Answer: Living organisms need water to survive. Organisms require water to break down food molecules or generate energy during the respiration process. Water also helps many organisms regulate metabolism and dissolves compounds going into or out of the body.
How does oxygen enter the urchins system?
Answer:
Enters through the gills and tubed feet.
Explanation:
The oxygen obtained by a Purple Sea Urchin is dissolved in water. Oxygen enters through the gills and tubed feet. When the oxygen level is low in a Purple Sea Urchin, muscles associated with Aristotle's Lantern pump fluid through the body (through the canals).
Any Questions?
Oxygen enters the sea urchin's system through the respiratory system, which is through the water vascular system, as the echinoderms have a significant type of system that helps them take the oxygen from the water.
What is the water vascular system?The water vascular system is seen in the phylum of the echinodermata, which is essentially a network of canals and tube feet that run throughout the urchin's body, and the tube feet are helpful for the attachment to the surface and for the respiration. When the tube feet are extended, oxygen from the water diffuses across the walls of the tube feet and into the urchin's body, while carbon dioxide is released into the water.
Hence, oxygen enters the sea urchin's system through the respiratory system, which is through the water vascular system, as the echinoderms have a significant type of system that helps them take the oxygen from the water.
Learn more about the water vascular system here.
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8. In a population of beetles, there is a gene for color with two codominant alleles. The allele R leads to red beetles and the allele B leads to blue beetles. Heterozygous beetles are red and blue spotted. A heterozygous beetle mates with a red beetle. What is are the genotypic and phenotypic frequencies of their offspring? Please show all of your work. (2)
Answer:
The genotypic frequency = 1:1
The phenotypic frequency = 1:1
Explanation:
Given that:
The allele → R = Red beetles
The allele → B = Blue beetles
Since the gene color shows a codominant allele
The Red Beetle = RR
The blue beetles will be = BB
The heterozygous beetle will be = RB
∴
The punnet square showing the crossing of RB × RR is:
R B
R RR RB
R RR RB
The result shows that we have two red beetles and two heterozygous beetles.
Hence;
The genotypic frequency = 1:1
The phenotypic frequency = 1:1
The sea cools down faster than the land.
A. True
B. False
Answer:
false the land cools faster
Mrs. Essy is type "A" and Mr. Essy is type "O." They have three children named Matthew, Mark, and Luke. Mark is type "O," Matthew is type "A," and Luke is type "AB." Based on this information:
A. Mr. Essy musy have the genotype??
B. Mrs.Essy must have the genotype??
Answer:
A) Mr Essy genotype is OB
B) Mrs Essy genotype is OO
Explanation:
A) Mr Essy genotype is OB
B) Mrs Essy genotype is OO
OO * OB
OO, OO, OB, OB
HELP ASAP WILL GIVE BRANLIST!!! How many moles of water are produced when 6.0 moles of hydrogen gas react with 2.5 moles of oxygen gas?
Balanced equation: 2H2 + O2 → 2H2O (5 points)
2.5 moles of water
3.0 moles of water
5.0 moles of water
6.0 moles of water
Answer:5.0 moles of water
Explanation:
PLZ HELP ASAP will give brainiest
Which statement best explains how humans would benefit from replacing fossil fuels with geothermal energy?
Less cost-effective over time
Lower installation costs than fossil fuel plants
More energy plant locations available
Less pollution than fossil fuel plants
What is the relationship between aquifers and porosity?
Answer:
The pore space of an aquifer is the spaces or voids between the solid material. The porosity of the aquifer is the volume of void space to the total volume, typically expressed as a percentage.
Hamsters are long haired if they have the genotype LL or Ll and they are short haired if they have the genotype ll. A long haired hamster is mated with a short haired hamster. Half of the offspring are long haired and half are short haired. This allows us to conclude that the long-haired parent hamster
Answer:
Has the genotype Ll (heterozygous)
Explanation:
Here are the two punnett squares I did, hope this helps :)
Which point on the graph represents carrying capacity when full?
A.
B.
C.
What happens when the phosphate bonds of ATP break?
A) Acid is neutralized.
B) Energy is stored.
C) Energy is released.
D) An organism becomes sick.
Answer:
C ender is released
Explanation:
the energy stored in the phosphate bonds hold the energy, when the bond breaks the energy stored is released
Answer: C
Explanation:
HELPP
Which of the following is a correct statement about the water molecule?
The hydrogen end is more negative than the oxygen end because hydrogen pulls the shared electrons towards its end of the molecule.
The oxygen end is more negative than the hydrogen end because oxygen pulls the shared electrons towards its end of the molecule.
There is no overall chrage on either end of the water molecule.
Answer:
it should be B
Explanation:
I hope this helps
among cattle having horns is a recessive trait cattle without horns which are called polled cattle are common suppose a horned male mates with a polled female their offspring are polled on maturity two cattle on the f1 generation mated their offspring are a mix of polled and horned cattle
Answer:
Correct
Explanation:
It’s always more likely that the dominant gene will show than the recessive gene.
can i find dna in a dog or tree
Answer:
A dog
Explanation:
10.) What hormone is released due to the rising level of estrogen in the bloodstream?
Answer:
10.) What hormone is released due to the rising level of estrogen in the bloodstream?
A) When the level of estrogen is sufficiently high, it produces a sudden release of LH, usually around day thirteen of the cycle.
-TheUnknownScientist
Answer:
LH hormone is released due to the rising level of estrogen in the bloodstream.
Which is a product of cellular respiration?
1, Methane
2, Water
3,Oxygen gas
4, Mitochondria
Can someone please help me with this? I can’t figure it out.
Please only answer if you know it.
Thank you in advance.
Also it does not appear that clear.
Answer:
1. B, C, F
2. Outside air, nose, lungs, bloodstream, cell
3. Delivery truck, raw material, factory, battery, poison
I hope this helps! Have a great night!
QUICK!!!
What does Earth’s revolution around the sun cause?
Earth's phases
Earth's day & night
Earth's year
Moon day & year
PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Mesozoic, the era contained both large reptiles and small birds/mammals. It's interesting, coming from an evolutionary biology.
Hope this helped!
Answer:
C. Mesozoic Era
Explanation:
It makes sense because Dinosaurs existed during that era and became extinct after that era.
What does the word photosynthesis mean?
Light + energy
Energy + mass
Light + put together
Energy + sugar
Answer:
Hey mate.....
Explanation:
This is ur answer.....
--> Light + Put togetherHope it helps!
Brainliest pls......
Follow me! ;)
cion
Fully explain how speciation occurred on the
Galapagos Islands using 3-4 complete
sentences.
PLEASE HELPP!!
What produces gene flow?
ws
O mating between populations
O mutation
O geographical isolation
O speciation
Answer:
O mutation
Explanation:
please mark this answer as brainliest
The higher the hydrogen ion concentration, the _______ the pH.
please help answer i need to turn this in asap.
Answer:
here is your answer : )
Explanation:
The answer is lower the pH
hope you like the answer : )
The movement of the Earth around its own axis is called _____.
A. extension
B. revolution
C. rotation
Choose the correct answer.''
Answer:
rotation
Explanation:
Earth spins around its axis, just as a top spins around its spindle. This spinning movement is called Earth's rotation. At the same time that the Earth spins on its axis, it also orbits, or revolves around the Sun. This movement is called revolution.
ALGAE --> COPEPODS --> ANCHOVIES --> STRIPED BASS
Which organism in this food chain is most responsible for converting solar energy to chemical energy?
A
anchovies
B
algae
C
copepods
D
striped bass
Answer:
B
Explanation:
only plants convert solar energy to chemical energy.
All members of the Eukarya domain have which of the following characteristics?
Have a nucleus
Are multicellular
Are heterotrophic
Reproduce sexually
Answer:
A. Have a nucleus.
Explanation:
I hope this helps.
please answer !
will give brainliest
Answer:
c
Explanation:
Clouds can block light and heat from the Sun, making Earth's temperature cooler
How are sexual reproduction and asexual reproduction different?
Group of answer choices
A. Asexual reproduction only occurs in multicellular organisms, but sexual reproduction only occurs in unicellular organisms
B. Asexual reproduction produces offspring identical to the parents, but sexual reproduction produces offspring with traits from both parents.
C. Sexual reproduction produces offspring identical to the parents, but asexual reproduction produces offspring with traits from both parents.
D. Sexual reproduction only occurs in multicellular organisms, but asexual reproduction only occurs in unicellular organisms.
Answer:
B
Explanation:
In asexual reproduction, the offspring has identical genes/traits to the one of its parent.
In sexual reproduction, there's a combination of the genes/traits from both parents.
What two nations were at the center of the Space Race in the 1950's Australia and Russia .China and United States .United States and Russia .
Russia and China
Answer:The Space Race was a 20th-century competition between two Cold War adversaries, the Soviet Union (USSR) and the United States (US), to achieve superior spaceflight capability.
Explanation:
i looked it up
The two nations that were at the center of the Space Race in the 1950s should be considered Russia and China.
What is Space Race?The Space Race was the competition held in 20the century that lies between the two Cold War adversaries i.e. soviet union and the united stated for accomplishing the superior spaceflight capability.
Also, it has its origin in the ballistic missile that based on the nuclear arms race.
Learn more about the nation here: https://brainly.com/question/365702?referrer=searchResults
A patient in the hospital is undergoing testing. The patient's brain is sending electrical signals to motor neurons, but the muscles are not moving in response. What could be a likely cause for this? Explain your answer using complete sentences.
Answer:
Damage to interneurons.
Explanation:
The main cause of this situation is the damage occurs to the interneurons which is responsible for sending of instructions. The motor neurons can't receive the instruction from the central nervous system which results no movement of muscles. There must be damaged occur to interneurons because these neurons are responsible for sending instructions from central nervous system so if the information can be passed to the motor neurons so no movement occurs in the muscles.
????????????????????????????????????????? What is the answer to number 2 and 3 I’m really confused
Answer:
2. High
3. Low
Explanation:
4. Sinking air compresses and heats. As air sinks, air pressure at the surface is raised.
3. As air rises, air pressure at the surface is lowered