The question's statement would be true since there's known that a high percentage of our population does not have clear ideas of how our daily actions impact the environment. Maybe this is because currently, we don't have an important ecological education and culture as a society that transcends from learning spaces, such as school and college, to our jobs and the other social spaces, such as those for our entertaining.
in what phase do two haploid daughters those function routinely with their chromosomes and chromatin form
Answer:
Prophase II begins immediately after cytokinesis
Explanation:
The splitting of the diploid gamete into two haploid daughter cells. In order to prepare for the next division, prophase II condenses chromatin first into chromatids, and then more tightly into chromosomes.
1. If a colorblind female (XcXc) marries a normal male (XY), what are the chances of normal children? Colorblind children? Do a Punnet square to find the answer.
Female genotype- XcXc (colorblind)
Male genotype- XY (normal)
If we cross multiply these genotypes, the resulting offsprings would be:
XcX, XcX, XcY, XcY
The chances of having colorblind children are: 50%
XcY, XcY- all male
Normal children: 50%
XcX, XcX- all female (Carrier)
As more new ways of identifying and characterizing pathogenic bacteria emerge, the number of distinguishable microbial strains also seem to increase. Describe why you think this is the case
As new ways to identify and characterize pathogenic bacteria, the number of distinguishable microbial strains also increase because all the pathogenic bacteria differ in pathogenicity, and it gives a diverse form to study about the bacteria.
All pathogenic bacteria have a part that is virulent and causes the disease, and which is unique in each bacterium. Based on the virulent part, bacteria are divided into two strains - positive and negative.
The pathogenicity is known as the ability of the bacterium or bacteria to cause the disease in an individual. The pathogenicity depends on the strain of the bacteria. Bacteria may multiply in number or create offspring in order to infect the individual.
As we can see, the characterizing of pathogenic bacteria also increases the microbial strains. As, the bacteria infects, and the pathogenicity is based on the virulence of the bacteria, it gives us the idea of the strain of the bacteria. Hence, the diverse study of virulent parts of bacteria is responsible for the increase in microbial strains.
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Which two main processes take place to produce proteins?differentiation and specializationtranscription and translationmitosis and meiosisphotosynthesis and cellular respiration
Protein synthesis is the process by which cells make proteins. it occurs in two stages: transcription and translation. Transcription is the transfer of genetic instructions in DNA to mRNA in the nucleus.
What are histone proteins?a) Positively charged proteins that help to organise DNA in prokaryotic cells;b) Positively charged proteins that help to organise DNA in eukaryotic cells;c) Negatively charged proteins that help to organise DNA in prokaryotic cells;d) Negatively charged proteins that help to organise DNA in eukaryotic cells;
Histones are proteins that act as spools so the DNA can create structural units around them (nucleosomes). While the DNA is negatively charged, the histones are positively charged, which is important so them both can associate with each other. As the histones are present in the cell nucleus, they can't be found in prokaryotic cells as those has no nuclei. So, only eukaryotic cells have histones.
Therefore, the correct answer is b) Positively charged proteins that help to organise DNA in eukaryotic cells.
Describe two things scientists do when performing a peer review of another scientist's investigation to confirm that the results and conclusions are credible
Peer reviewers point out any flaws that need to be fixed before publishing and offer advice to authors on how to enhance the quality of their articles.
Briefing:The main means by which scientists present the findings of their research is in a published, peer-reviewed research article. Your paper is indexed and archived after it is properly published in a journal, becoming an indelible part of the body of knowledge.
What is the main purpose of peer review?Peer review has developed into a crucial part of the academic writing process in the scientific community. It makes sure that articles that are published in scholarly publications provide meaningful research answers and draw reliable conclusions from expertly done experiments.
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The release of ____ is controlled by negative and positive feedback mechanisms.
Question:
Explanation:
Hormones are important for homeostasis. Together with the nervous system, they control most of the functions of the human body. Most hormones are regulated by feedback mechanisms. A feedback mechanism is a loop in which a product feeds back to control its own production. Most hormonal feedback mechanisms involve negative feedback loops. In negative feedback systems, a stimulus causes the release of a substance whose effects then inhibit its release. In this way, the concentration of hormones in the blood is kept within a narrow range.
Answer: we can conclude that the correct answer is:
Hormones.
true or false? cell theory is scientific ideas showing that all life activities are done by cells
Answer
True
Explanation
The cell theory states that all organisms are made up of cells, animals and plants constitute of cells in their bodies. The cell contains an organelle called the nucleus which controls all life activities.
What do corals provide for zooxanthellae?A. a protective area B. sunlightC. a source of oxygen D. food
Corals and zooxanthellae have a symbiotic relationship in which coral mainly gives a protective area to the zooxanthellae that live in them, and also some nutrients.
Which historical event most directly contributed to the development of the cell theory?A The discovery and classification of thousands of species of organismsB The development of microscopes and higher powered lensesC The discovery that DNA is the genetic materialDThe development of theories of natural selection on evolution of organisms
Cell theory development has its roots in the development of the microscope and the techonology it needed, such as high powered lenses (OPTION B). This technological advance allowed people at that time, to realize how tiny, microscopic structures assemble tissues of living organisms. Which later one, would receive the name of "cells".
why is Spike Moss seedless vascular?
How does spike moss achieve fertilization/pollination?
Spike moss belong to the division Pteridophytes and hence are seedless and vascular. Their mode of fertilization is interior where the male gametes swims near the female plant in water and then fertilization takes places within the archegonium.
Pteridophytes are the first vascular plants to be developed. However they do not form seeds. The mode of fertilization in spores is sexual that occurs by the formation spores, that may also be called as gametes.
Archegonium is the female reproductive organ in the Pteridophytes. It appears as a flask-shaped structure. Thus archegonium contains the egg cell or the female gamete that fuses with the male gamete. The male alternative of archegonia is called antheridia.
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I got the answer of H, B, A, G, and wanted to know if it was right?
The order goes as follows: h,b,a,g. The order you put is right, since it encompasses the greatest distance: H-G, and within the other alleles. H-B, and A-G. Thus, it appears B-A as the middle space.
Which of the following is true?A) We can only get energy from the carbohydrates we eat. The rest of the macromolecules not broken apart, they are stored in the body or released as waste.B) The protein molecules that we eat are separated from the rest of the food and added directly to our muscle tissue to create more muscle.C) Glucose provides energy and atoms for cells to use. Most of the atoms we need to build our cells are available in carbohydrates like glucose.D) The human body is made of organic compounds, so we have to eat organic food to stay alive.
Let's analyze each statement:
A is false because even if we obtain energy primarily from carbohydrates, we can also obtain energy from proteins and lipids.
B is false because proteins are not only used to create more muscle but are needed for several functions in the cells.
C is true because glucose does provide energy and atoms for the cell to use, and carbohydrates are composed of carbon (C), hydrogen (H), and oxygen (O), that are three of the four more common elements in living organisms, the fourth is nitrogen (N).
D is false because organic food doesn't mean it has organic compounds (based on carbon), but refers to the methods followed to produce it
What are three words for 2050 (like dreary) you could list if we don’t take action on the plastic waste and it’s production in our environment
The text states consistent facts about the use and needs of the population over the topic of plastic waste, being the use of the five R's (refuse, reuse, repurpose, recycle, and reduce) an important conduct of how work for the improvement of the environmental care. Therefore, the text is correct.
If we don't take action on the plastic waste and it's production, three points that can happen are:
-Extinction of marine species such as turtles;
-Problems with landfills because of waterproofing and overcrowding in these spaces;
-Changing in the bodies of water flows, beacuse of plastic waste barriers.
Contrast RNA and DNA (Pentose Sugar)Could you please simplify/condense the answer to as few sentences as possible? Please and thank you.
The pentose of RNA and the pentose of DNA are almost the same, differing only in the molecule that binds to carbon number 2.
The ribose has an OH group attached to carbon 2
The deoxyribose has an H group attached to carbon 2
Symbiosis PRACTICEDirections: Read each of the relationship scenarios below. Identify the two organisms involved in the boxes labeled 'Organism 1' andOrganism 2', and identify whether they benefit, are harmed, or are neutral in the relationship. Lastly, classify what type of symbiosiseach example is in the third column.Example:Organism 1Symbiotic Relationship?ParasitismCordyceps Fungus(Benefits)Organism 2Ant(Harmed)1.A type of bacteria lives in the roots of plants. The bacteria helps the plants obtain nutrients. The roots are a moist home,which helps the bacteria grow and reproduce.Organism 1Organism 2Symbiotic Relationship?2.The fungus known as "chicken of the woods" grows on trees. The fungus breaks down the tree and gets its nutrients thatway. The tree decays, gets weak, and becomes very vulnerable to extreme weather.Organism 1Organism 2Symbiotic Relationship?KPHelp
In the first example we have:
Organism 1: Bacteria (Rhizobium spp.) (benefits)
Organism 2: Plants (Legumes) (benefits)
Sybiotic relationship: Mutualism :) , :)
In the second one:
Organism 1: Fungus (Laetiporus spp.) (benefits)
Organism 2: Trees (e.g. Oak) (harmed)
Sybiotic relationship: Parasitism :) , :(
How do hydrogen bonds contribute to body temperature regulation?
Hydrogen bonds contribute to body temperature regulation by one of the properties of water called high heat capacity. The water's high heat capacity is caused by hydrogen bonding among water molecules. These hydrogen bonds are broken down when heat is absorbed causing water molecules to move freely. When the temperature of water decreases, hydrogen bonds are formed; thereby releasing a considerable amount of energy.
Is my answer correct for roman 1 and roman ii
According to the problem we need density and frequency.
Density is defined as the number of individuals per area unit. Meanwhile, frequency is the probability of finding a species in a certain area.
The formulae are as it follows
Density (D)= Total of individuals/ sampled area
Frequency (Fr)= (Number of quadrants where species is present/ total number of quadrants)X100
Applied for (i)
Plants= 2+6+7+12+3+5+5=40
Sampled Area: (10x4m²)= 40m²
D=40/40m²=1 individuals/m²
Applied for (ii)
present in 7 quadrants
total of quadrants 10
Fr=(7/10)x100
=70%
Draw the structure of a steroid
Steroids are organic compounds associated with hormones.
An example is a cortisol.
The attached photo shows the difference between cholesterol and steroid, cortisol.
1. Describe how cellular respiration and photosynthesis are like “two sides of the same coin”?
These two processes are described as antagonists or the two sides of the same coin because they start with the molecules the other ends. In other words, to perform photosynthesis, plants need to capture CO2 plus water to, with the sunlight action, produce glucose plus O2, whilst to perform cellular respiration, they need to use O2 plus glucose, and produce CO2, plus water and ATP.
If eye color is sex-linked andR=red-eyed and r-white-eyed,which of the following indicateshomozygous recessive?A. XR XRB. XR XrC. XRYD. Xr Xr
If a trait is sex-linked, the alleles will be presented with the gamete chromosomes. In order to be homozygous recessive, it is important that only the recessive allele must appear. In this case, let's analyze each one of the options:
XR XR shows a female (XX) with both alleles being dominant (R). Therefore, it is homozygous dominant and A is incorrect.
XR Xr shows a female (XX) with one allele being dominant (R) and another allele being recessive (r). Therefore, it is heterozygous and B is incorrect.
XR Y shows a male (XY), and as Y never has a pair that's a Y, only the X will present the allele. In this case, it is a dominant allele (R). Therefore, it is homozygous dominant and C is incorrect as well.
Xr Xr shows a female (XX) with both alleles being recessive (r). Therefore, it is homozygous recessive, and that's what we're looking for.
The correct answer is D. Xr Xr
I have provided my own question for you in the picture.
Non-segregation of waste that include plastic indiscriminate disposal on landfill and so as burning in an open air can cause hazards to human health due to the toxic released by such actions. It has a great impact also on marine animals that were able to ingest such products. They die of starvation due to the mistake of ingestion of plastic as food. Since plastic is not biodegradable, it will be present in the environment for a lifetime. It produces a deliberate adverse environmental effect that cause infectious diseases, blockage of drains, and damage on biodeversity.
Early explorers in 5e United States often observed huge flocks of passenger pigeons. In the 1800s, hunters began netting and shooting the bird in huge numbers to sell as food. In 1914, passenger pigeons were declared extinct when the last one died at the Cincinnati zoo
The passenger pigeon is an extinct species of pigeon. Passenger pigeons were hunted by Native Americans. The hunting expanded after the arrival of the Europeans in the 19th century. Pigeon meat was commercialized as economical food which resulted to hunting on enormous scale for many decades.
Other factors contributing to the decline and subsequent extinction of the species includes the shinking of the large breeding populations crucial for the conservation of the species and deforestation that damage their habitat.
Answer - option A
Is is true that sex linked trait can be explained by mendelian genetics
Mendelian genetics can explain the sex-linked trait. Sex-linked traits refer to the traits controlled by genes on the sex chromosomes. A pedigree is a method used to show how a trait is passed from generation to generation within a family. It shows relationships and identifies individuals with a given trait that is related to a sex-linked trait. Punnett square can also determine the expected ratios of possible genotypes in the offspring of two parents.
Which parts of the brain are not part of the lobes
The cerebellum and the brain stem, lie at the interphase between the brain and the neck. These structures do not belong to any brain lobe.
Please help me with this question please. I have tried to help my son draw a DNA but please help me to draw a replicated molecule. I have attached what I have drawn for a DNA just to see if that can help for the other question image that there asking him to do.Write a sentence that relates your model to processes that take place inside your own cells. Your answer should include some form of the terms mitosis, nucleus, and cell division. Than draw a sketch of a replicated molecule and be sure to label all of the important parts.
DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Once the DNA in a cell is replicated, the cell can divide into two cells, each of which has an identical copy of the original DNA.
Which of the following could your family do to lower its carbon footprint?Who Is Producing Carbon Dioxide?Other 14%Electronics 6%Refrigeration 8%TransportationHeat and AirConditioning46%FactoriesWater Heating 13%BusinessesHomesLighting 13%A. Set the thermostat 2 degrees warmer in the winterOB. Take longer showersOC. Drive or ride in cars more oftenD. Set the thermostat 2 degrees warmer in the summer
Options:
A = It is recommended to set 2 degrees warmer in the winter to save energy and reduce carbon footprint.
B = Longer showers are not good for conserving water and energy consumption.
C = Driving or riding cars more often produces more carbon footprint than reduction.
D = Setting the thermostat up 2 degrees during summer is not a good option since in summer even a 2 degrees increase in temperature harms our general body functions because we will feel sluggish.
ANSWER: A
Define biogeographical evidence
Biogeography means the study of the distribution of organisms in an area. Common terms associated with biogeography are cosmopolitan (an organism found almost everywhere), disjunct (an organism with two populations found in different parts of a region), native (an organism present in a wide area), and endemic (an organism found only in a particular area). Biogeographical evidence is a type of proof of an organism's past or present occupation of a particular area. This can be in the form of fossils, manure/fecal matter, bones, etc.
What form of life was developing on Earth 4500 million years ago?A. BacteriaB. InvertebratesC. Life hadn’t formed yetD. Dinosaurs
the correct option is C. Life hadn’t formed yet
Practice #3 how is dna changed when offering is reproduced
If the offspring came from sexual reproduction, they will have the traits of both parents but mostlikely be not like either of the parent. If the offspring came from asexual reproduction, they will be genetically identical to the parent. Offspring that came from sexual reproduction contain some of the dna from the parents. They are genetically unique since they get a mix of genes from the mother and father.
Answer - Options A, C, and D.
Option B explains that asexual reproduction should be the same dna of both parents since they are considered as clone of the parents.