Well I suggest BIOLOGY!!!!!
1. Carbon is essential to life on Earth. One reason it is so vital is that it is able to form bonds with many other
elements and with itself. Inside living things, there are many compounds based on carbon, including fats,
sugars, starches and oils. There are four main types of carbon compounds: carbohydrates, lipids, proteins
and nucleic acids. Each of these has important roles in living organisms. Proteins make up muscles and
carry messages, and carbohydrates give cells energy.
What is the meaning of the word "vital" in the passage?
A necessary
B. Small
C. energetic
D. useless
Answer:
a
Explanation:
vital means necessary in all casss
How does osmosis affect plants?
Answer:
Plant cells are enclosed by a rigid cell wall. When the plant cell is placed in a hypotonic solution, it takes up water by osmosis and starts to swell, but the cell wall prevents it from bursting. The plant cell is said to have become 'turgid', i.e. swollen and hard.
Explanation:
Answer:
Effects of osmosis in plant cells answer below
Explanation:
Plant cells are enclosed by a rigid cell wall. When the plant cell is placed in a hypotonic solution, it takes up water by osmosis and starts to swell, but the cell wall prevents it from bursting.
Your body has a layer of skin that protects it from the environment. This layer of skin is made up of many individual skin cells. Explain where all the cells came from and how two individual cells share the same traits.
Stratum Corneum This layer is composed of the many dead skin cells that you shed into the environment—as a result, these cells are found in dust throughout your home. This layer helps to repel water.
The cells of the skin layer that protects the body came from preexisting cells.
This is according to the cell theory which states that:
cells are the basic unit of lifecells arose from existing cells by reproductionall living organisms are made of cellsCells can only arise from existing cells by a reproductive process known as cell division. Cells can divide by mitosis if they are vegetative cells or by meiosis if they are sex cells.
The daughter cells produced in meiosis are usually genetically and phenotypically different from their parent cells, unlike mitosis where the daughter cells are essentially the same as the parent cells both genotypically and phenotypically.
The cells of the skin are vegetative cells. Thus, they can only reproduce by mitosis. This is why individual skin cells share the same trait.
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acceleraiton in circular motions is know as blank
Answer:
centripetal acceleration
Explanation:
How does the magnetic field surrounding Earth benefit humankind?
A. It prevents magma from seeping out of the crust.
B. It steers aircraft away from radiation belts.
C. It protects us from radioactive particles.
D. It draws more oxygen into the atmosphere.
Answer:
C. It protects us from radioactive particles.
Explanation:
it prevents the Earth from ultraviolet radiation and other harmful substances from space. One stripping mechanism is for gas to be caught in bubbles of magnetic field, which are ripped off by solar winds
Glycogen is a molecule that contains many glucose molecules. Which best describes glycogen?
A. Glycogen is a lipid and helps the body use energy.
B. Glycogen is a polysaccharide and helps the body use energy.
C. Glycogen is an amino acid and is used as a building block for other materials.
D. Glycogen is a nucleic acid and is used as a building block for other materials.
Answer:
B
.......,...................
Which statement is correct concerning the chances of survival for these species if there is a change in the environment?
Answer:
B
Explanation:
Series A has the best chance of survival because it has most genetic diversity
Specimen A has the best chance of survival because it has the most genetic diversity.
What is genetic diversity?Genetic diversity is the ability of an organism to make use of various characteristics of its genetic make up.
From the specimen given, specimen A has the genetic characteristics seen in all other specimens.
Therefore, Specimen A has the best chance of survival because it has the most genetic diversity.
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A protein's shape does not influences its activity.
True
False
Answer:
False
Explanation:
Explain how the reduction and rearrangement are accomplished in meiosis.
Answer:
Reduction is accomplished by (homologous) chromosomes pairing and then separating to move to opposite poles during the 1st meiotic division. ... Rearrangement is achieved by the chromosomes crossing over into random alignments of tetrads, resulting in the genetic variation of the offspring.
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The type of cell division that allows the formation of cells with half of the genetic information of the dividing cell is known as meiosis, the reduction and rearrangement are accomplished in the following way:
Chromosome reduction occurs as a cell division process in which a diploid (2n) cell undergoes two successive divisions, generating haploid (n) cells.These cells called gametes have half the DNA of the rest of the individual's cells, this half of DNA is not random, but is precisely a complete chromosomal set.This halving allows the number of chromosomes of the species to be maintained at fertilization.Rearrangement occurs before chromosomes separate, corresponding sections of chromosomes can change, or cross, between the pair.Through recombination and random segregation, each pair of homologs obtains a mixed paternal and maternal chromosome, thus producing a new haploid chromosome set or set in which new combinations of genes have originated.The rearrangement of DNA increases genetic diversity within a population by passing genetic information to the next generation, which is not completely identical to that of the father.Therefore, we can conclude that meiosis is one of the ways in which cells divide, characterized by giving rise to daughter cells that are genetically different from the cell that originated them through chromosome reduction and rearrangement.
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Your dog licked the last of your spaghetti off your plate. Why might you wash it in bleach water? (Remember to refer to bacteria.)
Answer:because bacteria could multiply and spread dogs carry whatever knows what in there mouths cleaning the plate is just common sense
Explanation:
1. Why is it advantageous for scientises to test only one variable at a time during an experiment? 2. Distinguish between a variable and a control. 3. What is differentiation? 4. What are some advantages ande disadvantages of light microscopes and electron microscopes? 5. Explain why you cannot draw a conclusion about the effect of one variable in an investigation when the other key variables are not controlled.
Answer:
It is advantageous because the fewer variables are presented, the simpler the investigation and the more concrete the hypothesis will be.
A variable is that quantitative data that is modified or varies over time, it must be quantifiable, reasonable, and its variability must be expressed by means of indices, while the control group is the group that is controlled and compared. with other research groups to be able to relate cause-effect or risk factors by exposing them to the agent of the problem, while the researcher observes.
Differentiation is the process by which it is sought to find the differences in the investigation.
The advantages of electronic and optical microscopes is that we can observe very small beings, such as microbiological, or infected tissues, or even tissues to evaluate their histological architecture, they are very important for science and the medical professions, they are adjustable before different cephalometric morphologies, In other words, they can be adapted according to the size of the user to make it more comfortable.
The disadvantages are that the optical microscope cannot see very small microorganisms, such as some viruses and bacteria, and also has much less definition and sharpness than the electronic one, its costs are high, its CORRECT use is difficult to learn and teach, maintenance it is rigorous and delicate.
If the other variables are not controlled, then all the variables would be a possible cause or effect factor of a conclusion, that is, if we do not control the variables, we cannot propose a certain conclusion, effects or hypothesis, since the risk of The error is very high and the conclusions obtained from the uncontrolled variables will have little certainty or credibility.
Explanation:
Ls variables in an investigation can be dependent or independent.
It depends on the role they fulfill in the research, they can also be classified as homogeneous or heterogeneous, provided that one raises a main problem, a solution tree, takes into account variables that are selected to be able to face in the research. These investigations must be homogeneous, in order to provide more certainty in the hypothesis or in the conclusion.
That a variable is homogeneous means that it covers most or all the variances of a population, and is the most comprehensive or representative in a logical and reasonable way to what you want to investigate.
Which sample was most likely DNA?
Answer:
Hydrogen, Phosphorus, Nitrogen
Explanation:
Hoped this helped have a good day, brainlist?
Hydrogen, Phosphorus, Nitrogen was most likely DNA.
What is DNA?Humans and nearly all other species carry their genetic information in DNA, also known as deoxyribonucleic acid. The DNA of an individual can be found in almost all of their cells.
The majority of DNA is found in the cell nucleus (where it is known as nuclear DNA), but there is also a tiny quantity of DNA inside mitochondria (where it is called mitochondrial DNA or mtDNA). Cellular organelles called mitochondria transform the nutrients in food into the a form that can be utilised by cells.
Adenine (A), guanine (G), cytosine (C), and thymine (C) are the four chemical bases that make up the code that stores the information in DNA (T). More than 99 percent of the 3 billion bases that make up human DNA are the same in every person.
Thus, Hydrogen, Phosphorus, Nitrogen was most likely DNA.
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MULTIPLE CHOICE
Which two steps of the nitrogen cycle prepare the form of
nitrogen containing compounds that can be used by plants?
Select all that apply.
A
ammonification
B
denitrificaiton
C
nitrification
Answer:
A and C
Explanation:
IM pretty sure anyway i just finished up my biology so im not 100% sure but i know it has to do with ammonia and nitrite or nitrate so thats my best guess.
Determine whether each statement refers to species diversity or genetic diversity.
Every organism in an ecosystem relies on other species for survival:__________
Reduced options for mates can lead to inbreeding:
Decreased diversity can lead to increased susceptibility to disease:___________
The loss of a producer could result in the loss of consumers:___________
When a population becomes small, diversity is lost:
Answer:
1. species diversity
2. genetic
3. genetic
4. species
5. genetic
Explanation:
1 and 4th shows species diversity whereas 2, 3, 5 refers to genetic diversity.
What is the difference between genetic and species diversity?The primary difference between genetic diversity and species diversity is that genetic diversity refers to differences in DNA that may be found across individuals of the same species
Whereas species diversity refers to the number of different species that can be found in a certain region. The term "ecological diversity" refers to the range of ecosystems that may be found in a certain region.
A given species' capacity to adapt and spread across a variety of environments is facilitated by genetic diversity. Diversity of species fosters biotic interactions and community stability.
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How would overfishing affect our environment?
Question 5 options:
The water quality of the ocean will improve
The ecosystem will be out of balance
People will have to rely on other food sources
The oxygen levels will drop in the oceans
Question 3 of 10
How is a scientific theory developed?
Answer:
I think it is the scientific method.
Explanation:
Sorry for that lack of info.
If Gold (neutral) has an Atomic Mass of 197 and has 118 Neutrons what is its Atomic
Number?
Answer:
79
Explanation:
of
Which molecule has an
anticodon that is
complementary to the codon?
A. DNA
me
B. tRNA
RNA
C. mRNA
D. mitochondria
Answer:
tRNA
Explanation:
The anticodon is located in the Anticodon arm of the molecule of tRNA, while the codons are located in the molecule of DNA and mRNA. The anticodon is complementary to the respective codon, and the codon in the mRNA is complementary to a nucleotide triplet from a certain gene in the DNA.
Answer:
B. tRNA
Explanation:
what type of bond exists between two water molecules?
Answer:
hydrogen bonds
Explanation:
i looked it up for u
Fill in the blank:
This subject is on Lipids.
_______ fatty acids: fats that humans must eat because the body can’t make them.
Answer:
Polyunsaturated fatty acids: fats that humans must eat because the body can’t make them.
Hope this helped! :)
Explanation:
why are all bacteria microscopic and why is virus not a living thing?
Answer:
the world may not know why bacteria is microscopic but we do know that viruses are a living orgasm
Explanation:
example : coronavirus can move by its own because its a living orgasm but humans make it easy to travel by contact with other human. Also the spikes in the coronavirus is the cellular membran (membrana cellular) and it uses the spikes to inject other cells thus the need for handsanitiser and soap to destroy the cellular membran (membrana cellular) and kill the cell. stay safe :)
What are organelles and what are their functions within a cell?
Answer:
An organelle is a subcellular structure that has one or more specific jobs to perform in the cell, much like an organ does in the body. Among the more important cell organelles are the nuclei, which store genetic information; mitochondria, which produce chemical energy; and ribosomes, which assemble proteins.
Explanation:
Guys this is a lot of points help me out ASAP
Answer:
C
parasitism is like a parasite so tapeworm is the best answer.
crab is in which classification?
Answer:
sugar and glucose classification
What variable does homeostasis NOT control?
a. Fluid intake
b . Body temperature
C. Blood pressure
D. Blood glucose
Answer:
When blood sugar rises, receptors in the body sense a change. In turn, the control center (pancreas) secretes insulin into the blood effectively lowering blood sugar levels. Once blood sugar levels reach homeostasis, the pancreas stops releasing insulin.
A scientist is comparing the outer structure of an onion cell, structure X, to the outer structure of a human skin cell, structure Y. Which generalization is true about the types of structures being examined? Structure X is not living, and structure Y is living. Structure X can be found in some human cells, and structure Y can be found in some plant cells. Structure X is only found in plant cells, and structure Y is found in plant and animal cells. Structure X is semipermeable, and structure Y is selectively permeable.
Answer:
Structure X is only found in plant cells, and structure Y is found in plant and animal cells.
Explanation:
Answer:
Structure X is only found in plant cells, and structure Y is found in plant and animal cells.
Explanation:
what type of structures modify and distribute polypeptides through the cell"
Answer:
Quaternary structure
Explanation:
Quaternary structure insinuates the number and game-plan of the individual polypeptide chains. Each polypeptide is suggested as a subunit of the protein. Comparative powers and bonds that make tertiary structure moreover hold subunits together in a consistent eccentric to shape the complete protein.
This tissue type consists of single-layer of box-shaped cells that have a centrally located
nucleus. What are the primary functions of this tissue type?
(16 Points)
A. protection it lines underlying layers and may undergo keratinization
B. secretion and absorption found in the kidneys and in secretion glands
C. protection and lining, its distensibility allows it to expand and keeps diffusion from occurring
D. diffusion it functions in the exchange of gases in the lungs and lines blood and lymph vessels as well as
body cavities
Answer:
B. secretion and absorption found in the kidneys and in secretion glands
Explanation:
This type of epithelia is called simple cuboidal epithelia. It's present in glands(salivary glands, sweat glands) and in the collecting ducts of the kidney where, for example, it releases potassium ions or hydrogen ions in exchange for sodium(physiological process mediated by aldosterone).
The regularity of El Niño weather events is determined by
A the amount of gases that volcanoes create each year on the seafloor near Australia.
B changes in the size of a warm podl of water in the seas near Indonesia.
C a decrease in the frozen glaciers at Earth's poles.
D the magnetic strength of Earth's inner core.
Answer: The answer is B
Explanation:
This is a known knowledge about how hurricanes form. It's the same with El Nino, Good Luck.
A decrease in the frozen glaciers at Earth's poles can be the event by which we can determine the regularity. Correct option is C.
The term El Niño refers to a warming of the ocean surface in the central and eastern tropical Pacific Ocean.
Niño occurs when warm water builds up along the equator in the eastern Pacific areas. The warm ocean surface increase the temperature in the atmosphere, which allows moisture-rich air to rise and develop into rainstorms.
Therefore, a decrease in the frozen glaciers at Earth's poles can be the event by which we can determine the regularity.
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What do enzymes do what’s it’s work
Answer:
Enzymes create/speed up chemical reactions, along with many other very important tasks.
