Answer:
maybe if you payed attention in class, you would know the answer.
Explanation:
10. Use the theory of evolution to explain the observation that there are no tuskless males in the
park. WHY do males retain their tusks, when 50% of females lost them.
Type Here
Based on the theory of evolution, poaching of males for their tusk exacted a pressure on the elephant population which made more tuskless males to survive more than males with tucks as a result of natural selection.
Also, tucklessness as a trait is sex-linked, this explains why 50% of females lost their tusks why the males retain theirs.
Recall:
The theory of evolution describes the change that occur overtime through natural selection, whereby, offspring that are "fitter" are reproduced.Those that lack the fitness to survive produce fewer offspring than will survive.Male elephants are known to have tusks. However, poaching of elephants with tusks have exacted the pressure of natural selection on the population of elephants in the park.
The few tuskless males that are left surviving therefore produce more offspring as they pass the gene of tucklessness to their offspring. Over a long time, more tuckless males emerge while males with tusks will become almost non-existence as a result of natural selection.
A study showed that most females elephants have no incisors which suggests that the trait for tucklessness is sex-linked. This explains why 50% of the females lost their tusks and males retain theirs.
In summary, based on the theory of evolution, poaching of males for their tusk exacted a pressure on the elephant population which made more tuskless males to survive more than males with tucks as a result of natural selection.
Also, tucklessness as a trait is sex-linked, this explains why 50% of females lost their tusks why the males retain theirs.
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What does dilation, and therefore increased permeability, of the capillaries during the inflammatory response allow to happen
Answer:
During the inflammatory reaction and cytokine / cell diffusion, a chemical compound called nitric oxide, known as NO, is released. This chemical compound increases the permeability of the vessels, that is, the separation between the endothelial cells of the vessels to promote diffusion, inflammation and diapedesis.
Explanation:
Another factor that promotes permeability of the vessels are pro-inflammatory cytokines and chemicals released by antigen-presenting cells.
A plant has 3 parts, parallel veins, no main tap root, and the endosperm is separate.
Is this plant a monocot or a dicot?
Why is it important for the daughter cells to divide a second time In meiosis?
Answer:
The second time the daughters cells divided haploid cells form and then migrate to other haploid cells in the process of fertilization.
Explanation:
Daughter cells divide a second time In meiosis because it creates cells that are destined to become gametes.
What is Meiosis?This is the type of cell division common in reproduction and gamete production and produces four unique daughter cells.
The daughter cells divide twice because it creates cells that are destined to become gametes as its union during fertilization would result in offspring with twice the normal number of chromosomes.
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Hypertonic means...
A. High in solute
B. Low in solute
C. Equal in solute
D. Hyperactive
Answer:
D Hyperactive
Explanation:
Answer:
A.High in solute
Explanation:
Ok,In the reasoning of the word hyper,this brings up a conclusion that it means something high as in raised level thus the term being made to be hypertonic then it refers to the whole term meaning it is a solute of higher or high solute concentration.
List the characteristics of plants
Answer:
Plants are multicellular eukaryotes. They have organelles called chloroplasts and cell walls made of cellulose.
Plants also have specialized reproductive organs.
Almost all plants make food by photosynthesis.
Life as we know it would not be possible without plants.
plssss help i’m timed
Helpppp meeeeeee plssss
Answer:
ok
Explanation:
ok thats the answer
A complete living thing, for example
a rabbit or an oak tree, is
A. a biome.
B. an organelle.
C. an organism.
D. a population.
Lihts Reserve
Answer:
C
Explanation:
a single living thing is an organism
What amazing thing can plants do with carbon dioxide and water molecules? How?
Answer:
In the process of photosynthesis the plants make their own food by using carbon dioxide, water, sunlight and soil.
The energy from sun light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen.
Explanation:
Hope this helps you
Crown me as brainliest:)
What is a list of combination biomolecules?
Answer:
Biomolecules include large macromolecules (or polyanions) such as proteins, carbohydrates, lipids, and nucleic acids, as well as small molecules such as primary metabolites, secondary metabolites and natural products. A more general name for this class of material is biological materials.
Explanation:
The _____ temperature and the _____ pressure on Earth's inner core force it to remain a solid. (4 points)
Answer: high and low
Explanation: high and low
Answer:
Low and high
Explanation:
How many protons are in the nucleus of an atom with an atomic number of 12?
I hope it helps for you
{ pls help me brainiest }
Which type of sensory receptors monitor position and movement of the body?
A. Photoreceptors
B. Chemoreceptors
C. Proprioceptors
D. Exteroceptors
Answer:
C. Proprioceptors
Explanation:
Firstly option A. Photoreceptors - Is responsible for our vision and is a subcategory for option D. Exteroceptors.
External receptors that respond to stimuli from outside the body are called exteroceptors.
Option C. is the correct answer because Proprioceptors is the sense of self-movement and body position. It sometimes may also be referred to as our sixth sense.
Hope this Helps :)
A type of cell division that results in two daughter cells that are exactly the same as the original cell is _________.
A. osmosis
B. mitosis
C. diffusion
In your own words, What is osmosis?
Answer:
Osmosis is the movement of water molecules through a semi-permeable layer from high concentration to low concentration until equilibrium.
Explanation:
15. A man with normal color vision marries a woman with normal color
vision. BUT Mom's father was colorblind, and she is a carrier. If this couple
has a son, what is the chance he is colorbling?
*
0% of boys are colorblind
25% of boys are colorblind
50% of boys are colorblind
100% of boys are colorblind
Answer:
0%
Explanation:
Colorblind is usually a recessive trait therefore there is no situation, unless the father has a colorblind gene, that the child would be colorblind.
A base is best defined as a substance that:
O A. both captures and releases hydrogen (H+) ions in a s
B. removes hydrogen (H) ions from a solution.
C. adds hydrogen (H-) ions to a solution.
O D. stays in a solution whenever it contains hydrogen (H-)
Answer:
B
Explanation:
a base is a negatively charged anion capable of reacting with anion species such as H ions
Q1: What two requirements must food meet in order to be considered a
food molecule
Answer:
it would be
Explanation:
i hope this helps
How might pandemic flu impact the functioning of society?
Schools may need to be closed
Vaccine manufacturers may shut down.
Workers may need to use their sick leave time.
Healthcare facilities may become overwhelmed.
Answer:
D. ?
Explanation:
Kinda whats going on rn lol
Hope this helps!
-BB
Answer:
Health facilities may become overwhelmed. If this is multiple choice picking I would also choose "Schools may need to be closed" and "Workers may need to use their sick leave time."
Explanation:
It's a bit self explanatory, no?
starch and water molecules in potato cells are stored in what organelle?
Potatoes synthesize and store starches in organelles is called amyloplasts.
What is amyloplast?Amyloplast is a type of plastid that formed as well as store starch. They are commonly found tubers (potatoes) and bulbs. Amyloplasts are also helping plant roots grow in a downward direction.
So we can conclude that Potatoes synthesize and store starches in organelles is called amyloplasts.
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What is the name of the tube that our hair grows from?
the release of.one phosphate group from ATP powers the reactions in the cell. Which phosphate is the one released from ATP
Answer:
Hey sorry, Considering this was ages ago did you finish this? what was the answer? Its too late to comment but can you rate the answer (like if it's the first option [which is #2] rate it 2 stars or if its C rate this 1 star, so on and so forth)
Explanation:
Sorry
A phosphate that is released from ATP is the third one. Thus, the correct option for this question is D.
What is ATP?ATP stands for Adenosine triphosphate. It may be defined as a type of high-energy compound that significantly delivers energy to the cells for the accomplishment of metabolic activities. Therefore, it is known as the energy currency of the cell.
The removal or elimination of the phosphate group from ATP to yield ADP significantly liberates energy. This released energy is captured or consumed by the cells of living organisms in order to derive energy for the completion of metabolic activities. While the adjoining of these phosphate groups significantly required energy.
Therefore, the third phosphate is the one that is released from ATP. Thus, the correct option for this question is D.
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HELP ME. don't know what this means
Answer:
1. Leaf
2. Chloroplasts
3. Thylakoids
4. Chlorophyll
Explanation:
Hope that helps!
A mutation has occurred that results in a drastic reduction in mRNA transcription from very high levels to low levels. What region is likely responsible?
Answer:
Enhancer region
Explanation:
An enhancer is a cis-regulatory DNA region that binds to transcription factors in order to stimulate transcription. Enhancer regions are localized both upstream and downstream of the gene whose transcription regulates, at a variable distance ranging from 1 to 100 kilobases (kb) from the transcription start site. The first enhancer to be identified was found in an intron of the immunoglobulin gene. Conversely, a silencer element is a DNA region that binds to proteins known as repressors in order to suppress transcription.
PLEAS HELP!!! Clara had to choose between making an animal or a plant cell. Which type of cell does her model represent?
a. plant
b.animal
Describe the function of two structures identified in Clara's cell, other than the mitochondria.____
Identify two cell structures that are missing from Clara’s model. ____
Describe the function of each cell structure you identified in the question above. ___
B. Animal cell, I believe so because of the shape of the cell and it does not clarify if it has a cell wall, if it has a cell wall and mehran then it's a plant cell if it only has a cell membrane in them it's an animal cell
Clara's model represents an animal's cell. The Golgi body and ribosome are missing. Hence, option B is correct.
What are the functions of different cell organelles?The gel-like substance that fills a cell is called cytoplasm. It serves as a catalyst for chemical reactions. It offers a foundation for other organelles to function within the cell. A cell's cytoplasm is where all of the processes for cell division, growth, and replication take place.
The nucleus' principal jobs include storing the cell's DNA, preserving its integrity, and assisting with transcription and replication. The main function of the nucleolus is to facilitate and assemble ribosomes. The plasma membrane is the outer covering of the cell, which provides it protection and allow the transportation of nutrients and other essential material into the cell.
In Clara's model cell wall is absent. Hence, option B is correct.
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If a more concentrated initial solution of sodium bicarbonate was used in beaker C, would it require more or less bicarbonate to neutralize the acid? Why?
Answer:
It would require less bicarbonate to neutralize the acid.
Explanation:
Sodium bicarbonate NaHCO3 is a, partly soluble sodium salt that decomposes in water to form a weakly basic buffer solution. It dissociates in water resulting in bicarbonate anions HCO− , sodium ions Na+ and H+.
2 NaHCO3(s) → Na2CO3(s) + CO2(g) + H2O(g)
Buffer solutions exist in equilibrium. In a solution with a strong acid and the conjugate base react, while the other carbonate ions dissociate to form carbonic acid, shifting the equilibrium of the solution back towards a balanced state.
HA ⇄ H+ + A-
Due to its buffering ability i.e. how well it maintains equilibrium, less bicarbonate would need to be added later on to neutralize the acid.
Less quantity of bicarbonate is needed for the neutralization of acidic solution.
Function of bicarbonatesIt require less bicarbonate to neutralize the acid because of its concentrated solution. If a more concentrated solution of sodium bicarbonate is used to neutralize the acid, lower quantity of it will be enough to neutralize it. Sodium Bicarbonate acts as a buffer which is commonly used for maintaining the pH of the solution.
Effect of BufferIt acts as a base when it is put in the acidic solution so helps in neutralizing the solution so we can conclude that less quantity of bicarbonate is needed for the neutralization of acidic solution.
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PLEASE HELPPP!!!!
Choose the best explanation of a partial solar eclipse?
A. The earth only partially covers the sun during the eclipse
B. The moons phase is full and blocks out most but not all of the sun
C. During a new moon phase there is usually a partial but not total eclipse
D. The moon only partially covers the sun during the eclipse
Answer:
The best explanation for a partial solar eclipse is that moon only partially covers the sun during the eclipse (option D).
Explanation:
A solar eclipse occurs when the moon stands between the sun and the earth, which happens when the moon is near the plane of the ecliptic, that is, the point where the orbits of the earth and the sun intersect.
A partial solar eclipse occurs when the moon partially covers the sun, which depends on the observer's point of view on the earth and his geographical location.
The other options are not correct because:
A. If the earth stands between the sun and the moon, lunar eclipses occur.
B and C. During a solar eclipse it is not possible to see lunar phases, which occur when the sun's rays are reflected off the satellite.
Answer:
for a little easier answer from the other one on this question basically the answer is D.
Explanation:
(PLZ help me ill give brainiest)
Which of the following explains why anatomy and physiology are closely related?
A. Biological systems are organized in a hierarchical manner.
B. These disciplines have implications in diverse medical and scientific fields.
C. Humans are complex living beings, with multiple organ systems required for human life.
D. Structure and function are interdependent.
please help i give 48 points !!!which correctly lists the three layers in which water moves easily
A: ROCK, CLAY ,GRANITE
B: SOIL,ROCK,ORGANIC LAYER
C: CLAY,ORGANIC LAYER, GRANITE
D: GRANITE, ROCK, SOIL
soil, rock, organic layer
Explanation:
Permeability is the ability of a layer of rock to transmit fluid such as oil or water
The factors that affect the permeability of a rock layer includes the sizes of the rock particles, the ratio of the available voids to the solid mass of the rock, the presence of trapped air and the presence of organic matter
Rocks such as gravels, and sparingly cemented sands have high permeability
The most impermeable of the options are granite and clay which for granite has large particle mass and contain no voids while clay has very fine particles packed together with little room for water
Therefore, water moves easily between layers soil, rock, organic layer
Answer:
SOIL, ROCK, ORGANIC LAYER
Explanation:
Edge 2020, hope this helps :)
