What is insolation? What's an example?
Which metalloid has five valence electrons in the fourth electron shell?
antimony
germanium
selenium
arsenic
Answer:
Arsenic
Explanation:
took test on edg. :)
What does like a trees growing on that side?
Answer:
in order to answer that, you have to provide more information about your question
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Identify the correct term for each definition.
a. the bottom chamber of both sides of the heart
b. the dome-shaped muscle at the base of the chest cavity that contracts and lowers to draw oxygen into the lungs then relaxes and lowers to push carbon dioxide out
c. the liquid part of the blood
d. the protein that colors red blood cells and allows them to carry oxygen to the tissues
e. the passageway out of the body for urine
f. the top chamber of both sides of the heart
g. the tube that carries food to the stomach
h. the two branches of the windpipe that descend to the right and left lungs
i. muscles that operate completely outside of conscious thought
j. tiny blood vessels where pickup of wastes and delivery of oxygen and food takes place tiny filtering units in the kidneys
k. a waste product that is made up of leftover parts of used proteins and is high in nitrogen
l. urea and other waste substances that are collected in the bladder
Answer:
a-Ventricle
b-Diaphragm
c-Plasma
d-Hemoglobin
e-Urethra
f-Atria
g-Esophagus
h-Bronchi
i- Involuntary muscles
j-Glomerulus
k-Ammonia
l-Urine
In pea plants, purple flowers are dominant over white flowers. Two plants, both heterozygous for the gene that controls flower color, are crossed. What percentage of their offspring will have purple flowers?
a. All or 100%
b. 3/4 or 75%
c. 1/2 or 50%
d. 1/4 or 25%
e. none or 0%
Answer:
b .75%
Explanation:
If you do a genetic croas or punnet square , you will find that the genotype of the filial generation is : Pp, PP , Pp ,Pp and pp.
if purple is (P) dominant
if white is (p) recessive
the ratio of purple : white
=. 3:1
thefore 3/4 chances
1. The enzyme invertase breaks down sucrose into its two component monosaccharides. (a) The effect of pH on the initial rate of the reaction catalyzed by invertase was investigated at 25°C. (i) Suggest why the temperature was kept at 25°C. (2)
at what point in meiosis is a chromosome lost so that, after fertilization with a normal gamete, the result is an embryo with the chromosomal makeup of 45, x0?
The result is an embryo with the chromosomal makeup of 45,\(X_{0}\) is after an error occurring in anaphase I or anaphase II.
As the microtubules contract and the kinetochores pull the sister chromatids to opposing ends of the cell, then the anaphase causes the sister chromatids to separate at the centromeres. The sister chromatids are separated during anaphase of mitosis by two different methods and these methods are anaphase I and anaphase II. At the start of anaphase the chromosomes are plainly visible , and by a protein sister chromatids are linked at the centromere known as Cohesin. Chromosomes are held together by Cohesin, which can be compared to glue. Cohesin degradation always takes place in order to separate the sister chromatids. When the error occurs in anaphase I or anaphase II in meiosis then the chromosome losts , so that after fertilization with a normal gamete, the result gives an embryo with the chromosomal makeup of 45,\(X_{0}\) .
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After a mistake in either anaphase I or II, the outcome is an embryo with a chromosomal composition of 45.
The sister chromatids separate at the centromeres during anaphase when the microtubules shorten and the kinetochores pull them to the opposite ends of the cell. Anaphase I and Anaphase II are two different ways that the sister chromatids are split during the anaphase of mitosis. The chromosomes are clearly visible during the beginning of anaphase, and sister chromatids are connected at the centromere by a protein known as Cohesin. Cohesin, which is comparable to glue, holds chromosomes together. The sister chromatids are always separated by cohesin degradation. when the mistake.
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it is a fact that major life forms now on earth were not at all represented in the past. there were no birds or mammals 250 million years ago. it is a fact that major life forms of the past are no longer living. there used to be dinosaurs and pithecanthropus, and there are none now. it is a fact that all living forms came from previously living forms. therefore, all present forms of life arose from ancestral forms that were different: birds arose from nonbirds and humans from nonhumans. this passage is a/an
This passage is an example of logical deduction or inference based on observations and scientific facts.
Specifically, it argues that all present forms of life arose from ancestral forms that were different, based on the observation that major life forms on Earth have changed over time and that all living forms came from previously living forms. This argument is in line with the theory of evolution, which explains the diversity of life on Earth as a result of descent with modification from common ancestors over long periods of time.
The theory of evolution is supported by a vast body of evidence from a range of scientific fields, including genetics, paleontology, and comparative anatomy. This evidence includes the fossil record, which shows a progression of life forms over time, as well as genetic and molecular evidence that confirms the relatedness of different species.
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Why was it impossible to culture Hoof and Mouth disease?
It was impossible to culture Hoof and Mouth disease because the virus responsible for the disease is extremely fragile and sensitive to environmental conditions.
The virus cannot survive outside of a host for very long and can be easily destroyed by exposure to heat, pH changes, and many disinfectants. Therefore, it is difficult to isolate and grow the virus in laboratory settings. Additionally, working with live Hoof and Mouth virus can be dangerous and requires high-level biosafety precautions. Overall, the fragile nature of the virus and the risks associated with working with live virus make it challenging to culture and study Hoof and Mouth disease.
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What affect do enzymes have on chemical reactions?
Answer:
Increases reaction rate by lowring its activation energy.
Explanation:
i.e If the chemical reaction completes in 5 hours it means that reaction's activation energy is very high.This factor causes decrease in rate of reaction so to increase reaction rate and to decrease activation energy enzymes or catalyst are added so now reaction will be completed in half hour.This is the importance of enzymes/catalysts.Enzyme and catalyst cann't start reaction but they increase rate of reaction and decrease time to reach equillibrium.
amino acids in a protein polymer are connected by a covalent bond called a [ select ] bond that connect the [ select ] group of the first amino acid to the [ select ] group of the second amino acid. such successive amino acid bondings generate a protein polymer called a [ select ] .
The amino acids in a protein polymer are connected by a covalent bond called a peptide bond that connects the carboxyl group of the first amino acid to the amino group of the second amino acid. Such successive amino acid bondings generate a protein polymer called a polypeptide.
A peptide bond is formed through a condensation reaction between the carboxyl group of one amino acid and the amino group of another amino acid. This bond results in the formation of a covalent linkage between the carbon and nitrogen atoms of the amino acids, creating a peptide bond. The successive formation of peptide bonds between amino acids leads to the generation of a polypeptide chain, which is the primary structure of a protein.
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After studying the movement and communication of plants, what did charles darwin feel compelled to suspect
Answer:
He felt that plant movement was strongly caused by mechanical means
Explanation:
After studying the movement and communication of plants, Charles Darwin was compelled to suspect that the response to light and water could be because of botanical adaptations to natural selection.
what is the movement and communication of plants?According to the power of movement in plants, written by Charles Darwin plants respond to external stimuli. Evaluation can be the main reason behind the changes that are taking place in plants with respect to movement and communication.
This movement and communication seen in plants could be gradual, leading to a modification to the response to natural sources.Darwin observed that the cotyledons attracted to light were a typical example of phototropism.To learn more about movement and communication, refer:
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Part 2: Use the Science Seminar Evidence Cards to explain why you think the
other claim (Claim 1 or Claim 3) is not as strong.
When assessing the strength of a claim, it's essential to consider the following factors: Based on the science seminar evidence card.
Quality and reliability of evidence: Evaluate the sources of evidence supporting each claim. Consider whether the evidence comes from reputable scientific studies, peer-reviewed research articles, or well-conducted experiments. Strong claims are often supported by robust, reliable, and well-documented evidence.
Consistency of findings: Examine whether multiple studies or sources of evidence support the claim consistently. Claims that are supported by a broad range of independent studies are generally considered stronger than those with limited or conflicting evidence.
Sample size and statistical significance: Consider the sample size of studies or the amount of data supporting the claim. Larger sample sizes and statistically significant results provide more robust evidence compared to small-scale studies or results that may occur by chance.
Experimental design and methodology: Assess the experimental design and methodology used in the studies. Well-designed experiments with appropriate control groups, randomization, and appropriate statistical analysis enhance the strength of the claim.
Expert consensus: Consider the consensus among experts in the field regarding the claim. Scientific consensus, achieved through peer review and extensive research, adds credibility to a claim.
By carefully evaluating these factors, you can assess the strength of different claims and make informed judgments about their reliability.
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How can we differentiate so many different foods if we can only taste four flavors on our tongue: sweet, bitter, sour, and salty?
We can detect sweet, sour, salty, bitter, and savory tastes because of the presence of out taste buds. It has microvilli that are described to be very sensitive microscopic hairs. They are the one responsible for sending the message of taste to the brain so you will be able to know or differentiate the different taste of food. Each taste has a the presence of chamical substances that is stimulating the receptors on the taste buds. We are able to taste our food because of the sensory cells in our taste buds. We identify the flavor of our food by the odor that comes from our sense of smell because flavor includes taste and odor.
What effect does this change have on the frequency of the
light-colored genetic code in the mouse population?
The change in the environment would not affect the frequency of the light-colored genetic code in the mouse population.
Frequency of the light-colored genetic code in the mouse population would not be affected by a change in the environment. Light-colored genetic code in the mouse population is determined by genetic makeup and not the environment.
A change in the environment may change the survival rate of the population, however, it does not influence the frequency of the genetic makeup of the population. The genetic makeup of the population can change through genetic drift, mutation, and migration.
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HindIII is a restriction enzyme that cuts the DNA sequence AAGCTT between the two A bases. How many times would HindIII cut the following DNA molecule?
GTAAGCTTCGACAAGCTTGCTGA
HindIII cut the following DNA molecule 2 times.
Enzymes are proteins that act as biological catalysts with the aid of accelerating chemical reactions. The molecules upon which enzymes may also act are known as substrates, and the enzyme converts the substrates into distinct molecules known as products.
Enzymes are crucial for digestion, liver function, and much more. An excessive amount of or too little of a sure enzyme can reason fitness issues. Enzymes in our blood can also assist healthcare carriers to check for injuries and sicknesses.
Characteristics of enzymes:
* Enzymes are complicated macromolecules with high molecular weight.
* They catalyze biochemical reactions in a cell.
* Enzymes have an effect on the rate of biochemical response and not the direction.
* Enzymes are unique in movement.
* Enzymatic activity decreases with growth in temperature.
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Select the term most closely associated with the statement: Protozoans living in the intestine of a termite secrete
enzymes that digest cellulose, providing digestive end products of value to both organisms.
A
mutualism
B
commensalism
с
parasitism
D
Saprophytism
E
Competition
Answer:
A. mutualism
Explanation:
because what is secreted by the termite is beneficial for both
What is the relationship between he motion of molecules and the kinetic energy of the particles? PLS IT IS IMPORTANT!
Answer:
an increase in the temperature will increase the average kinetic energy of the molecules which causes the molecules to move faster
Which type of anterior pituitary cell secretes melanocyte stimulating hormone (msh)?
The anterior pituitary cell secretes melanocyte stimulating hormone (msh) is corticotrophic cell.
What is pituitary gland?
Pituitary gland is known as master's gland because it secretes a number of hormones that are very essential for the growth of the body. Hormones are defined as chemical substances that function as a messenger molecules in the body.
Hormones are produced in a particular part of the body and later travelled to the other parts of the body.
Testosterone is a hormone which is responsible for physical relationships and play a vital role in body. In men it plays a vital role in fat distribution, muscle mass and in the production of sperm as well as red blood cell.
Therefore, the anterior pituitary cell secretes melanocyte stimulating hormone (msh) is corticotrophic cell.
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Volcanic eruptions change the short term weather my blocking sunlight and making temperatures ________. Volcanic eruptions change the long term climate by adding greenhouse gases and making the climate _____.
Answer:
cooler/warmer
Explanation:
hope this helps!
Answer:
cooler and warmer
Explanation:
Explain why the one bone/two bone/many bones/digits limb pattern is important in explaining the origin of tetrapods.
Answer is in the file below
tinyurl.com/wpazsebu
Getting to know the number and pattern of bones in limbs is important to understand the evolution of tetrapods.
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Fossils are animal and vegetable rests found in different strata of sedimentary rocks. Sedimentary layers deposit chronologically, so they are used to reflect history. These fossils turn to be very useful while dating ages and studing evolutive processes.
Fossils provide good information about the existing relationship between ancient and modern tetrapods. Limb structures between these organisms are relatively similar. However, they can change in the number of bones and their arrangement pattern, reflecting the changes that species suffered through evolution.
The pattern in which the composing bones are arranged in limbs is useful to study tetrapods evolution, from a common aquatic ancient -fish- to modern terrestrial and aquatic tetrapods.
By looking at the number of limbs and digits, and the bones' pattern involved in these structures, scientists could interpret how evolutive processes occurred. Information about bones' density, length, and size, is also useful to understand the environmental pressures acting on the animals, and how the tetrapods managed to adapt.
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Why is the alpine tundra biome worth protecting WELL GIVE BRAINLIEST IF YOU CAN HLO ME
Struggled with this earlier but because of the high altitude only some animals can live there and thrive because of the lower oxygen levels
Which choice could be considered a limiting factor for a species?
A limiting factor for a species can be a factor that can limit the growth, distribution, or even presence of a species within a particular ecosystem.
The factor that can limit the growth of a species can be biotic or abiotic factors. Therefore, the choice that could be considered a limiting factor for a species can be any of the following biotic or abiotic factors: Competition for resources (food, water, and space) within the ecosystem. Predation and herbivory Disease or parasitism. Pollution Changes in climate, natural disasters, or seasonal changes. Availability of mates For instance, a forest may provide a suitable habitat for a species, but the availability of food sources and suitable conditions for the species to reproduce may act as limiting factors for the population of that species within that ecosystem.
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what kind of shark can survive in freezing waters and is the northern most shark?
The shark that can survive in freezing waters and is the northernmost shark is the Greenland shark. It is a slow-moving shark that can be found in the Arctic and North Atlantic oceans.
These sharks are known for their ability to withstand extreme cold temperatures, with some individuals even living in waters that are -1.3°C. The Greenland shark has a unique adaptation to freezing temperatures in its blood. Its blood contains a high concentration of urea and trimethylamine oxide, which acts as an antifreeze, preventing the shark's blood from freezing. In addition to this, the Greenland shark's body is covered in a thick layer of fat, which helps it retain heat in cold waters. Although the Greenland shark is not known to be a danger to humans, it is a top predator in its ecosystem, feeding on fish, seals, and other sharks. These sharks are also slow-growing and have a long lifespan, with some individuals living up to 400 years. Overall, the Greenland shark is a fascinating and unique species that has adapted to survive in some of the coldest waters on Earth.
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The transfer of genes between two species that does not involve inheritance is known as.
Answer:
Horizontal gene transfer
Explanation:
is the movement of genetic information between organisms, a process that includes the spread of antibiotic resistance genes among bacteria fueling pathogen evolution
It is important to wear rubber gloves or a plastic face mask when administering first aid:
to keep blood or other fluids from getting on your face or hands
to protect yourself and the victim from the spread of infectious diseases
to be modest
to not only protect yourself and the victim from the spread of infectious diseases but also keep blood or other fluids from getting on your face or hands
Answer:
it's the last one
Explanation:
since you don't want to get yourself or the other person sick or infected.
Answer:
to not only protect yourself and the victim from the spread of infectious diseases but also to keep blood or other fluids from getting on your face or hands
Explanation:
Took the test
Latoya is working in the lab to generate an EPSP, which is a _______
a. graded depolarization b. graded hyperpolarization c. reflex d. specialized hormone
Latoya is working in the lab to generate EPSP, which is a a. gradual depolarization
EPSP, or excitatory postsynaptic potential, is a type of graded depolarization. EPSP occurs when a neurotransmitter binds to receptors on the postsynaptic neuron, causing an influx of positively charged ions into the cell. This causes the membrane potential to become less negative, or more positive, which is known as depolarization.
EPSP is assessed, meaning that the magnitude of the depolarization can vary depending on the strength of the stimulus. If the EPSP is strong enough, it can cause an action potential, which is an electrical signal that travels down the axon of a neuron. Therefore, the correct answer is option A, gradual depolarization.
In contrast, graded hyperpolarization (option B) occurs when the membrane potential becomes more negative, or less positive. Reflexes (option C) are involuntary responses to stimuli, and specific hormones (option D) are chemical messengers that are produced by one part of the body and travel to another part of the body to exert their effect.
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Please help.
There is a species of frog on an island that puzzles scientists. The proportion of frogs with no stripes is greater than the proportion of frogs with stripes. This is puzzling because the unstriped trait is recessive (s), and the striped patterns are due to dominant alleles (S). Also, natural selection seems to support the striped trait.
How do genetic factors most likely account for the proportion of traits in the frog population?
A. Most of the striped frogs and unstriped frogs have the genotype ss.
B. Most of the striped frogs have the genotype SS and the unstriped frogs have the genotype ss.
C. Most of the striped frogs have the genotype SS and the unstriped frogs have the genotype Ss.
D. Most of the striped frogs have the genotype Ss and the unstriped frogs have the genotype ss.
Why are endocytosis and exocytosis important processes to cells?
Answer:
Endocytosis enables the cell to take in the bacteriaor fluid droplets from out side the cell and this is important for defense and nutrition respectively. Exocytosis is important for the cell to secrete products like hormones or enzymes to the outside so other body parts can make use of them like insulin and digestive enzymes from the pancreas.
Answer:
Explanation: Endocytosis and exocytosis are important mechanisms for bringing substances into and out of a cell. Cells use exocytosis to secrete proteins. Many of the proteins made on the rough endoplasmic reticulum and processed by the Golgi apparatus are sorted into vesicles destined for the plasma membrane.
A student is examining a whitefish blastula cell under a microscope. Based on his observations, the student proposes that the whitefish blastula cell is in interphase.
Which of the following pieces of evidence would best support the student’s claim?
A
The mitotic spindle is fully assembled, with its poles at opposite ends of the cell.
B
Sister chromatids have separated and are moving toward opposite poles of the cell.
C
The genetic content of the cell exists as dispersed chromatin.
D
A cleavage furrow has formed on the cell’s surface.
The piece of evidence that would best support the student’s claim is as follows: The genetic content of the cell exists as dispersed chromatin (option C).
What is interphase?Interphase stage of mitotic cell division is the stage in the life cycle of a cell between two successive mitotic or meiotic divisions.
It is the phase of the cell cycle in which a typical cell spends most of its life. Interphase is the phase of the cell in which the cell obtains nutrients and metabolizes them, grows, replicates its DNA in preparation for mitosis, and conducts other "normal" cell functions.
According to this question, a student is examining a whitefish blastula cell under a microscope. Based on his observations, the student proposes that the whitefish blastula cell is in interphase.
This suggests that the cell is yet to enter the first stage of mitosis, which is prophase, hence, the genetic material will still appear dispersed as chromatin.
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