Prokaryotic cells are simpler than eukaryotic cells, making cell division simpler in prokaryotes than in eukaryotes. Single circular chromosomes, no nucleus, and few additional organelles are all present in prokaryotic cells.
Prokaryotic cell division happens through binary fission, whereas eukaryotic cell division occurs either through mitosis or meiosis. This is the primary distinction between prokaryotic and eukaryotic cell division. Additionally, eukaryotic cells have nuclei, whereas prokaryotic cells have not. Prokaryotes are tiny, single-celled organisms that lack the nucleus, which other cells use as an unique place to store their DNA. These organisms reproduce by means of cell division, which is the process by which one cell divides into two or more new cells.
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On the photomicrograph of bone below, identify all structures listed in the key to the left.
On the Structure of Compact Bone, the order of labelling are:
canaliculilamellacentral canallacunaWhat are these part known for?The photomicrograph shows a cross-section of a Haversian system, which is the basic unit of compact bone. The Haversian system consists of a central canal surrounded by concentric layers of bone called lamellae.
The osteocytes are located in lacunae that are arranged in rows along the Haversian canal. The canaliculi connect the lacunae to each other and to the Haversian canal. The central canal contains blood vessels and nerves that supply the osteocytes. The compact bone is arranged in columns called osteons.
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In a population of 13 Bio 1 lab students, p = 0.146, how many more students must complete their eval for the p allele to become fixed?
In a population, 12 Students must complete their eval for the p allele to become fixed.
To determine how many more students must complete their evaluation for the p allele to become fixed, we need to calculate the frequency of the p allele in the current population. We can do this using the formula:
p = number of p alleles / total number of alleles
Since we are dealing with a diploid organism, each individual has two alleles, so the total number of alleles in the population is 26 (13 students x 2 alleles per student). If p = 0.146, then the number of p alleles in the population is:
number of p alleles = p x total number of alleles
number of p alleles = 0.146 x 26
number of p alleles = 3.796
We can't have a fraction of an allele, so we round up to 4 p alleles in the population. To calculate how many more students must complete their evaluation for the p allele to become fixed, we need to consider that fixation occurs when the frequency of one allele is 1 (or 100%). Since there are only two alleles in this population (let's call the other allele q), the frequency of q is:
q = 1 - p
q = 1 - 0.146
q = 0.854
So, if the p allele is to become fixed, all individuals in the population must have the p allele. Currently, there are 4 p alleles in the population, which means there are 22 q alleles (since there are 26 total alleles). Each student has two alleles, so there are still 11 students whose allele frequencies are unknown. To calculate how many more students must have the p allele for it to become fixed, we need to calculate the number of q alleles that remain:
number of q alleles = q x total number of alleles
number of q alleles = 0.854 x 26
number of q alleles = 22.204
Again, we can't have a fraction of an allele, so we round up to 23 q alleles. This means that at least 12 students (since each student has two alleles) must have the p allele for it to become fixed, which will result in a p frequency of 1 (or 100%) and a q frequency of 0.
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Matching (1pt each) Match the structures/organisms on the right to the appropriate statement below. Use each letter once.
i. A body cavity surrounded on only one side by mesoderm:
ii. Fungal hyphae without septa
iii. Structure made entirely of endoderm tissue in bilateral animals:
iv. Structural compound that provides strength to xylem & phloem:
v. Structure where microspores are created in Angiosperms:
vi. This process happens just prior to meiosis in ‘club’ and ‘sac’ fungus:
vii. A structure used by fungus to penetrate a plant’s cell wall:
viii. Something that will sting you if touched while you swim in the ocean:
ix. A structure used by Ectoprocts during suspension feeding:
x. A lifeform that results from a mutualism between a fungus and algae:
xi. A plant that relies on flagellated sperm for reproduction:
xii. Structure containing pollen in Conifers:
A. Alimentary canal
B. Pseudocoelom
C. Coenocytic
D. Lignin
E. Appressorium
F. Karyogamy
G. Anther
H. Lichen
I. Anthozoan
J. Lophophore
K. Monilophyte
L. Male cone
Answer:
i
Explanation:
The most intense earthquakes happen at
1. Plate boundaries
2.subduction zones
3.mid - ocean ridges
4. Collision plate boundaries
Answer:
The answer is #2. Subduction Zones
If the left anterior surface of the left ventricle became ischemic there would be some degree of blockage in the
The left ventricle became ischemic if there would be some type of blockage in the ANTERIOR INTERVENTRICULAR artery. Ischemia occurs when blood flow is restricted in a given region of the body.
Cardiac ischemia is a decreased blood flow (and oxygen) that affects the heart muscle.
The anterior interventricular artery (also referred to as the left anterior descending artery) is a branch of the left coronary artery.
The left ventricular subendocardial muscle is the most prone region of the left ventricle to ischaemic damage.
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what does dimensions mean
Answer:
you want to know what the dimensions are?
the dimensions are the height (up and down) and the base length (dotted line)
Select the statements that accurately summarize why cold weather events are not considered evidence refuting climate change.
a. Weather refers to short-term conditions, while climate refers to long-term conditions.
b. There aren't enough cold weather events to be significant.
c. Cold weather events do not align with climate change ideas, so they are rejected.
d. Climate change does not mean all places change in the same way at the same time.
e. Abnormally cold weather conditions can be caused by warming at the poles.
The correct statements that accurately summarize why cold weather events are not considered evidence refuting climate change are A, D, and E.
Firstly, weather refers to short-term conditions while climate refers to long-term conditions. Therefore, a single cold weather event or even a few cannot be used to argue against the long-term trend of climate change. Secondly, climate change does not mean that all places change in the same way at the same time. This means that while some areas may experience extreme heat, others may experience cold temperatures. Lastly, abnormally cold weather conditions can actually be caused by warming at the poles. As the poles warm, the jet stream can weaken and move south, allowing colder air to move into regions that are not typically cold. Therefore, cold weather events are not a refutation of climate change, but rather a potential consequence of it. It is essential to focus on long-term trends in global temperatures and carbon dioxide levels to understand the impacts of climate change accurately.
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11 Answer:
The 1990 law that required food labels to carry basic nutrition
information is the _____ Act.
12 Answer:
Polyhydric alcohols or polyols such as glycerine, sorbitol,
mannitol, and propylene glycol are used in foods to improve _____ and
increase moisture retention.
13 Answer:
Food _____ is the altering of a food so it appears to be of a
higher quality than it is.
11.) The 1990 law that required food labels to carry basic nutrition information is the Nutrition Labeling and Education Act.
12.) Polyhydric alcohols or polyols such as glycerine, sorbitol, mannitol, and propylene glycol are used in foods to improve texture and increase moisture retention.
13.) Food processing is the altering of a food so it appears to be of a higher quality than it is.
What is food processing?Food processing is the act of changing the texture and structure of food products in order to
their taste and prolong their shelf life.
While processing foods, some additives are used to improve texture and increase moisture retention such as the Polyhydric alcohols.
Examples of Polyhydric alcohols include the following:
glycerine, sorbitol,mannitol, and propylene glycol.After processing of food, an act called the Nutrition Labeling and Education Act help consumers to make better choices and they encourage food companies to produce healthier food.
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Non-recombinant
chromosomes
1.) What do the labels above represent? (for example: capital "A" versus lower-case "a", and
the different letters "A or B or C"?
2.) The crossing-over (regional exchange of genetic information) occurs between homologous
chromosomes. WHY is it critical that only homologous chromosomes exchange information?
3. Why is it important that crossing-over takes place between the chromosomes from two
different parents? (answer on back).
The labels above represent different alleles of genes located on chromosomes. It is critical that only homologous chromosomes exchange information during crossing-over because homologous chromosomes have similar genes in the same order.
The labels above represent different alleles (versions of a gene) that are located on the chromosomes. Capital letters represent dominant alleles, while lower-case letters represent recessive alleles. Different letters represent different genes, and their locations on chromosomes are also different.
It is critical that only homologous chromosomes exchange information during crossing-over because homologous chromosomes have similar structures and genetic content, making it possible for them to align and exchange segments of DNA. If non-homologous chromosomes were to exchange information, the resulting genetic material would be unstable and could lead to genetic disorders or other problems.
It is important that crossing-over takes place between chromosomes from two different parents because it increases genetic diversity in offspring. Each parent contributes one set of chromosomes, and crossing-over allows for the exchange of genetic information between these sets, leading to new combinations of traits. This is important for the survival of a species as it enables adaptation to changing environments and increases the chances of finding new beneficial traits.
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Dominant refers to...
A. The genetic makeup of an organism
B. The trait that is expressed over another trait
C. The physical traits you can see in an organism
D. The trait that is not expressed when a dominant trait is present
Answer:
B. The trait that is expressed over another trait.
Drag the tiles to the correct boxes to complete the pairs.
Match each form of energy to its description.
gravitational potential
Motion energy refers to the energy related to an object's movement. When an object is in motion, it possesses kinetic energy, which is a form of motion energy.
How to explain the energyThe matching will be:
motion energy = energy related to an object's movement
chemical energy = stored energy related to positions of atoms within molecules
thermal energy = energy of motion of particles in a substance
nuclear energy = energy released when a nucleus splits or combines
gravitational potential energy = energy related to height
sound energy = energy generated by vibration of a string
Chemical energy is stored energy that is related to the positions of atoms within molecules. It is the energy that can be released or absorbed during a chemical reaction. When chemical bonds are formed or broken, energy is either released (exothermic reaction) or absorbed (endothermic reaction) in the process.
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Most articles pass right through the atom, this means that most of the atom is
Most articles pass right through the atom, this means that most of the atom is an empty space.
What is an atom?An atom is described as a particle that consists of a nucleus of protons and neutrons surrounded by a cloud of electrons.
Protons and neutrons make up the core nucleus of an atom, which is encircled by an electron cloud. In relation to the size of the atom as a whole, the nucleus is exceedingly small.
As a result, the electrons surrounding the nucleus are the primary target of interactions when particles or even light pass through an atom. The majority of the atom's remaining space, which includes the nucleus, is vacant.
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What is the relationship between the curve seen in the graph and the environmental health of the oceans?
An increased population will result in the improved environmental health of the oceans due to more scientists inventing better technologies.
An increased human population size means that the ocean's resources will be used more efficiently.
As the population goes up, the oceans are more likely to be used as a habitat for humans.
As the population increases, more demands are put on the ocean to support human life.
Answer:
As the population increases, more demands are put on the ocean to support human life.
Explanation:
Many countries rely on the ocean for transport and as food sources. Over fishing has continuously been a growing problem as more and more fish are required to sustain populations as well as support more gourmet markets. A higher population will also lead to higher trade rates as more materials that aren't available in one country will need to be imported from others.
HELP PLEASE Name any two of the major types of chemical substances that are broken down in chemical digestion. For each substance, name an enzyme that breaks them down and what final product is actually absorbed by the body for use or storage.
Two major types of chemical substances that are broken down in chemical digestion are carbohydrates and proteins. Carbohydrates are broken down by the enzyme amylase, which is found in saliva and the pancreas.
Proteins are broken down by a group of enzymes called proteases, which are produced by the stomach and pancreas. Proteases break down proteins into smaller peptides and individual amino acids, which can be absorbed by the body and used to build new proteins or as a source of energy. Overall, the breakdown of carbohydrates and proteins in chemical digestion is crucial for the body to obtain the nutrients it needs for energy, growth, and repair. Amylase breaks down complex carbohydrates into simpler sugars, such as glucose and fructose, which can be absorbed by the body and used for energy or stored as glycogen in the liver and muscles.
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Not all cells have a cell membrane. True False
True
Explanation:All cells have cell membranes. There are variations between cell membranes, but the same basic structure exists in all cells.
hope this help! ^^
A researcher investigates a blood disease carried by birds. She isolates an organism from the blood of an infected bird. She finds that the
organism is unicellular and has a nucleus, a cell wall, and the ability to produce spores. What kingdom does the organism belong to?
O A. bacteria
O B. sarcodina
• C.
protista
• D.
archaea
COMO PERREAR SABROSO?!
AYUDA POR FAVOR!
hi what's its the maining of that
©
3. Cells combine with similar cells to form
A big cell
Organ
Tissue
All of the above
Answer:
tissue
Explanation:
im pretty sure it is ♀️
What controls when a cell divides?
Answer:
A variety of genes are involved in the control of cell growth and division. Tight regulation of this process ensures that a dividing cell's DNA is copied properly, any errors in the DNA are repaired, and each daughter cell receives a full set of chromosomes.
Explanation: hope this helps love
Answer:
A variety of genes are involved in the control of cell growth and division. Tight regulation of this process ensures that a dividing cell's DNA is copied properly, any errors in the DNA are repaired, and each daughter cell receives a full set of chromosomes.
Explanation:
1. The definition of evolution is
a. The process of change over time in populations
b. The process of change over time in individual organisms
C. The process in which organisms share habitats
d. The process in which organisms reproduce
Answer:
B
Explanation:
Different finch species have beaks of different shapes and sizes. What is the source of these different phenotypes
how dose the number of chromosomes found in the two daughter cells compare to the number of chromosomes found in the mother cell
Explain how enzymes assist the process of absorption.
Enzymes play a crucial role in the process of absorption by breaking down large molecules of food into smaller, more easily absorbable molecules.
In the digestive system, enzymes are produced by specialized cells and secreted into various parts of the digestive tract. For example, enzymes such as amylase and lipase are secreted into the mouth and small intestine, respectively, to break down carbohydrates and fats.
Once the food molecules are broken down into their smaller components, they can be more easily absorbed through the walls of the digestive tract and into the bloodstream. Enzymes also help to facilitate the movement of these molecules across the cell membrane and into the cells of the body, where they can be used for energy or stored for later use.
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Which of these statements accurately describes polymers?
Polymers are macromolecules.
Polymers are simple molecules.
Polymers are made of metal atoms.
Polymers contain double bonds.
Answer:
The correct answer is - Polymers are macromolecules
Explanation:
Macromolecules are termed as macro and molecules mean huge atoms, for instance, proteins. It is made by the polymerization of monomers. Macromolecules are being made out of numerous atoms.
The usually utilized atoms in natural chemistry are lipids, carbohydrates, nucleic acid, and proteins, all are made of their respective monomers that are fatty acids, monosaccharides, nucleotides, and amino acids.
Thus, the correct answer is - Polymers are macromolecules
The statement that accurately describes polymers is ; ( A ) Polymers are macromolecules
Macromolecules are large molecules that are composed of several atoms which are covalently bonded to each other. polymers are composed of thousands of atoms therefore they are categorised as macromolecules.
Biopolymers are the most common of all polymers and they include proteins and carbohydrates and nucleic acids
Hence we can conclude that the statement that accurately describes polymers is Polymers are macromolecules
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Şermin yaşar gelirken ekmek al kitabı özet acilll
Answer:
Kitabın Yazarı:Şermin YaşarKitap Türü:Öykü/HikayeYayınevi:Doğan KitapçılıkYayınlandığı Yıl:2019 (19-10-2019)Sayfa Sayısı:196ISBN:9786050966534Kitap Puanı:8 / 10 | Yorum: 22
Explanation:
Which of these meals would give you most of the nutrients that you need ?
1 .Meat, milk and a piece of chocolate
2 .Bread, vegetables and fish
3 .Vegetables, fruits and water
4 .Meat, fish and bread
The normal sodium level in human blood is 135 mEqjL. If a blood test taken immediately after a meal reveals a sodium level of 150 mEqjL, what will most likely result
Answer:
Causes high blood pressure, heart disease, and stroke.
Explanation:
Increase occur in high blood pressure, heart disease and stroke due to increase in sodium level in the blood. If the meal has no sodium then there is no increase occur in the sodium level in human blood while on the other hand, if the meal has more sodium then there is high increase in sodium level in human blood which causes high blood pressure, heart disease, and stroke.
Describe the type and ratio of organisms you would expect to find in a lake in a national park. give evidence to support your answer
Answer:
Algae would be the organism in greatest proportion in a lake in a national park.
Explanation:
A lake in a national park would have algae proliferation, which would be the largest organism in that lake. This is because a lake in a national park is subjected to great incidence of sunlight and large amounts of oxygen. This would facilitate and stimulate the reproduction of algae on a large scale, causing them to develop in the substrate, stones, pebbles, and in the water itself.
______ are chemical messengers secreted by glands.
Exocrine glands, such as sweat glands, secrete fluids through ducts. _______ glands secrete hormones directly into the bloodstream.
The _______ gland plays an important role in puberty and growth.
Epinephrine, triggering the "fight or flight" response, is produced by the _______ glands, which sit on top of the kidneys.
Most glands that secrete hormones operate using feedback mechanisms. When hormone concentrations are high, the gland will produce ________ of the hormone.
Many cells produce chemicals called _______, hormone-like substances that impact inflammation and reproduction.
The gland that helps regulate growth, body temperature, and the level of calcium in the blood is called the _______.
In order to reach different organs and tissues throughout the body, endocrine glands release hormones (chemical messengers) into the bloodstream.
Endocrine glands secrete hormones directly into the bloodstream.Hormones are directly released into the bloodstream by endocrine glands.
The pituitary gland plays an important role in puberty and growth.The pituitary gland regulates a variety of essential bodily processes and functions, including metabolism, growth, sexual development, reproduction, blood pressure, and many others.
Epinephrine, triggering the "fight or flight" response, is produced by the adrenal glands, which sit on top of the kidneys.Corticosteroid hormones and epinephrine, which are produced and released by the adrenal glands, keep blood pressure stable and control metabolism.
LessWhen hormone concentrations are high, the gland will produce less of the hormone.
Many cells produce chemicals called steroids, hormone-like substances that impact inflammation and reproduction.Eicosanoids (such as prostaglandins and thromboxanes), steroids, and phytoestrogens are examples of compounds that can be categorized as hormones (e.g. estrogen and brassinosteroid)
The gland that helps regulate growth, body temperature, and the level of calcium in the blood are called the thyroid and parathyroid.The thyroid and parathyroid glands are situated behind the larynx, in the front of the neck (voice box). The metabolism of the body is significantly influenced by the thyroid. The balance of calcium in the body is controlled in part by the parathyroid glands.
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Answer:
Hormones
endocrine
pituitary
adrenal
less
prostaglandins
thyroid
Steroidal hormones enter the cell directly and interact with DNA inside the nucleus. These hormones change gene expression, affecting the RNA that is produced and the proteins that are translated in a cell. Nonsteroid hormones do not enter the cell. Instead, they bind to specific receptors on the outside of the cell membrane. This triggers molecules called secondary messengers, such as cAMP, to begin their work of relaying information in the cell, where other chemicals, messengers, and proteins are involved to create a cellular response.
Explanation:pf
Why does Illinois have more nuclear reactors than other states?
Answer:
due to contamination and facility degradation.
It is ture that Illinois leads the nation in nuclear power generation, producing almost 50 per sent of the state’s electricity and about 1/8 of the nations nuclear power generation
As well as In 2019, Illinois generated the most electricity from nuclear energy, and the state's six nuclear plants accounted for 12% of U.S. nuclear power net generation