Which of the following describes plant cells but not animal cells?
A. The nucleus contains the chromosomes
B. The ribosomes assist in protein synthesis
C. Plastids store starch made during photosynthesis
D. mitochondria produce energy through respiration
Answers
Answer:C. Plastids store starch made during photosynthesis
The statement that describes plant cells but not animal cells is the plastids that store starch made during photosynthesis. Thus, the correct option for this question is C.
What is Photosynthesis?Photosynthesis may be defined as the process through which green plants and some photosynthetic algae synthesize their own food in the form of glucose with the help of carbon dioxide and water in the presence of sunlight.
Animal cells do not perform photosynthesis so they do not have plastids. Plastid is a type of cell organelle which is specific to only plant cells that significantly store starch that is synthesized during the process of photosynthesis.
Animal cells have cell organelles like mitochondria, endoplasmic reticulum, etc. while chloroplast and plastids are specific to plant cells.
Therefore, the statement that describes plant cells but not animal cells is the plastids that store starch made during photosynthesis. Thus, the correct option for this question is C.
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Related Questions
What can you conclude is one limitation of the arrangement of glucose molecules that gives chitin and cellulose their strength?
Answers
Answer:
It cannot be digested and, therefore, provides little nutritional value
Which correctly describes the role of histones in eukaryotic cell division?
1.histones copy the dna before division begins.
2.histones protect the ends of chromosomes.
3.histones connect sister chromatids.
4.histones keep the dna compact and organized.
Answers
Histones keep the DNA compact and organized describes the role of histones in eukaryotic cell division.
What is eukaryotic cell?Eukaryotes are creatures with nuclei in their cells. Eukaryotes include include animals, plants, fungi, and many unicellular creatures. They are members of the Eukaryota or Eukarya group of organisms, which is one of the three domains of life. The other two domains are Bacteria and Archaea. Eukaryotes are creatures with nuclei and other membrane-bound organelles. Eukaryotic creatures include all mammals, plants, fungi, and protists, as well as the majority of algae. Eukaryotes can be single-celled or multicellular in nature. Other membrane-bound organelles seen in eukaryotic cells include mitochondria and the Golgi apparatus. Chloroplasts can be found in plants and algae. Prokaryotic cells may contain primitive organelles.
Here,
Histones maintain DNA compact and ordered, which characterizes histones' role in eukaryotic cell division.
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The frequency of two alleles in a gene pool is 0.17 (A) and 0.3 (a.) assume that the population is in Hardy-Weinberg equilibrium calculate the percentage of heterozygous individuals in the population.
28% 1% 31% or 46%
Answers
The correct answer based on the calculation would be approximately 10.2% heterozygous individuals in the population. The correct answer is 10%.
To calculate the percentage of heterozygous individuals in a population in Hardy-Weinberg equilibrium, we can use the formula 2pq, where p represents the frequency of one allele (A) and q represents the frequency of the other allele (a).
Given that the frequency of allele A is 0.17 and the frequency of allele A is 0.3, we can calculate:
p = 0.17
q = 0.3
Now, we can substitute these values into the formula:
2pq = 2 \(\times\) 0.17 \(\times\) 0.3 = 0.102
Therefore, the percentage of heterozygous individuals in the population is 0.102 \(\times\) 100 = 10.2%.
Based on the given answer choices, none of them exactly match the calculated value.
The closest option is 1%, but it does not match the calculated percentage accurately. It's possible that there may be a typographical error or slight deviation in the provided answer choices.
The correct answer based on the calculation would be approximately 10.2% heterozygous individuals in the population.
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Question
The frequency of two alleles in a gene pool is 0.17 (A) and 0.3 (a.) assume that the population is in Hardy-Weinberg equilibrium calculate the percentage of heterozygous individuals in the population.
28% 10% 31% or 46%
-yraxin is up along the page.) (a) What in the projectik's velooty at the tigheet psint of its trajectory? acouracv ta miniesiat roundert ence nes Srection " couratedociowise from the +x axis Cb) What is the straighitine detanose froms where the brojectie was lasched to whiere it hins its tar?t? Wour tesponse differs from the correct anseer hy mise than tónk. Double ered your cakouliona. m SERCP11 3.2.P.017. thank in ay alang the pajer) diectian X.
Answers
The projectile's velocity at the tightest point of its trajectory is 30.1 m/s, and the straight-line distance from where the projectile was launched to where it hits its target is 36.37 meters.
"What is in the projectik's velocity at the tightest point of its trajectory?" is: We have to utilize conservation of energy to find the speed at the tightest point of the projectile's trajectory. At the tightest point of the trajectory, all the energy is in the form of kinetic energy. We have gravitational potential energy (GPE) and kinetic energy (KE) at the initial point. The GPE is turned into KE as the projectile is released from the initial position, and the projectile's velocity (speed) is calculated by finding the kinetic energy (KE) at the tightest point in its trajectory. Therefore, the projectile's velocity at the tightest point of its trajectory is 30.1 m/s.
"What is the straight-line distance from where the projectile was launched to where it hits its target?" is:The path taken by a projectile is a parabolic curve in two dimensions. As a result, the projectile will not hit its target unless it is aimed precisely. So, the projectile has a range, which is the maximum distance it can travel in a horizontal direction. The range of a projectile is given by the formula: R = (v² sin 2θ) / g Where: v is the projectile's initial velocityθ is the angle of launching is the acceleration due to gravity from the given diagram, the angle of launch is 30°.
So, the range of the projectile is: R = (30² sin 60°) / (2 * 9.8) = 31.6 meters
However, this is the total horizontal distance travelled by the projectile from the launch point to the point where it hits the target. To find the straight-line distance between the two points, we need to use the Pythagorean theorem.Let's consider the vertical distance between the launch point and the point where the projectile hits the target. This distance is equal to the maximum height reached by the projectile.
This height can be found using the formula: h = (v² sin² θ) / (2g)
Substituting the given values, we get: h = (30² sin² 30°) / (2 * 9.8) = 22.55 meters
Now, using the Pythagorean theorem, we can find the straight-line distance between the launch point and the point where the projectile hits the target. d² = R² + h²d² = (31.6) ² + (22.55) ²d ² = 1320.56d = √ (1320.56) = 36.37 meters
Therefore, the straight-line distance from where the projectile was launched to where it hits its target is 36.37 meters.
The projectile's velocity at the tightest point of its trajectory is 30.1 m/s, and the straight-line distance from where the projectile was launched to where it hits its target is 36.37 meters.
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What are some 5 examples of thallium?
Answers
Answer:
It exists in trace concentrations in the earth's crust. It is imported for use in electronics, low temperature thermometers, optical lenses, and counterfeit costly jewels. It is also used in some chemical reactions and medical operations.
Explanation:
Peter loves music. He believes that he does his homework better and faster when he listens to music. His parents say that music is distracting when studying.
Answers
Answer:
Peter should be able to listen to music.
Explanation:
Peter should be allowed to listen to music because if he insists that it helps him to focus, then so be it.
Use the same article to examine the movement of the continents.
Theory of Plate Tectonics
Which phrase describes the movement of the continents?
only coming together
only moving apart
coming together and moving apart
not moving; always in one solid land mass
Answers
Answer:
Coming together and moving apart
Explanation:
I'm taking the assignment rn and i got it right Good Luck
Answer: third option on edge
Explanation:edge
Find the solution of the given initial value problem: (a) y
′
−y=2xe
2x
,y(0)=1 (b) y
′
+(cotx)y=2cscx,y(π/2)=1
Answers
(A) The answer to the initial value problem is given by \(\(y = (x^2 + 1)e^x\)\), where \(\(y' - y = 2xe^{2x}\)\) and \(\(y(0) = 1\)\).
(B) The resolution to the initial value problem can be expressed as \(\(y = \frac{2x - (\pi - 1)}{\sin(x)}\)\), where \(\(y' + \cot(x)y = 2\csc(x)\)\) and \(\(y\left(\frac{\pi}{2}\right) = 1\)\).
(A) To solve the initial value problem:
\(\[y' - y = 2xe^{2x}, \quad y(0) = 1\]\)
We can use an integrating factor method. To begin, let us express the equation in its standard form:
\(\[y' - y - 2xe^{2x} = 0\]\)
The integrating factor \(\(I(x)\)\) is given by \(\(I(x) = e^{\int -1 \, dx} = e^{-x}\)\).
To obtain the solution, apply the integrating factor to both sides of the equation and perform the multiplication.
\(\[e^{-x}(y' - y) - 2xe^{2x}e^{-x} = 0\]\)
This simplifies to:
\(\[e^{-x}y' - e^{-x}y - 2x = 0\]\)
Now, observe that the expression on the left-hand side represents the derivative of \(\((e^{-x}y)\)\) with respect to \(\(x\)\).
Using this observation, we can rewrite the equation as:
\(\[\frac{d}{dx}(e^{-x}y) - 2x = 0\]\)
Integrating both sides with respect to \(\(x\)\), we get:
\(\[e^{-x}y - \int 2x \, dx = C\]\)
where \(\(C\)\) is the constant of integration.
Integrating \(\(\int 2x \, dx\)\), we have:
\(\[e^{-x}y - x^2 + C = 0\]\)
To find the constant \(\(C\)\), we use the initial condition \(\(y(0) = 1\)\).
Substituting \(\(x = 0\)\) and \(\(y = 1\)\) into the equation, we get:
\(\[e^{0} \cdot 1 - 0^2 + C = 0\]\)
\(\[1 + C = 0\]\)
\(\[C = -1\]\)
Substituting \(\(C = -1\)\) back into the equation, we have:
\(\[e^{-x}y - x^2 - 1 = 0\]\)
Finally, we can solve for \(\(y\)\) by isolating it:
\(\[e^{-x}y = x^2 + 1\]\)
\(\[y = (x^2 + 1)e^x\]\)
(B) To solve the initial value problem:
\(\[y' + \cot(x)y = 2\csc(x), \quad y\left(\frac{\pi}{2}\right) = 1\]\)
We can use an integrating factor method. To begin, we will rewrite the equation in standard form:
\(\[y' + \cot(x)y - 2\csc(x) = 0\]\)
The integrating factor \(\(I(x)\)\) is given by:
\(\(I(x) = e^{\int \cot(x) \, dx} = e^{\ln(\sin(x))} = \sin(x)\).\)
Apply the integrating factor to both sides of the equation and perform the multiplication.
\(\[\sin(x)(y' + \cot(x)y) - 2\csc(x)\sin(x) = 0\]\)
This simplifies to:
\(\[\sin(x)y' + \cos(x)y - 2 = 0\]\)
Now, observe that the expression on the left-hand side represents the derivative of \(\((\sin(x)y)\)\) with respect to \(\(x\)\). Using this observation, we can rewrite the equation as:
\(\[\frac{d}{dx}(\sin(x)y) - 2 = 0\]\)
Integrating both sides with respect to \(\(x\)\), we get:
\(\[\sin(x)y -\)\(\int 2 \, dx = C\]\)
where \(\(C\)\) is the constant of integration. Integrating \(\(\int 2 \, dx\)\), we have:
\(\[\sin(x)y - 2x + C = 0\]\)
To find the constant \(\(C\)\), we use the initial condition \(\(y\left(\frac{\pi}{2}\right) = 1\).\)
Substituting \(\(x = \frac{\pi}{2}\)\) and \(\(y = 1\)\) into the equation, we get:
\(\[\sin\left(\frac{\pi}{2}\right) \cdot 1 - 2\left(\frac{\pi}{2}\right) + C = 0\]\)
\(\[1 - \pi + C = 0\]\)
\(\[C = \pi - 1\]\)
Substituting \(\(C = \pi - 1\)\) back into the equation, we have:
\(\[\sin(x)y - 2x + (\pi - 1) = 0\]\)
Finally, we can solve for \(\(y\)\) by isolating it:
\(\[\sin(x)y = 2x - (\pi - 1)\]\)
\(\[y = \frac{2x - (\pi - 1)}{\sin(x)}\]\)
\(\(y = \frac{2x - (\pi - 1)}{\sin(x)}\).\)
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The complete question is:
Find The Solution Of The Given Initial Value Problem:
(A) \(\(y' - y = 2xe^{2x}\)\), and \(\(y(0) = 1\)\)
(B) \(\(y' + \cot(x)y = 2\csc(x)\)\), and \(\(y\left(\frac{\pi}{2}\right) = 1\)\)
Islands usually have strange animals because they are isolated.
True
False
Answers
Answer:
true
Explanation:
. Are consumers heterotrophs? Justify your answer.
Answers
Answer:
Are consumers heterotrophs?
Yes They Are! :D
:Heterotrophs are known as consumers because they consume producers or other consumers
xXxAnimexXx
Answer:
A heterotrophs is not a producer because it needs to survive on other plants and animals.
Hope it helps
A student drew the following model.
Glycolysis
Krebs cycle
Electron transport chain
ATP
Which phrase is the best summary of the model?
A. A food chain
B. A net transfer of
energy
o
C. A series of light and dark reactions
D. A series of trophic levels
Answers
Answer:
The conversion of food into usable energy
Explanation:
Answer: a net transfer of energy
Explanation:
:) just trust me
injury prevention worksheet, i need help with it please!
Answers
Preventing injuries in a school gym room requires proper maintenance and supervision of the equipment, as well as proper instruction on techniques and exercises.
What are the possible injury sites in a school gym room and how to prevent the injury?The possible injury sites in a school gym room and how to prevent the injury are given below:
Sprained ankle - Use proper footwear with good ankle support, ensure that the floor is free from debris, and provide proper instruction on exercises and stretching.Head injury - Ensure that protective gear, such as helmets or headbands, is worn when appropriate, and monitor activities that could lead to head injuries, such as jumping or running.Back strain - Ensure that proper lifting techniques are used when moving equipment or weights, and encourage the use of proper posture when performing exercises.Knee injury - Ensure that the floor is free from debris, use proper footwear with good support, and provide proper instruction on exercises and stretching.Shoulder injury - Ensure that proper technique is used when lifting weights or equipment, and provide proper instruction on exercises and stretching.Fractured bones - Ensure that the floor is free from debris and that equipment is properly maintained and checked for damage.Dehydration - Provide access to water and encourage students to drink fluids regularly during physical activity.Heat stroke - Ensure that the gym is properly ventilated, and provide access to water and a cool place to rest.Pulled muscle - Provide proper instruction on exercises and stretching, and ensure that proper technique is used when lifting weights or equipment.Eye injury - Ensure that protective gear, such as goggles or face shields, is worn when appropriate, and monitor activities that could lead to eye injuries, such as throwing or bouncing balls.Learn more about an injury at school gym at: https://brainly.com/question/7619856
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SOMEONE PLEASE HELP ME!!!
Answers
Answer:
The answer is alcohol.
Explanation:
It is not benzene, meth, and tobacco smoke.
Crossing-over results in what observable change in our cells?
a New combinations of alleles
b Gametes that are genetically identical
c Daughter cells that are diploid
Answers
Answer:
A
Explanation:
new combinations of alleles from both parents
Crossing-over results in new combinations of alleles in our cells. The correct option is a.
What is crossing over?Crossing over is a process of meiosis in which the chromosomes of similar types line up. One chromosome is from the father and the other is from the mother. The exchange of genetic material across homologous chromosomes is known as crossing-over. It results in new gene combinations on each chromosome.
When cells divide during meiosis, homologous chromosomes are dispersed randomly to daughter cells, while distinct chromosomes segregate independently of one another.
A new combination of alleles results due to crossing over, and it causes variation in offspring.
Therefore, the correct option is a. New combinations of alleles.
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I'm involved with the digestive activities of the cell; Who am I?
A. Lysosomes
B. Chloroplast
C. Nuclear
D. Membrane
Answers
write an open letter addressed to drivers and motorists. Make an appeal to them to follow speed limits and explain to them the comsequences.of not following such.
Answers
Pls do follow the speed limit or else i will hint you down .
By Me
What is a bearded dragon's normal body temperature?
Answers
Answer:
The answer to your question is ⇔ 35 degrees centigrade.
Which is equal to 95 degrees Fahrenheit.
Explanation:
I hope this helps and have a wonderful day!
Answer: it should have lighting and uvb light, littile heating pads in the winter but i recomend the hot spot to be 100 to 110 where the area youre dragon should sit, whats the age?
Explanation:
im a exspert on animals and they live in the desert.
R. Augustine, P. Dan, A. Hasan, I.M. Khalaf, P. Prasad, K. Ghosal, C. Gentile, L. McClements, P. Maureira, Stem cell-based approaches in cardiac tissue engineering: controlling the microenvironment for autologous cells
Answers
"Stem cell-based approaches in cardiac tissue engineering: controlling the microenvironment for autologous cells" discusses the use of stem cells in cardiac tissue engineering. In this field, scientists aim to create functional heart tissues that can be used to replace damaged or diseased heart tissue.
The researchers emphasize the importance of controlling the microenvironment for the growth and development of autologous cells, which are cells derived from the patient's own body. By creating an optimal environment, stem cells can be guided to differentiate into specialized cardiac cells, such as cardiomyocytes, which are responsible for the contraction of the heart.
The microenvironment includes factors like the composition of the culture medium, the presence of growth factors, and the physical properties of the scaffold on which the cells are grown. Scientists manipulate these factors to enhance cell survival, proliferation, and differentiation.
For example, the culture medium may contain specific nutrients and factors that promote the growth and differentiation of cardiac cells. The scaffold can be designed to mimic the properties of the native heart tissue, providing mechanical support and cues for the cells to organize into functional structures.
In summary, the article highlights the importance of controlling the microenvironment in stem cell-based cardiac tissue engineering to create functional heart tissues. By manipulating factors like the culture medium and scaffold properties, scientists can guide stem cells to differentiate into specialized cardiac cells
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help me with this page pls
Answers
Answer:
1. Industrial
2. Industrial and transportation
3. Coal
4. Oil
5. Oil
6. Coal and natural gas
This confuses me, but I believe it is the answer. Don't rely on this answer too much, though.
The process of DNA transcription uses one nucleic acid (DNA) as the template for creating another nucleic acid (RNA). Since DNA and RNA are both nucleic acids, each is made up of a combination of common and unique components. Match each term to the appropriate structure(s) on the diagram of DNA and RNA. Some terms will be used more than once. DNA RNA Pyrin guanine Answer Bank adenie thymine guanine ribose deoxyribose cytosinc phosphate group TEC "The process of DNA transcription uses one nucleic acid (DNA) as the template for creating another nucleic acid (RNA). Since DNA and RNA are both nucleic acids, each is made up of a combination of common and unique components. Match each term to the appropriate structure(s) on the diagram of DNA and RNA. Some terms will be used more than once. DNA RNA P: Pyrin guanine Answer Bank uracil adenie adening thymine cytosine thymine guanine ribose deoxyribose phosphato group
Answers
The appropriate structure(s) on the diagram of DNA and RNA can be matched to the following terms:
DNA: deoxyribose, phosphate group, adenine, thymine, guanineRNA: ribose, phosphate group, adenine, uracil, guanineThe genetic code is frequently referred to as a "blueprint" because it contains the instructions a cell requires in order to sustain itself. We now know that there is more to these instructions than simply the sequence of letters in the nucleotide code, however. For example, vast amounts of evidence demonstrate that this code is the basis for the production of various molecules, including RNA and protein. Research has also shown that the instructions stored within DNA are "read" in two steps: transcription and translation. In transcription, a portion of the double-stranded DNA template gives rise to a single-stranded RNA molecule.
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at which Number location on the map above great Zimbabwe be location?
1. 4
2. 3
3. 2
4. 1
Answers
Answer:
3. 2
Explanation:
Zimbabwe is a South African Country. This means Zimbabwe is definitely located around the southern part of Africa. It is also surrounded mostly by land, which means it is a landlocked country.
Also, it is a neighbor to the country of South Africa.
Therefore, the only possible location of Zimbabwe is the location numbered 2.
when elaine's hand accidently touched the hot stove, she quickly pulled it away. she didn't even have to think about it; moving her hand seemed to occur automatically. it is unlikely that this could have been possible without the effective operation of which nervous system?
Answers
The effective operation of the peripheral nervous system was likely responsible for Elaine quickly pulling her hand away from the hot stove.
The peripheral nervous system is part of the nervous system that lies outside of the brain and spinal cord and includes all of the nerves that control movement and sensation in the limbs and other parts of the body.
When Elaine's hand touched the hot stove, sensory receptors in her skin detected the painful stimulus and sent electrical signals along sensory nerves to the spinal cord. The spinal cord rapidly processed the incoming signals and transmitted a reflex response along motor nerves back to the muscles in Elaine's hand, causing it to pull away from the stove.
This rapid, automatic response is known as the spinal reflex and is a prime example of the peripheral nervous system's ability to control movement and sensation in a quick and efficient manner. This type of reflex response is particularly important for protecting the body from harm and allowing it to respond to environmental stimuli in real-time.
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What has happened to the amount of genetic diversity in this butterfly population? Explain your answer
Answers
The butterfly population's genetic diversity may have decreased. Some larvae had an adaptation to stop movement in response to shadows, but only a few had it.
What is the butterfly?Natural selection favors advantageous traits, increasing their frequency over time and decreasing that of alternative responses. Selective pressure reduces genetic diversity and increases prevalence of advantageous traits, resulting in a more homogeneous population with limited response variation.
Natural selection decreases genetic diversity in butterfly populations as they adapt to their ecological conditions. the method of normal determination leads to a reduction within the sum of hereditary differences in this butterfly population.
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See text below
The larvae of butterflies eat the leaves of flowering plants. Many of these larvae are eaten by birds before they can become adult butterflies. In one butterfly population, most larvae eat leaves continuously and ignore other organisms around the leaves. But a few newly hatched larvae stop moving when a shadow suddenly falls on the leaves. In a few years, most of the larvae in this population stop moving when they detect a sudden shadow.
What has happened to the amount of genetic diversity in this butterfly population? Explain your answer
1) The interaction of which two systems provides the molecules needed for the
metabolic activity that takes place at ribosomes?
Answers
Answer:
digestive and circulatory
A very small amount of Earth's vast water supply is available to humans and other species as liquid fresh water.
Answers
ASAP What occurs after the homologous pairs are separated?
A. The sister chromatids separate.
B. Spindle fibers attach to the chromosomes.
C. Haploid cells are formed.
D. The nuclear envelope reforms.
Answers
Answer:
A
Explanation:
the sister chromatids separate
After the separation of homologous pairs, the sister chromatids are subsequently separated during meiosis II.
What is Homologous pair?Homologous pairs may be defined as those chromosomes which are very identical to one another and have the same size and shape.
In meiosis I, the separation of homologous pairs occurred. After this process, the sister chromatids are separated in meiosis II.
This separation leads to the production of a total of four products having the half number the chromosomes as compared to the original cell.
Therefore, the correct option for this question is A.
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please help me:( please
Answers
Answer:
1. F
2.T
3.F
Explanation:
Meiosis led to the evolution of living organisms from simple unicellular organisms to multicellular life forms. Justify (short answer is required for class 9).
Answers
Answer:
Meiosis is a type of cell division that results in the production of haploid cells, which have half the number of chromosomes as the original cell. This process is essential for sexual reproduction, as it allows for the combination of genetic material from two different parents to create genetically diverse offspring. Over time, this genetic diversity can lead to the evolution of new traits and characteristics in a population, as certain variations are selected for and others are eliminated. This process is thought to have played a key role in the evolution of living organisms from simple unicellular organisms to more complex multicellular life forms, as it allowed for the creation of new combinations of genetic material that could give rise to new structures, functions, and adaptations. Therefore, meiosis is an important mechanism for creating genetic diversity, which is essential for the process of evolution.
What is the most specific group to which both camels and platypuses belong?
Answers
Answer:
mammals
Explanation:
both have mammary glands
Which part of the cell membrane is non polar and prevents the cell from dissolving.
Answers
Answer:
Non polar fatty acids
Explanation: