do plant cells have organelles?
Answer:
Most organelles are common to both animal and plant cells. However, plant cells also have features that animal cells do not have: a cell wall, a large central vacuole, and plastids such as chloroplasts.
Explanation:
What is the driving force behind the carbon cycle?
Answer:
Respiration and photosynthesis
Answer:
The driving force behind the carbon cycle is respiration and photosynthesis.
Explanation:
because it is boi .>.
How does climate change affect the ocean ecosystem? (3 points)
Answer: Climate change would affect the ocean ecosystem, when heat rises due to greenhouse gases, the ocean would absorb more heat, which can result an increase temperature on the ocean's surface.
Answer:
The oceans are absorbing more heat, resulting in an increase in sea surface temperatures and rising sea levels.
Energy level of liquid
Answer:
liquids have more kinetic energy than solids.
Explanation:
If If you add heat energy to I liquid the particles will move faster around each other as the kinetic energy between them increases. some of the particles will even have enough kinetic energy to break the liquid bonds and escape as gas aka evaporating
Why is calcium (Ca) in group 2, period 4 on the periodic table?
Answer:
Calcium is a silvery-white, soft metal that tarnishes rapidly in air and reacts with water. Calcium metal is used as a reducing agent in preparing other metals such as thorium and uranium. It is also used as an alloying agent for aluminium, beryllium, copper, lead and magnesium alloys. Calcium is essential to all living things, particularly for the growth of healthy teeth and bones. Calcium phosphate is the main component of bone. The average human contains about 1 kilogram of calcium.
Explanation:
How is a cell's cytoskeleton like the girders and
beams of a warehouse?
Cytoskeleton helps the cells to maintain its shape and size, due to this they are like the girdles and beams of a warehouse.
• A composition within the cell, which helps the cell to maintain their internal organization and shape is known as the cytoskeleton.
• It also provides mechanical support, which allows the cells to perform essential activities like movement and division.
• In the eukaryotes, the cytoskeleton within the cell is formed of filamentous proteins.
• The three prime classes of elements, which differ in size and in composition of protein forms the cytoskeletons.
• These are microtubules, actin filaments, and intermediate filaments.
Thus, due to the properties of the cytoskeleton, they can be considered as the girders and beams of a warehouse.
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In a species of rabbit, F is the dominant allele for brown fur, and f is the recessive allele for black fur. Two rabbits have four offspring. Three have brown fur, and one has black fur. Which of the following could describe the genotypes of the parents?
Answer:
A. Both parents are heterozygous, with one dominant allele and one recessive allele.
Explanation:
I just did it and I got it right
Both parents are heterozygous, with one dominant allele and one recessive allele. This statement describes the genotypes of the parents.
What is homozygous and heterozygous?There are two sets of chromosomes found in human beings and the pair of alleles is known as homozygous and hetrozygous. Homozygous is defined as a particular person having two common or identical genes these are known as homozygous. Hetrozygous is defined as particular person having different alleles are known as hetrozygous.
Allele is defined as differentiation of the pattern of nucleotides at the common position on a long DNA molecule. Chromosomes are the long thread type structure present in the inner side of nucleus of plants as well as nucleus.
The main composition of chromosome is protein and DNA molecule. Chromosomes trasffers from one generation to other generation or from parents to their children and they carry genetic information.
Therefore, Both parents are heterozygous, with one dominant allele and one recessive allele. This statement describes the genotypes of the parents.
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Why is a moderate temperature needed to support life on Earth?
Answer:
Earth is the only planet we know of that can support life. ... Earth's atmosphere also plays a vital role in regulating the temperature by providing a blanket of gases that not only protects us from excessive heat and harmful radiation from the sun, but also traps heat rising from the Earth's interior, keeping us warm.
Explanation:
A student wants to shorten the ripening time for tomato plants. He predicts that the more water the plants receive,the faster they will ripen. To test this prediction,he grows 20 tomato plants in a garden in full sunlight that has dry soil and 20 tomato plants in a garden with a shadier location where there is greater moisture content in the soil. He then records the time it takes for fruit to develop and ripen on the plants in each garden location. State a serious error the student made with the design of the experiment. State all the constants in the problem.
Answer:
Explanation:
The major problem with this experiment is that he should have had a constant variable (in the form of the surrounding temperature) for his groups. Meaning, he should have had both groups planted in full sunlight and/or a shadier location since his prediction was on water intake by the plant and not the surrounding temperature.
The independent variable here is the type of soil (moist and dry) used while the dependent variable here is the time it took the fruit to develop and ripen on the plants in each garden location.
NOTE:
Independent variable can be described as the variable that is not dependent on any variable in the course of an experiment. It is also changed by the researcher during the course of the experiment.
Dependent variable can be described as the variable that is been tested during the course of the experiment.
1)What is it about the structure of ATP that contributes to its ability to act as an energy currency?
2)When a phosphate is transferred from ATP, it can phosphorylate another molecule. How could this assist in allowing a protein to transport molecules against their concentration gradient?
Answer/Exlanation:
1) ATP (adenosine triphosphate) can be hydrolyzed such that it loses a phosphate group to form ADP (adenosine diphodphate). This is called ATP hydrolysis. This property allows ATP to act as energy currency because ATP hydrolysis releases the energy stored in the high energy phosphate bond.
2) Transporting molecules against their concentration gradient requires energy. When ATP loses its phosphate group, it can phosphorylate another molecule. This converts the molecule into its active state, giving that molecule the energy to pass through against the concentration gradient.
1) The ability of the ATP compound structure to act as an energy currency has been explained in the answers.
2) The method used by ATP to allow protein transport molecules against their concentration gradient has been explained below.
1) ATP is an acronym that stands for Adenosine triphosphate. This compound called ATP is divided into three phosphate groups with phosphate bonds that possess very high energy. Now, when water is added to ATP, the phosphate bonds that possess high energy will be broken down thereby releasing energy and producing adenosine diphosphate (ADP).
2) We saw above that when ATP undergoes hydrolysis, the phosphate bonds are broken down to form ADP and releases energy. However, it can undergo further phosphorylation to form another molecule which becomes energized when it goes to a higher energy state.
Now, In this higher energy state it gets to, it will be observed that the protein will possess enough energy to transfer molecules against a concentration gradient that requires energy.
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Your team must design an area in your school where students can relax between classes. You need to choose a material for a walkway. The materials you need to consider are in the table. Which material should you use so that the area is cool in terms of temperature? PLEASE HELP!!!!
asphalt
red bricks
concrete
soil
Answer:
It's B. Red Bricks
Explanation:
Answer:
Red bricks
Explanation:
A seismograph is a device that can detect and record seismic waves
Answer:
True
Explanation:
Answer:
True.
Explanation:
Hope this helps!!! <3
What can be said about the age of the seafloor at mid-ocean ridges?
Answer:
Scientists can determine the age of the seafloor by examining the changing magnetic field of our planet. ... While it cools down, it records the magnetic field during its formation. The two parts of the oceanic plate are pulled apart, and magnetic stripes become older as they move away from the mid-ocean ridge.
Explanation:
I didn't know so I googled it and this is what it came up with. I hope this helps!!
WILL MARK BRAINLIEST. Can someone help me wit des three questions?
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1.) What could happen if you remove an organism from a food chain?
2.) What is biodiversity?
3.) Why is biodiversity important in an ecosystem?
Answer:
1. every organism on the food chain will be affected. the ones below it will have a higher population, and the ones above it will have a lower population.
2. biodiversity is the idea, that all life is different, and environments thrive with it.
3. biodiversity is important in an ecosystem because if you take out biodiversity, you essentially take out all the animals in the given ecosystem.
Explanation:
1. when you remove lets say a spider from a food chain, the bugs that it would've eaten will start growing in population from not being eaten by the spiders. the birds that wouldve eaten the spiders, will decrease from the lack of that food source.
2. is self explanatory
3. if you only had one type of bird in one ecosystem, and that was the only animal in that ecosystem, the birds would all die, because they wouldn't have anything to eat, and nothing would eat it, so they might resort to cannibalism, or, as earlier stated, they would die off, from lack of food. the ecosystem would not be sustainable.
Pea plants can have yellow seeds or green seeds Which conclusion about the meaning of Y is correct if the allele
combination Yy is for yellow seeds?
O yellow and dominant
O green and recessive
O yellow and recessive
Ogreen and dominant
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Answer:
yellow and dominant
Explanation:
Gregor Mendel has stated that a gene comes with two alleles. According to his law of dominance, one of the alleles called DOMINANT allele is capable of masking the phenotypic expression of another allele called RECESSIVE allele.
In this question involving a seed color gene, which has two alleles Y and y. Y, which represents the dominant allele codes for the YELLOW trait while y, which represents the recessive allele codes for the GREEN trait. Therefore, a plant with Yy will have YELLOW SEEDS because the dominant allele (Y) is present.
What do plants do to maintain homeostasis?
a
respond to stimuli like water, sun, gravity and touch
b
reflect green light
c
produce flowers
d
change the food they make
Answer:
B
Explanation:
4. When a kangaroo jumps, the kangaroo's action force acts on the ground, what would be the
reaction force?
acts on the kangaroo
c. lesser than the action force
b. exerted by the ground
d. greater than the action force
a
Answer:
D
Explanation:
because after the jump it will gain force forst
6. PLEASE HELP ME A LOT OF POINTS
Answer:
B
Explanation:
can i get brainliest plz?
Choose all of the examples of balanced forces. This is for science
A chandelier has been hanging in the kitchen for years
A log floats on top of the lake
You place your book on the top of a flat table
Your wagon rolls down the hill
The wind blows and turns the turbines of a windmill.
Answer:
A log floats on top of the lake
You place your book on the top of a flat table
Explanation:
Please help
Explain how the binomial numendature works ?
And please put an answer that makes sense
Thank you
Btw it’s science
Answer:
Binomial nomenclature is basically the scientific classification of organisms, or taxonomy, using a latin name. It uses the genus and the species. For instance, the bacteria Staphylococcus aureus uses binomial nomenclature because Staphylococcus is the genus, while aureus is the species.
Biology Dictionary states, "The genus name is also called the generic name and always begins with a capital letter. For example, binomial name for cats is Felis catus. The genus name must be unique within each kingdom (see image below) but the same genus can be used in more than one kingdom. [. . .] The species within the genus is known by other names depending on the discipline. For general usage, the species is also called the specific descriptor. In botany, it is called the specific epithet and specific name in used in zoology. A species name can be used more than once within a kingdom.The species name always begins with a lower case letter. It can be a noun or an adjective and it must agree with the Latin gender of the genus name; masculine, feminine or neuter. For example, if the gender of the genus is masculine, the species name should end in -us, -a or -um. An example of this is Passer domesticus, the house sparrow, in which Passer has a masculine gender. Endings for feminine species names include -is and -e and -or is used for neuter genders."
Please mark as brainliest! =DEnvironmental scientists study ways society can use up natural resources and are not concerned with preserving them for the future.
The answer is: Both of them are False
how is energy lost from from an ecosystem?
Answer:
Energy that is not used in an ecosystem is eventually lost as heat. Energy and nutrients are passed around through the food chain, when one organism eats another organism. ... In each case, energy is passed on from one trophic level to the next trophic level and each time some energy is lost as heat into the environment.
b)how many parents did this komoda dragon have?
PLEASE ANSWER THESE QUESTIONS COMPLETELY!!! WILL MARK BRAINLIEST!!!
Questions:
A. Is the suspected father actually the father of this child?
B. How do you know?
Explanation:
A. Yes, the suspected father is the father of the child.
B. I know because 50% of the child's DNA is the same as the suspected fathers.(50% of the lines match up). Line 3 does not match up with line 1 at all.
Answer:
A. The suspected father is the actual father of the child, the reason for that is because the father shares the same DNA bars as the child.
B. The reason I know that is because a child has DNA from both parents and in this problem the suspected father and the mother both share some DNA with the child.
In a changing environment, which species will have the best chance for survival? Group of answer choices The ones that are super fast. The one with the largest population. The one with the biggest genetic variation. The one with the most intelligent individuals
Answer:
one with the largest poplation because they can cook,protect, and get supplies .
Explanation:
In a changing environment, the species which will have the best chances for survival are the one with the biggest genetic variation. Thus, the correct option is C.
What is Genetic variation?Genetic variation is the difference in DNA present among different individuals or the differences between the populations. The multiple sources of genetic variation include mutations and genetic recombination in species. Mutations are the ultimate source of genetic variation, however other mechanisms, such as genetic drift, contribute to it, as well.
Variation allows some individuals within a population to adapt better to the changing environmental conditions. Because, the natural selection acts directly only on phenotypes, more genetic variation within a population usually enables more phenotypic variation in a population.
Therefore, the correct option is C.
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s a compound considered a pure substance? Why or why not?
Answer:
yes
Explanation:
A chemical compound is considered to be a pure substance. This is because each molecule of the chemical compound has the same chemical formula.
Answer:
Yes, a compound is considered a pure substance.
Explanation:
Pure substances can be broken down into elements or smaller compounds, so they are treated as pure because they can be broken down by chemical ways.
Lactic acid fermentation occurs in
a.) any environment where oxygen is present
b.) yeast cells
c.) the mitochondria of plant cells
d.) muscle cells
how is osmosis used to stop seizures
Which of the following describes an ADP molecule?
Answer:
The correct answer is -
ADP has less potential energy than ATP
ADP can be created when an ATP breaks or releases a phosphate bond.
Explanation:
ADP is adenosine diphosphate which means adenosine bound with a sugar molecule and two groups of phosphate molecules that also play an important role in cellular energy flow like ATP.
In ATP, there are three phosphates and two high energy bond that provides much energy in breaking whereas, in ADP, only one high energy bond and two phosphates present there.
When an ATP molecule breaks or releases one of its Phosphoanhydrous bonds and release energy and one of the phosphate groups, adenosine diphosphate or ADP created.
Can parts of a system also be a system?
Answer:
yes A system can be also be a system