An intron is a segment of RNA found in pre-messengerRNA (pre-mRNA) molecules. It must be removed to makethe mRNA molecule functional. Some introns are capableof catalyzing the reaction that removes them from largerRNA molecules.What is the intron acting as in this scenario?OA. A lipidB. A membraneOC. An enzymeOD. A carbohydrate
If the intron is capable of catalyzing the reaction that removes introns from larger RNA molecules, that intron is acting as an enzyme (c). That's because enzymes are the type of molecules capable of catalyzing reactions.
Sex-specific pheromones are used for communication in non-human mammalian species like rats, and are detected by:the olfactory epitheliumthe dentate gyruspapillaethe vomeronasal organ (VNO)
Pheromones are mostly detected by sensory neurons in the vomeronasal organ (VNO), a bilateral tubular structure in the anterior region of the nasal cavity.
Answer: the vomeronasal organ (VNO)
How does contour plowing in farming help to prevent pollution?A. Contour plowing is used to reduce the amount of fertilizers used.B. Contour plowing is used to make insecticides less toxic.C. Contour plowing is used to reduce erosion and sediment pollution.D. Contour plowing is used to treat pathogens in livestock waste.
Plowing is a farming practice, that creates as its name says, contour lines, these lines are characteristic because they are placed perpendicular to the slope, for this reason, they are a method used to prevent erosion and retain water.
With this information in hand, we can see that option A is not correct because the use of plowing is related to soil loss and not to soil richness per se. Option B is not correct either because the use of insecticides is more related to the type of crop and surrounding vegetation cover. Option C in this case is the correct answer, it is used to reduce erosion and sediment pollution because helps retain soil. Finally, option D is not correct because this method is not related to livestock.
Which type of UV radiation is the most damaging?
A. UV-B
B. UV-C
C. UV-A
D. UV-D
Question 1
Which of the following statements about cellular division is/are correct?
All the answers are correct.
Replace old/dead cells (skin, hair, red blood cells)
Increase cell numbers (growth, bones), heal a wound
O Produce offspring and pass on their genetic material
1 pts
All of the suggested answers fit the question.
What causes cell division?The two distinct ways that cells divide are called mitosis and meiosis. Typically, mitosis—the process of creating new body cells—is what is meant when the word "cell division" is used. The process of cell division that yields sperm and egg cells is known as meiosis.
What is the proper order for the processes in cell division?There are six stages in this cycle: prophase, prometaphase, metaphase, anaphase, and telophase . Because cytokinesis is the final physical cell division after telophase, it is also referred to as the sixth stage of mitosis.
What mechanism divides cells?Cells divide in two different ways, mitosis and meiosis. The procedure of mitosis, which produces new body cells, is often when "cell division" is referred to. Meiosis is the name for the cell-division procedure that results in sperm and egg cells
To know more about cell division visit:-
https://brainly.com/question/13312481
#SPJ13
#9) True or False: “In human epithelial cells, central vacuoles are used for water metabolism.”
True.
The vacuole allows the cell to keep the cytosolic concentrations of ions and metabolites optimal for metabolism.
Which antacid is the most effective in neutralizing acid ALKA SELTZER OR ROLAIDS?
Answer: alka-seltzer
Explanation:
it is calcium carbonate and is most potent and can completely neutralize stomach acid
wwdadawdwadawdadadawdda
What has very thin walls to allow the nutrients and gasses to be exchanged between the blood and cells?ArteriolesVenulesVeinsCapillaries
- Arterioles are blood vessels of small diameter that extend from the arteries to the capillaries. These blood vessels are considered the primary resistance vessels and contribute with blood pressure regulation and distribute the blood into the capillary beds.
- Venules are small diameter blood vessels that carry the blood from the capillary beds to the veins.
-
A dominant allele is ________.
Answer: A dominant allele is a variation of a gene that will produce a certain phenotype, even in the presence of other alleles.
Explanation:
What’s the correct answer answer asap for brainlist
Temperate grassland is best described by few trees, mostly grass , rich soil , cold winters, average rainfall , good for agriculture.
What is temperature grassland and what are its characteristics?Temperate grasslands are the regions mostly covered with grasses and grasses , with shrubs also and large trees.The temperature of temperate region is majorly cold and less than other forest regions.Comparing it with tropical forests which have subsequent exposure to sunlight due the present of such forest on the equator.The amount of rainfall in temperate regions is not that appreciable comparing to the regions of tropical regions and savannas.From agricultural point of view also temperate regions are so good and produces a good amount of plants.To know more about temperate grassland visit:
https://brainly.com/question/14847110
#SPJ10
How does a deer and an apple tree have a relationship where each benefits?
Explanation:
Trees support the lives of many large organisms. Apple trees are used for food, shelter, and sites for reproduction. Deer also use the trees for consuming the apples.
You are provided with a number of taxa representing the following major chordates: Invertebrate chordates – Subphylum: Cephalochordata - Branchiostoma (lancelet)Class: ChondrichthyesClass: AmphibiaClass: ReptiliaClass: AvesClass: MammaliaComplete the table please
0. Class: Amphibia
,1. Class: Amphibia
,2. Class: Amphibia
,3. Class: Reptilia
,4. Order: Testudines
,5. Class: Reptilia
,6. Order: Squamata
,7. Suborder: Scincomorpha
,8. Class: Reptilia
,9. Order: Squamata
,10. Suborder: Serpentes
,11. Class: Chondrichthyes
,12. Superorder: Selachimorpha
,13. Class: Mammalia
,14. Order: Carnivora
Pelvic spurs are vestigial structures. What is a vestigial structure?
Vestigial structures are an anatomical feature that no longer has a purpose in the current form of the organism, they do not have a apparent function like the pelvic spurs, human appendix and tail bone. It is most likely to be a residual part from a past ancestor.
If they waited long enough, a person living in any single location in the world could create a sky map with every known constellation.
O A. True
О в. False
Ribosomal subunits are manufactured by the?
Ribosomal subunits are made by the nucleolus. The
Ribosome contains two different subunits, both of which are required for translation. The small subunit (“40S” in eukaryotes) decodes genetic messages, while the large subunit (“60S” in eukaryotes) catalyzes the formation of peptide bonds.
In eukaryotes, rRNA is assembled into four strands on the ribosome and into three strands in prokaryotes. Eukaryotic ribosomes are produced and assembled in the nucleolus. Ribosomal proteins enter the nucleolus and bind four rRNA strands to form the two ribosomal subunits (small and large) that make up the complete ribosome. The
Ribosomal units exit the nucleolus through the nuclear pore and enter the cytoplasm where they bind for protein synthesis. When no protein is produced, her two subunits of the ribosome separate.
Learn more about Ribosomal subunit here:
https://brainly.com/question/28926562
The nucleolus manufactures ribosomal subunits. The ribosome contains two different subunits, both of which are required for translation.
What are ribosomal units?Both of the two distinct subunits found in ribosomes are necessary for translation. The big subunit (designated the 60S in eukaryotes) catalyzes the synthesis of peptide bonds, while the small subunit (designated 40S in eukaryotes) decodes genetic signals.
The ribosome assembles rRNA into three strands in prokaryotes and four strands in eukaryotes. The nucleolus is where eukaryotic ribosomes are made and put together. The two ribosomal subunits (small and big) that make up the entire ribosome are formed when ribosomal proteins bind four strands of rRNA inside the nucleolus. The
Therefore, the ribosomal subunits are produced in the nucleolus. Both of the two different subunits found in the ribosome are necessary for translation.
To learn more about ribosomal units, refer to the link:
https://brainly.com/question/18994464
#SPJ12
Identify the organism below and the structure it uses to move.A. Paramecium; ciliaB. Protozoan; flagellaC. Amoeba; pseudopodD. Parasite; contractile vacuole
Cilia are hairlike structures that some protozoans, such as the paramecium, used to move. Thus, the answer is A.
What biome is located only at the equator
2a. The enzyme called Pheide a Oxygenase (PAO) catalyses the degradation of chlorophyll. Mendel’s I gene (yellow peas) codes for this enzyme. If this gene is mutated, what will happen to the pea colour? 2b. What was discovered when looking at the PAO levels between heterozygous and homozygous plants? 2c. Gibberellin is a plant hormone that promotes the elongation of plant stems. It is produced in a series of reactions requiring an enzyme coded for by a specific gene. If this gene is isolated, and mutated, how will this affect the height of the plant?
The answers for the alternatives are:
a) The PAO enzyme catalyses the degradation of chlorophyl, when the gene for the production of PAO is mutated, the pea plant won't have a functional PAO, being the chlorophyl in that plant not degradated, in consequence the pea plants will remain green and not turn out yellow like their gene stipule by Mendel's Law.
b) When made the comparison between heterozygous and homozygous for PAO enzyme in plants, it was discovered that heterozygous will have half as much PAO as a homozygous dominant for the PAO gene, since the lower enzyme level is enough to produce PAO for the plant degradate chlorophyl.
c) If the gene for the enzyme related to promote elogation of plant stems is mutated, it is expected that the height of the plant will be lower than with the specific gene working, because the reactions and gibberellin production and distribution are directed affect by that genetic modification.
Describe two mechanisms used by bacterial host cells to protect themselves from viral infection.
Answer:
modulating their cell surfaces, releasing proteins to inhibit or degrade host immune factors
Explanation:
Elisa’s diabetes causes her to have lower than normal numbers of glucose molecules in her cells. You already wrote about how this makes her tired.
Answer:
what is the question? please explain further so I might be able to help.
All the ants in one terrarium is a population of ants.
True
False
Answer: false? i think it is a population but its technically a colony
Explanation:
technically yes it is a population but for an exact answer its a colonie and if it more than one colony then it's a society if there are more than one species of creature then it is an ecosystem (i think)
3 blanks please help me find
Refer to the equation below to answer this question. What is this reaction? * 1 point
6C02
Carbon dioxide
Cellular Respiration
Photosynthesis
Hydrolysis
+
6H20 Light C6H12O6
Water
Sugar
+
602
Oxygen
The given reaction represents the process of photosynthesis.
Photosynthesis is the process by which plants synthesize their food. During photosynthesis, plants use carbon dioxide and water in the presence of sunlight to manufacture glucose (sugar) and liberate oxygen.
The reaction for photosynthesis can be given by the following equation:-
6CO2 + 6H2O + light ----> C6H12O6 + 6O2
Photosynthesis generally occurs in the leaves (which contain chloroplasts) of plants. The gaseous exchange takes place by means of pores called stomata, which are present in the leaves. Water is taken by the plants through the roots with the help of a vascular system. The chlorophyll pigment that is present in the chloroplasts within leaf cells is responsible for capturing sunlight.
To learn more about photosynthesis here
https://brainly.com/question/1388366
#SPJ1
Question 4 of 10In what way do adaptations help the survival of a species?OA. They increase the genetic diversity of the species.B. They reduce the number of alleles.OC. They ensure that many alleles are passed on.D. They prevent reproduction from happening.S
In this case, we need to remember certain concepts first adaptation, this refers to any trait that has evolved through natural selection and increases the fitness of the organism, genetically we are talking of a process bye which natural selection adjust the frequency of genes
Match the cell type (sex cell or somatic cell) with the examples provided.a. white blood cellb. spermc. egg (ova)d. hepatocyte (liver cell)e. epithelial (skin) cell
Sex cell is a gamete cell, used in sexual reproduction. which means that it will have half of the amount of chromosomes that other cells does, so it can merge with another sex cell and create a daughter cell (that is somatic) that has genetic material from both sex cells.
Somatic cell is every other cell, building our organs and our body, and it contains twice the amount of genetic material that's present in sex cells.
Therefore, we can match the examples as follows:
a. white blood cell - SOMATIC CELL
b. sperm - SEX CELL
c. egg (ova) - SEX CELL
d. hepatocyte (liver cell) - SOMATIC CELL
e. epithelial (skin) cell - SOMATIC CELL
Which of the following is NOT one of the methods involved in Integrated Pest Management?
A. cultural control
B. chemical control every day
C. mechanical control
D. biological control
What’s the correct answer answer asap for brainlist
Answer:
They remove large quantities of carbon dioxide from the atmosphere and use the carbon atoms to build organic molecules. Without Earth's abundance of plants and algae to continually suck up carbon dioxide, the gas would build up in the atmosphere.
Explanation:
When iron reacts with oxygen, it forms iron oxide, or rust.
4 Fe + 3 O2 → 2 Fe2O3
Reactants
Products
#F
#F
#O
#O
Answer:
Explanation:
head of the humerus
head of the humerus
head of the humerus
head of the humerus
The amount of iron oxide formed from the reaction will be 179.7 g.
Stoichiometric problemFrom the balanced equation of the reaction below:
[tex]4 Fe + 3 O_2 -- > 2 Fe_2O_3[/tex]
The mole ratio of Fe to [tex]O_2[/tex] is 4:3
Recall that: mole = mass/molar mass.
Mole of 112 g iron = 112/56 = 2 moles
Mole of 24 g [tex]O_2[/tex] = 24/32 = 0.75 moles
Thus, [tex]O_2[/tex] appears to be the limiting reactant. Iron is in excess.
Mole ratio of [tex]O_2[/tex] and [tex]Fe_2O_3[/tex] = 3:2
Equivalent mole of [tex]Fe_2O_3[/tex] = 0.75 x 3/2 = 1.125 moles
Mass of 1.125 moles [tex]Fe_2O_3[/tex] = 1.125 x 159.69
= 179.7 grams
In summary, if 112 g of iron combines with 24 g of oxygen, 179.7 g of [tex]Fe_2O_3[/tex] will be produced.
More on stoichiometric problems can be found here: https://brainly.com/question/15047541
#SPJ1
When iron reacts with oxygen, it forms iron oxide, or rust. 4 Fe + 3 O2 2 Fe2O3 If 112 g of iron (Fe) combines with 24 g of oxygen (O2), how much iron oxide is formed? A. 24 g Fe2O3 B. 136 g Fe2O3 C. 112 g Fe2O3 D. 88 g Fe2O3
1) Lions, zebras, and giraffes can be found in this biome ~(Hint: _ a _ _ _ _ a _).
2) A swampy coniferous forest that usually borders the tundra ~(Hint: _ _ _ g _).
3) Zone of the marine ecosystems that light touches ~(Hint: _ _ _ t _ _).
Answer: 1. Savanna 2. Taiga 3. Photic
Explanation:
