Answer:
reproduction
Explanation:
Basically a positive feedback in the human body is bedroom reproduction. got em
you are studying a chromosome in a new animal species. the presence of what element would make you most confident that a region is facultative heterochromatin and not constitutive heterochromatin?
Option b The presence of H3K27me element would make you most confident that a region is facultative heterochromatin and not constitutive heterochromatin.
Eukaryotic genomes contain heterochromatin, which serves a variety of purposes including limiting DNA replication and repair and silencing of gene expression. Heterochromatin separates from euchromatin spatially within the nucleus and is preferentially positioned around the nucleolus and nuclear periphery. In contrast to euchromatin, which is less condensed, richer in genes, and more readily transcribed, heterochromatin is highly condensed, gene-poor, and transcriptionally silent (Huisinga et al. 2006). Differentiating euchromatin from heterochromatin are nucleosome changes. The active transcription of DNA into mRNA products occurs in the presence of euchromatin. Gene regulatory proteins and RNA polymerase complexes can attach to the DNA sequence thanks to the unfolded structure, which can then start the transcription process. The distal arms of chromosomes include euchromatin, which is present in a decondensed form. Typically, it is spread out all across the nucleus.
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what is the chance that among the three children in generation ii who have the dominant phenotype, one of them is aaaa and two of them are aaaa ? (hint: consider all possible orders of genotypes.) express your answer to two decimal places.
This question's correct answer is 0.44.
A dominant phenotype is one that manifests itself in one of two ways: the inheritance of two dominant alleles (homozygous dominant) or the inheritance of one dominant and one recessive allele (heterozygous dominant).
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which sequence represents structures organized from most complex to least complex
The correct sequence that represents structures organized from the most complex to the least complex is oak tree-leaf- guard cell- chloroplast.
A tissue is made of groups of the same kind of cells with a common structure and function. An organ is a structure that contains at least two different types of tissue functioning together. These are called level of organization .
In plants the cells have cell wall which is the more complex , hence it is considered as most complex structure .The body of a multicellular organism, such as a tree or a cat, exhibits organization at several levels that includes tissues, organs, and organ systems .
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the requirements of biosynthesis are carbon and other essential elements, as well as which of the following? choose one: a. reducing agents and energy for catabolic enzymes b. oxidizing agents and energy for catabolic enzymes c. oxidizing agents and energy for anabolic enzymes d. reducing agents and energy for anabolic enzymes
The requirements of biosynthesis are carbon and other essential elements as well as (d) "reducing agents and energy for anabolic enzymes."
The question asks for the conditions necessary for biosynthesis. Biosynthesis describes the processes that result in the production of complex polymers from simple monomers.
It indicates that anabolic reactions are being discussed. (Catabolic reactions are those that cause polymers to disintegrate into monomers.) Complex polymers are created by anabolic reactions, which are defined as those processes.
Polymer synthesis is a reduction process. For instance, carbon dioxide is converted to generate glucose during photosynthesis. It implies that reducing agents that convert monomers into polymers are necessary.
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Describe the nucleus of an atom
Answer:
The nucleus of an atom contains the atom's protons and neutrons. It is the higher concentrated region of the atom that contributes to most of its weight. It has a positive charge because the protons are positively charged and the neutron is uncharged.
hope it helps.
How could we safely capture & grow bacteria in the classroom? What precautions do we need to take so we don’t get an infection from our experiment?
Bacteria can be grow best in warm, moist and protein rich environment. The following precautions we need to take while growing of bacteria:-
use glovesuse lab coatuse safety goggleslong hair should tieafter experiment use sanitizerBacteria are small single-celled organisms. Bacteria are found nearly anywhere on earth and are vital to the planet's ecosystems. some species can stay beneath intense situations of temperature and strain. The human frame is complete of bacteria, and in reality is expected to contain more bacterial cells than human cells.
The ancestors of bacteria were unicellular microorganisms that were the primary forms of lifestyles to seem in the world, about four billion years in the past. For about three billion years, maximum organisms have been microscopic, and bacteria and archaea were the dominant forms of life.
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Listed in the Item Bank are some important labels for sections of the image below. To find out more information about labels, some have more details available when you click on them. Drag and drop each label to the corresponding area it identifies in the image.
The given image is of fermentation. Fermentation is an anaerobic chemical process that breaks down molecules like glucose.
What is fermentation?These pathways for fermentation are simply more complex versions of glycolysis. Yeast undergoes more reactions than your muscles do, which results in alcohol being produced instead of lactic acid.
Although it's a frequent process, fermentation isn't the sole way to anaerobically extract energy from fuels (in the absence of oxygen).
Anaerobic cellular respiration relies on the movement of electrons from a fuel molecule through an electron transport chain to power the production of ATP, much like aerobic cellular respiration does.
Therefore, The given image is of fermentation. Fermentation is an anaerobic chemical process that breaks down molecules like glucose.
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in giraffes, long necks (n), long legs (l), dark spots (d), and the ability to digest maize (m) are all dominant traits. what possible genotype could a long-necked, short-legged, light-spotted, maize-digesting giraffe have? nnllddmm nnllddmm nnllddmm nnllddmm
NnllddMM is the correct answer. A genotype is a classification of the type of variant found at a specific location (i.e., a locus) in the genome.
In a broad sense, the term "genotype" refers to an organism's genetic makeup; in other words, it describes an organism's entire set of genes. In a narrower sense, the term can refer to the alleles, or variant forms of a gene, that an organism carries. A genetic test is an obvious way to determine our genotype. Companies like 23andMe can do this fairly cheaply these days. To make this work, scientists must first identify the genetic difference that causes a trait.
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Please answer the blanks I have to say it out loud on a recording HELPPPP
Why does the upper cells of nail become keratinized?
Answer:
Explanation:
Keratin is a type of protein that forms the cells that make up the tissue in nails and other parts of your body. Keratin plays an important role in nail health. It protects nails from damage by making them strong and resilient.
In addition to being used to
construct exoskeletons, chitin is
found in the cell walls of
A. animals
B. plants
C. fungi
Which of the following statements is true of the food web pictured?
Answer:
the algae is a primary consumer
The process of reading a dna strand and making a complementary dna copy of that strand is called.
The process of reading a DNA strand and making a complementary DNA copy of that strand is called Replication.
What is the name of the process of copying DNA?DNA must be duplicated when a cell splits into daughter cells because it houses the genetic code for an organism. Replication is the process of copying DNA. One double-stranded DNA molecule can produce two identical DNA helices through the process of replication.
What is the initial stage of DNA replication?Step 1: Formation of Replication Forks The double-stranded molecule of DNA needs to be "unzipped" into two single strands before it can be copied. Adenine (A), thymine (T), cytosine (C), and guanine (G) are the four bases of DNA that pair up between the two strands.
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How has the introduction of the Asian Tiger Mosquito impacted human society (“Social Effects”).
Tiger mosquitoes are associated with the transmission of many human diseases, including viruses such as dengue fever West Nile fever, and Japanese encephalitis.
In Asia, this species is the vector of dengue fever and Japanese encephalitis. Laboratory studies have shown that tiger mosquitoes are efficient vectors for many viral pathogens including yellow fever West Nile virus, St. Louis encephalitis, and La Crosse encephalitis. Asian tiger mosquitoes were introduced to the United States. Tire casings are imported for remanufacturing.
Due to the movement of tire casings, this species has spread to more than 20 states since 1985. Asian tiger mosquitoes were introduced to the United States. Tire casing imported for remanufacturing. This species carrying tire casings has spread to more than 20 states since 1985. Tiger mosquitoes are important vectors in Asia. Tiger mosquitoes can transmit viruses such as dengue chikungunya and zika to humans.
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which of the following statements about the genetic code is correct? group of answer choices all codons specify more than one amino acid. the genetic code is redundant. all codons specify an amino acid. all amino acids are specified by more than one codon.
The correct answer is . all amino acids are specified by more than one codon.
What is genetic code?
The phrase "genetic code" refers to a gene's instructions to a cell on how to make a specific protein. The four nucleotide bases of DNA, adenine (A), cytosine (C), guanine (G), and thymine (T), are employed in various ways by each gene's code to form three-letter "codons" that specify which amino acid is necessary at each position within a protein.
Genetic material the history of the genetic code relates the hopes and dangers of biology and genetics throughout the 19th, 20th, and 21st centuries. For instance, Oswald Avery put an end to more than 80 years of fruitful conjecture in 1944 when he demonstrated that the genetic code—that is, DNA—was in fact the carrier of hereditary information. However, despite how crucial DNA was to the so-called heroic era of molecular biology, which covered the generation of scientific advancement following World War II, and how crucial DNA is to the ground-breaking sciences of genetics and genomics, neither genes nor DNA can determine who you are or what you will do.
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Which best describes where the scientists who have contributed to our scientific knowledge were located
The answer is
D. They were from all parts of the world
cardiorespiratory fitness is important because it multiple choice question. stretches the small muscles of the body. rests the heart and lungs while exercises are performed. allows the blood to carry oxygen and nutrients to the body. blocks the body's glands from producing hormones.
cardiorespiratory fitness is important because allows the blood to carry oxygen and nutrients to the body.
The intensity of your workout and oxygen use are measured using metabolic equivalents (METs). They gauge energy use when at rest.
Maximum oxygen uptake (VO2 max) and how it is utilised during vigorous exercise are the two factors used to gauge cardiorespiratory endurance. Increased oxygen uptake indicates that your cardiorespiratory system is operating effectively and that you are using more oxygen. VO2 tests are often performed in a lab, hospital, or clinic with the assistance of a clinician or exercise physiologist. With a certified fitness teacher, you can perform submaximal testing.
Your cardiorespiratory endurance is assessed using submaximal exercise tests. Your cardiorespiratory endurance may be enhanced with the help of these exercises. They can be performed anytime, anywhere, and don't require a lot of equipment.
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Be able to explain how water moves in the water cycle.
in using the muscle control formula, if the effect of the external force is in the same direction as the actual movement, what is the next thing to determine?
The movement's speed must be established. A step-by-step process for identifying the participating muscles and their action for any joint movement is provided by the muscle control formula that follows.
At first sight, this muscle control formula could seem a little difficult and complicated. But with some practise, you ought to be able to do it quickly. Once the technique is automatic and instinctual (after enough practise), you will be able to analyse movements without thinking about each step in the method. However, until you acquire these movement analysis instincts, using the muscle control formula is helpful. We state the issue before introducing the muscle control formula: Describe the name of the movement (or position), the plane of movement, the impact of the external force acting on the system, the type of muscle action (e.g., shortening or concentric, lengthening or eccentric, or isometric), and the muscles involved in the movement (or position), given a specific joint movement (or position).
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Which statement best reflects aerobic respiration?
a. Aerobic respiration uses oxygen and produces carbon dioxide, water, and energy.
b. Aerobic respiration does not use oxygen and produces carbon dioxide, water, and energy.
c. Aerobic respiration uses oxygen and produces carbon dioxide, ethanol, and energy.
d. Aerobic respiration does not use oxygen and produces carbon dioxide, ethanol, and energy.
Answer:
A) Aerobic respiration uses oxygen and produces carbon dioxide, water, and energy.
Explanation:
[tex]\Large \boxed{\sf A}[/tex]
The chemical process known as aerobic respiration uses oxygen to convert carbohydrates into energy.
Aerobic respiration produces carbon dioxide and water.
Compare Why is a quarter a better electric conductor than a rubber
eraser?
Answer:
a quarter is a metal while an eraser is a rubber.
Explanation:
it is simply a difference between conductor and insulators.
In an experiment, a scientist decides to study the effect of exercise on cholesterol levels in people. He studies two set of people—those who exercise every day for an hour and those who don’t exercise at all. In this case, the statement that people who exercise for an hour may have lower cholesterol levels is
. To test this statement, the scientist would measure cholesterol levels in exercisers and non-exercisers. The cholesterol levels would be
.
The statement that people who exercise for an hour may have lower cholesterol levels is a hypothesis. The cholesterol level would be the dependent variable.
What are hypotheses?In science, hypotheses are tentative statements made regarding natural phenomena. These statements are untested. They can be tested using relevant experiments.
Thus, hypotheses are usually made before relevant experiments are conducted.
Thus, in the illustration, the statement that people who exercise for an hour may have lower cholesterol levels is considered a hypothesis.
Also, in experiments, there are different types of variables:
Independent variablesDependent variablesIndependent variables are supplied by researchers and can be manipulated to produce different outcomes.
Dependent variables are a measure of the effects of the independent variables.
Thus, in the illustration, the level of exercise is the independent variable. The variable that the exercise was hypothesized to affect is the cholesterol level. Meaning that cholesterol level is the dependent variable.
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What type of photoreceptor enables pricilla to maneuver and see basic shapes in her room in the middle of the night?.
Pricilla uses Rods to move around and recognize simple shapes in her room in the middle of the night.
How do photoreceptors work?
which convert light into signals that are sent to the brain. Photoreceptors give us both color vision and night vision. The two different types of photoreceptor cells are rods and cones. Numerous eye problems may affect photoreceptor cells.
The initial stage of vision is carried out by specialized neurons known as rod and cone photoreceptors. In the back of the retina, close to the retinal pigment epithelium (RPE), which is a cell layer necessary for photoreceptor survival, are these light-sensitive cells.
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2. At which position might the Moon block part of the Sun, making a solar eclipse visible
from Earth?
(1) 7
(2) 2
(3) 9
(4) 4
Answer:
(1) 7 a
Explanation:
nonribosomal peptide antibiotics are produced by choose one: a. making chorismate from erythrose 4-phosphate. b. condensation of amino acids by modular enzymes into longer molecules. c. condensing glutamate and acetyl-coa, then adding amino groups through transamination. d. converting aspartate into a ring with pprp, then adding the ribose phosphate.
Nonribosomal peptide antibiotics are produced by condensation of amino acids by modular enzymes into longer molecules.
Explanation:
Nonribosomal peptide antibiotics are produced by condensation of amino acids by modular enzymes into longer molecules. Arginine is produced by glutamate and acetyl-CoA, then adding amino groups through transamination, then releasing fumarate. Aromatic amino acids are made by making chorismate from erythrose 4-phosphate, then modifying the product. Pyrimidines convert aspartate into a ring with PPRP, then adding the ribose phosphate.
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Why do you think we know very little about the mantle
We know very little about the mantle because-
For humans, creating a picture of the mantle is very challenging. It is difficult to send a robotic or human mission to the mantle (Earth's core) to observe and gather additional evidence in order to further our understanding of its existence because of the mantle's extreme temperature.
What is Mantle?A mantle is a layer inside a planetary body bordered below by a core and above by a crust. Typically the thickest and most massive layer of a planetary body, mantles are composed of rock or ice. Planetary bodies that have undergone differentiation by density are known to have mantles. Mantles are found on all planetary moons, all terrestrial planets (including Earth), and a number of asteroids. Silicate rock makes up the Earth's mantle, which lies between the crust and the outer core. Its 4.01 x 1024 kg mass is 67% that of the Earth. It makes up about 84% of the Earth's volume and has a thickness of 2,900 km (1,800 mi). Although it is mostly solid, in geological time it behaves like a viscous fluid.
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rank hemoglobin molecules with the described conditions from most likely to bind oxygen molecules to most likely to release oxygen molecules. (for help approaching this problem, open hint 1.)
Highly likely : 3 Bound oxygen,PO2=100mmHg ,PO2=40mmHg
Bound O2 in 1, PO2=100mmHg
Most unlikely : Bound O2 in 1,PO2=40mmHg
The four heme groups in hemoglobin include four iron atoms that act as binding sites for oxygen molecules. A Hb tetramer can thus bind four oxygen molecules. According to the molecular weight of Hb, 1.39 ml of oxygen can mix with 1 g of Hb. The actual oxygen-binding capacity of hemoglobin (CHb) is 1.34 ml O2 per gram Hb, however portion of the Hb ordinarily found in red blood cells is unable to do so (it is either metHb or HbCO). Since there are approximately 15 g of Hb in 100 ml of blood, that amount of blood may bind 20.1 ml of oxygen. The blood's ability to bind oxygen is known as this amount (CB).
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After comparing the sounds of the conga and timbales, which do you prefer and why?
After comparing the sounds of the conga and timbales, the sound that i prefer is the conga because it comes out like an open tone that tends to ring after a person must have hit it.
What is the Conga sound about?Congas have a low, pleasant tone because of their profound depth. The full hand is more frequently used to create congas. Timbales can have a depth of up to 16 inches. Timbales offer richness to songs in the Latin music heritage with their clear, booming tone.
Note that playing the congas demands a specific technique, which you may master with practice, despite the fact that it may seem like a straightforward instrument to pick up.
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through green community practices the members can propose which projects
The members can propose:
Sustainable Purchasing.Electronic Management.Transportation.pollinator protection.Waste Diversion.Pollution prevention.A good way to start is to save water drive less walking use less energy buy recycled products eat locally grown vegetables and go green to combat air pollution. These include joining organizations generating less waste and planting more trees.
You are one of twenty-four companies accredited by the United Nations to provide advisory services on climate change. The main goals of the green initiative include offsetting greenhouse gas emissions from human activities and reforestation projects in riparian areas in need of restoration. They act as catalysts for expanding social and economic opportunities and improving quality of life.
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12. The activity of all human body systems is coordinated by (1) the secretion of hormones and the nervous system (2) the interaction of nerve impulses with the excretory system (3) the movement of digested food by the circulatory system (4) the secretion of hormones and the circulatory system
Answer: 1
Explanation:
The secretion of hormones and the nervous system give information or signals to the rest of your body. believe it or not our bodies are not smart and without our hormones and nervous system our organs and systems would just stop.