Answer:
cellulose is the type of carbohydrates polymer used for the structural support in crll wall within plants
Where are chromosomes located during metaphase?
The mitotic spindle pulls the chromosomes together at the metaphase plate. Microtubules from opposite spindle poles grab the two sister chromatids of each chromosome. In metaphase, the spindle has collected all the chromosomes and lined them up at the middle of the cell, ready to divide.
What are chromosomes?Chromosomes are the greatest level of DNA and protein organization. Chromosomes' primary job is to transport DNA and genetic information from parents to offspring. During cell division, chromosomes play a vital role. They keep DNA from becoming twisted or damaged.
The metaphase plate is a plane or region that is about equidistant from a dividing cell's two poles.
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A test liquid has a density of 1.1 g/mL. When you pour some of it into a cup of
water, what will happen (assuming that their natures are such that they don't
mix and that there is no chemical reaction between the two substances)?
a. The test liquid will float on top of the water in the cup.
b. The test liquid will sink to the bottom of the cup.
POUP
C. The test liquid will form a band in the middle of the cup.
d. The test liquid will coat the sides of the cup, leaving the water in the
center.
When some test liquid of density 1.1g/mL is poured into a cup of water, the test liquid will sink to the bottom of the cup, which is option B.
What is density?Density refers to the measure of the mass of matter contained by a unit volume.
An object sinks in water if its density is greater than that of water while the object will float on water if it has a lesser density than water.
According to this question, a test liquid has a density of 1.1 g/mL and is poured into a cup of water. This suggests that the liquid will sink to the bottom of the water because it has a higher density.
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Four students use the centimeter ruler shown to measure an object during an investigation. Each student aligns the edge of the object with the left edge of the ruler as shown above. All four students read the ruler with a measurement of 4.6 cm. Which statement describes the data they collect? The data have high precision but poor accuracy because of a systematic error. The data have high precision but poor accuracy because of a random error. The data have poor precision and poor accuracy because of a systematic error. The data have poor precision and poor accuracy because of a random error.
The data have high precision but poor accuracy because of a systematic error. Thus, the correct option is A.
What is systematic error?An error that is not caused by chance, but rather by a system-wide inaccuracy (in terms of observation or measurement).
The accuracy of a value refers to how close it is to its genuine value. An arrow's proximity to the bull's-eye center is an example. A measurement's precision refers to how repeatable it is. A systematic error has occurred.
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The first step of the scientific method usually involves _______.
Multiple Choice
a. gathering data
b. developing a hypothesis
c. identifying relationships between variables
d. making observations
Answer:
b. developing a hypothesis
The first step of the scientific method usually involves making observations. Therefore option D is correct.
Observations are systematic and objective observations of the natural world. Scientists use their senses or specialized tools to collect data and gather information about a particular phenomenon or problem.
These observations serve as the foundation for scientific inquiry and help researchers identify patterns, trends, or potential relationships between variables.
From these initial observations, scientists can then move on to formulating a hypothesis (b), which is a testable explanation or prediction based on existing knowledge and observations.
The scientific method guides researchers in a structured approach to understanding the natural world and conducting experiments to test their ideas.
Therefore option D is correct.
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Scale insects can be serious pests for citrus fruits. Severe infestations of scales result in falling twigs and branches until the affected tree dies. In the early 1900s, California citrus growers sprayed their trees with cyanide gas to kill scale insects. By 1914, some scale insects were surviving the spraying, and eventually the whole population showed resistance to cyanide. Which of the following statements best explains how resistance to cyanide spread in the scale insect population?
A. Insects with a resistance gene survived the first cyanide sprayings and passed the gene to their offspring.
B. Parasites infecting the insect population carried the trait from insects with a resistance gene to insects without a resistance gene.
C. Predators put greater selection pressure on insects with a resistance gene than on insects without a resistance gene.
D. Insects without a resistance gene underwent mutation upon contact with the cyanide to acquire resistance.
Individuals exposed to a damaging factor might mutate and resist the nosive effects. D) Insects without a resistance gene underwent mutation upon contact with the cyanide to acquire resistance.
What is resistance?The term resistance refers to an inheritable change in the population sensitivity, reflected through the exposure of individuals to damaging factors (insecticides, for instance) that affects the population.
A genetic modification -mutation- might occur in some of the exposed individuals, leading them to survive under the effects of these factors.
Mutated individuals spread this new character in the population, which evolves with the capability of tolerating the element that would normally affect it.
In the exposed example, some of the exposed individuals developed a mutation after the cyanide exposure and got to survive. These individuals could mate and reproduce, transmitting this new resistant character to the following generations.
The correct option is D. Insects without a resistance gene underwent mutation upon contact with the cyanide to acquire resistance
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Explain why scientists might use models to represent Earth’s process
Answer:
Scientists use models to investigate objects or processes that happen too slowly, too quickly, or on too small of a scale to observe directly.
They also use models to explore phenomena that are too vast, too complex, or too dangerous to study firsthand.
Read the excerpt from Jane Eyre by Charlotte Brontë.
from fan
My head still ached and bled with the blow and fall I
had received: no one had reproved John for wantonly
striking me; and because I had turned against him to
avert farther irrational violence, I was loaded with
general opprobrium [harsh criticism].
"Unjust!-unjust!" said my reason, forced by the
agonising stimulus into precocious though transitory
power.
What is revealed about Jane by the juxtaposition of
Jane's feelings with those of the rest of her household?
O She is upset when she is criticized.
O She is not affected by the way others treat her.
She has a strong sense of what is right.
O
O She has trouble seeing things from another point of
view.
It is revealed about Jane by the juxtaposition of Jane's feelings with those of the rest of her household She is upset when she is criticized. Thus, option "A" is correct.
How does the author compare with her heroine Jane Eyre?The author Charlotte Brontë was able to reflect on her own life and circumstances in the character of Jane Eyre. One of the most important ones is that both women were orphans, as Charlotte lost her mother at five.
Afterwards, she lived in a boarding school that made her unhappy. Both characters were also left to care for others (Charlotte for her father and Jane for Mr Rochester) and they both worked as governesses. Moreover, both women were intelligent, educated, resourceful and ahead of their times. This is an example of how authors sometimes include details of their personal lives in their works.
Thus, option "A" is correct.
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Answer is (A.)
Explanation: just took quiz on edge 2023.
Do you think the field of
human embryology could
contribute to future medical
advancements?
1. How is energy released from most fossil fuels? a) By burning it. b) By storing into the water. c) By crushing it. d) By steaming it. e) All of the above
Which of these best describes a hormone?
A. A chain of amino acids secreted by a gland
B. A neurotransmitter with a specific target
C. A neurotransmitter carried in the blood
D. A chemical message secreted by a gland
Answer:
option D
A chemical message secreted by a gland.
Explaination: A hormone is a chemical that is made by specialist cells, usually within an endocrine gland, and it is released into the bloodstream to send a message to another part of the body. It is often referred to as a 'chemical messenger'.
Which choice best summarizes the outcome of Redi‘s experiment?
Francesco Redi performed his experiment against the theory of spontaneous generation. In his experiment, he takes one glass jar and a piece of flesh and analyzes them in three different situations.
Why did Francesco Redi perform his glass jar experiment?Francesco Redi performed his glass jar experiment in order to illustrate the evidence against the theory of spontaneous generation.
He demonstrate that dead maggots or flies would not generate new flies when positioned on rotting flesh in a sealed jar, whereas live maggots or flies would have the capability to grow some eggs of maggots.
This experiment discredited both the presence of some essential components in once-living organisms and the requirement of fresh air to induce living life.
The complete question is as follows:
Which choice best summarizes the outcome of Redi‘s experiment?
Evidence for the theory of spontaneous generation. Evidence against the theory of spontaneous generation. Evidence for the theory of special creation. Evidence for the theory of the origin of life.Therefore, the correct option is B, i.e. Evidence against the theory of spontaneous generation.
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Why is it advantageous for a cell to be small
Biology
1 a What substances must a plant take in, in order to carry
on photosynthesis?
b Where does it get each of these substances from?
Answer:
a .carbon dioxide(Co2) and water (H2O)
b. air and soil
Explanation:
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.
Why does the Department of Homeland Security target foot-and-mouth disease?
The bottom- and- mouth complaint contagion has been honored since at least the 16th century.
It's characterized by fever, pocks on the bases and mouth, loss of appetite, drooling and lameness. Infected herds of creatures are generally destroyed.Large quantities of the contagion are present in all body concealment, including breath, and are readily transmitted to other creatures. The contagion can also survive on the ground for extended ages of time and can be transferred on tires, thrills and clothes. It has indeed been shown to be carried long distances by wind.The United States has been free of the complaint since 1929, but that isn't a guarantee it'll not return. Britain was free of the complaint for 34 times before a 2001 outbreak that needed the destruction of 10 million cows.FMD contagion is largely contagious in cloven- mashed creatures, including cattle, gormandizers, small ruminants. Encyclopedically, FMD has a significant impact on beast trade economics and expansive nonsupervisory programs live in the U.S. to grease identification of, response to, and control of the complaint. With one in nine Americans employed in the husbandry or confederated diligence, the goods of an FMD outbreak in the U.S. would be ruinous – estimated at nearly$ 200 billion in lost profit over 10 times across affected diligence.
Therefore the Department of Homeland Security target foot-and-mouth disease.
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a population is composed of individuals of ___
Answer:
A) the same species that live in a particular area
Which of these is not a process that can cause speciation?
A. Seasonal migration
B. Asexual reproduction
C. Mate selection
D. Genetic damage
Answer:
Asexual reproduction
Explanation:
Answer:
es la b
Explanation:
reproducción asexual
Question 14 of 25
Scientists are most likely to change a scientific theory if:
A. members of society do not agree with the theory.
B. the theory cannot be tested through direct observation.
C. new evidence does not support the theory.
D. a hypothesis used to test the theory is not supported.
Answer:
B. The theory cannot be tested through direct observation.
Explanation:
The planets that reside in the inner region of the solar system are called touristinal planets these planets share certain characteristics for example they are they all have a blank structure which would allow people to stand on the surface these planets include Mercury Earth blank and Mars on the four inner planets only Mars and blank have confirmed
satellites
Because their surfaces are rocky, the inner four planets closest to the sun Mercury, Venus, Earth, and Mars are often referred to as "terrestrial planets."
What are the characteristics of these planets?The four innermost planets are known as terrestrial planets because they have features such as a liquid heavy-metal core, at least one moon, and valleys, volcanoes, and craters.
Because these are all Earth-like characteristics, Earth is classified as a terrestrial planet.
These planets share certain characteristics, for example, they are they all have a rocky structure which would allow people to stand on the surface
Thus, these are some characteristics of terrestrial planets.
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Answer:
A
Explanation:
What described step three of a muscle contraction
Answer:
D. Actin and myosin are completely overlapped.
Question 4 of 10
How do bacteria develop resistance to drugs?
10 Points
A. After a certain amount of the bacteria are killed by drugs, they learn to recognize and avoid it.
B. Their ability to replicate very fast and natural mutations combine to allow them to evolve rapidly.
OC. If they only absorb a small amount, it works like a vaccine, immunizing them against larger amounts.
OD. If you do not take all of your antibiotics, they slowly develop a tolerance for it, like you would against certain toxins over time.
Reset Selection
Answer:
A is your correct answer.
Answer:
A
Explanation:
b) Review the results of your table and summarize your observations about
how the different substances cross membranes. (2 points)
Substances can enter and exit the cell through the membrane through passive or active transport. The processes of endocytosis and exocytosis ensure, respectively, the entry and exit of macromolecules and other particles.
In which two ways do substances cross the membrane?The selective passage of substances across the membrane occurs in two different ways:
active transport, when it involves the use of energy.passive transport, when it does not involve the use of ATP.With this information, we can conclude that substances can enter and exit the cell through the membrane through passive or active transport. The processes of endocytosis and exocytosis ensure, respectively, the entry and exit of macromolecules and other particles.
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boron& molybdenum are essential nutrients classified as: a) cofactors,b) antioxidants,c) major minerals,d) trace minerals
Answer:
d) trace minerals
Explanation:
Boron (B) and molybdenum (Mo), two of the seven essential micronutrients, also known as trace elements, are required for the normal growth of most plants.
researchgatenet
Boron and molybdenum are essential nutrients classified as trace minerals. Therefore, option D is correct.
What are essential nutrients in plants?An important nutrient is one that the plants cannot produce on their own or cannot produce in sufficient levels for basic activities, hence it must be obtained from the environment in order for the plant to function normally.
Essential elements are classified into two categories on the basis of the requirements of the plant and those are macro nutrients and micro nutrients. Macro minerals contain oxygen, nitrogen, sulfur, hydrogen, magnesium, manganese, and carbon. Microminerals contain boron, molybdenum, and zinc.
Thus, boron and molybdenum are essential nutrients classified as trace minerals. Therefore, option D is correct.
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Explain the process of Protein Synthesis
Answer:
Explanation:
Protein synthesis is the process in 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. It includes three steps: initiation, elongation, and termination.
Hope I helped
David a cma obtains mr. Washington’s vital signs after he has escorted him to examination room. David notes mr Washington’s vital signs as follows we 235 lbs t 97.6 p 94 bpm rapid and bounding bp 148/92. What can you ascertain from these findings?
We may conclude that Mr. Washington has hypertension based on the BP measurements he provided.
In light of this, we can respond to the questions presented above as follows:
Blood pressure, abbreviated as BP, is regarded as normal when it registers readings less than 140/90 mmHg. Mr. Washington's blood pressure reading of 148/92 mmHg indicates that he is hypertensive, that is, that his blood pressure is higher than normal.Because they are more sensitive to sodium and can store this element in the body more powerfully than white individuals, African Americans like Mr. Washington are more likely to acquire hypertension.Exercise, more water consumption, a sodium-free diet, and other lifestyle changes should all be suggested by the doctor to Mr. Washington to assist him manage his blood pressure.
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How are genes and proteins related?
A. Proteins are used to build genes.
O B. Genes contain the code to make proteins.
• C. Proteins are made of parts of genes.
D. Genes and proteins are both made of DNA.
B) Genes contain the code to make proteins. Hope it helps!
Answer:
the answer to the question is A) proteins are used to make genes
¿What are Vertebrates?
[tex]{\huge \underline{{ \fbox \color{red}{A}}{\fbox \color{green}{n}}{\fbox \color{purple}{s}}{\fbox \color{brown}{w}}{\fbox \color{yellow}{e}}{\fbox \color{gray}{r } }}}[/tex]
They are further classified into: fish, amphibians, birds, reptiles and mammals.
I hope I've helped : )
How did Galileo increase public support for Copernicus model
Which of these has not been used as an RNA probe?
a. Fluorescence probes
b. Radioactive probes
c. Non- radioactive
d. Cellular probes
Answer:
I think the answer is Cellular Probes.
Explanation:
I hope this helps! Correct me if I am wrong.
name the organelles which are abundant in pancreas
Answer:
endoplasmic reticulum
The lock-and-key mechanism refers to
O the complementary shapes of an enzyme and a substrate.
O the attractive forces between an enzyme and a substrate.
© the ability of an enzyme to lower the activation energy of a reaction.
O the ability of an enzyme to
*unlock" the products of a reaction.
Answer:
I think the answer is A. the complementary shapes of an enzyme and a substrate.
Explanation:
I hope this helps! Correct me if I am wrong.
