Resposta:
Ecotoxicologia
Explicação:
A ecotoxicologia é o estudo das interações que os seres vivos possuem não só entre si, mas também com o ambiente em que esses seres vivem.
Estudos de ecotoxicologia buscam compreender os diferentes tipos de reações causadas por substâncias químicas, bioquímicas e os processos biológicos que podem ocasionar essas reações, considerando a sensibilidade que diferentes organismos possuem a essas substâncias e os potenciais toxicológicos delas.
Can someone please help me
Answer:
Explanation:
Department of Transportation because they are in charge of regulating the safe travel and shipment of materials
Answer:
Department of Transportation
Explanation:
1. Plant hormones include the following
except.
A. insulin
B. auxin
C. cytokinin
D. gibberellin
Answer:
insulin
Explanation:
it is a hormone found in humans.
abi you barb
Do Now: b) Complete the following mRNA Strand: GCATACAGT (Be sure to look if it is asking for DNA or mRNA. DNA is GCAT and mRNA is GCAU. All answers must be in capitals when writing out bases, or the will be considered wrong.)
Answer:
CGUAUGUCA
Explanation:
Firstly, the strand in the question is a DNA strand because it contains the Thymine base, which is only found in a DNA molecule. The process of changing a DNA molecule into RNA molecule (specifically a messenger RNA) is called transcription. Transcription is done using the complementary base pairing rule, which states that Adenine (A) will always pair with Thymine (T), and Guanine (G) will always pair with Cytosine (C).
In the case of transcription, the Thymine bases will change to Uracil (U), since Uracil is only found in the RNA molecule. That is, A-U and G-C. Hence, a DNA strand that reads: GCATACAGT will produce a mRNA strand CGUAUGUCA.
Which of these is a characteristic of organisms in the domain Bacteria?
A.
They are single-celled.
B.
They contain membrane-enclosed organelles.
C.
They are multicellular.
D.
They contain a cell nucleus.
Answer:
The answer is option A.
They are single-celled.
Hope this helps.
Answer:
A
Explanation:
No cell nucleus.
Archaea is a domain that comprises of single celled microorganisms, which are prokaryotes. These organisms can survive in extremely harsh conditions like hot springs and salt water.
Antibiotics can be highly effective in treating bacterial infections, as long as the bacteria have not developed _______ to the antibiotics.
Bacteria or viruses can cause _______ diseases, which are increasing in occurrences, geographic area, or both.
Answer: Immunity
Explanation: Antibiotics can be highly effective in treating bacterial infections, as long as the bacteria have not developed immunity to the antibiotics.
Poisons and salts are removed from the blood by the _____.
lungs
stomach
kidneys
skin
Answer:
Kidneys
Explanation:
The kidneys remove wastes and excess water in the body through the urine, as urine flows from the kidneys to the bladder through two thin tubes located on both sides of the bladder called the ureter, and the bladder stores urine, and each of the kidneys consists of about one million filtering units called the renal tubular unit contains Each renal tubular unit has a filter called the glomerulus and tubule, and the renal tubular unit operates through a two-step process:
glomerulus: filters blood.
Tubule: Returns the necessary substances to the blood and removes waste.
AnswEr:
Kidneys
Explanation:
I hope dis helps :D
A antibiotic that block protein synthesis and have broad spectrum
activities with relatively low toxicity is:
A. bacitracin
B. penicillin
C. vancomycin
D. erythromycin
E. levofloxacin
Which best describes the process of peer review ?
Answer:
Scientists examine each other's work often to make sure it is not biased or unreliable. this makes for a group effort and reliable information.NOT JUST SCIENCE
Many fields outside of science use peer review to ensure quality.
Explanations : Peer review is the process of peers in the field of the work review the work and give opinion of it
If you follow the longest food chain in the food web below from grass to owl,
how many trophic levels are there?
grass
aspen
grasshopper
rabbit-fox
frog
#snake
owl
o
A. Three
B. Five
C. Four
D. Two
Answer:
I believe the correct answer is B. Five
Maja's family has a history of heart disease. What can she do to help lower her chance of having heart disease?
Naval writes out the chemical equation for photosynthesis. She includes two reacting molecules to the left of the arrow and two resulting molecules to the right.
Light energy, above the arrow
Chlorophyll,to the left of the arrow
Enzymes, to the left of the arrow
ATP, above the arrow
Answer:
The question is incomplete. The remaining fragment that completes the question is: "What more must be added to the chemical equation to accurately represent photosynthesis? "
The answer is Light energy, above the arrow
Explanation:
Photosynthesis is a metabolic reaction unique to autotrophic organisms like plants, algae etc. It is the process whereby these organisms produce their food (glucose) using light energy from the sun.
Photosynthesis cannot occur without light, as the name implies: Photo- meaning light. The sun is the source of this light energy, which photosynthetic organisms like plants capture using a green pigment called CHLOROPHYLL.
Photosynthesis is a reaction with a general equation:
6CO2 + 6H2O ---light energy-----> C6H12O6 + 6O2
However, the energy needed to perform this reaction comes from light provided by the sun. Hence, Naval needs to put LIGHT above the arrow in her equation in order to accurately represent photosynthesis.
Which of the following can cause acid precipitation?
A. The use of solar panels
B. The use of Hydroelectricity
C. The use of coal
D. All of the above
Answer:
C. The use of coal
Explanation:
Which is one of the six fundamental elements that are found in living organisms?
Answer:
1: Carbon
2: Hydrogen
3: Nitrogen
4: Oxygen
5: Phosphorus
6: Sulfur
Explanation:
The six fundamental elements that are found in living organisms are carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur.
Hope this helps.
A patient is receiving an infusion of an IV medication. The IV bag contains 800 ml of the solution, which is infusing at 100 cc/hr. If the infusion started at 2 pm, when will it finish?
Answer: 10 pm
Explanation: 800 ml infusing at 100cc/hr would take 8hrs so 8 hrs from 2pm is 10pm
Which descriptions apply to these two compounds? Check all that apply.
are isomers of each other
have same molecular formula
have same structural formula
are both hydrocarbons
have same number of each kind of atom
have same geometric arrangement of atoms
Image is not provided in the question. The required image is attached below.
Answer:
A. are isomers of each other
B. have same molecular formula
D. are both hydrocarbons
E. have same number of each kind of atom
Explanation:
The two given compounds are 3- methylpentane and 2,2 - Dimethylbutane.
They both are isomers with the same molecular formula C6H14. They both are made up of carbon and hydrogen called hydrocarbons.
As they have same molecular formula C6H14, so they have same number of each kind of atom including carbon and hydrogen.
Hence, the correct options are:
A.
B.
D.
E.
Answer:
a
b
d
e
Explanation:
What is the mean of the data set [3,2,2,12,6,5,14,4]?
A.2
B.4
C.6
D.7
Answer:
6
Explanation:
To find the mean of a data set, add all the values in the set together, and then divide the result by the number of values in the set.
3 + 2 + 2 + 12 + 6 + 5 + 14 + 4 = 48
There are 8 values in the data set.
48/8 = 6
So the mean of the data set is 6.
You are a pharmaceutical researcher trying to design a new drug for the treatment of cystic fibrosis. You are aware that an extracellular protein that is a chloride ion transporter is misfolded and never gets to the cell surface. You have a new undergraduate working with you. Explain which organelle is involved in this process and why the transporter protein is nonfunctional.
Answer:
Endoplasmic reticulum is the defective organelle in most CF.
Explanation:
This is because of mutation(deletion) in the proteins of these organelle. The CFTR protein -a transmembrane regulator get stucked inside the E.R, thus the CFTR chloride protein channel is blocked. Therefore the outflow of Cl and water out of the cell is obstructed.
Consequently, the mucus from blocked fluid flow, clogs the lungs, the fallopian tube, sweat duct, and other places.
consider a molecule of the polymer, polyethylene, and a protein molecule as if they were strings of beads. How would the string representing polyethylene differ from that representing a protein
Answer:
When a macromolecule contains repeated similar sub units of a particular molecule:such a repeated units are called polymers.
Therefore, polyethylene is a micromolecule of repeated subunits called ethylene formed during polymerization..Therefore, the small units joined together to form polyethylene are ethylene.These are alkene hydrocarbons,which are similar in structure with the carbon atoms linked by double bonds.When the Pi bonds of the double bonds breaks. hydrogen atoms forms free covalents bonds in all these sub units.
However, polypeptides is made of of 20 different amino acids, connected by peptides, disulfide and other bonds.Therefore the protein molecules will be different from the polyethylene and polymers. This is because each of the 20 amino acids has different R-groups, and It is this R-groups that determine the functional characteristics displayed by each amino acid sub- units.Therefore, the characteristics of a protein molecule will be determine by the type of Amino acids it contains.
Thus the beads of polyethylene will be the same, but different in proteins
Explanation:
--PLEASE HELP--
What is the population density if there are 40 squirrels in 4 square miles?
Answer:
10 squirrels/ square mile
Explanation:
Population density can be found by dividing the number of individuals by the area of the land they live in.
population/ land area
We want to find the population density for 40 squirrels that live in 4 square miles. Therefore, the population is 40 squirrels and the area of the land is 4 square miles.
population / land area
40 squirrel/ 4 square miles
Divide 40 by 4
40/4=10
10 squirrels/ square mile
The population density is 10 squirrels per square mile.
3 Question
Select the correct answer.
Which of these is a component of the atmosphere?
rock
oxygen
sediments
soil
Answer:
oxygen
Explanation:
I want some hand with this please
1) One reason why deforestation is occuring because people need wood from trees to build things, therefore, leading them to cuting countless of trees.
2) One environmental problem that results from widespread deforestation is that the carbon dioxide they would normally use remains in the atmosphere, therefore, promoting erosion.
3) One way to lessen the effects of deforestation is by re-planting the cut-down trees and by cutting down less trees.
This was my answer from the same question that you asked before
I hope it helps though :)
Both archaea and bacteria have a/n _______, but it is made of peptidoglycan in bacteria and pseudo peptidoglycan in archaea.
Answer: Cell Wall
Explanation: Both archaea and bacteria have a/n Cell Wall, but it is made of peptidoglycan in bacteria and pseudo peptidoglycan in archaea.
Which is a key component of the energy molecule ATP?
Answer:
The correct answer is phosphorous but occurs in the form of a phosphate
This nutrient is cycled between living things and the soil. Plants absorb this nutrient from the soil and turn it into organic compounds through assimilation. Animals eats the plants and pass the nutrient through the food chain from one organism to another. When the animal dies, it decomposes and returns the nutrient back to the soil. The nutrient can also enter the soil through weathering and erosion.
Answer:
1. Phosphorus cycle
2. Carbon cycle
3. Nitrogen cycle
Explanation:
Answer:
1. Phosphorus
2. Carbon Cycle
3. Nitrogen Cycle
Explanation:
Which part of the chemical equation is incorrect?
Answer: Thus the coefficient of oxygen is incorrect.
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
The given chemical equation for combustion of butane is
[tex]2C_4H_{10}+10O_2\rightarrow 8CO_2+10H_2O[/tex]
The balanced chemical equation for combustion of butane is :
[tex]2C_4H_{10}+13O_2\rightarrow 8CO_2+10H_2O[/tex]
Thus the coefficient of oxygen is incorrect.
Which of the following statements is correct regarding chromosomes?
A. Chromosomes are strands of DNA, tightly wrapped up, that are located in the nucleus.
B. Chromosomes are strands of RNA, tightly wrapped up, that are in the cytoplasm.
C. Chromosomes are strands of RNA, loosely wrapped up, that are located everywhere in the cell.
D. Chromosomes are strands of DNA, tightly wrapped up, that are located everywhere in the cell.
Answer:
A. Chromosomes are strands of DNA, tightly wrapped up, that are located in the nucleus.
Explanation:
Hope this helped and pls mark me brainliest
The statement that says "Chromosomes are strands of DNA, tightly wrapped up, that are located in the nucleus" is correct regarding chromosomes.
Chromosomes are the highly organized structures inside biological cells, made up of DNA and other proteins, and where most of an individual's genetic information resides.
Chromosomes have a double structure, composed of two structures parallel to each other and joined by a centromere, called chromatids.
In eukaryotic cells (with a defined nucleus), the chromosomes are elongated and found in the nucleus, while in prokaryotic cells, such as bacteria, these appear as circular rings closed in the nucleoid.
The chromosome allows the DNA information to be conserved and evenly distributed.
Therefore, we can conclude that chromosomes are condensed strands or rings of DNA and are located in the nucleus of cells when they are not dividing.
Learn more about chromosomes here: https://brainly.com/question/12463363
what part of the nervous system controls your internal organs
Answer:
autonomic nervous system
Explanation: that can control everything in our body
Answer:
The central nervous system (CNS) controls most functions of the body and mind. It consists of two parts: the brain and the spinal cord.
HOPE IT HELPS :)
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How many individuals show the trait being followed?
Correct answer gets brainlest
Answer: 8 carry the trait and 2 show the trait
Explanation: the halves are the carriers and the full ones are those who show the trait
A health researcher was interested in finding out whether the DASH diet can lower a dieter’s blood pressure. Researchers compared the blood pressure before going on the diet with the same subject’s blood pressure after 12 weeks on the DASH diet. Which of the following is the most appropriate statistical test to use to test whether the DASH diet lowers blood pressure?
A) Matched pairs t-testB) Inference for regressionC) ANOVAD) Chi-squared test for independenceE) Two-sample t-test
Answer:
a matched pairs t-test
Which helps prevent errors in DNA replication?
A. DNA is produced in the ribosomes.
B. There are no complementary base pairs in DNA.
C. DNA polymerase checks the DNA for errors.
D. DNA polymerase makes five DNA molecules from each single
strand, and keeps the best of the five.
DNA polymerase checks the DNA for errors and there are no complementary base pairs in DNA (Options B and C). It helps to prevent errors during DNA replication.
What is DNA replication?DNA replication refers to the cellular process aimed at generating two identical molecules of DNA during cell division.
DNA replication is a fundamental mechanism to sure the perpetuity of genetic material (i.e., the inheritance of genetic material).
During DNA replication, most DNA polymerases check the DNA for errors, repairing errors in a mechanism known as DNA proofreading.
Learn more about DNA replication here:
https://brainly.com/question/21265857
