Pt.I
All living things needs some form of oxygen to live. In talking about a scuba diver, we are talking about a human, who uses their lungs to breathe, and did not develop the ability to breathe under water. Instead, when in a body of water, we tend to hold our breaths until an opportunity arises for us to exchange our carbon dioxide for oxygen.
Take into account the scuba gear. The scuba gear fits the user, and has a number of protection, including the suit counter-balancing any pressure applied by the deep, and the tank providing much needed oxygen to the user during delayed periods within the water.
Pt.II
How does these two systems interact?
Like as a human is breathing on land or even swimming, the human expels carbon dioxide, which forms into "air bubbles" that are then expelled into the water surrounding. The user then draws air from the pressurized air tank, and is able to breathe as such. This allows the user to stay underwater for much longer than just one breathe, and is able to travel farther inside the deep.
Inside this system, the Oxygen is first input into the oxygen tanks, which are then used by the diver. The diver would draw the oxygen from the tank (output), and he will then expel the used air into the surrounding water.
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could I have some help on this pls?
Answer: D
Explanation: over the courses of time, we discover more and more explanations for causes of chemical reactions, biology, etc.
How will the movement of substances be altered in the phloem during spring season? Why?
Answer:
The phloem is responsible for transporting food from leaves to other parts of the plant.
The transport of pholem is bidirectional and changes the movement of particles according to the season. Generally, the transportation occurs in the direction of the source to sink but in spring season the direction is opposite that is from sink to source because the source and sink are n opposite sides. So in spring season, the stem tubers are sources and the growing leaves are sinks.
In this type of transport, a molecule can only pass through a protein channel if it can bind to the channel to change its shape. A. Osmosis B. Key-Mediated Transport C. Channel-Mediated Transport D. Carrier-Mediated Transport
Answer:
Key mediated transport
Explanation:
The molecules across the membrane are transported through active or passive transport. The molecules can pass through protein channels only in the Carrier-Mediated Transport. Thus, option D is correct.
What is Carrier-Mediated Transport?Carrier-Mediated Transport is the active transport that requires energy or other co-transporters to move the molecules across the semi-permeable membrane. The Carrier-Mediated uses the energy-dependent pathway and receptors to transport the molecules.
Carrier-Mediated Transport uses the properties of competition, specificity, and saturation to transport the molecules. The molecule can pass only if they have a specific shape to that of the receptor channel.
Therefore, option D. molecules can pass through protein channels only in the Carrier-Mediated Transport.
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Genes determine the
of organisms.
Answer:
traits
Explanation:
genes determine the traits of an organism
Answer:
Traits
Explanation:
What does big breasts symbolises for woman?
What is natural selection and how does it lead to diversity in organisms?
Answer:Natural selection is the process through which populations of living organisms adapt and change
Explanation: Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others
3.Explain how energy from the sun can eventually be used for active transport in the alimentary canal
(7 marks)
Answer:
See the answer below
Explanation:
First of all, the radiation energy from the sun is converted to chemical energy by green plants in a process known as photosynthesis. The equation of the process is represented below:
[tex]6CO_2 + 6H_20 + (radiation) -->C_6H_1_2O_6 + 6O_2[/tex]
The chemical energy is locked up as carbohydrate in the green plants. When humans or any other animal consumes green plants or any of their products, the carbohydrate is broken down through a process known as respiration. The equation of the process is as below:
[tex]C_6H_1_2O_6 + 6O_2 --> 6CO_2 + 6H_2O + energy[/tex]
The locked-up energy - usually in the form of ATP - becomes available to be used for various metabolic processes in the body, including active transport in the alimentary canal.
In some cases, humans or animals generally do not consume green plants directly. They consume organisms that consume green plants. Such humans are still able to extract some of the energy through respiration and use it for their metabolic processes.
What is the difference between a living specimen and a once-living specimen
In the carbon cycle, carbon dioxide and water are converted to glucose and oxygen by ________. Group of answer choices
Answer:
Photosynthesis
Explanation:
In photosynthesis, solar energy is harvested as chemical energy in a process that converts water and carbon dioxide to glucose. Oxygen is released as a byproduct. In cellular respiration, oxygen is used to break down glucose, releasing chemical energy and heat in the process.
Why is small intestine in herbivores longer than in carnivores ?
Answer:
that is because digestion of cellulose takes quite a long time.
Having a long small intestine helps ensures that the food stays inside the body for a long time, enough for having properly digested the cellulose.
Answer:
cellulose forms the largest part of the herbivore's
food . Digestion of cellulose takes longer time, by the ruminant bacteria that live in the gut of the herbivores. long length of small intestine ensure that the food stays for a longer duration and proper digestion is possible . In case of carnivores , cellulose is not present in the diet ,thus the length of small intestine is smaller
hope it helps u.
Your instructor gives you an unknown organ for you to examine and identify through microscopy. What should you do first with the sample?
a) cut it into sections
b) examine it for artifacts
c) fix it with preservative
d) stain it to enhance contrast
Why is open pit mining so devastating to the environment?
A. It completely removes any topsoil
B. It causes mass erosion of sand
C. It exposes dangerous chemicals buried in the earth's crust
D. It releases a lot of carbon dioxide into the air.
Answer:
B
Explanation:
i think B is the correct
Answer:
It completely removes any available topsoil.
Explanation:
doing the test rn
The rate of heat production is increased by increasing muscle contraction by movement is: Shivering thermogenesis Non- Shivering thermogenesis Vasoconstriction Vasodilation
Answer:
Shivering thermogenesis.
Explanation:
The rate of heat production is increased by increasing muscle contraction by movement is shivering thermogenesis because nerve impulses are transmitted to the skeletal muscles by the hypothalamus which will result to contractions that will produce heat.
Shivering thermogenesis is Contraction-mediated heat production High intensity shivering activates large muscles and produce more glycolysis which is then use as the main source for heat production
Within the solar systme can you name two places might be able to form and survive in extraterestrial environments.
Answer:
well most strong candidates for all of the good satellite habitability were all icy satellites and Jupiter and Saturn—Europa and Enceladus , though if life dose exists in either place then they would probably be confined to there subsurface habitats.
Write a short answer to each question.
If a pendulum makes exactly 60 oscillations in 15 seconds, then
its period is
Answer:
=60÷15
=4 oscillations
Answer:
[tex]\Huge \boxed{\mathrm{0.25 \ s}}[/tex]
Explanation:
[tex]\sf \displaystyle time \ period = \frac{time \ taken}{number \ of \ oscillations }[/tex]
[tex]\displaystyle \frac{15}{60 }=\frac{1}{4} =0.25[/tex]
Compare the energy values of a carbohydrate molecule versus a fat molecule.
Answer:
A fat molecule is stored with a lot of energy where as a carbohydrate molecule is a long chain of carbon atoms.
Carbohydrates and fats are nutrients which provide energy to the body and since calories(kilocalorie) tell how much energy a molecule of a nutrient contain, We can compare their energy values by first changing to kilocalorie.
Now, 1 gram of Carbohydrates contain 4 kilo calories while 1 gram of fat contains 9 kilo calorie of energy.
Let us consider a piece of bread containing
20g of carbohydrate molecule and
14g of fat molecule.
We will see that
carbohydrate will have 20 x 4 =80kcal and
fat will have 14 x 9=126kcal
Even with the carbohydrate having more mass than Fat, Fat ended up havng more energy value than it.See here for related answer: https://brainly.com/question/2006114
Can any kind soul help me ASAP
Answer:
9- C
cellulose strengthens the cell walls present in a plant
enzymes and antibodies are made of proteins
water is the universal solvent.
10- C, all 3
1- cytoplasm contains about 85% of water, which helps in movement within the cells.
2- urine contains 95% of water, and it dissolve urea and salts in it.
3- plasma contains 90% of water, so we can say that water allows transportation of substances in the blood.
The highest energy waves have the_______ wavelength
Answer:
The highest energy waves have the shortest wavelength.
the highest energy wave is gamma rays and it has wavelength is of less than 100 pm
Answer:
The highest energy waves have the shorter wavelength
Explanation:
Wavelength :
The wavelength of a waveform signal conveyed in space or along a wire is the distance between identical points (adjacent crests) in adjacent cycles.
λ=ν/f
where, f = frequency
E = hc/λ
Energy is inversely proptional to wavelength.
Hence, The highest energy waves have the shorter wavelength.
Example - Gamma rays has highest energy and shorter wavelength.
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what is mean by chromosomes?
Answer:
A chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
A chromosome is a strand of DNA that is encoded with genes.
In most cells, humans have 22 pairs of these chromosomes plus the two sex chromosomes (XX in females and XY in males) which make a total of 46.
Explanation:
Answer:
answer is here
Explanation:
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.
Justin B. believes that the temperature lowering during the fall months is what causes the color of the leaves to change. He set up an experiment wherein he placed some plants in 80 degrees rooms and some in 60 degree rooms. He then observed the color of the leaves for a total of 1 month. At the end of the month Justin observed that ¾ of the plants in the 60 degree. what is the control group, independent variable and dependent variable ?
Answer:
Independent Variable: temperature
Dependent Variable: Color of leaves
Control Group: Whole group temperature was at 80 degrees
Independent Variable: temperature
Dependent Variable: Color of leaves
Control Group: Whole group temperature was at 80 degrees
In this way, it should be matched.
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An unwanted and potentially ecologically devastating byproduct of fishing is bycatch, or unwanted marine species caught and killed in the nets. Bycatch can be anywhere from _____% of the overall catch.
Answer:
30% to 70%
Explanation:
what is sequence of steps in photosynthesis how is it different in desert plants and those in temperate regions
Answer:
The steps of photosynthesis are mostly the same for both the plants of desert and temperate regions. The only difference is that desert plants take up carbon dioxide at night and store it as an organic acid inside the body.
Explanation:
A mating between a true-breeding purple-flowered pea plant and a true-breeding white-flowered pea plant would produce a:______.A) True-breeding variety.B) Inbred organism.C) F1 generation.D) P generation.E) F2generation.
Answer:
The correct answer would be - option C) F1 generation
Explanation:
The true breeding varieties are the offspring that have same phenotype as the the parents and contain same allele for a specific trait. When there is mating between two true breeding varieties offspring would be hybrid.
P generations is the generation of the parents in other words, matting in between parents known as p generation whereas the very first generation after p generation is known as F1 generation or filial generation and also the hybrid of P generation.
Thus, the correct answer is option C). F1 generation
One strand of the DNA serves as a direct template for the new strand, and the other strand is pieced together and comprises a new strand. This statement best describes _____.
Answer:
DNA replication is the answer
One strand of DNA serves as a direct template for the new strand, and the other strand is pieced together and comprises the new strand. This statement is related to DNA replication.
What is DNA replication?DNA replication is the process by which genetic materials are copied. In this process, the DNA helix unwinds and each DNA strand opens. Enzymes such as DNA polymerase access the single strand and add complementary bases to the already existing DNA or parental DNA.
The DNA replication takes place from the 5' end to the 3' end. The DNA elongation continues from 5' to 3' taking the 3' to 5' parental template DNA strand. This strand is called a "leading strand," as the newly synthesized DNA is formed continuously. The other template DNA strand of parental DNA, with 5' to 3', doesn't elongate continuously in replication. Patches of short DNA are formed. This is called a lagging strand.
Hence, one strand, the leading strand, is formed continuously while the lagging strand is pieced together. This statement best describes DNA replication process.
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Which structures in the cell membrane allow the cell to communicate with and interact with its environment?
A. Phospholipids
B. Cholesterols
C. Proteins
D. Carbohydrates
A preparation that "teaches" the immune system to recognize a disease-causing agent without actually causing disease is termed a(n):__________.
A. antibiotic.
B. virus.
C. antiviral.
D. vaccination.
E. injection.
Answer:
c. Vaccination
Answer:
D. Vaccination.
Explanation:
Vaccination is a preparation that teaches the immune system to recognise a disease-causing agent without actually causing disease is termed a vaccination.
For example:
The coronavirus vaccine won't expose us to the coronavirus yet the it helps the immune system prepare to fight the virus in advance just in case the person gets infected with the disease.
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The muscles of a recently deceased human can remain in a contracted state, termed rigor mortis, for several hours, due to the lack of
Answer:
Because of the remaining actin-myosin bonds.
Explanation:
After death, the body can still continue to produce energy as ATP and that ATP interacts with the myosin within the muscles, causing the muscles to remain contracted and tense. This is what causes rigor mortis, the body is unable to break the bonds between actin and myosin.
I hope this answer helps.
Answer: ATP NEEDED TO BREAK ACTIN-MYOSIN BONDS
Explanation: ATP (Adenosine Triphosphate) is the substance that allows energy to flow into the muscles,this energy helps the muscle to contract and work well so without this chemical (ATP), energy can't flow into the muscles and the muscle in-turn cannot function or contract.
When an individual dies,the body stiffens as a result of loss of Adenosine Triphosphate.
The muscles then stays in a contracted state until ATP becomes binded to myosin, thereafter, myosin and actin filaments will be released from one another.
At which stage of the scientific process would a scientist look at experimental data from other scientists to set up a new experimental study?
a. observing
b. testing a hypothesis
c. evaluating results
d. forming a hypothesis.
Answer:
D
Explanation: press that thank you for me
The construction of a hypothesis is the stage of the scientific process that would involve a scientist looking at experimental data from other scientists in order to set up a new experimental study. Thus, the correct option is D.
What is the Scientific process?The scientific process may be defined as the complete methodology of intentionally deriving facts through the process of testing and experimentation of data.
The scientific process involves numerous steps such as formulating an observation, constructing a hypothesis, determining a prediction, conducting an experiment, and finally analyzing the outcome/results.
The analysis of the scientific data of other scientists is an approach to gathering external information based on the same topic categorized under a methodology of the scientific process.
Therefore, the construction of a hypothesis is the stage of the scientific process that would involve a scientist looking at experimental data from other scientists in order to set up a new experimental study. Thus, the correct option is D.
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The zebra mussel is a highly invasive species that was accidentally introduced to the Great Lakes region of the United States in the 1980s. The map below shows the distribution of zebra mussels in 2010. • Zebra mussel location What is the primary reason the large-scale spread of zebra mussels concerns scientists? Zebra mussels out-compete native mussel species. © Zebra mussels are a freshwater species. Zebra mussels are a desired food for humans. Zebra mussels are eaten by some fish and birds.
Answer:
Although the map showing the distribution of mussels in not included but the question can be answered based on general understanding of invasive species. The answer is:
Zebra mussels out-compete native mussel species.
Explanation:
Invasive species in biology refers to the species of an organism that is foreign to a particular area/location with an ability to grow very rapidly to the point of being a threat to the local species of organisms that are native to the area.
This is the case of the Zebra mussel, which was accidentally introduced to the Great Lakes region of the United States in the 1980s. It is a major concern for scientists (like every other invasive species) because of its potential to outgrow and outcompete native mussel species i.e mussel species naturally found in the lake.
Answer:
community interaction
Explanation: