Oxygen and carbon dioxide are the two nonpolar gases which we exchange during aerobic respiration.
Explanation:
Both oxygen and carbon dioxide are nonpolar and smaller compared to the polar water molecules. These gases pass across the cell membrane through simple diffusion. Gaseous exchange takes place through the thin alveolar and capillary walls in the lungs. Oxygen is taken in and carbon dioxide is released out during this gaseous exchange.
Diffusion of gases is a passive process and hence no energy is actually required. Since the exchange occurs as a passive transport or diffusion across a concentration gradient that is separated by membrane barrier.
A Punnett square is used to predict the potential offspring from a cross. true or false
Answer:
true
Explanation:
What is the acceleration of a 50 kg object pushed with a force of 500 newtons
Force is equal to mass times acceleration, therefore acc. is equal to Force divided by mass.
500 N /50kg equals 10m/s^2.
The acceleration of a 50 kg object pushed with a force of 500 Newtons is 10 m/s^2, calculated using Newton's second law of motion.
Explanation:To calculate the acceleration of an object, we use Newton's second law of motion, which states that the force acting on an object is equal to its mass multiplied by its acceleration (F = ma). If a 50 kg object is being pushed with a force of 500 Newtons, you would solve the equation for acceleration, a = F/m. Thus, a = 500N / 50kg = 10 m/s^2.
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need help by today labeling these.
Answer:
A: Vacuole
B: Mitochondria
C: Cell Membrane
D: Smooth ER
E: Rough ER
F: Cell Wall
Explanation:
Vacuole- near nucleus
Mitochondria- green oval looking thing
Cell Membrane- always before cell wall in a plant cell
Smooth ER- can be near rough ER ( no ribosomes)
Rough ER- always near nucleus
Cell Wall- large green thing surrounding cell membrane
Protozoans (animal-like) because they can gather food and ________
Answer:
How are they animal like?
Explanation:
Answer:Water
Explanation: I'm Smart
What is the correct answer?
Answer:
First one
Explanation:
Only answer that makes sense.
1. Which of the following Punnett Squares shows the correct offspring for a heterozygous mother and a homozygous recessive father?
A. 1
B. 2
C. 3
Punnet square showing heterozygous mother is Rr and homozygous recessive father as rr. The correct square is 2nd one.
What is homozygous and heterozygous ?A homozygous is defined as the allele containing both the same type of genes whereas the heterozygous allele has different types of gene.
A heterozygous mother Rr when mates with the homozygous recessive father that is rr. when Rr segregates into R and r and the rr segregates into r and r the two are recessive homozygous and two rest are called as recombinant ones. The percentage for both of the genotypes is 50 and 50. The phenotype is recombinant with the dominant phenotype and the recessive phenotype as rr.
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RGY CONCEP
ESSENTIAL QUESTIONS
• How do Earth's land
biomes differ?
Answer:
. A biome is a specific geographic area notable for the species living there.
Explanation:
Each biome can be classified because of the animals and plants that live there. Basically, they differ by the living and non-living things that make up the biome.
Identify structure A.
Identify structure B.
Identify structure C.
Identify structure D.
3209-03-07-20-02
Answer:1.a 2.b 3.c 4.d
Explanation:
i did it on e2020
Answer:
1.a 2.b 3.c 4.d trust me
Explanation:
(Plz help)
At which point on the graph displaying human population growth would factors like drought and fires likely have the greatest impact
in growth rate?
Between points A and B
Between points B and C
Between points C and D
Equally at any point on the graph
Points between B and C displaying human population growth would factors like drought and fires likely have the greatest impact in growth rate.
What do you mean by growth rate?The term “growth rate” describes the rate of change in the value of a specific metric across a given time period, expressed as a percentage. Common examples of scenarios where the growth rate is often used are the following: Company Sales. Population.
Moreover, growth rates are computed by dividing the difference between the ending and starting values for the period being analyzed and dividing that by the starting value.
Therefore, the growth rate of a value (GDP, turnover, wages, etc.) measures its change from one period to another (month, quarter, year). It is very generally expressed as a percentage.
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Need help so please!!!
Answer:
60 percent because 30/50 have curly hair 30/50 is 60 percent.
What are the factors of the polynomial?
O (2x+3)(x+1)
(2x-3)(x-1)
(3x+2)(x+1)
(3x-2)(x-1)
ELLER
El
The factors of the polynomial is (3x+2)(x+1). The correct option is C.
What is polynomial factorization?Factorization of polynomials, also known as polynomial factorization, is the process of expressing a polynomial with coefficients in a specified field or in numbers as the product of independent factors with values in the same domain.
Thus, the correct option is C, (3x+2)(x+1).
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Please answer ASAP
Which of the following best defines metabolism?
Choose 1 answer:
A.) Any process that requires energy
B.) A reaction that breaks down large substances into smaller ones
C.) The process of building complex molecules from simple molecules
D.) The complete set of reactions carried out by a cell
Answer:
The answer is B.
Explanation:
Metabolism is the process where large molecules are broken down into smaller molecules to obtain energy.
The statement 'the complete set of reactions carried out by a cell' BEST defines metabolism (Option D).
Metabolism refers to all chemical reactions that cells perform to carry out their functions (e.g., growth, differentiation, reproduction, etc).
Metabolic reactions can be divided into anabolic reactions and catabolic reactions.
Catabolic reactions are metabolic reactions that break down large molecules into smaller molecules, thereby releasing energy.
Anabolic reactions are metabolic reactions that synthesize large molecules by using smaller molecules, thereby consuming energy.
In conclusion, the statement 'the complete set of reactions carried out by a cell' BEST defines metabolism (Option D).
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10 POINTS Which organisms belong to the Kingdom Protista?
Select the two correct answers.
amoeba
sea anemone
beetle
seaweed
Answer:
amooeba and seaweed
Explanation:
the other 2 are in different kingdoms
The organisms belong to the Kingdom Protista are Amoeba and seaweed. Option A and D are correct.
What is kingdom Protista?The organisms which are not considered as plants, animals, or fungi, but it is a simple eukaryotic organism. Protists can be found in moist, damp or terrestrial environment or even as a parasite. They can be found either in colonies or they are unicellular.
The Greek word “protistos”, means “the very first” is the term where ‘Protista’ is derived from. These are eukaryotic unicellular organisms consisting well bound nucleus and the cell organelles.
In some protists flagella or cilia are present for their locomotion. As they were the first eukaryotes they are considered as predecessor of animals, plants, and fungi. Some examples of protists include, Amoeba, Paramecium, Euglena and seaweed.
Therefore option Amoeba and seaweed are correct.
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F = freckles f= no freckles
3. A man who is heterozygous for freckles marries a woman who is also heterozygous for freckles.
a. What are the two genotypes? _________________
b. % of offspring that will be homozygous dominant ___________
c. % of offspring that will be heterozygous ___________
d. % of offspring that will be homozygous recessive ___________
e. % of offspring that will have freckles ___________
f. % of offspring that will not have freckles__________
A. Ff for both
B. 75%
C. 25%
D.0%
E.75%
F. 25%
Hope this helps you:)
Answer:
a. Ff for both
b. 25%
c. 50%
d. 25%
e. 75%
f. 25%
since both are heterozygous, when you genetically cross them, the probability of getting homozygous dominant is 1/4(25%), heterozygous will be 50%, homozygous recessive is 25%, 75% will have freckles since F is the dominant for freckles. 25% will have no freckles.
what are producer consumer decomposer
Answer:
Producers are Autotrophs that make their own food Consumer is the ones that eats other organisms that makes them heterotrophs and decomposers break down the dead organisms
Explanation:
1. Some bloodsucking insects insert their mouthparts directly into a blood vessel and withdraw biod. Other
bloodsucking insects have mouthparts that cut through the skin and blood vessels, and produce a small poslo
blood from which they feed. Both mouthparts types are specialized for:
a autotrophic nutrition b. heterotrophic nutrition c regulation d excretion
Answer:
The answer is heterotrophic nutrition because mosquitoes depend on your blood for survival, and autotrophic nutrition is for plants! Hope this helps! Stay safe and don't get coronavirus!
Explanation:
Complete the statements below.
When muscles contract, they become____
The muscles of the rear end, legs, and feet are called____ muscles.
______ muscles move food down the
digestive tract.
The correct completions for the statements are as follows: When muscles contract, they become shorter and thicker. The muscles of the rear end, legs, and feet are called skeletal muscles. Smooth muscles move food down the digestive tract.
1. When muscles contract, they exert force on the structures they are attached to, which typically results in the muscles becoming shorter and thicker. This is due to the sliding filament mechanism where the myosin heads pull on the actin filaments, causing the filaments to slide past each other and shorten the muscle fiber.
2. The muscles of the rear end, legs, and feet are classified as skeletal muscles. These muscles are striated, under voluntary control, and attached to the skeleton by tendons. They are responsible for movement and posture.
3. Smooth muscles are responsible for moving food down the digestive tract. These muscles are involuntary and are found within the walls of internal organs such as the stomach, intestines, and blood vessels. They are called smooth because they lack the striated appearance of skeletal and cardiac muscles. The coordinated contractions of smooth muscles, known as peristalsis, propel food through the digestive system.
QUESTION 17 Which of these has an elliptical orbit around the sun? Earth Jupiter Mars Earth, Jupiter, and Mars
Answer:
Earth
Explanation:
Answer:
earth
Explanation:
Earth moves around the Sun in an elliptical orbit. Earth's orbit is almost a perfect circle; its eccentricity is only 0.0167.
Under the influence of gravity, over time the dense central part of a galaxy will do what?(1 point)
expand
stay as it is, forces balanced
stay the same size but spin more slowly
contract
Answer:
D
Explanation:
Under the influence of gravity, over time the dense central part of a galaxy will:
contractGravity is the magnetic force of matter that enables something that goes up, in the earth's atmosphere, to come down, because of the magnetic pull.When the dense central part of a galaxy is under the influence of gravity, then it would contract.Therefore, the correct answer is option DRead more here:
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Describe how
dehydration, ADH and thirst play a role in the feedback mechanism that controls water balance in the
human body.
Answer: Ok so this may be a little off but ill do my best
Explanation:
On a typical day, the average adult will take in about 2500 mL (almost 3 quarts) of aqueous fluids. Although most of the intake comes through the digestive tract, about 230 mL (8 ounces) per day is generated metabolically, in the last steps of aerobic respiration. Additionally, each day about the same volume (2500 mL) of water leaves the body by different routes; most of this lost water is removed as urine. The kidneys also can adjust blood volume though mechanisms that draw water out of the filtrate and urine. The kidneys can regulate water levels in the body; they conserve water if you are dehydrated, and they can make urine more dilute to expel excess water if necessary. Water is lost through the skin through evaporation from the skin surface without overt sweating and from air expelled from the lungs. This type of water loss is called insensible water loss because a person is usually unaware of it.ADH is a hormone in your body that helps your kidneys manage the amount of water in your body. Dehydration means you need water and when your thirsty your body wants water. So when your thirsty, your brain is letting you know you need water, and if you don't drink water you will become dehydrated and that can lead to kidney failure.
Your kidneys have a very important role of water management.
I really hope this helps :)
How are atoms in molecules being rearranged into different molecules during photosynthesis?
Answer:
Photosynthesis demonstrates the law of conservation of matter which states that atoms cannot be created nor destroyed; the atoms can only be rearranged into new molecules and ions. Photosynthesis is aided by enzymes, special proteins, which can either break chemical bonds or form bonds in molecules
Which is the largest sinus cavity?
A.
Frontal sinus
B.
Maxillary sinus
C.
Sphenoidal sinus
D.
Ethnoid sinus
The maxillary sinus, located in the maxillary bones under the eyes, is the largest sinus cavity in the human body. Sinuses assist in filtering, moistening, and warming the air we breathe.
Explanation:The largest sinus cavity in the human body is the maxillary sinus. It is one of the four pairs of paranasal sinuses that are situated within the skull and connected to the nasal cavity. The maxillary sinus is located in the maxillary bones, right below the eyes. Compared to the frontal, ethmoid, and sphenoid sinuses, the maxillary sinus is the largest. These sinuses are filled with air and lined with a mucus membrane that helps filter, moisten, and warm the air we breathe.
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2. When you decrease the pH in the simulation, the ocean's acidity increases. What do you expect
to happen over time to the population of the corals, algae, and fish in the coral reef as the pH of
the ocean decreases?
Answer:
With decrease in pH of ocean water, the survival rate of corals, algae, and fish in coral reef reduces.
Explanation:
Coral reefs find difficulty in living in acidic ocean water. It is so because the coral’s shell that is made up of calcium carbonate is unable to sustain in acidic environment.
Not only this the skeleton of snails, clams, algae , fish etc is also made up of calcium carbonate. Increased acidity leads to death of these species.
Thus, the lower is the pH of ocean water, the higher is its acidity and hence the lower is the probability of survival of corals, algae, and fish in the coral reef
pH is among the limiting factors that might affect coral, algae and other species. A decrease in water pH causes an increase in acidity, which leads coral, algae, and fish in the coral reef to death.
What is the relationship between corals and algae?
Corals are translucid or white, but they look brightly colored because they host symbionts with colorful photosynthetic pigments . They can host different organisms that live on and among them, giving place to an amazing ecosystem.
One of these organisms is the photosynthetic unicellular microalgae, called zooxanteles. Corals provide shelter and protection to the algae, while algae provide nitrogenated nutrients, sugars, and color to the corals.
This symbiotic relationship allows corals to grow in different environments that are poor in nitrogen or other nutrients, such as the tropical clear waters.
What are the limiting factors of corals and algae?Limiting factors are environmental conditions that act directly on populations and individuals, limiting their distribution and growth.
Some of these factors are water, temperature, pH, salinity, and radiation.
When changes in any of these factors occur, corals react to these changes losing these algae and becoming translucid again.
pH is a significant limiting factor for coral survival because their calcium-carbonated shell is sensitive to acidic environments.
When there is a decrease in oceanic pH, occurs an increase in water acidity, causing coral, algae, and other organisms death.
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Scientists found evidence of a time period 3 billion years ago when Lee's energy entered the Earth system than exited. What is one change to the atmosphere that could have caused this, how did it change the amount of energy in the Earth system?
A) methane increased, leading two more energy in the earth system and more energy absorbed by Earth's surface.
B) methane increased, leading to less energy in the earth system and less energy absorbed by Earth's surface.
C) methane decreased, leading to more energy in the earth system and more energy absorbed by Earth's surface.
D) methane decreased, leading to less energy in the earth system and less energy absorbed by Earth's surface.
PLEASE HELP ASAP!!
Answer:
i think its a
Explanation:
The correct answer is A: methane increased, leading to more energy in the earth system and more energy absorbed by Earth's surface. This is due to methane's effectiveness as a greenhouse gas that traps heat in the Earth's atmosphere.
The question deals with the effects of methane on the Earth's energy balance, specifically during a time period 3 billion years ago when less energy entered the Earth system than exited. As it pertains to the greenhouse effect, when the concentration of methane in the atmosphere increases, it leads to more energy being trapped within the Earth system. Methane is a potent greenhouse gas that absorbs and emits infrared radiation much more efficiently than carbon dioxide, contributing to an increase in the Earth's surface temperature because it traps more heat in the atmosphere.
Given this understanding, the correct option is A which states that an increase in methane leads to more energy in the earth system and more energy absorbed by Earth's surface. This is consistent with the function of greenhouse gases, notably their role in allowing sunlight to enter but impeding the escape of infrared radiation back into space, resulting in warming.
Do robber crabs have more in common with dolphins or with sponges?
Answer:
humans
Explanation:
Robber crabs are excellent climbers
Genes are sections of DNA that code for a particular trait. Genes are
•carbohydrates
•lipids
•proteins
•nucleic acids
Answer:
Nucleic acids
Explanation:
got 100% on test
Color Blindness is a sex-linked, recessive trait. Which of the following describes the probability of Color Blindness in the offspring of a man who is not color blind and a woman who is a heterozygous carrier? To receive credit highlight the correct answer and complete the Punnett Square
The answer is in the image attached.
Hope this helps!
The probability of Color Blindness in the offspring of a man who is not color blind and a woman who is a heterozygous carrier is 50% for males and 0% for females.
What is a Punnett square?A Punnett square is a diagram used in genetics to describe gametic combinations in the offspring.
In this case, the chance for males is equal to the chance of transmitting this trait for the mother (50%).In this case, the chance for females is equal to 0% because the father is not affected.
In conclusion, the probability of Color Blindness in the offspring of a man who is not color blind and a woman who is a heterozygous carrier is 50% for males and 0% for females.
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What roles do the thymus, thyroid, and parathyroid glands play in the human body? Check all that apply.
They regulate sugar in the blood.
They regulate calcium in the blood.
They regulate metabolism in the blood.
They attack pathogens.
Answer:
They regulate calcium in the blood.
They regulate metabolism in the blood.
They attack pathogens.
Explanation:
Answer:
They regulate calcium in the blood.
They regulate metabolism in the blood.
They attack pathogens
2,3, and 4
Explanation:
i got it right
An enzyme is a large ____ molecule.
A. Nucleic Acid
B. Protein
C. Carbohydrate
D. Polysaccharide
Answer:
B Protein molecule
Explanation:
Enzymes are protein molecules in cells and speed up chemical reactions in the body, but do not get used up in the process, therefore can be used over and over again
Answer:I believe it is B, Protein
Explanation:Im always correct
Analyze: Was the increase in the average beak depth caused by an increase in
large-beaked finches or a decline in small-beaked finches? Explain your answer.
Answer:
No
Explanation:
Charles Darwin went to the Galapagos island and found four different types of finch, he found out that all there beaks where different which allowed them to adapt to their environment. their beaks are for different things.
Answer:
I believe the increase in the average beak depth was caused by both the increase in large-beaked finches and a decline in small-beaked finches, since due to the disappearance of the small-beaked finches, only the long-beaked finches will be taken into consideration, so the average depth of the beak will be greater. The finches with small beak depth will not be counted.
Explanation: