Name the ionic compound PbCO3
Answer:
lead carbonate
Explanation:
The ionic compound PbCO3 is called lead(II) carbonate.
Let's break down the name to understand it better:
1. The symbol "Pb" represents the element lead.
2. "CO3" is the chemical formula for carbonate, which is a polyatomic ion consisting of one carbon atom and three oxygen atoms.
To name the compound, we use the Stock system for naming compounds containing transition metals like lead.
1. The Roman numeral "(II)" indicates the charge of the lead ion in the compound. In this case, lead has a +2 charge. The Roman numeral helps differentiate between different possible charges of the metal ion.
2. The word "carbonate" represents the polyatomic ion CO3.
Therefore, the name of the ionic compound PbCO3 is lead(II) carbonate.
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A group of students are designing a model house that is safe in strong winds.Which house would be the safest?
a- A house built out of plastic straws.
b- A house built out of toothpicks.
c- A house built out of linking cubes.
d- A house built out of craft sticks.
Answer:linking cubes because they would be together
Explanation:
Why the rainforest in Costa Rica is not rich with plants? Remember to use scientific language
Answer:
Deforestation is the major problem causing lack of rich species in Costa Rica. This is due to over grazing by cattle.This may lead to flooding which affect fertility of the soil.These animals graze on the plants without regulations,and cause erosion as their hoofs percolate the soil, further reducing soil fertility.
In addition to sustain the beef production, trees were fell to for cattle ranching.This ultimately contributed to loss of the forest species.
Banana plantation is an additional factor.Forest were cleared to cultivate banana, which affects forest population.
Explanation:
which choice describes the flow of energy in a food chain?
a. grass - rabbit - wolf - sun
b. wolf - sun- grass- rabbit
c. sun- grass-rabbit-wolf
d. rabbit - wolf -sun - grass
Answer:
C.
Explanation:
c. sun- grass-rabbit-wolf
Answer:
C
Explanation:
sun- grass-rabbit-wolf
Sun makes grass grow, rabbits eat grass, and finally wolves eat rabbits.
EASY QUESTION! A box has a length of 2cm a width of 2 and a height of 2 cm. It has a mass of 4g. Find the density.
Answer:
1/2 g/cm³
Explanation:
density= mass/volume
density= 4 g/ 2*2*2 cm³ = 1/2 g/cm³
The Eocene period exists in Earth’s history around 34 MYA. What could a scientist do to determine what era the Eocene period belongs to on the geologic time scale?
Answer:
To understand what era the Eocene period belongs to on the geologic time scale, the scientist would have to examine the Cenozoic era to understand all information related to it.
Explanation:
First, let's start with an explanation of terms.
MYA simply means Millions of Years Ago Time Scale is a sequence or organisation of events which is used as a yardstick to measure the duration of history or how long the earth has existed. Eocene Period refers to the geological epoch that lasted from about fifty-six to approximately forty MYA. It is also defined as the second epoch of the Paleogene Period within the modern Cenozoic Era.
Given the definition of the Eocene Period, to understand what era an Eocene period belongs to, the person must carefully study the Cenozoic era.
Cheers!
Answer:
b
Explanation:
Which of the following is NOT a reason bacteria are good for genetic engineering? A. Their DNA accepts new genes more easily than Eukaryotes. B. DNA is easy to access and modify. C. They replicate very quickly. D. Plasmids can be engineered easily to produce proteins.
Answer:
D
Explanation:
"Scientists insert genes into loops of DNA called plasmids using natural processes and technological innovations. They can then introduce plasmids into bacteria or other cells, which replicate the inserted genes or induce the cells to produce such valuable proteins as human insulin and growth hormone."
The following is not a valid reason that indicates bacteria are good for genetic engineering:
Plasmids can be engineered easily to produce proteins.Thus, the correct option is D.
What is Genetic engineering?Genetic engineering may be defined as a methodology that utilizes laboratory-based technologies and equipment that support in the alteration of the DNA makeup of an organism.
A plasmid is a genetic structure that mediates the translocation of the genetic material of one organism to another for the purpose of modification.
Examples include insulin production, hormone synthesis, increase productivity in plants, etc.
The Plasmid is inserted into bacterial cells when the genetic material of the experimental organism is successfully employed. This process does not deal with the reason that bacteria are good for genetic engineering.
Therefore, the correct option is D.
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Which of the following blocks cell wall synthesis?'
augmentin
rifampin
erythromycin
ciprofloxacin
mebendazole
Answer:
im pretty sure the correct answer is ciprofloxacin
I am a dragon ball fan, but I NEED HELP ON BIOLOGY!!!! Look at attachment! Please help! Thanks! :)))
Answer:
DNA replication
Explanation:
DNA replication is where the cell takes a piece of DNA and replicates it(self-explanatory)
DNA replication -hope this helped
The English system issues as the international system of measurement true or false
Answer:false
Explanation:
help asap please!?
1.In binomial nomenclature of organisms, every species name includes two words. The first word is the name of the _______.
2.A monophyletic group or clade consists of a single _______ and all of its descendants.
3.Cladograms sometimes indicate _______, or shared characteristics. All species have that characteristic from the indicated point forward.
4.What's our system of naming organisms called, and what are the two most specific categories of organization?
5.If a scientist is studying the evolutionary relationship between two species of birds, what tool could she use to help her chart their relationship?
6.How is one clade differentiated from another clade?
7.Which type of character provides useful data for cladistic analysis?
8.What technological development allowed for a more detailed understanding of the relationship between species?
Answer:
1) genus
2) organism
3) clade
4) the system of naming organism is called binominal nomenclature while the two most specific categories of organization is genus and species the genus is the first and species is the second
5) the tool used to help her chat their relationship is a phylogeny
6) A clade is a grouping that includes a common ancestor and all the descendants (living and extinct) of that ancestor. Using a phylogeny, it is easy to tell if a group of lineages forms a clade.
Explanation:
Answer:
1. Genus
2. Common ancestor
3. Synapomorphies
4. The system is called binomial nomenclature, and the specific categories used are genus and species.
5. The scientist could use a phylogenetic tree to help visualize the evolutionary relationship.
6. One clade is differentiated from another clade by a branching point within the phylogenetic tree that's defined by some character or characters.
7. Since cladistics depict an evolutionary relationship between organisms, the traits that are studied and categorized are homologous traits.
8. DNA sequencing is the technological development that allowed scientists to gain a more complete understanding of the relationships between species.
Given an isolated desert city with little wind and long dry days, throughout the year, what would you consider before recommending an alternative energy source? What alternative energy source would you recommend?Explain your answer.
Answer:
The little wind and long dry days throughout the year is a characteristic feature of Arid habitats. Definitely, there will be abundant sunlight, with rainfall. Consequently, the alternative source of energy is Solar energy.(photovoltaic) Wind energy would have been used if the wind were strong and much, But with little wind, this is not an option.
Therefore ,confirming the use of solar as source of energy
Explanation:
In what part of the day do plants produce more carbon dioxide and oxygen
Answer:
During the day in the light reactions of photosynthesis
Explanation:
Develop a hypothesis to explain why you think eurypterids developed legs even though they lived on the ocean floor.
I think that since it lives on the ocean floor, at the deepest of the ocean. So anyway, the fin on the Eurypterids is still necessary but not that much, since they live on the ocean floor. Their movements mostly on the ocean floor. So fin would not help them "stick" to the floor. Also there are still gravity acts on the Eurypterids and the feet would help them move faster. Hope this helps.
The small intestine _____.
stores bile
releases bile into the small intestine
absorbs nutrients from digested food
absorbs extra water from undigested food
HELP!!!!!!!!!!!!!!!!!!!!!!
Answer:
The small intestine absorbs nutrients from digested food.
Explanation:
Which of these statements did Louis Pasteur confirm with his broth
experiments?
A. The theory of spontaneous generation is false.
B. All living organisms consist of units called cells.
O C. The cell theory needed to be changed.
OD. New cells can be formed by spontaneous generation.
does tracheids have protoplasts or not
Answer:
no
Explanation:
tracheids doesn't have protoplasts
_________7. During strenuous exercise, skeletal muscles use up ___________ and produce large amount of ________, which causes pain and fatigue in the muscle.
A. Oxygen, lactic acid C. CO2, pyruvic acid
B. Pyruvic acid, lactic acid D. Pyruvic acid, CO2
Answer:
A. Oxygen, lactic acid
What types of enzymes play a catalytic role in the regulation pathway of ubiquitination?
Answer:
ubiquitin activating enzyme ( E1), a ubiquitin conjugating enzyme (E2), and a ubiquitin ligase (E3).
Explanation:
In ubiquitination, ubiquitin (regulatory protein) attach to a protein to inactivate it and targets a protein for degradation via the proteasome.
There are three enzymes sequentially catalyse the process of ubiquitination that includes ubiquitin activating enzyme ( E1), a ubiquitin conjugating enzyme (E2), and a ubiquitin ligase (E3).
The E1 activates ubiquitin by forming a thiol ester bond between the C terminus of ubiquitin and the active cysteine of the E1 which is an ATP dependent step.
The activated ubiquitin then tranferred to cysteine of E2 which along with E3 transfers the ubiquitin to a lysine residue in the target protein.
Hence, all three ubiquitin activating enzyme ( E1), a ubiquitin conjugating enzyme (E2), and a ubiquitin ligase (E3) enzymes sequentially catalyse the process of ubiquitination.
What is the potential problem for robotic rovers on Mars?
Answer:
The limited autonomy of the robotic rovers on Mars posed a big problem.
Explanation:
Missions are very costly, and can lead the project to fail with the simplest errors. If the rover was permanently trapped on a rock or destroyed, it would have a catastrophic impact on the exploration. Thus on-board technologies would still be more traditional than what a laboratory environment has sought. The autonomous rovers will considerably increase the productivity of crew. Responsibility for their own well-being is also useful for the rovers: to prevent getting hurt, to recognize and correct recoverable hardware and software faults.
can people misdiagnose themselves with the flu
Answer:
Yes
Explanation:
Answer:
yes
Explanation:
the semtoms are very close to a common cold so a lot of people that don´t truly know the sign can misdiagnose themself´s
to occur where faults are 1) Earthquakes are located. 3- less likely more likely
Answer & Explanation:
Earthquakes can strike at any location on Earth and at any point of time. However, some parts of the Earth are more prone to earthquakes than others. Earthquakes happen along the edges of tectonic plates and fault lines and there are three large zones on our planet which are most susceptible to earthquakes.:-)
13.
Which is not a product of photosynthesis?
water
oxygen
glucose
nitrogen
Answer:
nitrogen
Explanation:
Plants use photosynthesis by taking in water and carbon dioxide and releasing oxygen while consuming food (glucose) for itself. Therefore, your answer is nitrogen. No nitrogen is created during this process
Answer:
Nitrogen
Explanation:
Photosynthesis is a process used by autotrophs and producers, like plants, algae, and some bacteria. In this process, water, carbon dioxide and light energy from the sun are turned into glucose and oxygen. The glucose becomes food for the organism, and the oxygen becomes the waste product.
There is no nitrogen involved in photosynthesis. It is not created, and therefore is not a product. The best answer choice is nitrogen
If the surface soil is saturated and precipitation increases, there will be
a. a decrease in the surface elevation of the lake
b. a decrease in the amount of groundwater
c. an increase in the rate of capillarity
d. an increase in the amount of runoff
The correct answer is D. An increase in the amount of runoff
Explanation:
Surface soil is considered to be "saturated" if soil cannot absorb more water as all pores in it are already filled. This can occur when there has been a lot of precipitation, or the retention of soil is low. Additionally, when soil is saturated and it is in contact with more water (for example, if precipitation increases) the water will not be absorbed by the soil but will flow to other areas, which is known as runoff. Thus, if the surface soil is saturated and there is precipitation, there will be an increase in the amount of runoff.
Answer
it is (option D) Have A Fantastic Day eaglestar446 on YT
Explanation:
the guy above me is correct :)
Cactus spines are modified
· branches
· leaves
· stems
Answer:
Leaves
Explanation:
The spines of a cactus help prevent water loss by reducing air flow close to the cactus and providing some shade, while also deterring most animals that would make a meal of the cactus.
which type of bond represent a weak chemical bond
Answer:
hydrogen bonds and london dispersion force and van der walls forces
Explanation:
these bonds represent weak bond because their bond energy is very less __kj/mole.
Se efectúa un experimento en el que a la planta 1 se le suministra CO2 normal pero agua que contiene átomos de oxígeno radiactivos. A la planta 2 se le suministra agua normal pero CO2 que contiene átomos radiactivos de oxígeno. Se permite que ambas plantas efectúen fotosíntesis y se mide la radiactividad del oxígeno gaseoso y los azúcares producidos. Qué planta esperarías que produzca azúcares radiactivos y cuál oxígeno radiactivo, por qué?
Answer:
The Oxygen liberated in photosynthesis comes from photolysis of water.
The CHO formed from Calvin Cycle during photosynthesis comes from reduction of CO2 with H+ of photolysis of water.
Therefore,since Plant 1 contains labeled Oxygen(from water) it will give radioactive Oxygen as the byproduct of its photosynthesis. It CHO is normal.
However,Plant 2, will contain radioactive CHO,because its radioactive CO2 will be reduced by H+ from photolysis of water to form radioactive labeled carbohydrate(CHO)
Explanation:
match each term to the example that describes it.
-three populations of insects from neighboring regions are able to interbreed.
-a population of a spider species has a wide variance in individual traits.
-researchers in the amazon region found 100 different types of ants living in one tree.
-sea otters eat sea urchins, preventing urchin overpopulation.
pairs:
-genetic diversity
-keystone species
-species diversity
-ecosystem diversity
Answer:
genetic diversity - a population of a spider species
keystone species - sea otters eat sea urchins
species diversity - researchers in the amazon
ecosystem diversity - three populations of insects
Explanation:
plato
O
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65°what is meant by the term photosynthesis
Photosynthesis can be defined as the process by which green plants manufacture their food. Photosynthesis is important not only to plants themselves but also to animals, which depend on plants for food.
4. What do complement proteins do?
O They heal tissue.
They transport hormones.
O They cause fever.
O They signal phagocytes.
Answer:
They signal phagocytes.
Explanation:
hope this helps