Answer:cell walls; plant-like
Explanation:
Diatoms are white, porous and soft I'm nature. When it's die, it's leave it's shells which is made of silica glass.
The silica glass is some how abrasive which is why it is use as toothpowder.
Diatoms are microscopic bit of silica glass which are use as fine abrasive in toothpaste to clean teeth.
The cell wall of a plant-like protists called diatoms helps in cleaning our teeth.
What are diatoms?Diatoms are small protists which when dead, they are incorporated into glass particles.
Toothpaste have fluoride as it's main component.
Fluoride is obtained from fluorspar.
There, the cell wall particles of the diatoms which are plant like are incorporated into toothpastes.
Therefore, the cell wall of a plantlike protists helps in cleaning our teeth.
Learn more about protists and diatoms at: https://brainly.com/question/898643
HELP Using your knowledge of nonrenewable energy sources, choose the answer that BEST describes the environmental impact (s) associated with these energy sources.
Non renewable energy sources such as coal, oil and natural gas contribute to air pollution and cost more money.
Non renewable energy sources do not really have any major impacts on the environment.
Solar energy is the best type of energy for the environment.
Non renewable resources such as coal, oil and natural gas contribute to air pollution, water pollution and global warming.
Answer:
Non renewable resources such as coal, oil and natural gas contribute to air pollution, water pollution and global warming.
Explanation:
Non-renewable energy sources are the energy sources that do not naturally replenish themselves. At some points in the nearest future, their sources would be become depleted.
Non-renewable energy sources such as coal, crude oil and natural gas contribute to the pollution of the environment in varying degrees. They require burning and this process leads to the release of gases such as carbon dioxide, carbon monoxide, oxides of sulfur and nitrogen,methane, water vapor, etc.
The released gases often posses different threats to organisms in the environment at certain level, constituting what is known as environmental pollution. Some of them dissolve in rain water to cause acid rain, some are directly poisonous when inhaled by living organisms, while a host of the pollutants absorb radiation from the sun and cause the warming of the planet, a phenomenon known as global warming.
Crude oil spillage or that of the any of its derivatives cause various environmental problems. They are poisonous to aquatic lives and render water useless for humans.
why are zebras and donkeys considered different species
Answer:
there are two reasons: first , the offspring produced by interbreeding are usually sterile.But second, horse, donkeys, and zebras don't, in the wild l, typically interpreted with one another.Rather, they breed among themselves, maintain consistent, different appearances in the nature.
Hope it helps you
Stephanie F. is a 30-year-old professional woman in her first trimester of pregnancy. She and her husband entertain guests frequently and enjoy specialty cheeses on these occasions. They buy fresh produce, eggs, milk, and cheese from a local farmer’s market each week and limit their intake of packaged foods. She has no food aversions and eats a variety of foods. Stephanie wants to make sure her diet is nutritious and safe for pregnancy. She decides to evaluate her typical daily intake:
Breakfast:
Coffee with cream and sugar (2-3 cups)
Orange juice (1 cup)
Bagel with lox and cream cheese
Lunch:
Fresh vegetable salad with canned tuna or deli turkey
Cheese with fruit and crackers
Iced tea with sugar and lemon
Dinner:
Beef, pork, poultry, or fish
Pasta or rice
Fresh cooked vegetables
Snacks:
Cookies and milk
Fresh fruit
Questions:
1. During her pregnancy, what special considerations for food safety should Stephanie keep in mind when buying fresh produce, juice, and dairy foods at her local farmer’s market? Explain.
2. What changes could Stephanie make to her usual breakfast to meet the current dietary recommendations for pregnancy presented in this chapter? Explain your answer.
3. Due to their high content of mercury, what types of fish should Stephanie completely avoid during her pregnancy?
4. What precautions regarding meat, poultry, seafood, and eggs should Stephanie be aware of during her pregnancy? Why is it important for her to follow this advice?
Answer:
Explanation below
Explanation:
Stefanie should be aware that eating two much of food that is reach in fat during her pregnancy is very bad. This because the food substances will make the baby to be extraordinarily big and can results to a prolonged labor for the mother.
Therefore, according to present food intake procedure, Stephanie should avoid any food that can make the unborn child necessarily big.
Where does your organism live? Describe its habitat.
What is the definition of the length constant? What does the length constant tell you in terms of the electrical signal? Neurons are designed to maximize the length constant – why? What aspect of a neuron’s cable properties are manipulated to maximize the length constant? How are neurons modified (i.e. what is done to the structure of the neuron) to maximize the length constant?
Answer:
The overview of the given problem is outlined in the following section mostly on explanation.
Explanation:
The constant length seems to be a constant value which used to measure the distance between the grade electron density and the neurite through passive electron flow. The larger the quality of the distance constant, the faster the potential goes, throughout consideration of the electronic current.
The electronic replacement through one potential from neighboring areas including its cell will lead with the spatial description by a broad constant of length. This length decreases with either the size of that same neuron rising.The length constant, means of characterizing how much continuous current that flows extends until it bursts out from the axon, despite constants of limited period meaning leakier axons. The resistance of that same membranes should be just as efficient as possible as well as the tolerance of its axoplasm or extracellular media must be weak to enhance the efficient movement of current via an axon.Which form of succession replaces
an
existing system after a calamity?
Answer:
Secondary succession
Explanation:
Ecological succession is the term used to describe any series of change in the composition of an ecosystem over a particular period of time. Ecological succession is made up of two types viz: primary succession and secondary succession.
Primary succession involves the formation of a brand new ecosystem by the colonization of a barren area of land e.g bare rock, where no life existed. Secondary succession, on the other hand, is the recolonization of an area by a new set of organisms because the previously existing organisms have been wiped out by certain disasters e.g fire outbreak, hurricanes etc. In secondary succession, there is soil, which makes it possible for new organisms to sprout quickly after the calamity.
Example of secondary succession is when a fire outbreak burns the organisms in a community, allowing the root of grasses to sprout after.
what are the three parts of a DNA molecule
Answer:
A phosphate group, a sugar group, and one of four types of nitrogen bases
Explanation:
DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group, and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.
Which of the following best explains how a hurricane can increase an area’s susceptibility to future storms? a. Storm surges cause massive damage to buildings along coastlines. b. Hurricanes often flood coastal communities. c. Hurricane strength winds cause large amounts of property damage. d. Erosion caused by hurricanes can leave coasts more exposed to storms. Please select the best answer from the choices provided A B C D
Correct answer choice is:
d. Erosion caused by hurricanes can leave coasts more exposed to storms.
Explanation:
Important erosion, rapture, and removal of solids happen through storms. Beach erosion is a typical consequence of the high waves that transpire when hurricanes pass onto land. The decline of sand makes the beach to grow narrower and deeper in elevation. Storm loops take the sand offshore, keeping and depositing the sediment in great sandbars.
pls mark
What is meant by the term dynamic ecosystem
Answer:
Dynamic ecosystem refers to the ever changing cycles of our diverse ecosystems.
Explanation:
They are dynamic for both tor the smallest to the largest changes. These changes or dynamics are necessary for the ecosystem to survive.
Phosphorylation is another word for glycolysis
Answer: no
Explanation:
Which of the following best describes a process that helps a cell maintain homeostasis without requiring energy to be used?
1. Channel proteins provide a passage for molecules to cross the membrane via facilitated diffusion.
2. Membrane carrier proteins help substances enter the cell against a concentration gradient.
3. Pieces of the cell membrane for vesicles circulate around extracellular materials during endocytosis.
4.Protons are pumped out of the cell to create a voltage across the cell membrane.
Answer: BY
Explanation: Maintaining osmotic balance by taking in or releasing water to match the water concentration of the extracellular environment i know it's not 1234 on your list but this is the knowledge i know about your question so i hope it's helps you on the subject.
Why could’nt solid ice have been merged into the Earth when it was created?
a. Ice wasn’t made yet
b. All the ice that formed went to Mars
c. Ice could only form on comets
d. It was too hot in the inner solar system at the time of its formation
Answer: Option B.
All the ice that formed went to Mars
Explanation:
Ice is the solid part of water i.e frozen water. It appear transparent. It is abundant and close to the sun. It is abundant on Earth surface, particularly the polar regions.Frozen water also lies beneath the surface.
All ice that formed went to the Mars because Mars is closer to the Earth.
Which Hormone is least active while ovulation is occurring?
A. Luteinizing hormone
B. Estrogen
C. Follicle-Stimulating Hormone
D. Progesterone
Answer:
B estrogen (I think)
Answer:
Progesterone
Explanation:
Which atmospheric layer prevents meteroids from reaching earths surface
Answer: Mesosphere layer i believe
Explanation: i had to do an essay on this before but i forgot alot of it
Answer:
Mesosphere
Explanation:
The temperature drops in this layer to about -100 degrees Celsius. This is the coldest region of the atmosphere. This layer protects the earth from meteoroids.
Water filters down through the surface and enters groundwater or aquifers, by ________ A percolation B precipitation C condensation PLEASE HURRY IN A TEST!!!!!!!
Answer:
A. percolation
Explanation:
Fill in the blanks with the correct word or phrase
The process of change in a population overtime is called --------------
The process by which organisms that are better adapted to the environment survive and reproduce is called --------------------
Answer:
Essential knowledge #1: Natural selection is a major mechanism of evolution. Essential knowledge #2: Natural selection acts on phenotypic variations in populations. Essential Knowledge #3: Evolutionary change is also driven by random processes
Explanation:
Essential knowledge #1: Natural selection is a major mechanism of evolution. Essential knowledge #2: Natural selection acts on phenotypic variations in populations. Essential Knowledge #3: Evolutionary change is also driven by random processes
What is the purpose of a pedigree ?
Answer:
To help track the inheritance of a specific trait over multiple generations.
Explanation:
Pedigrees are used to analyze the pattern of inheritance of a particular trait throughout a family. Pedigrees show the presence or absence of a trait as it relates to the relationship among parents, offspring, and siblings.
What planet rotates from top to bottom?
Answer:
Uranus
Uranus' axis is tilted, so it rotates from top to bottom.
Why is there a border between light and dark on the moon
Answer:
As the Moon orbits around the Earth, we are able to see more or less of the half that is illuminated. ... There is a border between light and dark on the moon because the sun illuminates the half of the moon that is facing it. Leaving the other half dark.
Explanation:
Hope this helps!
The moon is the earth's only natural satellite and it gets its light from the sun. The moon changes its phases from a new moon to a full moon.
The terminator is the dividing line that is found between the moon's lighter and darker sides. It is sometimes known as the twilight zone. It can be seen during the rising and setting of the sun. The line is there so as to indicate the difference between night and day. The sun can illuminate only that part that is facing it. As the moon also rotates around the earth only that side is visible.Hence the sunlight travels in a straight path and can't reach the other side.
Learn more about the there border between light and dark on the moon.
brainly.com/question/21644751.
Which of these produces the cell's chemical energy?
A. Endoplasmic reticulum
B. Membrane
C. Mitochondria
D. Nucleus
Answer:
C
Explanation:
Which graduated cylinder would you use to measure exactly 15.0mL of water for an experiment?
Answer: i think it's a A 50-mL volumetric cylinder with 0.1-mL accuracy scale
Explanation:
HELP ILL GIVE YOU BRAINLIEST ‼️‼️‼️‼️‼️‼️
Select statements that accurately describe receptor tyrosine kinases (RTKs).
a) The intracellular domain has phosphatase domains.
b) Some RTKs are dimeric in the presence of a ligand.
c) Ligand binding is required for autophosphorylation (cross‑phosphorylation).
d) The structure includes a transmembrane helix.
e) The α subunit contains seven α helices that span the membrane.
f) A ligand binds to the extracellular domain.
Answer: B,C,D,F
Explanation:
Of the given propositions it is correct that:
B. RTKs are generally (but not always) monomeric in the absence of ligand.
The observed structure of most RTKs are monomeric, thus their structure will adapt to the needs of the organism
C. A ligand binds to the extracellular domain.
When the cell can express extracellular domains, many of the ligands that circulate through the medium will be able to find their targets and trigger reactions.
D. Ligand binding is required for autophosphorylation (cross phosphorylation).
After the ligand finds its domain, the union will generate conformational changes, including autophosphorylation. which will produce chain reaction
F. The structure includes a transmembrane helix.
it is true that the membrane has a propeller that allows its conformation
1st question ??? biology
Answer:
A
Explanation:
Early groups of hunter gatherers continued to move south. They would eventually settle down in areas such as central america, with civilizations such as the Aztecs and the Mayans.
Answer: if you ask me I would say d if Im correct
Explanation:
(CM.05] In the United States, tornadoes generally occur because of the
freezing of ocean water
underwater earthquakes
meeting of cool and warm air masses
shifting of warm and cool ocean currents
Which of the following cells go through MEIOSIS?
a) skin cells
b)reproductive system
c)stomach cells
Answer:
Reproductive system is the answer to your question.
The universe consists of many different galaxies, which, in turn, consist of many different solar systems. Each solar system has a central star around which planets orbit.
Earth, for example, is a planet that orbits the Sun in the Solar System. The Solar System is one of many that can be found in the Milky Way galaxy.
This example demonstrates that
Answer:
Earth and the sun are a part of the solar system
2 Points
How are organisms in the domain Eukarya different from those in the domain
Archaea?
Explanation:
Domain archaea holds micro-organisms that is bacteria that has cell wall consist up of peptidoglycan .The eukarya differ from the archea and bacteria in that cells are eukaryotic,meaning they consist up of a membrane enclosed nucleus and other membrane enclosed organelle
How are photosynthesis and cellular respiration related
Answer: Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.
Explanation: Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.
All mammals have all of the following
characteristics except...
*
Answer:
You need to list the characteristics to choose from.
Explanation: