Answer:
Fluorescein is a presumptive blood test for latent bloodstain detection. It has been used in forensic applications to reveal trace amounts of blood. Traces of latent blood can be detected even after repeated cleansing of the crime scene.
Explanation:
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What characteristics do you think could be used to classify different kinds of single-celled organisms? Write your ideas here
Answer: flagellum, a plasma membrane and organelles.
Explanation: In that sense, it can be difficult to find traits that they all share. Still, Project Oceanography at the University of San Francisco indicates that single-celled organisms have a number of common characteristics, including the presence of flagellum, a plasma membrane and organelles.
Flagellum, a plasma membrane and organelles classify different kinds of single celled organism and prokaryotic organism.
What are the different features of prokaryotic cell ?Prokaryotic cell are single celled organism, do not have membrane bound organelles and its size varies from 0.2 μm – 2.0 μm.
Here the Cell wall is present but True Nucleus is absent, the cell wall is mainly involve in photosynthesis and provide protection to cell, the ribosomes are Smaller in size having 70s type and spherical in shape.
Circular DNA is present as genetic material in prokaryotes, Mitochondria is absent in prokaryotes, the reproduction usually occur by binary fission and some times it occurs through conjugation.
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An aquifer that allows groundwater recharge is known as?
A)
unconfined aquifer
B)
confined aquifer
C)
saturated aquifer
D)
unsaturated aquifer
Answer:
b. unconfined aquifer
Explanation:
edge 2021
What group is the first species to arrive in ecological succession?
A. Intermediate
B. Pioneer
C. Climax
Answer:
B. Pioneer
Explanation:
The first species to arrive are fast-growing “weedy species,” such as lichens or small annual plants, which create the first layers of soil as they decompose.
Answer:
B. Pioneer
Explanation:
The pioneer group is the first species to arrive in ecological succession. Hence, option (B) is the correct answer.
Which of the following is NOT a way that fungi
reproduce?
A. asexually through spores dropping and growing
B. a piece of the hyphae breaks off, lands, and starts growing
C. the spores travel by wind to a different mushroom that gets
fertilized and sprouts a new mushroom
D. the hyphae of a plus and minus fungi come together and the
nuclei fuse and start to grow together
An organism is identified as having the characteristics of the genus "canis" while it's species is determined to be "lupus". Which answer choice would properly demonstrate the organism's scientific name using binomial nomenclature? A. canis lupus
B. Canis Lupus
C. Lupus canis
D. Canis lupus
E. lupus canis
Answer:
Explanation:
b I’m pretty sure
Answer:
The answer is D.
Explanation:
The Genus is capitalized whereas the species is not.
What is magma made of???
Answer:
Water vapor, Carbon dioxide, and sulfur
Explanation:
Hope that helps
Answer:
Magma made of Water vapor, carbon dioxide, and sulfur.
Explanation:
Like solid rock, Magma is a mixture of minerals. The high temperatures and pressure under Earth's crust keep magma in its fluid state.
What else should a grower do to make sure that the plants are photosynthesising at the optimum rate ?
Answer:
7 thats answer
Explanation:
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Cystic fibrosis is one of the most common genetic diseases in America. It is estimated
that 1 in 23 Americans are carriers for Cystic Fibrosis. Cystic Fibrosis is a recessive trait
that follows Mendel's Law of Dominance.
Answer ALL parts of the free response below - be sure to use vocabulary and explain your
response in detail:
A. Explain what Mendel's Law of Dominance means
B. Explain how 2 parents who do NOT have Cystic Fibrosis could have a child with cystic
fibrosis.
Answer:
a.When an organism is heterogeneous for a trait, it expresses only the dominant allele
b. A child will be born with CF only if they inherit one CF gene from each parent. A person who has only one CF gene is called a CF carrier. They are healthy and don't have the disease. But they are a carrier of the disease.
Explanation:
a.In other words, the dominant trait always masks the recessive trait.
b.A parent can be a CF carrier, and pass the CF gene on to their child.
What is the relationship between atmospheric pressure and the density of gas particles in an area of decreasing pressure? O As air pressure in an area decreases, the density of the gas particles in that area decreases. O As air pressure in an area decreases, the density of the gas particles in that area increases. O As air pressure in an area decreases, the density of the gas particles in that area remains constant. O As air pressure in an area decreases, the density of the gas particles in that area increases and decreases in an alternating pattern.
Answer:
As air pressure decreases so does density of gas particles
Explanation:
4. Compared with the walls of arteries, the walls of veins
a. are thicker.
c. lack valves.
b. are thinner.
d. have more resistance.
5. The organs of the respiratory system include the trachea, the bronchi, the diaphragm, and the ___________________________.
Cancer is caused by __________ in genes that regulate the cell cycle. These mistakes in DNA, cause the checkpoint __________ to not function properly. As a result the cells will spend more time dividing, which is called _____________ rather than in interphase.
Explanation:
cancer cause due to uncontrolled divisions of the cell because of gene mutations or presence of oncogenes which destroy or destabilise the checkpoints that prevent or controll cell division
14. The elements in group_
are the most reactive metals.
15. The elements in group_
are the most reactive nonmetals.
16. The elements in group_
are very unreactive.
17. The elements in group_
react very violently with water.
Answer:
14 Hydrogen is a very reactive gas, and the alkali metals are even more reactive. In fact, they are the most reactive metals and, along with the elements in group 17, are the most reactive of all elements.
15 The halogen group of elements is the most reactive of the nonmetals. It is also the most reactive group of all chemical elements. Fluorine is the most reactive element in this group. Halogens are highly reactive because they are all electronegative.
16 Group 8A — The Noble or Inert Gases. Group 8A (or VIIIA) of the periodic table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The name comes from the fact that these elements are virtually unreactive towards other elements or compounds.
17 Group 1: Alkali Metals
Group 1 elements are called alkali metals because of their ability to displace H2(g) from water and create a basic solution. Alkali metals are also known to react violently and explosively with water.
Need help with this question, thanks :)
Answer:
A. White dwarf
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For many years, scientists thought that the universe was static—that it had always existed and been the same, and it was neither expanding nor contracting. Then, in the late 1920s, Edwin Hubble recognized that the shift in light from distant objects toward the red end of the spectrum meant that those objects were moving away from Earth. The best explanation for these observations was that the universe was not static but was expanding. More recent observations, such as cosmic background radiation, are also better explained by an expanding universe rather than a static universe. What aspect of scientific methodology best explains the replacement of the static universe theory with the expanding universe theory?
A Science and its methods are always improving. Scientists needed newer, more sensitive instruments to detect the slow expansion of the universe.
B Hubble’s observations were extremely popular with the public, leading to overwhelming support for the new theory.
C The new theory explained Hubble’s observations, and it was tested and supported by additional observations. The theory was accepted because it was the most powerful explanation available for many observations.
D The natural progression of science is that all theories are eventually replaced by new theories until one is established as law
Answer:
C
Explanation:
B has nothing to do with the scientific method. The public does not determine a scientific law. Facts do.
D may be sort of true, but it does not explain Hubble's process. Nor does it explain what Hubble actually did and how he reported it. D is incorrect.
A was never implied (although it is likely true. On the other hand, many great scientific principles are uncovered with very simple apparatus.) A might be 1/2 true.
I think the best answer is C. It is general enough to be accepted. There are two theories mentioned. So C is the best answer.
Ernest was looking at the following diagram of a cell. Which statement best explains how he should classify the cell?
A. He should classify the cell as a plant cell because it has a cell membrane.
B. He should classify the cell as an animal cell because it has a flagellum.
C. He should classify the cell as a plant cell because it has cytoplasm.
D. He should not classify the cell as either a plant cell or an animal cell.
Answer:
C
Explanation:
I believe it is C because it looks like it has chloroplasts in it
2.
The stomata relate to by
allowing oxygen to enter the plant
Answer:
Stomata have two main functions, namely;
They allow for gas exchange acting as an entryway for carbon dioxide (CO2) and releasing the Oxygen (O2) that we breath. The other main function is regulating water movement through transpiration.Explanation:
After an outbreak of an illness, scientists use epidemiology to try to find *
A. the origin of a disease.
B. how the disease spreads.
C. how to prevent the disease from spreading.
D. all of the above
Answer:
D. all of the above
Explanation:
CAN Someone PLS answer my question!!!!!
Explanation:
I think the answer is E(big eyeball), because big eyeball is dominant over small oneWhich statement concerning the climax stage of an ecological succession is correct?
A) It is the first community to inhabit an area.
B) It consists entirely of plants.
C) It persists until the environment changes.
D) It changes rapidly.
Answer:
C) It persists until the environment changes.
Explanation:
Hope this helps
A student created a table to compare animal adaptations. Based on the table, which
animal has a behavioral adaptation, and how does it give the animal an advantage?
Animal Adaptation
Duck Webbed feet
Squirrel Collects and stores food
The duck, because the behavioral adaptation allows it to catch prey.
The duck, because the behavioral adaptation helps it survive the environment.
The squirrel, because the behavioral adaptation provides food during winter.
The squirrel, because the behavioral adaptation to have more offspring.
Answer:
B
Explanation:
Ducks have the webbed feet so, they could swim in the water so they don't drown. That is animal adaptation to the environment.
Based on the given table, the animal with a behavioral adaptation is the squirrel, which collects and stores food. This adaptation gives the squirrel an advantage by helping it survive during times when food is scarce, such as during the winter months, which is in the third option.
What is behavioral adaptation?The behavioral adaptation of collecting and storing food is an important survival strategy for many animals, including squirrels. During times of abundance, such as the fall months, squirrels will collect and store food, such as nuts and seeds, in order to have a food source during times of scarcity, such as the winter months. This allows the squirrel to survive and avoid starvation during times when food is less readily available.
Hence, Based on the given table, the animal with a behavioral adaptation is the squirrel, which collects and stores food. This adaptation gives the squirrel an advantage by helping it survive during times when food is scarce, such as during the winter months, which is in the third option.
Learn more about the behavioral adaptation here.
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please help me on this and no link's please
Answer:
A would be the best answer.
Explanation:
A seems to be the answer that matches data shown on the graph.
A hurricane hits a coastal prairie and destroys the habitat. Years later, there is an appearance of small plants with rapidly spreading roots. This is an example of- *
Answer:
Secondary succession
Explanation:
Answer:
microhabitat
Explanation:
Years later there is an appearance of small plants with rapidly spreading roots on newly formed coastal sand dunes. This vegetation describes— A a microhabitat
can someone help me with this immediately!!!! pls don’t guess or leave links!! correct answer gets brainiest
Answer:
Bones produce blood cells. So, if there are no bones in our body, then our body cannot make blood. So the answer is B.
What front is being forecast for this state?
Asap i need help pls
Answer:
The right answer is C
Explanation:
Answer:
C
Explanation:
Because in ecosystem 1, the animals that eat insects have more sources of food than just insects, so that ecosystem would surive if the insects were to decline since the animals dont depend on JUST insects to surive
Archaebacteria and eubacteria are classified into different kingdoms, but at one time they were both classified in the Kingdom Monera. Which statement best describes why the classification of these organisms was changed?
A. The kingdom became too large and had to be made into two smaller kingdoms.
B. New biochemical data showed different evolutionary relationships within the kingdom
C. The archeabacteria and eubacteria habitats were too different to be classified in the same kingdom.
D. Chromosomal analyses indicated a new genetic combination had arisen within a certain organisms in the kingdom.
Answer:
I think the option C is correct
The statement best describes the classification of these organisms was changed is the archeabacteria and eubacteria habitats were too different to be classified in the same kingdom.
What are the characteristics of Archaebacteria?Archaea is a domain of single-celled organisms. These microorganisms lack cell nuclei and are therefore prokaryotes. Archaea were initially classified as bacteria, receiving the name archaebacteria.
Archaeal cells have unique properties separating them from the other two domains, Bacteria and Eukaryota. Archaea are further divided into multiple recognized phyla. Classification is difficult because most have not been isolated in a laboratory and have been detected only by their gene sequences.
The common characteristics of Archaebacteria known to date are these: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls, with in many cases, replacement by a largely proteinaceous coat.
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When resistant bacteria multiply, what do they pass on to the next generation?
Answer:
Antibiotic use promotes development of antibiotic-resistant bacteria. Every time a person takes antibiotics, sensitive bacteria are killed, but resistant germs may be left to grow and multiply. Repeated and improper uses of antibiotics are primary causes of the increase in drug-resistant bacteria.
The resistant bacteria can reproduce rapidly because their competition (the non-resistant bacteria) has been destroyed by the antibiotic. When the resistant bacteria reproduce, they produce genetically-identical copies. These copies will all be resistant to the antibiotics.
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I think ik the answer but i'm not sure it that's the answer.
Answer: A or D
Explanation: