As a cell gets bigger, diffusion becomes less efficient because the surface-to-volume ratio decreases. As the sphere or animal gets bigger, the surface area for diffusion gets smaller.
Describe a cell example:All of these plants and animals, including trees in a forest, fish in a river, horseflies on a farm, lemurs in the jungle, reeds in a pond, and worms in the soil, are comprised of the building blocks known as cells. Many living organisms, like these examples, are made up of many cells cooperating with one another.
What does a cell perform?They provide the body with structure, absorb the nutrients from food, turn those into energy, and carry out specific functions. Furthermore, cells have the ability to replicate themselves that contain the brain's genetic material.
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Sandstone and all other types of sedimentary rock are made up of particles. The source materials of these particles consist of
O A. fragments that broke off of older rocks.
O B. magma that cooled deep below a volcano.
C. gases that condensed in the atmosphere.
O D. vegetation that decayed in thick layers.
Answer:
A. fragments that broke off of older rocks.
Explanation:
Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface. Sedimentary rocks often have distinctive layering or bedding. Many of the picturesque views of the desert southwest show mesas and arches made of layered sedimentary rock.
when a person eat were salt with water ?
Answer:
Salt is everywhere. It’s in our pantries and on our kitchen tables. It is present in most foods we eat and some beverages we drink. It is essential for our bodies to function properly. However, it also can be dangerous, or in some cases even deadly. Recently a mother in South Carolina made headlines for killing her 17-month old daughter—using just a teaspoon of salt. For many the reaction to the story was not only shock but questions about how that was even possible. “Salt poisoning is a real thing,” says Sherrie Pace with the Utah Poison Control Center. “There are dangerous salt ingestion practices demonstrated on the Internet that some people will follow, and they don’t understand the risk”
1. Compare the characteristics of aquatic and terrestrial biomes by completing the table below.See picture please
Organisms living in each biomes have to deal with differents circunstances, like different practices of feeding (since the aliment can be suspended in the water, or swimming aroudn) and the finding of couple, but if we have to mention one important adaptation of these two kind of organisms, aquatic and terrestrial, we can talk about how the process of fertilization occurs. In the water, organisms usually realese their sexual cells to the external media, while in terrestrial organisms, they only can reproduce themselves interactuating directly with the couple, having an internal fertilization.
HURRY PLEASE
Which of the following distinguishes why large corporate farms are losing favor with the public?
A) The quality of the farms’ food has declined since the 1980s.
The quality of the farms’ food has declined since the 1980s.
B) The farms have been withholding food in order to receive more funding.
The farms have been withholding food in order to receive more funding.
C) The public is upset with the farms’ unnatural farming practices.
The public is upset with the farms’ unnatural farming practices.
D) The farms have been raising their prices due to water shortages.
The farms have been raising their prices due to water shortages.
Answer:
A
Explanation:
Answer: The correct answer is C) The public is upset with the farms’ unnatural farming practices.
Explanation: This answer is confirmed correct.
Corporate farms are geared toward cost savings and making a profit, so they do not typically invest in protecting natural resources and using better processes for the environment.
R is the allele for round seeds while r is the allele for wrinkled seeds. Y is the allele for yellow seeds and y is the allele for green seeds.In a cross of parents heterozygous for each trait (RrYy x RrYy), what fraction of the offspring are expected to have round green seeds?A) 1/16B) 9/16C) 3/16D) 1/4
We have two parents with RrYy genotype.
We can see the cross with a Punnett square, and look for the seeds with genotype RRyy or Rryy, which will produce round green seeds.
As we can see, 3/16 of the seeds will be round and green, which means C) 3/16 would be the right answer.
The magnitude of the electric force between two particles depends on which
factors?
о A. Charge and density
OB. Charge and distance
OC. Mass and charge
OD. Mass and distance
Can someone help me I have until tomorrow so please
When focusing a specimen you should always start with lower power objective .
How to use microscope?Lower the stage (the flat ledge on which the slide is situated) to its lowest setting.Onto the stage, place the glass slide. Make sure the cover slide doesn't move or break when you push it under the clips.Choose an objective lens with the lowest .Once the cells are visible, turn the coarse focus knob.powerWhen the cells are sharply in focus and visible, steadily turn the finefine focus knob.To see the cells more clearly and to repeat steps 1 through 5, use the higher.When using the high power objective only the fine adjustment knob should be used.The type of microscope used in most science classes is the light microscope. You should carry the microscope by the arm . The objective are attached to what part of the microscope revolving nosepiece.To learn more about microscope refer
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A drug that decreases the activity of an enzyme, by binding to its active site, is called _____?
Group of answer choices
a feedback activator
an active inhibitor
a competitive inhibitor
a noncompetitive inhibitor
A drug that decreases the activity of an enzyme by binding to its active site is called a competitive inhibitor.
An inhibitor may bind to an enzyme and block the binding of the substrate, for example, by attaching to the active site. This is known as competitive inhibition as the inhibitor “competes” with the substrate for the enzyme. In other words, only the inhibitor or the substrate can be bound together at a given moment.
If an inhibitor is competitive, it will decrease the reaction rate when there's not enough substrate, but can be "out-competed" by lots of substrates. That is, the enzyme can still reach its maximum reaction rate given there is enough substrate. Accordingly, almost all the active sites of the enzyme molecules will get replaced by the substrate rather than the inhibitor.
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Can the O&P be completed in the office? Why or why not?
Is there a specific time of day the O&P should be completed?
What are the directions you as the MA would give to Ms. Samuels?
Answer: Why or why not?Is there a specific time of day the O&P should be completed? What are the directions you as the MA would give to Ms. Samuels?
Explanation:
A person walks from rest to 5.20 meters/second in 10.4 seconds. What is the person's acceleration?
The acceleration of the person in 10.4 seconds will be 0.5 m/s².
How is acceleration and force related to each other?Force is defined as the product of mass of the body and the acceleration with which it is moving. Mathematically -
F = ma
Acceleration and force are related as we can write -
a = F/m
Acceleration is a vector quantity. In the three dimensional coordinate system, the acceleration vector can be resolved as -
[a] = F[x]/m + F[y]/m + F[z]/m
Given is a person who walks from rest to 5.20 m/s in 10.4 s.
We can write -
[u] = 0 m/s
[v] = 5.20 m/s
[Δt] = 10.4 s
Substituting the values in the formula -
a = (v - u)/[Δt]
a = 5.20/10.40
a = 0.5 m/s²
Acceleration will be 0.5 m/s².
Therefore, the acceleration of the person in 10.4 seconds will be 0.5 m/s².
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What else is missing from this equation that a plant needs in order to do photosynthesis?
A plant needs carbon dioxide and light energy in order to perform photosynthesis.
Commonly used equation for photosynthesis is: [tex]6CO_{2}[/tex] + [tex]6H_{2}O[/tex] → [tex]C_{6}H_{12}O_{6}[/tex] + [tex]6O_{2}[/tex]. This illustrates how light energy is absorbed by chlorophyll (implied by the arrow) to turn the reactants, six carbon dioxide molecules and six water molecules, into a sugar molecule and six oxygen molecules, the products.
Photosynthesis is a process by which the plants use light energy and carbon dioxide from the atmosphere to convert into glucose sugar and oxygen. Oxygen is required by every living organism to respire and live. Whereas, glucose produced is used by plants as their food constituent and is generally stored in the form of starch.
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Question 4 of 10
A biology class observed monarch caterpillars over several weeks. On the
first day, the caterpillars were 2 mm in length. The caterpillars ate milkweed
leaves. After 14 days, the caterpillars were 30 to 40 mm in length. Which two
characteristics of life did the caterpillars demonstrate?
A. Obtaining matter and energy
B. Growth and development
C. Reproduction
D. Evolution
Growth and development are the two characterstic of life in which caterpillar demonstrate
What features distinguish growth?Hint: Growth is an increase in bodily mass and size that may result in long-lasting anatomical alterations. Protoplasmic enlargement, cell division, cell death, and differentiation rates, among other things, are some of the factors that affect growth.
Growth refers to an increase in the organism's/plant's body size and mass with time. whereas, when an organism or a plant grows mentally, physically, as well as physiologically, the processor of that phase is recognized and named as the development of that organism/plant.
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Answer:
B. Growth and development
A. Obtaining matter and energy.
Explanation:
A and B are correct
a scientist decided to test her hypothesis that male fiddler crabs come out morr often at dush rather than dawn. what would be the independs varible
The experiment's independent variable would be the proportion of females.
Male fiddler crabs are more busy at night than in the morning because they are looking for females to interact with.
What makes male Fiddler crabs want to attract females?Males wave their extended claw in the direction of women to entice them to have physical contact. When a female is ready for physical contact, she will emerge from her burrow and stroll among the waving men (her ovaries are ripe). Before choosing one as her partner, she visits other males (up to 24).
During a visit, the female approaches the male immediately, follows him into his burrow, stays there for a short while, and then emerges to carry on with her exploration.
The male emerges and gathers sand to block the burrow entrance five minutes after the female accepts him as her spouse. The woman then disappears into thin air.
He plugs it from the inside, burying the woman and himself in the process. She swings a bat at eggs.
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4. What are the parent genotypes for pea seed color shown in this Punnett
Square?
Answer:
heterozygous and homozygous recessive
The diagram below shows the mRNA codes that corresponds to amino acid and stop codons. Read the diagram from the center outwards. For example, the mRNA code UAC corresponds to the amino acid tyrosine.
The genetic code represents which amino acid corresponds to each codon. The first nucleotide of the triplet is represented in the center, and then from the corresponding one outwards.
GCG = Alanine
GAU = Asparagine
CAA = Glutamine
Question is in the image
(IT HAS TWO ANSWERS)
NAD+ and ADP have less energy.
What are NAD+ and ADP?NAD+ is a direct precursor to numerous small molecules including ADP-ribose (ADPr), cyclic ADP-ribose (cADPr), NAADP, and O-acetyl-ADP-ribose (OAADPR); all of which are crucial second messengers that control a variety of biological processes, including cell survival, death, and inflammation.The coenzyme nicotinamide adenine dinucleotide (NAD+) is essential for redox reactions and hence plays a major role in energy metabolism. For non-redox NAD+-dependent enzymes, including sirtuins, CD38, and poly(ADP-ribose) polymerases, NAD+ is also a crucial cofactor.Adenosine pyrophosphate (APP), also known as adenosine diphosphate (ADP), is a crucial chemical component in metabolism and is necessary for the movement of energy in living cells.To learn more about NAD+, refer
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During cellular respiration the two molecules that are formed with less energy are:
1. ATP
2.NADH
What is cellular respiration?Cellular respiration is a series of chemical reactions that break down glucose to produce ATP, which can then be used as energy to power a variety of reactions throughout the body.Cellular respiration consists of three major steps: glycolysis, the citric acid cycle, and oxidative phosphorylation.Glucose, ATP, and NAD+ are the initial reactants of cellular respiration and ATP and H2O are the final products.The goal of cellular respiration is straightforward: it provides cells with the energy they require to function.To learn more about cellular respiration refer to :
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What makes lipids/fats hydrophobic and not mix with water?
Ophosphate group at one end of the molecule
O presence of C=C (carbon double bonds)
Oglycerol
fatty acid tails
Fatty acid tails makes lipids/fats hydrophobic and not mix with water.
What is hydrophobic interaction?Hydrophobic interactions describe the relations between water and hydrophobes (low water-soluble molecules).
Hydrophobes are nonpolar molecules and usually have a long chain of carbons that do not interact with water molecules. The mixing of fat and water is a good example of this particular interaction.
Liquid water is held together by hydrogen bonds. (Liquid water has fewer hydrogen bonds than ice.) Oils and fats not have any polar part and so for them to dissolve in water they would have to break some of water's hydrogen bonds.
Thus, the fatty tails are hydrophobic in nature composed of hydrocarbon chains that are uncharged hence do not interact with water.
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