Answer:
i believe C
Explanation:
the layers propose a volcanic eruption along with the crystals such as how an agate forms.
What further evidence do we need to diagnose Elisa?
Answer:
ELISA, using excretory-secretory antigens from infective-stage larvae, is the diagnostic test of choice. In patients whose clinical signs and history suggest visceral toxocariasis, a positive Toxocara ELISA is strong presumptive evidence of Toxocara infection. A rising or falling titer with a twofold difference in a recently ill patient is consistent with visceral toxocariasis
What differences can you see when you compare the nucleus of a dividing cell with that of a non-dividing cell?
Answer:
Explanation:
The difference you can see when you comparethe nucleus of a dividing cell with that of a nondividing cell is that chromosomeswill be seen in the nucleus of the dividing cell because they are visible when acell is dividing apposed to non-dividing cells.
55) Cells require which of the following to form cilia or flagella?
A) centrosomes
B) ribosomes
C) actin
D) A and B only
E) A, B, and C
Answer: D) A and B only
Explanation:
Centrosomes and Ribosomes are both present in the animal cell with both of them having different roles. Centrosomes have roles in cell divisions as they maintain chromosome number during the process and Ribosomes are in charge of the synthetization of proteins.
These two share a role together which is that they are both needed by the cell in order to form either cilia or flagella.
it is only found in the plant cells that support the plant which is also made of specialized sugar called cellulose
Which of the following are the alleles for a heterozygous pea plant?
A. Gg- Green color
B. GG- Green color
C. gg- yellow color
Heterozygous means the individual has one copy of the recessive gene and one for the dominant gene. That means the genotype will contain one capital letter and one lowercase letter. In this case, which is complete dominance the dominant gene will manifest in the heterozygous form.
The correct answer is A. Gg-Green color
Which characteristic of a population is calculated by the number of organisms divided by the area they occupy?
A.
age structure
B.
density
C.
distribution
D.
genetic diversity
Answer:
B density
Explanation:
Answer:
its B
Explanation:
S. cerevisiae occurs in nature on ripe fruit. S. epidermidis naturally occurs on human skin. How do experimental results relate to the natural environment of each microbe?
Answer:
S. cerevisiae needs natural environment present on ripe fruit while S. epidermidis needs natural environment present on human skin.
Explanation:
S. cerevisiae occurs in nature on ripe fruit because the environment is suitable for them that provides food in the form of sugar while S. epidermidis naturally occurs on human skin because it needs wet and humid environment which is available on human body such as armpits. Due to the presence of suitable environmental condition, both S. cerevisiae and S. epidermidis are present on fruits and human skin respectively.
What is the relationship between light intensity and gas production?
Answer:
As light intensity increases (distance between lamp and plant decreases) the volume of oxygen (or the rate of bubble production) increases. This indicates that the rate of photosynthesis increases with light intensity. However, at sufficiently high levels of light intensity, the rate oxygen evolution remains constant.
please help
What is the cell cycle?
1.process of duplication of genetic material
2.repeating process of DNAsynthesis
3.the time a cell spends actively dividing
4.repeating series of stages a dividing cell goes through
Answer:
A cell cycle is a series of events that takes place in a cell as it grows and divides.
how many kilometers will the pacific plate travel in 1 million years
Answer:
201km in 1.8 million year( also mark me as brailiest)
If the frequency of the disorder in the population is 0.0070, what is the percentage of heterozygous carriers
Answer:
15.322 %
Explanation:
Supposing that this is a recessive disorder and the population is in Hardy-Weinberg equilibrium:
p² + 2pq + q² = 1, where
1- the genotypic frequency of the homo-zygous dominant allele is p²,
2- the genotypic frequency homo-zygous recessive allele is q², and
3- the genotypic frequency heterozygous allele is 2pq
Therefore:
q² = 0.007 >> q = √ 0.007 = 0,0836
p = 1 - q = 1 - 0,0836 = 0.9164
2pq = 2 x 0.9164 x 0,0836 = 0.15322 (or 15.322 %)
The variety of organisms within an ecosystem is characteristic of which type of diversity? Genetic diversity b. Ecosystem diversity C. Species diversity d. Regional diversity.
Answer: c.Species diversity
Explanation: 2020 edge and the other persons is wrong!
Answer: c.Species diversity
Explanation: 2020 edge and the other persons is wrong!
If other beavers move to this area to build a dam, what is one need for which they are most likely competing?
Answer:
space adequate for building a shelter
Explanation:
edge 2021
Which statement compares how the euglena and volvox obtain food?
Both the Euglena and Volvox use an oral groove to obtain food, Brigid Ha. B. Both the euglena and volvox use chloroplasts to obtain food through photosynthesis.
this is what i looked up an got
Are fibrous proteins heavier than globular proteins in terms of molecular weight? Why?
Answer:
Proteins range in molecular weight from 1000 to more than 1 million daltons (Da), but the folded size of a globular protein is not necessary correlated to its molecular weight. Proteins composed of about 250 amino acids or less often have a simple, compact globular shape. Larger globular proteins are usually made up of two or more recognizable and distinct structures, termed domains or modules. These are compact, folded protein structures that are usually stable by themselves in aqueous solution. Typical domain structures consist of hydrophobic cores with hydrophilic surfaces. Individual domains often possess unique functional behaviors and often perform unique functions within the larger protein in which they are found.
Individuals of the same species that live in the same species that live in the same area_________
A-Ecosystem
B-organism
C-Ecology
D-species
E-abiotic
F-Biotic
G-community
H-population
Individuals of the same species that live in the same area is a population
structural adaptations of phloem
Answer:
strong
Explanation:
Answer:
The cells that make up the phloem are adapted to their function. Each sieve tube has a perforated end so its cytoplasm connects one cell to the next Companion cells. transport of substances in the phloem requires energy. One or more companion cells attached to each sieve tube provide this energy.
Explanation:
In what era did the humans appear
Image result for In what era did the humans appear
Hominins first appear by around 6 million years ago, in the Miocene epoch, which ended about 5.3 million years ago. Our evolutionary path takes us through the Pliocene , the Pleistocene , and finally into the Holocene, starting about 12,000 years ago.
What is the purpose of having leak and gated channels for the neuron?
Answer:
Explanation:
The purpose of having leak and gated channels for the neuron is that the leak channels will allow the movement of sodium and potassium across the cell membrane downward from high concentration gradient to low concentration gradient. With the leakage of ions across the cell membrane, there is maintainence of a stable resting potential of cells.
What is the difference between a primary and secondary reinforcer?
Answer:
Primary reinforcer is innate, secondary reinforcer is a stimulus
Explanation:
While a primary reinforcer is innate, a secondary reinforcer is a stimulus that becomes reinforcing after being paired with a primary reinforcer, such as praise, treats, or money.
Hope this helps!
Brain-List?
Michaelis and Menten studied the enzyme sucrase, which uses sucrose as a substrate. Assume that lactose is a competitive inhibitor of sucrase. This could be demonstrated by appropriate kinetic experiments. Think about the kind of data that would be collected in these experiments.On the axes below, show appropriate double-reciprocal plots that would demonstrate that lactose is a competitive inhibitor. Label the axes, and any intercepts with X and Y axes appropriately.The graph can be used to determine whether or Vmax has changed in the presence of lactose. State what it about the graph that allows this, and whether Vmax has changed in the presence of lactose.
Solution :
In the context, Menten and Michaelis were doing a research. They are studying about the enzyme sucrase that can use sucrose like a substrate.
The intercept on the y-axis gives the value of the Vmax.
As the intercept is same for both the plots, Vmax does not change upon the competitive inhibitor of sucrase.
The graph plotted is provided below.
How can traits affect fitness and how
can natural selection change the
presence of certain alleles over time?
Answer: Natural selection allows the survival of organisms with beneficial traits.
Explanation:
Natural selection can be defined as the differential survival and reproduction of the members of the population that have beneficial phenotypic traits to survive in unfavorable environment. These organisms reproduce and pass on their traits to the next generation such species does not extinct in future.
The natural selection allows evolution of species with the adaptation of new traits so as to allow the survival of the organism.
When comparing proteins and polysaccharides, the following similarities
can be identified:
Both consist of linked monomers via the process of dehydration reactions
Both consist of linked monomers via the process of hydrolysis.
Both consist of linked sugars via the process of dehydration synthesis.
O O
Both consist of linked amino acids via the process of hydrolysis.
Answer:
The comparison of proteins and polysaccharides establishes that they have similarity in both consist of linked monomers via the process dehydration reactions.
Explanation:
Both proteins and polysaccharides are polymers whose structure consists of the union of monomers. In the case of proteins the monomer is the amino acid, while in the polysaccharides can be glucose molecules.
The process of polymer formation is called polymerization, and one of the reactions that this process allows is polycondensation, where a water molecule is lost in the union of monomers.
The loss of water in a chemical reaction involves dehydration, a characteristic shared by the processes of adding monomers to proteins and polysaccharides.
The other options are not correct, because
Hydrolysis produces the rupture of molecules, with the intervention of water.Only polysaccharides are sugars bound by the dehydration synthesis process.Only proteins consist of amino acids linked through the process of hydrolysis.The four types of macromolecules in cells are nucleic_________
lipids, proteins, and_____
The four types of macromolecules in cells are nucleic acids, lipids, proteins, and carbohydrates.
1. Which of the students' observations will be most helpful in classifying a cell as either prokaryotic or eukaryotic? O Shape of the cell. O Presence of a nucleus. Presence of organelles. Visible DNA.
Answer:
B) presence of a nucleus
Presence of a nucleus will be most helpful in classifying a cell as either prokaryotic or eukaryotic. So, the correct option is B.
What are Prokaryotes and Eukaryotes?Prokaryotes are defined as those organisms which possess cells that lack membrane bound organelles. These are usually single cell organisms. Some examples of prokaryotes include bacteria, archaea, and cyanobacteria (blue-green algae).
Eukaryote are defined as those organisms which possess membrane bound organelles. These contain a central nucleus which is surrounded (bound) by a membrane called nuclear envelope. Some examples of eukaryotes include animals, plants, fungi, and protists.
Thus, the presence of a nucleus will be most helpful in classifying a cell as either prokaryotic or eukaryotic. So, the correct option is B.
Learn more about Eukaryotic cells, here:
https://brainly.com/question/17353812
#SPJ6
Damage to which structure will most directly disrupt water balance within a single-celled organism? A characteristic common to both diffusion and active transport is that
Answer:
cell membrane
___ is the process of producing cellular energy in the presence of oxygen.
Group of answer choices
aerobic
anaerobic
glycolysis
fermentation
Answer:
A aerobic is the answer
Explanation:
I took the test
In fruit flies, curved wings are recessive to straight wings, and ebony body is recessive to gray body. A cross was made between true-breeding flies with curved wings and gray bodies to flies with true-breeding straight wings and ebony bodies. The F1 offspring were then mated to flies with curved wings and ebony bodies to produce an F2 generation.
1. Diagram the genotypes of this cross, starting with the parental generation and ending with the F2 generation.
2. What are the predicted phenotypic ratios of this F2 generation?
3. Suppose the following data were obtained for this F2 generation:
114 curved wings, ebony body
105 curved wings, gray body
111 straight wings, gray body
114 straight wings, ebony body
Conduct a chi-square analysis to determine if the experimental data are consistent with the expected outcome based on Mendel's laws.
Answer:
Population of F2 generation will be formed on 9:3:3:1 ratio.
Explanation:
The predicted phenotypic ratios of F2 generation is 9:3:3:1. Ratio 9 represents straight wings, gray body which are dominant allele, ratio 3 represents hybrid flies having curved wings, gray body, ratio 3 represents hybrid flies having curved wings, ebony body and ratio 1 indicates flies with curved wings, ebony body. The population of F2 generation will be formed on the above ratio.
The study of genes is called genetics.
The correct answer is Population of the F2 generation will be formed on the 9:3:3:1 ratio.
What is a dihybrid cross?When more than two characters are crossed to form a new breed is called a dihybrid cross.
The predicted phenotypic ratio of F2 generation is 9:3:3:1. Ratio 9 represents straight wings, gray bodies which are dominant allele, ratio 3 represents hybrid flies having curved wings, gray body, ratio 3 represents hybrid flies having curved wings, ebony body and ratio 1 indicates flies with curved wings, ebony body. The population of the F2 generation will be formed on the above ratio.
Hence, the correct answer to the question is mentioned above.
For more information about the genes, refer to the link:-
https://brainly.com/question/14688752
Sodium (Na) and water (H20) undergo a chemical reaction
that produces sodium hydroxide (NaOH) and hydrogen gas
(H2).
Which equation represents this chemical reaction?
A. 2Na + 2H20 - 2NaOH + H2
B. 2Na+ H2 - 2NaOH + 2H20
C. 2Na + 2NaOH - 2H20 + H2
D. H2 + 2H20 - 2Na + 2NaOH
Answer:
2Na + 2H2O - 2NaOH + H2
Explanation:
WATER MOLECULE WILL BREAK INTO H AND OH
OH COMBINES WITH NA AND FORMS NAOH AND GIVES H2
What do you expect the DNA sequences of the three frogs to look like?
Answer:
Explanation: