I, II, and III in Eukaryotes, The RNA is transcribe in the nucleus and then translate in the cytoplasm.Eukaryotic mRNAs are monocistronic.Termination is done by two elements: a poly(A) signal and a downstream terminator sequence.Therefore, the correct comparison between transcription of prokaryotes and Eukaryotes is that prokaryotes have one type of RNA polymerase, whereas eukaryotes have at least three.
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Alkaline is another name for what solution
Answer:
water
Explanation:
Answer:
it's another name for a basic solution.
Explanation:
Any alkaline solution has a pH that is higher than 7, therefore making it basic.