Answer:
but is it rlly
Explanation:
the corn plant on the left has been grown with Lepidoptera sp. larvae, insects that feed on the corn’s cob and leaves. The corn plant on the right was not exposed to insects. Does this experiment provide enough information to conclude that the plant on the right is resistant to Lepidoptera, and why?
Answer: C) No, we cannot conclude whether or not the corn plant on the right is resistant because, it has not been exposed to Lepidoptera.
Explanation:
Which characteristic of viruses prevents them from being used as evidence to support cell theory?
O Viruses do not have nuclei.
O Viruses cannot move by themselves.
O Viruses replicate only inside host cells.
O Viruses can have glycoproteins on their surfaces.
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Answer:
Viruses replicate only inside host cells.
Explanation:
Viruses are not used as evidence to support the cell theory because they are not considered a cell and cannot carry out vital life processes without getting into host cells.
According to the cell theory, the cell is the basic unit of life, all living organisms are made up of cells and cells arose from preexisting cells. A virus that is not in a host cell is just a piece of DNA/RNA surrounded by a protein coat and is not capable of carrying out any life process for it to be considered living.
Viruses are only able to reproduce and multiply when they get access to a living host. They use the genetic mechanisms of the host to replicate their DNA/RNA using the lytic or lysogenic cycle. Hence, they are not used to support the cell theory.
Which statement best explains why this occurred?
Megalodon left an awful lot of teeth behind, but don't worry. It is likely that it had plenty of extras. Like modern sharks, Megalodon had several rows of teeth. Scientists believe that Megalodon had six rows of 7-inch-wide, razor-sharp teeth, top and bottom, for a total of 276 teeth in its giant jaws! It's no wonder, then, that this ancient shark left so many of them behind. Without this trail of teeth, we would not know that these enormous creatures swam the ancient oceans as a top predator.Select two sentences from below that best show that the author wants the reader to be able to relate Megalodon's size to everyday life
A.What would you expect a creature whose name means “big tooth” to look like?
B.The Megalodon shark deserves this title.
C.As the Greek roots mega- (“big”) and don (“tooth”) suggest, this awesome prehistoric creature certainly did have huge teeth—as well as a massive and powerful body.
D.Scientists estimate that these gigantic sharks stretched as long as 60 feet.
E.If you're having trouble imagining that, just think of a school bus, typically about 45 feet in length.
F.Now, imagine a shark just a bit larger than that school bus—with 7-inch teeth.
G.Yes, this ancient fish certainly earned the prefix mega!
H.Since these sharks are extinct, how do we know exactly how huge and powerful the Megalodon shark was?
The answer is D and F. I did the test
Which elements are metals? Check all that apply.
Answer:
rhenium (Re), lithium (Li) , mercury (Hg)
Explanation:
hopes this helps u :)
If the paramecium is then placed in a hypertonic environment, which of the following will occur?
Answer:
To maintain homeostasis, the paramecium must pump out large amounts of water using its contractile vacuole. If the paramecium is then placed in a hypertonic environment, which of the following will occur? A Water will diffuse into the paramecium.
Explanation:
The correct sequence for the general adaptation syndrome is:_________
a) Exhaustion phase, alarm phase and resistance phase
b) Alarm phase, resistance phase and exhaustion phase
c) Resistance phase, exhaustion phase and alarm phase
d) Alarm phase, exhaustion phase and resistance phase
Answer:
The correct sequence for the general adaptation syndrome is: b) Alarm phase, resistance phase and exhaustion phase
Explanation:
The general adaptation syndrome describes what happens to our body when it is under stress.
The first phase is the Alarm phase. In this stage, the body activates the fight or flight response, causing an increase in adrenaline and cortisol, blood pressure, respiratory frequency, amongst other things that prepare us to react in a situation that we perceive as dangerous.
The second phase is the resistance one. During this phase, the body undergoes a different process that adapts it to manage the stress, with an elevated amount of cortisol and blood pressure.
The third phase is the exhaustion phase. If the stress levels continue to be high, the body passes to this stage. The body is exhausted and cannot keep dealing with stress, which causes mental and physical problems such as anxiety, depression, fatigue, stress-related illnesses, among other symptoms.
Agrobacterium, a tumor-producing bacterium that infects plants, has been of recent interest because of its possible use as a vector for genetically engineering plants.
A. True
B. False
Answer:
A. True
Explanation:
A tumor producing bacteria named Agrobacterium tumefaciens is very much in use in the field of biotechnology recently. The bacteria consists of a tumor producing gene that is incorporated in the plasmid called as 'Ti plasmid' or the tumor causing plasmid. The gene of the interest is incorporated in the plasmid and the plants is infected by it. In this way the plant receives the gene interest.
This agrobacterium can be used as a vector in the genetically engineered plants.
Hence the answer is true.
which will cause an increase in runoff and infiltration in an area
Answer:
More slopes on the ground, opened areas or potholes/sinkholes
Explanation:
What is the role of digestion?
Answer: Digestion is important for breaking down food into nutrients, which the body uses for energy, growth, and cell repair. Food and drink must be changed into smaller molecules of nutrients before the blood absorbs them and carries them to cells throughout the body.
Explanation:
Three billion years ago plants began the process of photosynthesis. Why would
the appearance of plants that use photosynthesis to produce their food affect the
increase in atmospheric oxygen and the decrease in carbon dioxide?
Answer:
because plants take in carbon dioxide and produce and release oxygen
Answer:
The appearance of plants and their color would affect the atmospheric oxygen and would attract more of this chemical. The decrease in carbon dioxide would cause the plant to change in shape.
Explanation:
It depends on the type of the plant.
The difference between PCR and real-time PCR is thatA. real-time PCR can measure the amount of DNA amplified as the reaction proceeds, while standard PCR cannot.B. real-time PCR can amplify DNA a billion-fold within just a few hours, while standard PCR cannot.C. real-time PCR can determine the DNA sequence, while standard PCR cannot.D. real-time PCR uses DNA polymerase, while standard PCR does not.
Answer:
The correct answer is A. real-time PCR can measure the amount of DNA amplified as the reaction proceeds, while standard PCR cannot.
Explanation:
PCR (Polymerase Chain Reaction) is a molecular biology technique. Conventional PCR and real-time PCR are diferent types of PCR, and are both used to exponentially amplify DNA molecules. In both types, a polimerase enzyme is employed to sinthesize DNA copies. The main difference is that conventional PCR is qualitative whereas real-time PCR is quantitative. So, real-time PCR permits not only to detect and amplify DNA but also permits to perform a quantification of the target DNA. This is accomplished by measuring a fluorescence signal - which is directly the amount of DNA amplified- during the course of the reaction.
Under which condition is the speed of cellular chemical reactions within a cell most likely to decrease?
Answer:
The products of the reaction decreases
Explanation:
When the product are formed in a chemical reaction it leads to decrease in chemical reaction rate in a cell.
What Factors Affect the Speed of Chemical Reactions?Some chemical reactions are fast and some are slow due to presence of different factors.
The collision between the reactants specially at the reactive site of the molecule will be needed to complete the chemical reaction.
So larger the size of reactant slower be the reaction or even no reaction occur due to less collision.
The more surface area of the particle lead to more collision and faster the reaction.
More Concentration of chemical reactants lead to faster the reaction rate. Higher the pressure of the reactant lead to faster the reaction rate.
Increasing in temperature can also lead the molecules move faster, average kinetic energy of the molecule can also increases.
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Which activity causes the least amount of wetland and estuary degradation when it occurs near the coast?
A. dune grass rehabilitation
B. hydrologic alterations
C. agricultural development
D. urbanization and land development
Answer:
The activity which causes the least amount of wetland and estuary degradation when it occurs near the coast is:
A. dune grass rehabilitation
Explanation:
This is actually a rehabilitation effort, unlike the other three options that cause land degradation. A dune grass rehabilitation accretes sand and minimizes the rates of beach erosion. The program tries to protect coastal infrastructure and upland properties from storm damage by planting vegetation, fencing off sensitive areas, blocking storm surge, creating dune walkways, and absorbing wave energy. During dune grass rehabilitation, activities that adversely affect the dunes are avoided.
Which kinds of pathogens caused most of the pandemics of the past
Answer:
bacteria pathogens caused most of the pandemics
if the recessive allele for cystic fibrosis is represented as c
cc- recessive has the disorder
Explanation:be my friend on brainly
Define Law of Superposition
Answer:
law of superposition
Explanation:
law of superposition a major Principle of strattigphy string that within a sequence of layer of sedimentary rockthe oldest layer is ar the base and the layer are younger with ascending order in sequence
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Even though mitosis and meiosis produce cells for different purposes, there are similarities
between the two processes. Which statement most accurately states how the two types of cell
division are alike?
Sister chromatids separate during anaphase II and mitotic anaphase is the statement most accurately states how the two types of cell division are alike. Hence, option D is correct.
What is Sister chromatids?Each chromosome is made up of two full-length DNA molecules joined at the centromere after DNA replication as part of cell division. They are two distinct DNA molecules known as sister chromatids.
Sister chromatids are two identical copies of the same chromosome that are produced by DNA replication and joined by a structure known as the centromere. They are divided during cell division, with one copy of each chromosome going to each daughter cell.
A chromatid is one of the two identical halves of a chromosome that has undergone replication ahead of cell division. The two "sister" chromatids are connected at the centromere, a constricted region of the chromosome.
Thus, option D is correct.
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The options are missing-
The daughter cells produced by both processes are haploid.
Homologous chromosomes cross over during the first prophase stage in both processes.
DNA replicates before mitotic prophase and prophase II.
Sister chromatids separate during anaphase II and mitotic anaphase.
Control and Data
a tentative, testable scientific explanation
useful for determining the effect of the independent variable
Answer:
cacacacacacacacacacacacacacacaca
Answer:
kkdm
Explanation:
kmlnui
Choose THREE examples that correctly predict the effect of a change on the ecosystem.
А
A decrease in the kangaroo rat population will cause a decrease in the coyote
population
B
A decrease in the desert tortoise population will cause a decrease in the
rattlesnake population
Wc
A decrease in the rattlesnake population will cause an increase in the kangaroo
Answer:
The answer is option A "A decrease in the kangaroo rat population will cause a decrease in the coyote population"
Explanation:
Climate is a significant ecological impact on environments. Changing Climate influences biological systems in an variety of ways. For example, warming may constrain species to relocate to higher scopes or higher rises where temperatures are more helpful for their endurance.
Environmental change not just influences biological systems and species straightforwardly, it likewise communicates with other human stressors, for example, advancement. Although a few stressors cause just minor effects when acting alone, their combined effect may prompt emotional natural changes. For example, environmental change may worsen the pressure that land improvement puts on delicate water front zones. Also, as of late logged forested zones may get defenseless against disintegration if environmental change prompts increments in substantial down pour storms.
What is the energy input to the radiometer system? What form(s) of energy are present in the system as a result?
Answer:
What happens to the work done on a system? Energy is transferred into the system, but in what form? Does it remain in the system or move on? The answers depend on the situation. For example, if the lawn mower in Figure 1a is pushed just hard enough to keep it going at a constant speed, then energy put into the mower by the person is removed continuously by friction, and eventually leaves the system in the form of heat transfer.
Explanation:
because my mom told me
Explain how asexual reproduction works. what organisms undergo asexual reproduction?
Answer:
Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction, either from a single cell or from a multicellular organism, inherit the genes of their single parent.
Answer:
Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction, either from from a single cell or from a multicellular organism, inherit the genes of their single parent.
(it what it says on web.)
Explanation:
Which animal is the house cat closest to
Answer:
The closest relatives of domestic cats are the African and European wild cats, and the Chinese desert cat.
Which is considered a chemical mutagen?
Answer:
The chemicals which help in imposing heritable changes in the genotype of an organism are termed as "Chemical Mutagens". "Hydroxylamine" (NH₂OH) and "Nitrous acid" (HNO₂) are chemical mutagens.
Explanation:
Which amino acid has a hydrophobic side chain?
Answer:
glycine, alanine, valine, leucone, isoleucine, proline, phenylalanine, methionine, and trytophan are all amino acids with hydrophobic side chains.
small fish find shelter amongst the branching coral.
How does this make the reef a hearty food web?
Answer:
uhmmm going out on a limb probably because they can get trapped in the coral
Which of the following biomes would not have plants with waxy leaves?
a)desert
b)chaparral
c)savanna
d)grasslands
Answer:grassland
explain: 1. try your best lu guys
2.try to look up all this biomed
3.see which one doe shot have waxy leaves
4.done
what is Electron Transport?
Answer:The electron transport chain is a series of complexes that transfer electrons from electron donors to electron acceptors via redox reactions, and couples this electron transfer with the transfer of protons across a membrane. The electron transport chain is built up of peptides, enzymes, and other molecules
Explanation:give brianlest
Answer:
Medical definitions for electron transport
The successive passage of electrons from one cytochrome or flavoprotein to another by a series of oxidation-reduction reactions during the aerobic production of ATP, with the electrons originating from an oxidizable substrate and passing to molecular oxygen.
Please answer will give brainliest.
(PLEASE HELP I WILL GIVE YOU 27 POINTS) Figure out how to make the diver sink.Figure out how to make the diver float again.Record your methods for changing the location of the diver in the space below.
this is for my science class please help me
Answer:
I have no idea
Explanation: