Answer:
A.)
Explanation:
What process signals the end
of the cell cycle and the start
of a new cycle?
A. cytokinesis
B. mitosis
C. S phase
Answer:
B
Explanation:
Mitosis
What is the pattern of population growth in which growth slows and population size
levels off as the population approaches carrying capacity?
just needed coins xd
You get 1 inch taller and gain 10 points in a year ?
A-made of cells
B-Reproduce
C-display heredity
D-respond to stimuli
C-maintain homeostasis
D-obtain and use energy
E-grow and develop
F-evolve and adapt
Which one is the right answer
Answer:
E
Explanation:
I hope the answer is E...
I'LL MARK U AS BRAINLIST FRIST PERSON 2 ANSWER!!!!
Calcium, magnesium, and strontium are near each other on the periodic table and have some characteristics in common, but they differ in chemical reactivity. Which lists these metals in order from most reactive to least reactive?
A. calcium, magnesium, strontium
B. magnesium, calcium, strontium
C. strontium, calcium, magnesium
D. strontium, magnesium, calcium
Answer:
B
Explanation:
Answer:
strontium calcium magnesium
Explanation:
magnesiums atomic number is 12
calciums is 20
strontium is 38
A cell membrane is ...................which means that it allows only
certain substances to enter or leave a cell
semipermeable
permeable
2
Passive transport is the movement of substances through a cell membrane by using energy
true
false
3
Diffusion is the movement of substances from an area of low conc. to an area of high concentration
true
false
4
diffusion continues till equilibrium
true
false
5
...............is the diffusion of water molecules only through a membrane
facilitated diffusion
Osmosis
6
Transport proteins that carry large molecules, such as sugar molecules, through a cell membrane ..........
Carrier proteins
channel proteins
7
Transport proteins that form pores through a cell membrane
channel proteins
Carrier Proteins
8
When molecules pass through a cell membrane using special proteins
facilitated diffusion
Osmosis
9
facilitated diffusion needs energy
true
false
10
membranes are boundaries between cells and organelles
true
false
Answer:
semi-permeable
Explanation:
passive transport is the movement of substances along the concentration gradient and no energy is utilized in it
Identify the rectangular solid that represents the cell with the smallest amount of plasma membrane per volume of cytoplasm
Answer:
Solid 1 has the smallest amount of plasma membrane per volume of cytoplasm
Note: The question is incomplete. The attachment below gives the complete question
Explanation:
The outermost surface of a cell is bounded by the plasma membrane which functions to maintain the integrity of the cell as well as control the movement of particles in and out of the cell.
The ratio of the surface area of a cell to the volume of the cell indicates how big the cell is. When the surface area to volume ratio is small, the cell is very big, but if the surface area to volume ratio is big, the cell is small.
From the attachment below, the surface area (plasma membrane) per volume of plasma of the rectangular solids are as follows:
Solid 1: 10/2 = 5 cm⁻¹
Solid 2: 12.18/2 = 6.09 cm⁻¹
Solid 3: 19.0/2 = 9.5 cm⁻¹
Solid 4: 34.24/2 = 17.12 cm⁻¹
Solid 5: 65.79/2 = 32.895 cm⁻¹
Solid 1 has the smallest amount of plasma membrane per volume of cytoplasm
Which of the following kinds of cells preform basic functions such as obtaining energy from food?
Plant cells, but not animal cells
Animal cells, but not plant cells
Both plant cells and animal cells
Neither animal cells nor plant cells
Answer:
Both plant cells and animal cells
Explanation:
The process where the energy locked up in food is extracted take place in both plants and animal cells.This process is called Cellular respiration.It is the process of combining inhaled and diffused oxygen in the blood with assimilated food substances (glucose,amino acids,fatty acids and glycerol) to produce energy.
In both cells it takes place in the the cytoplasm and mitochondrial.
It begins with Glycolysis, followed by Krebs's Cycle..These two steps gives certain of ATPs to these cells
.However,the largest amount of ATPs is synthesized during oxidative phosphorylation for maximum of energy to be produced.This process involved the chemiosmosis where protons were diffused into the intramembranes by the proton pump (PMF) and diffused back into the matrix of the mitochondria to generate the electrochemical gradients.
The electrochemical gradients generate the energy for enzymes ATPase synthase needed for phosphorylation of ADP with Pi to give ATPs.
The oxygen act act the final electron acceptor.
What is the total magnification used to view these onion cells through the microscope setup on the right?
Answer:
400
Explanation:
Answer:
x400
Explanation:
Now, we would like you to share your plant evaluations with Sandy Waters, President of Save the Shoreline. You will do this by writing Mr. Waters a letter. When writing your letter, be sure to use a traditional letter format. This means that your letter should include a greeting (Dear ________, ) a body, and a closing (Sincerely, _________). The body of your letter must include the following: an opening that describes the procedure for ranking plants all plant rankings evidence from the data to support plant rankings a closing that explains how plant rankings could protect the dunes As always, be sure to use complete sentences and proper punctuation, capitalization, and spelling.
Identification of a sample includes providing the scientific name and origin of the species. More detailed information that requires a bibliographic survey is not included in the standard identification.
How is the identification of plants?Dear Sandy Waters, the most common process of plant identification is by comparison; in this process the newly collected sample is compared with another previously collected and identified. If all the characteristics are similar, the name of the sample can be determined.
Yours sincerely.
With this information, we can conclude that identification of a sample includes providing the scientific name and origin of the species. More detailed information that requires a bibliographic survey is not included in the standard identification.
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Which soil would most likely be found in the Arctic?
O Andisols
O Gelisols
O Histosols
O Spodosols
Answer:
B. gelisols
Explanation:
tundra soils are formed at high latitudes
Answer:
Explanation:
B. gelisols
In the laboratory, students pressed hulled, raw sunflower seeds between
two pieces of paper cut from a brown lunch bag. Oily dark spots
appeared on the paper. The test confirmed the presence of which
biological macromolecule in the sunflower seeds? *
O Carbohydrate
Lipid
Nucleic acid
Protein
Answer:protein
Explanation:
Numerous amino acids with positively charged amino groups in their side chains make up proteins, hence option D is correct.
What is Protein?Nitrogen atoms are present in these amino groups, large, intricate molecules known as proteins that serve a variety of vital functions in the body.
They are crucial for the construction, operation, and control of the body's tissues and organs and carry out the majority of their job inside cells.
Pre-translational activities such as protein folding, modifications, and proteolysis are often included together with transcription, translation, and post-translational events.
In order for your body to repair damaged cells and create new ones, you need protein in your diet. Children, teenagers, and expectant women all need protein for healthy growth and development.
Therefore, oily dark spots appeared on the paper the test confirmed the presence of Protein.
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What is a result of this farmers actions?
Answer:
B
Explanation:
the spotted strawberries mutated so he wiped out the non mutated to encourage new growth of the mutation.
True or false an aquatic succession can result in a terrestrial primary succession
Answer:
True
Explanation:
Please Help!!! Will mark brainlyest!!!
Analyze evidence from the lesson regarding the origins of cell compartmentalization. Then make a claim about the origin of cell compartmentalization based upon the evidence presented, stating two to three reasons for the claim. Provide evidence and specific examples that support each reason for the claim. Provide a conclusion to the short essay.
Answer:
Explanation:
Both organelles, the mitochondria and chloroplasts (in photosynthetic organisms), are compartments that are believed to be of endosymbiotic origin.A compartment is a separate space within a larger whole. In relationship to the endomembrane system and the nucleus.organelles that aren’t part of the endomembrane system, such as mitochondria and chloroplasts.Cellular compartmentalization allows cells to optimize the efficiency of the processes that occur within organelles. But despite the advantages of compartmentalization, it’s not a universal feature of life. In fact, compartmentalization of cellular functions into membrane-bound organelles is limited to only one of life’s three major groups, or domains. That domain is the one that we belong to, the Eukarya. In addition to animals, eukarya includes plants, fungi, and other organisms with eukaryotic cells: cells that are relatively large, complex, and compartmentalized. And to see why that is, we need to look at how life has diverged over time.
Answer:......
Explanation:
W6cy
.
Think about the relationship between each word pair
below. Then write a question about the first term that
uses the second term as the answer. For the pair
organism. cell, the question could be "What is the
basic building block of all organisms?" Answer the cell
4. evolution, adaptation
5. observation data
6. DNA gene
Answer:
4. Question : In theory of evolution, name the mechanism by which species adjusts to their changing environment?
Answer : Adaptation
5. Question : An observation is used to collect what?
Answer : data
6. Question : Your DNA consists of what ?
Answer : gene
Explanation:
4. Question : In theory of evolution, name the mechanism by which species adjusts to their changing environment?
Answer : Adaptation
In evolutionary theory, the mechanism of adaptation is the biological method by which any organisms try to adjust to the new environments or to the changes in the current surrounding environment.
5. Question : An observation is used to collect what?
Answer : data
An observation may be defined as a data collection method, which allows you to gather knowledge or information of a researched phenomenon by making observations when any phenomena occurs.
6. Question : Your DNA consists of what ?
Answer : gene
Genes are defined as the segments of DNA (deoxyribonucleic acid) that contain code for the specific protein which functions in one cell or more types of body cells.
Match each organelle with the correct function.
1. controls cell activities chloroplast
2. creates complex molecules mitochondria
3. synthesizes protein rough ER
4. stores lipids and steroids lysosome
5. digests cellular waste cell membrane
6. catches light energy for photosynthesis Golgi body
7. converts food into ATP smooth ER
8. controls homeostasis nucleus
Answer:
1. Controls cell activities
A= Nucleus
2. Creates complex molecules
A= Golgi body
3. Synthesizes protein
A= Rough ER
4. Stores lipids and steroids
A= Smooth ER
5. Digests cellular waste
A= Lysosome
6. Catches light energy for photosynthesis
A= Chloroplast
7. Converts food into ATP
A= Mitochondria
8. Controls homeostasis
A= Cell membrane
Explanation:
This is a guess but i read the text and i think this is it. :)
The nucleus controls all the cell activities, hence for questions 1- nucleus, 2- Golgi body, 3- Rough ER, 4- Smooth ER, 5- Lysosome, 6- Chloroplast, 7- Mitochondria, 8- Cell membrane are the correct options.
What is the function of the different cell organelles?The nucleus is responsible for storing genetic material DNA, which is expressed into the protein. It is surrounded by the nuclear membrane which is the major characteristic of eukaryotes.
Mitochondria is responsible for producing energy in the form of ATP, having all the metabolic enzymes and electron transport chains inside it.
Chloroplast is a unique organelle, which is found inside photosynthetic organisms, in this organelle all the necessary pigments and enzymes are present, which uses sunlight to produce food.
Therefore, different organelles have diverse functions.
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4. Why do we say, "The history of planet Earth is full of change?"
Explanation: The reason why many scientist, and well informed people say "The History of planet earth is full of change", is because that planet earth has colliding continents, and such beings of evolution right now we think we are the only living BEINGS in the universe, so the reason why The history of planet earth is full of change is colliding continents one day New York will be with Europe, and new governments will start forming, and sooner than later humans will start to evolve onto what is "The New world"
We say the history of planet Earth is full of change Because the landmasses are always moving.
What is the history of planet Earth?
The Earth's development from its formation to the present is the subject of the Earth's history. The main events of Earth's past, characterized by constant geological change and biological evolution, have been studied by nearly all natural science disciplines.
Earth was formed by accretion from the solar nebula around 4.54 billion years ago, which is about one-third the age of the universe. The primordial atmosphere and ocean were probably created by volcanic outgassing, but the atmosphere at the beginning lacked oxygen almost entirely. Due to frequent collisions with other bodies and extreme volcanism, much of the Earth was molten.
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Describe the four characteristics of life and give an example of how a bird shows that characteristic
Answer:
1: it has one or more cells
2: it can reproduce
3: it grows
4: and it maintains homeostasis
Projection maps of earth are made in a variety of ways , such as the Robinson’s projection , Mercator projection, and conic projection.
Why is this variety necessary?
A) all projection maps are accurate only across small regions .
B)most projection maps are more accurate near the center .
C)all projection maps are subject to varying types of distortion.
Answer:
C. All projection maps are subject to varying types of distortion.
Explanation:
The only truly accurate representation of Earth is the globe, as earth is a sphere. When one tries to map out a 3-d sphere on a piece of paper, it is impossible without some kind of distortion occurring. This distortion happens with distance, size, and sometimes other factors. Different projections are used for different purposes because some are more accurate than others in terms of distance, size, relative position, etc.
How does the atmosphere help life on Earth?
-It creates water.
-It provides a habitat.
-It keeps the planet cool.
-It filters out harmful radiation.
Answer:
It filters out harmful radiation
Explanation:
Earth is covered by a thick blanket of atmosphere to avoid high radiations from sun
Why is the Sl measurement system so important to the scientific community?
Answer:
Scientists use a shared system for reporting measurements called the International System of Units (SI). We use common measurement systems because science involves a lot of replication (i.e., repetition) to confirm results.
Explanation:
1. In research, a scientist must always consider
A. plants.
B. evidence.
C. photographs.
D. theories.
Answer:
the scientist mass considered a plant
Explanation:
a plant
In research, scientists must always consider the evidence. So the correct option is B.
What is scientific evidence?Science investigates the laws and characterization of the observable and unobservable phenomena of the universe. Anything that is put forth as a fact or hypothesis must have testable measures so that it can be proved.
The tests performed in the case of scientific analysis give some results. If these results prove the hypothesis that was being tested, it's called a piece of positive evidence. If the results disprove the hypothesis being tested, it's called a piece of negative evidence.
Scientific evidence is of extreme importance in the case of the scientific method. No scientific theory can be accepted without sufficient evidence supporting it. The evidence is also required for disproving any kind of objections that may arise against the scientific theory.
Therefore the correct option is B.
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A chemist is studying dissolved gases in the ocean. She graphs her data as shown below. Explain the trend shown in dissolved oxygen and carbon dioxide versus depth, and then predict where organisms that rely on high oxygen concentrations would live. Justify your answer by using the data provided.
Answer:
Don't copy word for word, but here are the explanations for the two parts of this question.
Explanation:
1. Explain the trend shown in dissolved oxygen and carbon dioxide versus depth
~ Looking at the chart you can see that there is a higher concentration of O2 in the higher depths of the ocean. Its concentration is around 6 ml/l when the depth is around 0 ft. The chart showing the depth getting deeper - to around 8,000 ft, O2 concentration is around 2 ml/l. Which concludes that the higher you are in the ocean, the higher the concentration of oxygen there is. The opposite conclusion applies for CO2. For example 8,000 ft of depth causes the level of CO2 to rise to 4.4 ml/l. At a depth of 2,000 ft carbon dioxide levels are about 2.8 ml/l. This data tells us that carbon dioxide levels rise the deeper you go into the ocean.
2. Predict where organisms that rely on high oxygen concentrations would live
~ Organisms that rely on high oxygen concentration would live in higher depths of the ocean. The epipelagic and mesopalegic zones have a higher concentration in oxygen than bathypelagic or abyssopelagic zones, so the epipelagic and mesopalegic zones would be good for organisms that need a higher concentration of oxygen to survive. Light is also much closer to the water in the higher zones making it a better habitat for those specific organisms. Organisms that rely on high oxygen also rely on photosynthesis.
Oxygen is present in large amount near the surface whereas carbondioxide gas is present in large amount at the depth of the ocean.
According to the graph, oxygen gas is present in large amount near the surface of ocean but with the increase in depth, the concentration of oxygen gas decreases while on the other hand, the concentration of carbondioxide gas is higher in the depth and lower at the surface.
So those organisms that needs oxygen for their growth and survival are present near the surface of the ocean but those organisms that needs carbondioxide for their growth and survival are present at the depth of the ocean so we can conclude that oxygen is present in large amount near the surface whereas carbondioxide gas is present in large amount at the depth of the ocean.
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Cellulose is found throughout the cell walls of plant cells. Cellulose makes cell walls rigid, which indicates that cellulose is a carbohydrate. lipid. nucleic acid. protein
Answer:
Carbohydrate
Explanation:
Cellulose is a type of carbohydrate
Answer:
Carbohydrate
Explanation:
Which lipid acts as a chemical messenger?
adipose tissue
cholesterol
testosterone
beeswax
the answer is testosterone
Answer:
the answer is c, testosterone
Explanation:
I just took the quiz on edge
Three different dynamic carts of different masses are rolled down a ramp. The heaviest one rolls down the ramp the fastest. Before concluding that a more massive cart will roll down a ramp faster, what experiment with these three carts might you want to do?
A) Run an experiment with the ramp at a different angle.
B) Find a fourth cart to add to the test, then test again
C) Change the surface of the ramp, then test the carts again.
D) Add masses to each car until they have the same mass, then test the carts again.
Answer:
The answer is D ;)
Explanation:
I got it right on USA TEST PREP
D) Add masses to each car until they have the same mass, then test the carts again.
How does mass of an object does have an effect on its acceleration?The mass of an object does have an effect on its acceleration down a ramp, as described by the formula F=ma (force = mass x acceleration).
However, the relationship between mass and acceleration is not as simple as assuming that a more massive cart will always roll down the ramp faster.
This is because there are other factors that can affect the acceleration of the cart, such as the angle of the ramp, the surface of the ramp, and the friction between the cart and the ramp.
To isolate the effect of mass on acceleration, it would be necessary to control for these other variables. Adding masses to each cart until they have the same mass would allow for a fair comparison of the effect of mass on acceleration down the ramp.
By ensuring that the only variable that is changing is the mass of the cart, it would be possible to determine whether the heaviest cart does indeed roll down the ramp the fastest.
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Describe the electric charges of the three main subatomic particles
Answer:
Electrons-negative
Protons-positive
Neutrons-neutral
Explanation:
Electrons have a negative charge, protons have a positive charge, and neutrons have no charge, so they have a neutral charge.
The electric charges of the three main subatomic particles are as follows:
Electrons: negative ([tex]-1.602[/tex] × [tex]10^-^1^9[/tex] coulomb).Protons: positive ([tex]+1.602[/tex] × [tex]10^-^1^9[/tex] coulomb). Neutrons: neutral (no net charge).What is the location of subatomic particles?Protons are the type of subatomic particles which are present within the nucleus of an atom along with the neutrons. While electrons are consistently revolving around the nucleus of an atom. Each one of them are having specific characteristics with respect to their identities.
Protons significantly have a positive electrical charge of one (+1) and electrons generally have a negative electrical charge of one (-1), while neutrons are neutral subatomic particles that bear no net charge.
Therefore, the electric charges of the three main subatomic particles are described above.
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Which of the following conclusions can be drawn from the data shown in the figure?
The figure shows two pie charts. The first pie chart represents distribution of nitrogen entering the Chesapeake Bay by its sources. According to the pie chart, each source accounts for the following percentage of the entering nitrogen: Agriculture fertilizer and manure account for 32 percent, Atmospheric deposition agriculture for 6 percent, Atmospheric deposition mobile, utilities, and industries for 26 percent, Atmospheric deposition natural for 1 percent, Municipal and industrial wastewater for 19 percent, Urban and suburban fertilizer runoff for 10 percent, and Septic systems for 4 percent. The second pie chart represents distribution of phosphorus entering the Chesapeake Bay by its sources. The sources account for the following percentage of the phosphorus: Agriculture fertilizer and manure for 45 percent, Natural sources for 3 percent, Municipal and industrial wastewater for 21 percent, and Urban suburban fertilizer runoff and transported sediments for 31 percent.
Which of the following conclusions can be drawn from the data shown in the figure?
Agriculture accounts for 77% of the nitrogen and phosphorus entering Chesapeake Bay.
Automobiles do not contribute to nutrient pollution in Chesapeake Bay.
Full protection of Chesapeake Bay will require consideration of activities within the bay's airshed and not just the bay's watershed.
Repairing broken septic systems will probably result in a large decrease in phosphorus pollution entering Chesapeake Bay.
Wastewater treatment plants do not contribute significantly to nutrient pollution in Chesapeake Bay.
Answer:
Full protection of Chesapeake Bay will require consideration of activities within the bay's airshed and not just the bay's watershed
Explanation:
Let's consider the options:
A) Agriculture accounts for 77% of the nitrogen and phosphorus entering Chesapeake Bay. Agriculture accounts for 45% of phosphorus and 32% of nitrogen, so cannot account for more than 45% of the pollution from these sources.
B) Automobiles do not contribute to nutrient pollution in Chesapeake Bay. 26% of nitrogen comes from atmospheric sources. Automobiles are a large contributor to atmospheric nitrogen pollutants, so it cannot be concluded that automobiles are not a contributor.
C) Full protection of Chesapeake Bay will require consideration of activities within the bay's airshed and not just the bay's watershed. Since atmospheric sources are tied with fertilizer and manure as the largest contributor of nitrogen pollution, it seems clear that addressing these sources will be required.
D) Repairing broken septic systems will probably result in a large decrease in phosphorus pollution entering Chesapeake Bay. The contribution of septic systems is 4% of the total nitrogen pollution, so eliminating that source will not have a major impact.
E) Wastewater treatment plants do not contribute significantly to nutrient pollution in Chesapeake Bay. Wastewater treatment accounts for about 20% of the pollution, so we'd have to say that is a significant source.
Answer:
the answer is the involvement of the US in the war put people to work and raised wages.
Explanation:
Humans get most of their energy from eating what type of food?
Lipids
Meat
Protein
Carbohydrates
Which three components are common to all amino acids?
an amino group, a carboxyl group, and an R group
an amino group, a phosphate group, and an R group
a five-carbon sugar, a phosphate group, and a nitrogenous base
a five-carbon sugar, an amino group, and a nitrogenous base
Answer:
A
Explanation:
eg
Inorganic solvents cannot dissolve amino acids, but water can.The only type of amino acid found in proteins in the human body is L-. Thus, option A is correct.
What are the components are common to all amino acids?All amino acids have at least one basic amino group and one acidic carboxylic acid group. Amino acids are crystalline, colorless solids.
The fundamental structure of each amino acid is the same, Each amino acid has a carbon atom at its “core” known as the carbon, and four groups are connected to it: a hydrogen atom, a—carboxyl group, an -amine group, and an R-group, also known as a side chain.
Therefore, The R-group is the only distinctive component of each amino acid because the carbon, carboxyl, and amino groups are shared by all amino acids.
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