Answer:
Mutations rarely occur.
Chlamydomonas and Paramoecium are:
(a) unicellular prokaryotic
(b) multicellular prokaryotic
(c) unicellular eukaryotic
(d) multicellular eukaryotic
Answer:
(c) unicellular eukaryotic
Explanation:
Firstly, all prokaryotic cells are unicellular, they cannot be multicellular, so be cannot be correct.
Both Chlamydomonas and Paramoecium are single-celled organisms, so must be unicellular prokaryotic (a) or unicellular eukaryotic (c).
Chlamydomonas and Paramoecium are eukaryotic. They have membrane-bound organelles like a nucleus and food vacuoles. They are examples of protists.
Which number remains unchanged during photosynthesis?
A. the number of water molecules
B. the number of carbon dioxide molecules
C. the number of glucose molecules
D. the number of carbon atoms
The number remains unchanged during photosynthesis is the number of carbon atoms.
Photosynthesis is a term to refer to the conversion of inorganic matter to organic matter thanks to the energy provided by sunlight.
This transformation is expressed in the following chemical function
6CO2 + 6H2O --sunlight -> C6H12O6 + 6O2.
As evidenced in the chemical function, the number of carbon atoms does not change because at the beginning and end of the reaction there are 6 carbons. However, other molecules such as water, glucose or carbon dioxide change as they degradate or combine with others.
Therefore, the correct answer is D. while options A, B and C are incorrect because they refer to elements that do change their number during this function.
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Please help ! Thank you
Answer:
Two Hydrogen one Oxygen
Explanation:
H2O H2 O
What is the domain that producers are found in?
Among unicellular eukaryotes, cell sizes differ greatly. Amoeba and Paramecium organisms are animal-like protists that are heterotrophic, have no cell wall, and are several times larger than most human cells. What might be some reasons why these unicellular organisms have larger cells than cells with similar traits (heterotrophic, lacking cell walls) that are found in multicellular organisms?
Such unicellular organisms have large cells to carry out all essential physiological functions like obtaining food, reproducing, movement, and others.
Unicellular organisms have different sizes generally have larger cell than multicellular organisms such as animal like protists. Animal like protists are large single-celled organisms, known as Protozoa that include Amoeba and Paramecium.
These cells have larger cell due to unicellular organisms have to fulfill all of it's requirements and provide space for various cell enzymes, organelles, other macromolecules and machineries within a single cell.They have to perform all characteristics of life, so they need a bigger cell for these functions.Thus, these cells have to perform all the physiological processes so required relatively bigger cell to function properly.
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what happens to the protein in people with the 508 mutation? how does the person with the mutated DNA
Answer:
they become weaker
Explanation:
What are some structures that are common in macroalgae?
Answer:
The macroalgal thallus (i.e., plant body) consists of blades (leaf-like lamina), reproductive sori (spore clusters), gas bladders [flotation organs (on blades in rockweeds, between lamina and stipes in kelps)], stipes [stem-like structures (may be absent)], and holdfasts [with or without haptera (finger-like extensions ...
Explanation:
hope.. the was helpful
List the functions of proteins in the text area below.
Which statement about nucleic acids is true?
Check all that apply.
Nucleic acids store and transmit genetic information.
The nucleic acid DNA is the blueprint for life.
DNA holds the instructions for all structures and functions of an organism.
The nucleic acid RNA “reads” the instructions from DNA to construct proteins
Answer:
functions of protein:
growth and maintainance
causes biochemical reactions
acts as a messenger
provides structure
transports and stores nutrients
provides energy
Explanation:
all the statements about nucleic acids are true
This time its with picture
Answer:
C. part X
Explanation:
Part X is showing the bases pairing up with each other, which is the process of transcription. You can verify this by making sure A is pairing with U, T is pairing with A, G is pairing with C, and C is pairing with G.
Part Y is incorrect because it is showing TRANSLATION rather than transcription, which are easy to mix up.
Part W is simply showing the DNA, while part Z is showing the polypeptide.
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Pneumonia is caused by
pathogens
eubacteria
archaea
rickettsia
Which of the four prokaryotes listed below is the most efficient?
A. facultative aerobes
B. obligate anaerobes
C. aerotolerant organisms
D. obligate aerobes
Answer:
B
Explanation:
why is a magnitude scale called a backward scale?
Answer:
It is called the ‘backwards scale’ as the magnitude goes backwards, and because ancient astronomers had flaws in the scale, including the ‘backwards’ aspect.
Explanation:
Hope I helped!
help quick pls. please give scientific reasoning for your answer
Answer:
Expertise in 1 area
Explanation:
If you had a general knowledge of literally everything, that is great for mastering school. But, you are not going to school your whole life. You need college, work, and so on. When in college, it isn't like school, you can only choose 1 subject. Thus, it is good to expertise in 1 area.
I hope this helps you :)
Two cities are separated by 200 miles. City X has an altitude of 122 meters and City Y has an altitude of 260 meters. Calculate the altitude gradient between the two cites.
Answer: 0.69 m/ mile.
Explanation:
The altitude gradient between two cities X and Y = [tex]\dfrac{\text{Altitude of City Y - Altitude of city X}}{\text{Distance between two cities}}\times100\%[/tex]
Given: Two cities are separated by 200 miles.
City X has an altitude of 122 meters.
City Y has an altitude of 260 meters.
The altitude gradient between two cities X and Y =
[tex]\dfrac{260-122}{200}=0.69\text{m/ mile}[/tex]
Hence, the altitude gradient between the two cites = 0.69 m/ mile.
Please Help ASAP
Why don't plants need a digestive system?
A. They do not need nutrients to grow and develop
B. They use energy from the sun to make their own food
C. They create oxygen, which they use as food.
D. They absorb water and food through their roots.
Answer:
B. They use energy from the sun to make their own food
please help please help
Answer:
Arrow B only
Explanation:
Which accurately describes the relationship between nutrients and life-forms in an estuary?
O A. As nutrients increase, the number of life-forms increases.
0
B. As nutrients decrease, the number of life-forms increases.
O
C. As nutrients increase, the number of life-forms stays the same.
D. As nutrients decrease, the number of life-forms stays the same.
Answer:
O A. As nutrients increase, the number of life-forms increases.
Explanation:
common sense
The statement that best describes the relationship between nutrients and life forms in an estuary is as follows:
As nutrients increase, the number of life-forms increases.Thus, the correct option for this question is A.
What do you mean by Estuary?An Estuary may be defined as a type of ecotone that signifies the transitional zone of two different ecosystems which include the freshwater river ecosystem and the marine water ocean ecosystem.
In this ecotone, the characteristics of both ecosystems are present. Hence, it has a high biodiversity as compared to both ecosystems individually. This region shows maximum diversity and is thus known as the edge effect.
This illustrates that when nutrients in the ecotone increase, the number of life forms i.e. biodiversity increases.
Therefore, the correct option for this question is A.
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if the prey population increases, the predator population will__
a.) increase
b.) decrease
Answer:
increase
Explanation:
The predator population will increase if the prey population increase because the predators will have more food. Hope I helped! Have a great day! ;)
a) increase.
Explanation:As the prey population increases, there is more food for predators. So, after a slight lag, the predator population increases as well. As the number of predators increases, more prey are captured. As a result, the prey population starts to decrease.
hope this help! sorry if im wrong
I have a huge test tomorrow and I need to know every thing about Cells, like the eukarotic cell, i need to know the cell membrane, and osmosis.
Answer:
look it up or ask your friends to look it upmaybe?
Explanation:
Answer:
Cell Definition“A cell is defined as the smallest, basic unit of life that is responsible for all of life’s processes.”
Cells are the structural, functional, and biological units of all living beings. A cell can replicate itself independently. Hence, they are known as the building blocks of life.
Each cell contains a fluid called the cytoplasm, which is enclosed by a membrane. Also present in the cytoplasm are several biomolecules like proteins, nucleic acids and lipids. Moreover, cellular structures called cell organelles are suspended in the cytoplasm.
Types of Cells.Prokaryotic CellsProkaryotic cells have no nucleus. Instead, some prokaryotes such as bacteria have a region within the cell where the genetic material is freely suspended. This region is called the nucleoid.
They all are single-celled microorganisms. Examples include archaea, bacteria, and cyanobacteria.
The cell size ranges from 0.1 to 0.5 µm in diameter.
the hereditary material can either be DNA or RNA.
Prokaryotes reproduce by binary fission, a form of sexual reproduction.
Eukaryotic CellsEukaryotic cells are characterised by a true nucleus.
The size of the cells ranges between 10–100 µm in diameter.
This broad category involves plants, fungi, protozoans, and animals.
The plasma membrane is responsible for monitoring the transport of nutrients and electrolytes in and out of the cells. It is also responsible for cell to cell communication.
They reproduce sexually as well as asexually.
There are some contrasting features between plant and animal cells. For eg., the plant cell contains chloroplast, central vacuoles, and other plastids, whereas the animal cells do not.
Functions of Cell:Provides Support and StructureFacilitate Growth MitosisAllows Transport of SubstancesEnergy ProductionAids in ReproductionCell Membrane The cell membrane supports and protects the cell. It controls the movement of substances in and out of the cells. It separates the cell from the external environment. The cell membrane is present in all the cells. The cell membrane is the outer covering of a cell within which all other organelles, such as the cytoplasm and nucleus, are enclosed. It is also referred to as the plasma membrane. By structure, it is a porous membrane (with pores) which permit the movement of selective substances in and out of the cell. Besides this, the cell membrane also protects the cellular component from damage and leakage. It forms the wall-like structure between two cells as well as between the cell and its surroundings. Plants are immobile, so their cell structures are well-adapted to protect them from external factors. The cell wall helps to reinforce this function.What is Osmosis?Osmosis is a passive process and happens without any expenditure of energy. It involves the movement of molecules from a region of higher concentration to lower concentration until the concentrations become equal on either side of the membrane.
Any solvent can undergo the process of osmosis including gases and supercritical liquids.
Osmotic Solutions There are three different types of solutions:An isotonic solution: is one that has the same concentration of solutes both inside and outside the cell.
A hypertonic solution: is one that has a higher solute concentration outside the cell than inside.
A hypotonic solution; is the one that has a higher solute concentration inside the cell than outside.
Effect of Osmosis on CellsOsmosis affects the cells differently. An animal cell will lyse when placed in a hypotonic solution compared to a plant cell. The plant cell has thick walls and requires more water. The cells will not burst when placed in a hypotonic solution. In fact, a hypotonic solution is ideal for a plant cell.
An animal cell survives only in an isotonic solution. In an isotonic solution, the plant cells are no longer turgid and the leaves of the plant droop.
The osmotic flow can be stopped or reversed, also called reverse osmosis, by exerting an external pressure to the sides of the solute. The minimum pressure required to stop the solvent transfer is called the osmotic pressure
Significance of Osmosis Osmosis influences the transport of nutrients and the release of metabolic waste products.It is responsible for the absorption of water from the soil and conducting it to the upper parts of the plant through the xylem. It stabilizes the internal environment of a living organism by maintaining the balance between water and intercellular fluid levels. It maintains the turgidity of cells. It is a process by which plants maintain their water content despite the constant water loss due to transpiration. This process controls the cell to cell diffusion of water. Osmosis induces cell turgor which regulates the movement of plants and plant parts. Osmosis also controls the dehiscence of fruits and sporangia. Higher osmotic pressure protects the plants against drought injury.What are some reasons many people do not have enough to eat?
Answer:
Drought reducing the amount of food available, Population size, Not enough money.
Explanation:
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Calculate the momentum for the following football player: Todd: mass = 80 kg, velocity = 1.7 m/s
Answer:4.9
Explanation:80+1.7=4.9
How would the world be different if there was no photosynthesis?
Answer:
Plants would require a different way to gain food, and some would go extinct or wilt many times before gaining strength back.
Which of the following explains why some plants look green?
Your Answer
A
chlorophyll is the main plant pigment and it absorbs mainly wavelengths of light that are
B
chlorophyll is the main plant pigment and it transmits mainly wavelengths of light that ar
chlorophyll is the only type of plant pigment found in leaves
x plants contain different pigments which absorb and transmit different wavelengths of ligi
Back
C chlorophyll is the only type of plant pigment found in leaves
Answer:
the answer is a
Explanation:
Shannon is making a Venn diagram to organize the characteristics of cell walls and cell membranes. Which pair of characteristics both belong in the two areas of the Venn diagram that do not intersect?
Answer:
its b
Explanation:
Answer: B) Contains mostly cellulose; forms the outer layer of animal cells.
Explanation:
nya
the surface are of a sphere can be approximated as follows
for number 14 the answer is actually A AND B
HAPPY B-DAY MAN can i have brainliest i need one more
Which one of the following is fixed from the atmosphere by bacteria?
O magnesium
O phosphorus
O nitrogen
O sulfur
O potassium
Nitrogen is the following that is fixed from the atmosphere by bacteria. Thus, the correct option for this question is C.
How nitrogen is being fixed by bacteria?Nitrogen is being fixed with the action of nitrogen-fixing bacteria. These bacteria invade the root of the plants where they stimulate the formation of root nodules.
It is the region where bacteria convert the free form of nitrogen into ammonia. This inorganic form of nitrogen is utilized by plants for their proper growth and development.
The fixation of nitrogen in very important. This is because the atmosphere of the earth consists of 78% of free nitrogen which is not usable in form of living organisms. While the fixation of nitrogen converts this free form of nitrogen into usable forms. For example, it can be easily assimilated by plants and other living organisms.
Therefore, nitrogen is the following that is fixed from the atmosphere by bacteria. Thus, the correct option for this question is C.
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invasive species are becoming more of a problem in many areas of the world. which type of science will be most involved in researching solutions for problems caused by invasive species?
Answer:
it is medical and research science that will be mostly involved in it
Explanation:
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Invasive species are becoming more of a problem, ecology science will be most involved in researching solutions for problems caused by invasive species.
What is invasive species?An introduced, nonnative organism (disease, parasite, plant, or animal) that spreads or widens its range away from the location of its introduction and has the potential to affect the environment, the economy, or human health is referred to as an invasive species.
Together with effective education programs that provide individuals with the information and tools to deal with exotic plants, animals, and other species in their areas.
Therefore, ecologists contend that these measures will stop the future loss of biodiversity brought on by invasive species.
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please help me :( did anyone took the isat ( International student admission test) ??
What are air masses and how do they form?
Answer:
a body of air with horizontally uniform temperature, humidity, and pressure.
Explanation:
An air mass forms whenever the atmosphere remains in contact with a large, relatively uniform land or sea surface for a time sufficiently long to acquire the temperature and moisture properties of that surface. The Earth's major air masses originate in polar or subtropical latitudes.
