A dichotomous key uses

Answers

Answer 1

Answer:

A key that helps to identify an inknown organism


Related Questions

What are the two main differences between capillaries in the periphery and capillaries surrounding the brain

Answers

Answer:

The options are not given but they are gotten from another websites.

A. Capillaries surrounding the brain have no pores and are surrounded by membranes of astrocyte cells.

B. Capillaries surrounding the brain have pores and are surrounded by membranes of astrocyte cells.

C. Capillaries surrounding the brain have no pores and are not surrounded by membranes of astrocyte cells.

D. Capillaries surrounding the brain have pores and are not surrounded by membranes of astrocyte cells.

The correct answer is option A.

Capillaries surrounding the brain have no pores and are surrounded by membranes of astrocyte cells.

Explanation:

Capillaries surrounding the brain have no pores and are surrounded by membranes of astrocyte cells because

Capillaries are tiny blood vessels in the circulatory system that connect aterioles to venules. They are the most abundant or they are much blood vessels. They can penetrate the tissues of the body which allow passage of food nutrients, oxygen in the body thereby allowing exchange of nutrients and oxygen between the body tissues and the blood.

Capillaries surrounding the brain have no pores and are surrounded by membranes of astrocyte cells while capillaries in the periphery Capillaries surrounding the brain have pores and are not surrounded by membranes of astrocyte cells.

In a food web, where should all organisms have the arrows pointing to? Multiple choice question: (Consumers, producers, decomposers)

Answers

Answer:

producers

Explanation:

producers are usually plants and veggies/ fruits. These producers don't get their energy from other organisims. They get it from sunlight and water etc. They are the end stage of the food chain.

Why does a microaerophilic organism grow only in the middle depth region of a Fluid Thioglycollate Medium tube

Answers

Answer:

A microaerophilic organism grows only in the middle depth area of a Fluid Thioglycollate Medium tube because the mid area of the tube has moderate levels of oxygen and significantly higher amounts of carbon dioxide.

Explanation:

A microaerophile organism is one that cannot survive or thrive in a region with normal levels of atmospheric oxygen. It prefers environments with a lower concentration of oxygen and higher amounts of carbon dioxide.

Fluid Thioglycollate Medium tube is used during experiments to determine which organisms are aerobes (that is can thrive well in and require oxygen to survive), from those which are anaerobes (cannot tolerate oxygen and may die in its presence) and microaerophilic organisms.

At the bottom of the Fluid Thioglycollate Medium tube, there is zero oxygen whilst at the top, there is lots of oxygen. Towards the midsection, there is less oxygen and more carbon dioxide. The Thioglycollate mixture contains the following:

Sodium thioglycollateThioglycolic acidL-cystine, Methylene blue, and 0.05% agar.

Cheers

how would scientists know if populations are increasing or decreasing over

Answers

Answer:

The statistical study of populations and how they change over time is called demography. Two important measures of a population are population size, the number of individuals, and population density, the number of individuals per unit area or volume.

Explanation:

Read each of the sentences that describe what happens either during mitosis or meiosis. Drag each sentence into the correct box.

Answers

Mitosis occur in somatic cells while meiosis occur in the germ cells to produce gametes.

MITOSIS:

Two diploid daughter cells form that are genetically identical the parent cell.Homologous chromosomes do not pair in mitosis.In mitotic cells one row of chromosomes line up at the center.The nucleus of the cell divides only once.

MEIOSIS:

Four haploid daughter cells form that are genetically different to the parent cell.Each homologous chromosome  pairs after replication.Tetrads or group of four cell form and crossing over sometimes occur.Paired homologous chromosome line up across the center of the cell.

Therefore, mitosis occur in somatic cells while meiosis occur in the germ cells.

To know more about Meiosis,

https://brainly.com/question/11622266

A two-substrate enzymatic reaction in which one product is produced before the second substrate binds to the enzyme has a

Answers

Answer:

The correct answer is - Ping pong Mechanism.

Explanation:

The ping pong mechanism of the enzyme is a non-sequential mechanism of two-substrate enzymatic reaction in which product is produced after the binding with the first substrate.

After the produced form due to the binding of the enzyme to the first substrate, it changes into a temporary form that binds with the second substrate and completes the reaction.

Thus, The correct answer is - Ping pong Mechanism.

HELP ASAP
what characteristic do protozoa display?
A . autotrophic
B . motile
C . vertebrate
D .prokaryote

Answers

B. Motile
They are capable of motion!

The Sun is a fairly normal star.
True
False

Answers

Answer:

Yes.

Explanation:

The Sun is a medium sized star

What does this process lead to?
Chiasma

Answers

Answer: Chiasmata are specialized chromatin structures that link homologous chromosomes together until anaphase I (Figs. 45.1 and 45.10). They form at sites where programmed DNA breaks generated by Spo11 undergo the full recombination pathway to generate crossovers. At a given chiasma, an exchange of genetic material can occur between both chromatids, what is called a chromosomal crossover, but this is much more frequent during meiosis than mitosis. In meiosis, absence of a chiasma generally results in improper chromosomal segregation and aneuploidy.

Hope this helps........ Stay safe and have a Merry Christmas!!!!!!!! :D

a country with different habitat is described as high degree of?..​

Answers

Answer:

Habitat diversity.

Explanation:

Biodiversity means the diversity of living organisms that make up land and water, as well as the diversity within different species, between species and ecosystems. Biodiversity is not only the overall diversity of forms and phenomena of flora and fauna but also the diversity of the function of living organisms.

How does the amount and type of fuel impact the distance a spacecraft can travel?

Answers

It feels in another ways and all that is it and stuff

A space ship's momentum will continue to carry it forward indefinitely at a constant speed after the engines are turned off.

What do you mean by momentum?

Momentum in a simple way is a quantity of motion. Here quantity is measurable because if an object is moving and has mass, then it has momentum. If an object does not move then it has no momentum.

Momentum, finance, refers to the capacity for a price trend to sustain itself going forward. Strong momentum can continue in an upward or downward trend, which can be confirmed by changes in trading volume and other technical indicators.

Momentum is how we measure mass that is in motion. Any moving object will have momentum. Under the law of physics, the object's momentum equals mass times velocity. Momentum is affected by the parameters' mass as well as velocity.

Learn more about momentum:

https://brainly.com/question/30677308

#SPJ6

Which is the most efficient way to avoid DNA mutations from UV radiation?

Answers

Answer:

Hi, I belive the correct answer your looking for is C. Avoid Uv radiation by wearing sunscreen.

Explanation:

Why?- Well the first two A,B are incorrect because X-rays cant really protect you from Uv radiation and The last one D a tanning bed are you kidding me nope definitely wrong.

Answer:

c

Explanation:

Which of the following are outputs of photosynthesis that are used as inputs for cellular respiration? [SELECT ALL THAT APPLY]

a. H20
b. CO2
c. O2
d. C6H12O6

Answers

A.H20 because I have to know

Observe an ecosystem near your home and describe the biodiversity of your chosen ecosystem. PLZZZ HELPP idc if its from a photo just Helpp mee

Answers

Answer:

A garden is a ecosystem that is near my house.  the biodiversity of garden is fresh green leaves for caterpillars, and floral resources (pollen and nectar) for pollinators.

Explanation:

Hope it helps!!!!!

Mark me brainlist plzzzzzzzzzzzzzzzzzzzzzzzzz

fill in the blanks human beings continue to grow Till the age of dash​

Answers

Answer:

Human beings continue to grow till the age of 20.

Answer:

most people don't reach full maturity until the age of 25

Chromatography is an analytical test used to closely examine which aspect of fibers? *
1 point
Cross Section
Light Absorbtion
Dye Composition
Fiber Composition

Answers

Dye composition

Hope it helped you

why was it important to convert all of the foods to a 100 gram sample??

Answers

Answer:

*deep breath* I HAVE no clue what so ever I'm so sorry XD

Explanation:

Is there a scientific discovery in today’s world that has been overshadowed by popular belief? Explain. What role do you think popular belief has on scientific discoveries?

Answers

The history of science is also a history of people resisting new discoveries that conflict with conventional wisdom.

When Galileo promoted Copernicus’ theory that the Earth revolves around the sun – counter to church doctrine about the Earth being the center of the universe – he wound up condemned by the Roman Inquisition in 1633. Charles Darwin’s theory of evolution – that new species develop as a result of natural selection on inherited traits – ran into opposition because it contradicted long-held scientific, political and religious beliefs. Alfred Wegener’s 1912 proposal that Earth’s continents move relative to each other – the theory of continental drift – was rejected for decades, in part because scientists held fast to the traditional theories they’d spent careers developing.

These kinds of examples aren’t only historical, unfortunately. We’re used to hearing about how the general public can be dense about science. You might expect some portion of everyday folks to take their time coming around on truly groundbreaking ideas that run counter to what they’ve always thought.

But scientists, too, hold their own personal beliefs – by definition, based on old ways of thinking – that may be holding back the innovation that’s at the heart of science. And that’s a problem. It’s one thing for an average Joe to resist evolving scientific theories. It’s quite another if a scientist’s preconceived notions holds us back from discovering the new and unknown – whether that’s a cure for Zika or a cutting-edge technology to combat climate change.

Personal beliefs as publication roadblocks

Real scientific progress occurs when laboratory or field research is reported to the public. With luck, the finding is accepted and put into practice, cures are developed, social policies are instituted, educational practices are improved and so on.

This usually occurs though publication of the research in scientific journals. There’s an important step between the lab and publication that laypeople may not know about – the evaluation of the research by other scientists. These other scientists are peers of the researcher, typically working in a closely related area. This middle step is commonly referred to as peer review.

In a perfect world, peer review is supposed to determine if the study is solid, based on the quality of the research. It’s meant to be an unbiased evaluation of whether the findings should be reported via journal publication. This important step prevents sloppy research from reaching the public.

However, in the real world, scientists are human beings and are often biased. They let their own beliefs influence their peer reviews. For example, numerous reports indicate that scientists rate research more favorably if the findings agree with their prior beliefs. Worst of all, these prior beliefs often have nothing to do with science but are simply the scientists’ personal views.

‘But that’s counter to what I thought…’

How is this a problem for scientific innovation? Let’s look at how some personal beliefs could prevent innovative science from reaching the public.

Minorities aren’t good at STEM.” The stereotype that “women are not good at math” is commonly held – and also happens to be incorrect. If a scientist holds this personal belief, then he is likely to judge any research done by women in STEM (Science, Technology, Engineering and Mathematics) more negatively – not because of its quality, but because of his own personal belief.

For instance, some studies have shown that female STEM applicants in academia are judged more harshly than their male counterparts. Because of this gender bias, it may take a female STEM researcher more time and effort before her work reaches the public.

Some racial minorities face similar kinds of bias. For example, one study found that black applicants are less likely to receive research funding from the U.S. National Institutes of Health than equivalently qualified whites. That’s a major roadblock to these researchers advancing their work.

However, people often believe that comic books are just low-brow entertainment for kids. If a scientist holds this personal belief, then she’s likely to judge any psychology research using comic books more negatively. Because of this, scientists like me who focus on comic books may not be able to publish in the most popular psychology journals. As a result, fewer people will ever see this research.

The history of psychology supplies one example. Behaviorism was psychology’s dominant school of thought for the first part of the 20th century, relying on observed behavior to provide insights. Its devotees rejected new techniques for studying psychology. During behaviorism’s reign, any talk of internal processes of the mind was considered taboo. One of the pioneers of the subsequent cognitive revolution, George A. Miller, said “using ‘cognitive’ was an act of defiance.” Luckily for us, he was defiant and published one of the most highly cited papers in psychology.

The scientific endeavor requires belief. There would be no science if people didn't have faith in the objectivity of other scientists' work.

What is the importance of scientific discoveries?

New techniques, new galaxies, new planets, and potentially even the existence of life on them are just a few of the previously unthinkable possibilities that science has made feasible. Further possibility lies in the future.

Scientism is a very odd word, but for reasons we will see, it is an important one. Despite being a relatively new term, it is connected to numerous other “isms” that have a long and violent history.

The moral standing of professors and mentors, the order and understanding of nature, and the compatibility of reason and truth.

Therefore, scientific discovery in today’s world that has been overshadowed by popular belief.

Learn more about scientific discovery here:

https://brainly.com/question/8088896

#SPJ2

Which product of respiration is used for tissue repair and cellular function?

carbon dioxide
water
energy
oxygen

Answers

Answer:

energy c

Explanation:

Its

Answer:

energy

Explanation:

PLEASE HELP ME ILL MARK BRAINLIEST CORRECT ANSWer thank you

Answers

Answer:

I think it might be C. .......

Explanation:

What is one way the body lowers its temperature?

Answers

Answer:

Sweating

Explanation:

Sweating is your body's way of naturally reducing body temperature. By sweating, your body releases heat then the sweat on your body cools down, eventually, cooling your body down.

Answer:

if your talking about heat, then the body starts sweating to cool its self down.

Explanation:

Help please I'll give brainlist
The environment limits population growth by changing birth and death rates. Briefly describe how each environmental factor listed below influences population size. Also, identify each environmental factor as a biotic or abiotic factor

Competitors
Disease
Food
Ph level
Prediction
Soil type
Temperature
Water availability

Answers

Answer:

Disease

Ph level

Water availability

Soil type

Explanation:

why did china remain isolated

Answers

Answer:

In the last 50 years or so of the Ming Dyansties, the emperor simply lacked the necessary resources and man power to sustain large amounts of trade, causing China to become isolated from the world.

Explanation:

An object with a mass of 30 kg is located on a cliff 50 m above the ground. What is its gravitational potential energy

a. 1500 j
b. 14,700 j
c. 1.7 j​

Answers

b. 14,700 J

Because,

Potential energy

= m.g.h

= 30 kg × 9.8m.s^-1 × 50m

= 14700 kg.m^2.s^-2

= 14700 J

This substitution score matrix called _____ is derived from protein families that are characterized by blocks of conserved amino acid sequences.

Answers

Answer:

BLOSUM

Explanation:

A substitution matrix is a matrix used in bioinformatics (and also in computational biology) to determine/estimate the rate at which one character -which is specified by a nucleotide sequence in nucleic acid alignments or by one amino acid in protein alignments-, changed to another character during the course of the evolution. The BLOcks SUbstitution Matrix (popularly known as BLOSUM) is a substitution matrix used to score one amino acid for another in a protein alignment. The BLOSUM substitution matrix is particularly useful to compare evolutionarily conserved regions between protein sequences and thus score their alignments, where each entry is indicated by a similarity score between two amino acids.

You are so Brainly right now.

Answers

Answer:

Sorry, not funny.

Answer:

don't get it

Explanation:

have a nice day!!! :)

Brainiest is appreciated

Photosynthesis and respiration depend on each other for the exchange of:

Answers

Carbon dioxide and Oxygen
carbon dioxide and oxygen hope it helped!

Match the type of water with the location in which it is found. surface water ,water vapor, atmosphere, well ,glacier ,river, groundwater ,ice. ​

Answers

Answer:

Surface water <---> river

Ground water <------> well

Water vapour <------> atmosphere

Glacier <-------> ice

Explanation:

Answer:

Plato

Explanation:

Peristaltic action ensures food is pushed through the

Answers

Answer:

Peristaltic action ensures food is pushed through the Esophagus.

hope it helps!

) What happens when a phosphate group is removed from an ATP molecule?
a. carbohydrates are stored b. water is released
c. energy is stored
d. energy is released

Answers

Answer:

D. energy is released

Explanation:

In the process of hydrolysis, a phosphate group is removed and energy is released. This then converts the ATP molecule into ADP (adenosine diphosphate).

Other Questions
What is McCartneys general message about the Chinese? I need help, because it is late A survey of Mr. Young's class shows that 1 out of 3 students are going to buy a pool pass for the summer. Based on this result, how many of the 630 students in the school are expected to buy a pool pass? Andrea earned 200 points on a school assignment. Because theassignment was turned in late, the score was reduced to 20 points.What was the percentage decrease in the score?Symbol requiere HELP MEEEEEEEEEhow many grams are in 562 dg? Evaluate 4b a when a = 12 and b=7.4b - a= 0 Does the graph show a proportional relationship between x and y? Choose the correct answer below functions of Judiciary -15 = z/-2. what does z = ? Read, look at the image, and choose the correct option.Qu comes en la escuela a las 12?________.A. La claseB. El almuerzoC. El escritorioD. La pantalla hello can anyone please help me?? Juan read 300 pages in 5 days which reading rate is equivalent. A.150 pages in 3 days. B.120 pages in 2 days. C.105 pages in 1 day D.100 pages in 3 days An object has a mass of 5 kg. What force is needed to accelerate it at 6 m/s2? (Formula: F=ma)Group of answer choicesA. 11 NB. 30 NC. 1.2 ND. ,83 N . VERY IMPORTANT PLEASE AWNSER AS SOON AS POSSABLE I WILL BE GIVING BRAINLYESTRead the excerpt below, and then select one prompt. You will choose to write either a narrative essay or an informational response paragraph.The Adventures of Tom Sawyer, excerptBy Mark TwainWhen Tom awoke in the morning, he wondered where he was. He sat up and rubbed his eyes and looked around. Then he comprehended. It was the cool gray dawn, and there was a delicious sense of repose and peace in the deep pervading calm and silence of the woods. Not a leaf stirred; not a sound obtruded [interrupted] upon great Nature's meditation. Beaded dewdrops stood upon the leaves and grasses. A white layer of ashes covered the fire, and a thin blue breath of smoke rose straight into the air. Joe and Huck still slept.Now, far away in the woods a bird called; another answered; presently the hammering of a woodpecker was heard. Gradually the cool dim gray of the morning whitened, and as gradually sounds multiplied and life manifested itself. The marvel of Nature shaking off sleep and going to work unfolded itself to the musing boy. A little green worm came crawling over a dewy leaf, lifting two-thirds of his body into the air from time to time and "sniffing around," then proceeding againfor he was measuring, Tom said; and when the worm approached him, of its own accord, he sat as still as a stone, with his hopes rising and falling, by turns, as the creature still came toward him or seemed inclined to go elsewhere; and when at last it considered a painful moment with its curved body in the air and then came decisively down upon Tom's leg and began a journey over him, his whole heart was glad .... Now a procession of ants appeared, from nowhere in particular, and went about their labors; one struggled manfully by with a dead spider five times as big as itself in its arms, and lugged it straight up a tree-trunk. A brown spotted lady-bug climbed the dizzy height of a grass blade, and Tom bent down close to it and said, "Lady-bug, lady-bug, fly away home, your house is on fire, your children's alone," and she took wing and went off to see about itwhich did not surprise the boy, for he knew of old that this insect was credulous [trusting] about conflagrations [fires], and he had practised upon its simplicity more than once. A tumblebug came next, heaving sturdily at its ball, and Tom touched the creature, to see it shut its legs against its body and pretend to be dead. The birds were fairly rioting by this time. A catbird, the Northern mocker, lit in a tree over Tom's head, and trilled out her imitations of her neighbors in a rapture of enjoyment; then a shrill jay swept down, a flash of blue flame, and stopped on a twig almost within the boy's reach, cocked his head to one side and eyed the strangers with a consuming curiosity; a gray squirrel and a big fellow of the "fox" kind came skurrying along, sitting up at intervals to inspect and chatter at the boys, for the wild things had probably never seen a human being before and scarcely knew whether to be afraid or not. All Nature was wide awake and stirring, now; long lances of sunlight pierced down through the dense foliage far and near, and a few butterflies came fluttering upon the scene.------------------------Select only one prompt. You will choose to write either a narrative essay or an informational response paragraph. Choose one of the following tasks and complete a short essay:Prompt Choice 1 (Narrative Essay)Read this sentence from the story and the prompt below. Write a well-developed narrative essay....a gray squirrel and a big fellow of the "fox" kind came skurrying along, sitting up at intervals to inspect and chatter at the boys, for the wild things had probably never seen a human being before and scarcely knew whether to be afraid or not.Have you ever come face to face with an animal-a bird, a squirrel-in the wild who was not afraid of you? Recall a time when an animal acted in a way that seemed unexpected. Write a narrative of your experience.**Be sure that your narrative has a clear beginning, middle, and end. Use your mature voice, specific details, sensory descriptions, and dialogue. Proofread your work before submitting.Prompt Choice 2 (Informational Response)Review the excerpt above. Answer the following question in a well-developed paragraph.What character traits does Tom demonstrate when he is lost in the woods?**Be sure to re-state the question in your topic sentence and use specific examples and details from the story to support your answers. Proofread your work before submitting. An hydraulic fuse relies on liquids to run, what would a fuse of c02 atoms create if the fuse stopped working Copper(I) complexes tend to be tetrahedral rather than octahedral or square planar. Why is this the case? Explain your reasoning. After food is consumed, chemical nutrients are absorbed into the blood. The blood then carries these nutrients to the body's cells where the nutrients enter mitochondria. Which reaction must occur next for the cell to carry on other activities? define the term diffusion in your own words What is the difference between active and passive use?Which type of screen time do you engage in more?What screen activities do you value and what do you want to cut out? The chemical formula for the ionic compound aluminum sulfite is Al2(SO3)3. Explain why there are 2 cations for every 3 anions in this compound.