Answer:
Transport in both plants and mammals is by a system of specialised tubes. ... In mammals this forms a circulatory system of arteries, capillaries and veins. In flowering plants, transport is not circulatory and occurs in microscopic xylem and phloem.
Explanation:
Mammals:
ºSpecialised tubes - arteries, capillaries and veins.
ºAll tubes are composed of living cells.
ºThe concentration of substances transported is controlled (see homeostasis). The ºconcentration of the substances being transported is not controlled.
ºThe heart controls the circulatory system. The heart is controlled by the nervous system.
ºThe rate of flow is moderate and is regulated by vasoconstriction and vasodilation.
ºUses water as a medium in which to transport substances (it is a good solvent, it has a high specific heat capacity, has good surface tension but is not viscous, and is unreactive).
º The substances being transported are: respiratory gases, glucose, amino acids, fatty acids, glycerol, vitamins, minerals, hormones.
Plants:
º Specialised tubes - xylem vessels and tracheids and phloem sieve tubes.
º Some tubes are composed of living cells, e.g. phloem. Others are composed of dead cells, e.g. xylem.
º The concentration of the substances being transported is not controlled.
º There is no such control in plants.
º The rate of flow in the xylem and phloem is quite slow. The rate of flow in the xylem is controlled by external factors via the stomata (e.g. temperature, wind, humidity).
º Uses water as a medium in which to transport substances.
ºSubstances being transported are: sucrose, amino acids, fatty acids, glycerol, vitamins, hormones (in the phloem) and minerals and water (in the xylem). Respiratory gases are not transported by this system but move via a series of inter-connecting air spaces.
 now that you know the bacteria in each tank drag the tanks to put them in the correct order
Answer:
1st ammonia nitrifying
2nd nitrite nitrifying
3rd denitrifying
Explanation:
If an organism's diploid number is 14. its haploid number is...
Answer:
If an organism's diploid number is 14. its haploid number is...
Explanation:
Answer:
7
Explanation:
14 ÷ 2
a haploid is half the diploid
so the answer is 7
whitch of the following nutrients is primarily used for building and repairing of demaged cells and tissues
Answer: protein ..i hope this helped!
Explanation: protein is a nutrient used to make and repair our body cells like blood and muscle cells.
Answer:
Explanation:
he is correct
Identify part A, B and C. What is the function of part B?
Pleaseeeeeeeeee help and actualy answer
Answer:
Yes
Explanation:
The reason is because lets say both parents traits are fully dominate as in BB and BB, there is no way they can be recessive, same thing if mom is BB and dad is bb, but if mom is Bb and dad is Bb then their is a 25% chance of having a recessive trait.
List and explain the 3 paths natural selection can take.
Answer:
1. Stabilizing Selection
2. Directional Selection
3. Disruptive Selection
Explanation:
Stabilizing Selection
This type of natural selection occurs when there are selective pressures working against two extremes of a trait and therefore the intermediate or “middle” trait is selected for. If we look at a distribution of traits in the population, it is noticeable that a standard distribution is followed:
Example: For a plant, the plants that are very tall are exposed to more wind and are at risk of being blown over. The plants that are very short fail to get enough sunlight to prosper. Therefore, the plants that are a middle height between the two get both enough sunlight and protection from the wind.
Directional Selection
This type of natural selection occurs when selective pressures are working in favour of one extreme of a trait. Therefore when looking at a distribution of traits in a population, a graph tends to lean more to one side:
Example: Giraffes with the longest necks are able to reach more leaves to each. Selective pressures will work in the advantage of the longer neck giraffes and therefore the distribution of the trait within the population will shift towards the longer neck trait.
Disruptive Selection
This type of natural selection occurs when selective pressures are working in favour of the two extremes and against the intermediate trait. This type of selection is not as common. When looking at a trait distribution, there are two higher peaks on both ends with a minimum in the middle as such:
Example: An area that has black, white and grey bunnies contains both black and white rocks. Both the traits for white and black will be favored by natural selection since they both prove useful for camouflage. The intermediate trait of grey does not prove as useful and therefore selective pressures act against the trait.
A helpful shortcut our brain makes in scene recognition is to assume that lighting comes from:
Answer: A. Above
Explanation:
Scientists believe that in order for humans to see things, the brain has to make certain assumptions which are done based on previous scenes that it has interpreted before because the eyes do not provide it with complete data. .
One of those assumptions is that light comes from above which is why the shape of a picture can change depending on the lighting in it.
HELP!!!!!!!!!!!!!! And go check out my other questions
Use the following questions to write your conclusion to your lab report.
What did you learn from doing this lab? (Did the volcano have an effect on the ability of a predator to catch their prey? What might this mean for future generations? Include numbers from your data tables to show these changes.)
How could you make the lab better?
Answer:
WHat??
Explanation:
FILL IN THE BLANK!!!
genotype is the____pair of alleles (TT)____of an organism. And phenotype is the____apperence__of an organism
Answer:
THIS IS IT
Explanation:
The genetic makeup of an organism (ex: TT). Phenotype, The physical ... from each parent). This pair of alleles is called a genotype and determines the organism's appearance, or phenotype. ... A Punnett square can be used to predict genotype and phenotypes of offspring from genetic crosses
I was wondering if my answer was right ?
Explanation:
yes the 4th one is right so yes the one you have is right
True Or False urgebt
Answer:
The answer is true
Explanation:
true
Which sediment would have the slowest rate of deposition?
a round sediment
O a very large sediment
an irregularly shaped sediment
O a high-density sediment
Answer:
C. An irregularly shaped sediment
Explanation:
Deposition is the settling of sediments within respective basins of deposition.
Irregularly shaped sediments are the slowest to settle within a basin this is due to the frictional resistance of their surface.
As these particles hits the water, the liquid drag on their edges is very great and prevents swift settling.
A. A high density sediment and a large sediment will have a fast settling time.
B. Rounded sediments will impose no friction on the water and they fall through the liquid very fast.
Answer:
the answer is C. an irregulary shaped sediment
Explanation:
hope this helps!
Which of the following substances is not a fossil fuel?
a.
coal
c.
gas
b.
oil
d.
wood
Answer:
D, wood.
Explanation:
Wood is not a fossil fuel.
Hope this helps!
a person suffering from cold doesn't get proper test why
Give an example of how structure and function are related on the cellular level.
Answer:
Function and structure are related, because of a certain structure a living thing make contain makes the object function the way it does. ... The relationship of a structure and function is the structuring levels from molecules to organism ensure successful functioning in all living organism and living system
Explanation:
Describe a DNA molecule and its shape
Answer:
DNA is a long molecule, made up of two strands twisted together to make a spiral known as a double helix.
I NEED HELP ITS DUE RIGHT NOW PLEASE ( biology question !!! )
Answer:
A is the correct answer.
Which of the following is true about moss sporophytes?
a. Sporophytes perform photosynthesis. C. Sporophyttes contain a single spore.
b. Sporophytes depend on the gametophyte for d. Sporophytes are very large.
nutrients.
Answer: sporophytes photosynthesise, particularly when immature, but depend on gametophytes for at least 50% of nutrient requirements
Explanation: In mosses, the gametophyte generation is the dominant generation unlike in higher plants. The diploid sporophyte generation produces several spores per capsule.
Answer:
c
Explanation:
What is the meaning of life? (I’m Giving out 35 points)
Answer: do what makes you happy
Explanation:
Answer:
to live life to the fullest and appreciate the little things that make you happy and follow your dreams and just accept all the bad days because life isn't perfect and neither is everyone
Which statement describes a law based on a tested hypothesis explains how the process occurs describes something about the natural world subject to change as new evidence is discovered
Answer:
based on a tested hypothesis
Explanation:
Laws are generally based on tested hypotheses.
Theories are first derived from repeatedly tested and proven hypotheses. Scientific laws are derived from theories that have been proven to be true over a wide range of phenomenon. Hence, laws are overwhelmingly proven facts that cannot be changed.
Scientific laws are internally consistent, compatible with evidence, and are testable against a wide range of phenomenon. However, they can be reviewed as more evidences emerge that have not been known before.
1. Describe the shape of a DNA molecule.
Answer:
Explanation:
If you think of the double helix structure as a ladder, the phosphate and sugar molecules would be the sides, while the bases would be the rungs.
Answer:If you think of the double helix structure as a ladder, the phosphate and sugar molecules would be the sides, while the bases would be the rungs.
HELP ITS DUE RIGHT NOW PLEASE !!!
Methylmercury biomagnifies in an ecosystem, meaning its concentration __________ as it moves through each higher trophic level.
A. equalizes
B.does not change
C. decreases
D. increases
Answer:
D - Methyl Mercury Increases
Explanation:
The word Biomagnification has a simple explanation:
To magnify is to make bigger, meaning that the substance in question is becoming more abundant.
The "bio" part of this word is referring to the fact that it is a biological substance you are dealing with.
Question: "Methylmercury biomagnifies in an ecosystem, meaning its concentration __________ as it moves through each higher trophic level."
Answer: "The concentration of the methylmercury increases as it moves through each higher trophic level. Hence, the methylmercury biomagnifies in the ecosystem. So, based on the options given prior to the question above, Option D) increases would be your best bet."
Second part:
17. What are gremline cells
18. How is mitosis different from meiosis?
Answer:
just see explainnation
Explanation:
what is gremline cells tell me and the teach me what is mitisis ok and then teach me meiosis ok the I will tell u answer of thes question
can someone pleasee answer thiiisss pleasee
Answer:
Hi how are you doing today Jasmine
Where will you find permafrost? tall grass prairie savanna chaparral tundra
Answer:
Where Is Permafrost Found? About a quarter of the entire northern hemisphere is permafrost, where the ground is frozen year-round. It's widespread in the Arctic regions of Siberia, Canada, Greenland, and Alaska—where nearly 85 percent of the state sits atop a layer of permafrost.
Explanation:
hope this helps
Is glucose more or less complex than the rest of the biomolecules? Explain.
Answer:
Less complex.
Explanation:
Glucose is both a monomer and simple sugar.
Glucose is a monosaccharide. It is a biomolecule. It is less complex than the rest of the biomolecules, such as proteins, lipids, and other complex carbohydrates like glycogen.
What is a biomolecule?
Biomolecules are present inside the cell. Carbohydrates, proteins, and lipids are some examples of biomolecules. Carbohydrates are divided into monosaccharides, disaccharides, and polysaccharides.
A monosaccharide has a single unit. Examples are glucose, fructose, etc. A disaccharide consists of two units. An example is maltose. Maltose is made up of two units of glucose connected by a glycosidic bond. An example of a polysaccharide is glycogen. Multiple sugar units are connected by glycosidic bonds to form glycogen. It is a storage product.
Carbohydrates are present on our cell surface as peptidoglycan. Protein is a biomolecule that is made up of amino acid monomers. They make the different structures of a cell, such as actin fibers, etc. Lipid is made up of hydrogen and carbon. Examples are cholesterol, phospholipids, etc.
Hence, in comparison to all other biomolecules, glucose is the simplest.
To learn more about biomolecule, refer to the following link:
https://brainly.com/question/12299485
#SPJ2
How will water volume, incline gradient, and temperature affect the energy
of a stream?
Answer: Water Volume: The volume of water(discharge) in a stream affects the energy(velocity) of that stream. As the volume of the water in the stream increases, the velocity increases. ... Incline gradient: The incline gradient is also known as the slope of the stream.
Explanation:
Condensation occurs in clouds. Explain how and then explain what happens with the clouds gain too
much condensation