Answer:
A compound is a pure substance of two or more elements chemically combined elements combine during a chemical change a particle of a compound is called a molecule.
Explanation:
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Answer:
A compound is a pure substance of two or more elements chemically combined elements combine during a chemical change a particle of a compound is called a molecule.
Explanation:
I have no clue I just know it
What effect dose changing the number of electrons, protons and neutrons have on an atom?
Answer:
Change the number of neutrons in an atom and it becomes an isotope, change the number of electrons, it becomes an ion. When you change the number of protons in an atom, you will change the atom from one element to a different element. Sometimes, when you add a proton to an element, the element will become radioactive.
Hope this helps!
Which statements about the Milky Way are true? Choose more than one answer.
It is constantly moving
Stars and planets make up most of its mass
It contains very little dust and gas
It contains millions of stars
It has a spiral shape
It has an undefined shape
Answer B, D, E
Explanation:
2 ____ are equal to one whole
Answer:
2 halves are equal to one whole
1/2 + 1/2 = 1
For each different higher-pitched sound we hear, hair cells bend the most at different locations on the basilar membrane in the cochlea. This statement describes the ____
Answer:
Place theory
Explanation:
- ability to detect high pitch/ high frequency sound waves, registered within specific places of the cochlea
Describe the components and structure of a DNA nucleotide
Answer:
Nucleotide
A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T). In RNA, the base uracil (U) takes the place of thymine.
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10. Name some factors that determine a person's healthy weight.
What is the first procoagulant that the extrinsic and intrinsic pathways have in common?.
Answer:
Prothrombin is activated to thrombin.Factor X is the first procoagulant that the extrinsic and intrinsic pathways of the blood clotting system have in common. Thus, option D is correct.
What is the blood clotting pathway?Blood clotting is the process to stop the flow of blood from the injury. There are two pathways the extrinsic and the intrinsic that have Factor X as the common procoagulant.
Factor X or the Stuart factor is synthesized in the liver and interacts with the other procoagulant in the blood clotting pathway to form a clot and stop bleeding.
Therefore, Factor X is the common procoagulant in the intrinsic and extrinsic pathways of blood clotting.
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The complete question is attached to the image below.
The ultimate source of energy for most organisms is.
The type of endocytosis that involves formation of vacuoles following engulfment of whole cells or large particles is called
The type of endocytosis that involves engulfment of whole cells or large particles is called phagocytosis. It is important in the immune system.
What is endocytosis?Endocytosis is a cellular process by which cells take materials from their surrounding environment.
Endocytosis can be divided into pinocytosis and phagocytosis. By pinocytosis, a cell can take fluids with dissolved molecules.
Phagocytosis refers to the cellular process where a cell internalizes larger molecules or even cells (e.g., damaged cells).
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What does a small size of a cell allow for
Answer:surface area to volume ratio
Cell size is limited by a cell's surface area to volume ratio. A smaller cell is more effective and transporting materials, including waste products, than a larger cell. Cells come in many different shapes. A cell's function is determined, in part, by its shape
Explanation:
Suppose a herd of dairy cows is given an excess of antibiotics, which enter their stomachs. What biological process will the cows now have difficulty performing
Excess antibiotics will hinder the digestion of grasses in dairy cows.
Digestion in cowsCows are able to digest grasses through a symbiotic association with some cellulose-digesting bacteria in their stomach.
Without these bacteria, the digestion of cellulose (the main component of grasses) would become impossible.
Excessive usage of antibiotics by cows may end up killing some of the symbiotic bacteria, thus making the digestion of grasses difficult.
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During their mating season, male song sparrows sing to attract female song sparrows. A healthy male song sparrow is able to learn songs from other male song sparrows, and then produce a more complex song. Female song sparrows are attracted to more complex songs.
Why is the difference in song complexity important during mating season?
A.
The healthy males will teach the females the complex songs so they can attract males.
B.
The females will mate with healthier males, so they can produce stronger offspring.
C.
The females will know to stay away from the song sparrows with complex songs.
Answer:
A
Explanation:
Because Female song sparrows aren't just attracted to the song and rhe sparrow but also the ability they had to learn how to sing those complex songs.
Summarize the relationship between proteins and genes.
When using punnett squares to determine the patterns of inheritance of an organism, the phenotype of an individual is determined by his or her Question 2 options: genotype. Mother's allele only. Father's allele only. Incomplete dominance.
Answer:
wheres the punnett square
Explanation:
What rarely reacts with metals? acids , bases or both?
Answer:
bases
Explanation:
Bases don’t occasionally react with metals.
I hope It helps! Have a great day!
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Bases rarely react with metals.
Do bases react with most metals?
Some metal reacts with a base to form salts and hydrogen gas. Most metals do not react with bases but zinc metal does because it is amphoteric. That is, it reacts with acids as well as bases. When sodium hydroxide solution is heated with zinc, then sodium zincate and hydrogen gas are formed.
Which metals do not react with bases?Metals form salts by transforming themselves into cations and combining with the anions present in the acids. Hence, not all metals react with bases, only amphoteric metals like zinc and aluminium react with bases.
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Which if the following mutations would change the amino acid sequence of a protein?
Which of the following is not a potential consequence of Earth reaching its global capacity? Degradation of land Scarcity of resources More spread of disease Fewer mass extinctions.
Fewer mass extinction is not a potential consequence of Earth reaching its global capacity. Thus, the correct option for this question is D.
What is mass extinction?Mass extinction may be characterized as a type of event in which a large number of species vanish at a much faster rate than they are replaced in the natural ecosystem. This event is ultimately responsible for the reduction in the biodiversity present on the surface of the Earth.
An event of mass extinction is thought to take place when multiple Earth systems are thrown off kilter and when these changes happen rapidly more quickly than organisms evolve and ecological connections adjust innately.
Processes like the degradation of land, scarcity of resources, more spread of disease, and large or huge mass extinction are some of the potential consequences of Earth reaching its global capacity.
Therefore, less mass extinction is not a potential consequence of Earth reaching its global capacity. Thus, the correct option for this question is D.
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Which type of metabolic reaction is an example of a process that does not require coupling to atp hydrolysis?.
Why is dna synthesis considered to be discontinuous? what are some other terms associated with discontinuous dna synthesis?.
How does prokaryotic dna differ from eukaryotic dna?.
Answer:
hope this helps
Explanation:
Prokaryotic genomic DNA is attached to the plasma membrane in the form of a nucleoid, in contrast to eukaryotic DNA, which is located in a nucleus. Prokaryotes contain circular DNA in addition to smaller, transferable DNA plasmids. Eukaryotic cells contain mitochondrial DNA in addition to nuclear DNA.
Which of the following is an accurate statement of the relationships within this cladogram? The image depicts a cladogram with numbered and lettered branches. The image includes clades one, three, and seven on one fork of the tree, and clades two and four on the other. From clade one moving up the tree, the first fork is clade two which ends in organism group D. From clade two, clade five diverges ending in organism group C. Clade one continues up the tree, ending in organism group A. Toward the end of clade one, clade four diverges, ending in organism group B. On the remaining branch of the tree, moving upward from clade one, clade three diverges, ending in organism group E. From clade three, clade six diverges ending in organism group F. Clade seven diverges from the main branch, ending in organism group G, and the main branch ends in organism group H. Clades A and C are more closely related than clades A and D. Clade 1 is ancestral to all the other clades. Clades 3 and 7 are more directly related than clades 3 and 6. Clades 4 and 5 are ancestral to clades 1 and 2.
A cladogram is a tree-like graphic representation that expresses the relationship among several taxa. The correct option is B. Clade 1 is ancestral to all the other clades.
What is a cladogram?A Cladogram is a graph drown as a tree, which is based on cladistic analysis.
It represents the common ancestral relationships and the emergence of different characters among the involved groups.
The tree-type graph is a ramified diagram that represents the relationship between the involved taxa.
It follows the maximum parsimony criterium, which explains the character state from the point of view of the fewest possible changes through history.
The cladogram represents the relationship between groups according to a derived character.
The derivated character is any trait that emerges at some point of history in a group and is inherited by all the descendants. All the subsequent groups in the cladogram carry the trait.
Cladogram structureThe cladogram is composed of
Lineages → The taxonomic groups of interest. These are placed in the extremes of the branches. Nodes → These are the ramification points, which are also known as divergence points. They represent the location of the most recent common ancestor. Root → This is the older common ancestor that all lineages share. The first one in the tree.According to this framework about cladograms and the given information, the correct option is B. Clade 1 is ancestral to all the other clades.
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Answer:
Clade 1 is ancestral to all the other clades.
Explanation:
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The _______ the time period during which a species lived and the _______ the distribution of its fossils, the better an index fossil the species is.
A.
shorter; narrower
B.
longer; narrower
C.
longer; wider
D.
shorter; wider
Which of the following best describes
which living organisms create the community of an ecosystem?
A. any living thing from single to multicellular plants or
animals
B. anything that is a multicellular organism
C. anything that has the ability to hunt for its own food
D. anything living that is considered to be plant life
Answer:
A
Explanation:
The study of how the same genotype may lead to different phenotypes is known as.
Answer:
In other words, researchers study how the same genotype can lead to very different phenotypes Genotype. Phenotype. The hereditary information of the organism in the form of gene in the DNA and remains the same throughout the life. The characters of an organism which are visible are known as phenotypes.
Explanation:
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The study of how the same genotype may lead to different phenotypes is known as epigenetics.
What is epigenetics?Epigenetics is the study of how environmental factors and behaviour can alter how your genes function.
While epigenetic alterations are reversible and do not alter your DNA sequence like genetic changes do, they can alter how your body interprets a DNA sequence.
In biology, the study of persistent phenotypic changes that do not entail changes in the DNA sequence is known as epigenetics.
The word "epigenetics" comes from the Greek prefix epi, which denotes characteristics that are "on top of" or "in addition to" the conventional genetic basis for heredity.
Epigenetic patterns may be affected by a number of lifestyle factors, including food, obesity, physical activity, alcohol consumption, smoking, exposure to environmental toxins, stress, and working night shifts.
Thus, the answer is epigenetics.
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What happens in telophase of mitosis?
•This is the cell's normal functioning stage
•Chromosomes are on opposite sides of cell, nucleus is reforming
• Chromosomes line up in the middle
•Two separate cells are made
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Jena is reviewing her notes on action potentials for a quiz. She makes an extra notation that before the action potential when the neuron is at rest, sodium channels _____.
Before the action potential when the neuron is at rest, sodium channels are closed and don't allow sodium to pass-through. These channels are proteins.
What are sodium channels?Sodium channels are specific channels composed of proteins that allow the passage of sodium ions in cells (e.g., neurons).
This passage is fundamental to generating a membrane potential during the transmission of electrical impulses.
When one action potential has been produced the depolarization of cells activates sodium channels.
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The smallest, living functional unit an organism can be dived into is the
Answer:
cell
Explanation:
Genetic engineering of agricultural crops has primarily increased the productivity of modern farming by.
Answer:
hope it helps
Explanation:
by increasing plants drought resistance and resistance to pests
Which statements describe the advantages of s**ual reproduction? Check all that apply.
Answer:
Explanation:
2 and 5 are your answers