Answer:
Each cell has half the number of chromosomes and cells are usually genetically different
how the exposure to penicillin affects the survival of some bacteria in the population
Answer:
When exposed to penicillin, the frequency of resistant bacteria will increase as those that are resistant survive and reproduce. — The resistant bacteria will survive and they will produce offspring that are resistant
Explanation:
pls mark brainliest
What are some of the areas that have high extinction rates?
Answer correctly and you will get brainliest.
Answer:
According to IUCN counts, the countries with the highest numbers of species at risk of extinction are Ecuador (2,301), the U.S., Malaysia (1,226), Indonesia (1,206) and Mexico (1,074)
Explanation:
Answer:
Australia has the worst mammal extinction rate of any country in the world, and the catastrophic bushfires of 2019-20 impacted nearly 3 billion animals and have pushed many more of our precious wildlife on the fast-track towards extinction.
Explanation:
please mark me brainliest
PLEASE HELP!! I'LL GIVE A THANKS, FIVE <3, AND BRAINLIEST!!!! ASAP
A. Identify two examples of environmental factors that may impact myeloperoxidase activity. Describe how each of the environmental factors would affect the reaction tare of an enzyme.
B. Predict the how researchers can use myeloperoxidase activity as oxidative stress biomarkers in patients with rheumatoid arthritis. Provide reasoning to justify your prediction.
Answer:
So... MPO is most abundantly expressed in neutrophil granulocytes, and produces hypohalous acids to carry out their antimicrobial activity through oxidative damage during the respiratory burst. It requires heme as a cofactor.
Regarding environmental factors ... obviously the first factor is the presence of an infection and inflammation that cause an increase in the activity and production of MPO. Second, alterations in the MPO gene cause its congenital deficiency which predispose to infections.
Rheumatoid arthritis is an autoimmune and autoinflammatory rheumatoid disease in which significant joint damage is observed. In the joint capsule, inflamed infiltrates are observed composed of neutrophils and lymphocytes. Measurement of MPO levels in the joint cavity could therefore be related to the amount of neutrophils and thus to the extent of the inflammatory damage.
When the respiratory burst occurs, MPO is most abundantly expressed in neutrophil granulocytes, which then create hypohalous acids to carry out their antimicrobial function through oxidative damage.
What is MPO?Regarding environmental causes, the first one is undoubtedly the existence of an infection and inflammation, which elevate MPO activity and production.
Second, changes to the MPO gene result in its congenital deficit, which makes people more susceptible to infections.
Therefore, the amount of neutrophils and, consequently, the severity of the inflammatory response might be connected by the measurement of MPO levels in the joint cavity.
Therefore, When the respiratory burst occurs, MPO is most abundantly expressed in neutrophil granulocytes, which then create hypohalous acids to carry out their antimicrobial function through oxidative damage.
To learn more about respiratory burst, refer to the link:
https://brainly.com/question/6574787
#SPJ2
what are mutations and how do they affect an organism?
Answer:
Mutations can affect an organism by changing its physical characteristics (or phenotype) or it can impact the way DNA codes the genetic information (genotype). When mutations occur they can cause termination (death) of an organism or they can be partially lethal
Explanation:
4.This photograph was taken in 2004, 24 years after Mount Saint Helens erupted. Compare and contrast this photo with the previous three. What changes do you see in the biotic and abiotic factors? Does anything surprise you about this series of photographs?
Answer:
In this picture the ground is now completely covered in vegetation and trees are growing back all along the road and sides of the picture. Then there’s little flowers and grass and bushed all over the place. In the other pictures the ground was bare, with the second and third pictures having bushes and other little vegetation starting to grow. Changes in the Biotic Factors: There are now larger trees, there is grass, flowers, small bushes, and other small vegetation growing. Changes in Abiotic Factors: The ground is no longer dust and ash, The dead trunks and branches are covered in vegetation for the most part and are decomposing.
Explanation:
Brainliest please?!
What is the difference between biology and chemistry?
Answer:
BIOLOGY IS STUDY ABOUT PLANT AND ANIMALS BUT CHEMSITRY IS ABOUT CHEMICAL EQUATIOB
please help me please will give brainliest to
Answer:
16
Explanation:
By using the law of independent assortment, you can solve this by calculating
[tex]2^4[/tex]
however, crossover can cause endless possibilities of genotypes!
10. Which statement correctly describes the roles of mRNA and tRNA in protein synthesis?
A. tRNA delivers DNA code to the ribosome and mRNA delivers amino acids to the ribosome
B. mRNA delivers DNA code to the ribosome and tRNA delivers amino acids to the ribosome
C. tRNA delivers DNA code to the nucleus and mRNA delivers proteins to the ribosome
D. mRNA delivers DNA code to the nucleus and tRNA delivers proteins to the ribosome
Answer:
The right answer is D.
Explanation:
The messenger ribonucleic acid, messenger RNA, or mRNA is a transient copy of a portion of the DNA corresponding to one or more genes. mRNA is used as an intermediate by cells for protein synthesis. Jacques Monod, François Jacob, and their collaborators issued and showed the concept of messenger RNA in 1960.
If an environment becomes warmer and drier, the change that would most likely
help a species adapt would be an increase in its
Answer:
ability to store water
Explanation:
WILL MARK BRAINLIEST Identify 2 organisms that would have a decreased food supply if insects were removed from the food web,
Answer:
Frogs and voles would have less food supply.
Explanation:
There would be more food for the rabbits and slugs, so their populations would increase. However, ( there would be less food for the frogs and voles), so their populations would decrease. This means less food for the foxes and hawks. However, there are likely to be more rabbits and thrushes for them to eat, so their populations might stay the same.
PLEASE HELP
1. Which of the following pairs of chemicals are understood to be the products of photosynthesis and the reactants in cellular respiration?
A. C6H12O6 + 6H2O
B. 6CO2+ H2O
C. C6H12O6 + 6O2
D. 6CO2 + 6H2O
Answer:
I think it is c dhbdbbdhd
Similar body parts with different purposes found in different animals are known as:
-the fossil record
-homologous structures
-vestigial structures
-similar embryo development
Homologous structures
The total number of fossils that have been discovered and the information derived from them is called the...
A. Chronological order
B. Common ancestry
C. Sedimentary block
D. Fossil Record
E. Metamorphic rock
F. Nitrogen dating
G. Timeline
14
Select the correct answer.
An avalanche takes place when Ice and snow move down a slope with great speed. What effect does friction have on its rate of movement?
OA.
Friction causes the avalanche to move rapidly.
OB.
Friction creates a curved surface that decreases the speed.
OC. The speed of the avalanche decreases with increased friction.
OD
The speed of the avalanche increases with increased friction.
O E.
Friction does not have any effect on the avalanche.
Answer: OC
Explanation:
What is the climate in Ireland?
Answer:
Explanation:
The climate of Ireland is mild, humid and changeable with abundant rainfall and a lack of temperature extremes. January and February are the coldest months of the year, and mean daily air temperatures fall between 4 and 7 °C (39.2 and 44.6 °F) during these months.
How are flagella in unicellular organisms like legs in humans??
Cilia and flagella are more closely related, as they are both like hairy extensions from the cell membranes. However Cilia (singular: cilium) are much shorter and are arranged in multiple groups, working together in coordinated manner to create movement along the cell membrane (kind of like the legs of a centipede).
LAKKI DYNAMITE SURPASSED 1 BILLION VIEWSSSS
#DYNAMITEHITS1BILLION
#BTS
Number Talk.
Armadillos have 32 pairs of chromosomes
18. What is the diploid number (2n) for the somatic cells of armadillos?
19. How many chromosomes are present at the beginning of mitosis in an armadillo cell?
20. How many chromosomes are present in each daughter cell at the end of mitosis?
If Armadillos have 32 pairs of chromosomes;
The diploid number (2n) for the somatic cells of armadillos is 64There will be 64 chromosomes at the beginning of mitosis in an armadillo cell. There will be 64 chromosomes in each daughter cell at the end of mitosis.MITOSIS:
Mitosis is the process by which a single cell produces two daughter cells that are genetically identical to one another. Mitosis results in daughter cells that possess the same number of chromosomes as the parent cell.This means that if Armadillos have 32 pairs of chromosomes i.e 64 chromosomes. The following applies:
The diploid number (2n) for the somatic cells of armadillos is 64There will be 64 chromosomes at the beginning of mitosis in an armadillo cell. There will be 64 chromosomes in each daughter cell at the end of mitosis.Learn more at: https://brainly.com/question/12327654?referrer=searchResults
which protects the dna of a virus
A pilus
B plasmid
C bacteriophage
D capsid
A capsid is a protein shell that protects the DNA of a virus. The correct answer is D) capsid.
What is a capsid ?A capsid is a protein shell that encases the genetic material (either DNA or RNA) of a virus. It is a protective layer that helps the virus survive in harsh environments and protects its genetic material from damage by environmental factors such as UV light, enzymes, and other harmful substances. Capsids can be composed of one or more types of proteins and can take different shapes and sizes depending on the type of virus.
In addition to the capsid, some viruses may also have other protective structures or mechanisms that help them survive in their host environment. For example, some viruses have a lipid envelope that surrounds their capsid, which helps them enter and exit host cells more easily. Others may have other protective layers, such as a protein coat, that help them resist immune system defenses.
It is worth noting that neither A) pilus nor B) plasmid nor C) bacteriophage protects the DNA of a virus. A pilus is a hair-like structure found on the surface of some bacteria that helps them attach to other cells or surfaces, while a plasmid is a small circular piece of DNA that is separate from the bacterial chromosome and may carry genes that confer antibiotic resistance or other advantageous traits.
Hence, Bacteriophages are viruses that infect and replicate within bacterial cells, but they do not protect the DNA of other viruses.
Learn more about DNA at:
https://brainly.com/question/264225
#SPJ5
Which amino acids do the following codons encode - UUC,
UCU, CUU?
The amino acids which are encoded by the following codons are UUC- Phenylalanine, UCU- Serine, and CUU- leucine amino acid.
What are codons?
A codon is a DNA or RNA sequence which is made up of three nucleotides that forms a unit of the genomic information that encodes for a particular amino acid or signaling the termination of protein synthesis i.e., stop signals in a cell. There are about 64 different codons of which 61 specify amino acids and 3 are used as stop codons that terminate translation process. The 61 codons codes for 20 amino acids in the human beings.
The codons given in this case encodes for different amino acids which are UUC encodes for phenylalanine, UCU encodes for serine amino acid, and CUU encodes for leucine amino acid.
Learn more about Codons here:
https://brainly.com/question/9382652
#SPJ2
How would the overfishing solution be implemented?
Answer:
Implementing the limit of the fish catch number is one of the best ways to reduce overfishing. By limiting the fish catch, the government and other organizations could help the fish population to recover and breed another fish. So the fish population will not extinct.
Explanation:
Describe one feature that a spreadsheet has
that a database does not have.
True or false. Can you provide any evidence?
1. When species come into contact with closely related species, they interbreed and become one species again
2. Medium ground finches with relatively large beaks tend to have offspring with relatively large beaks
3.Birds with a beak type poorly shaped for the current environment are able to adapt by changing their beak types
4. Speciation, or the evolution of new species, in Galapagos finches results because natural selection favors different beak types on different islands.
False When species come into contact with closely related species, they interbreed and become one species again.
What process lead to the speciation of the Galapagos finches on the different islands?
All of them grew from one progenitor species, which inhabitated the islands only a few million years ago.
This process, whereby species develop rapidly to use empty ecospace, is called as adaptive radiation.
Thus, its false, When species come into contact with closely related species, they interbreed and become one species again since its an example of evolution.
To learn more about evolution click here:
https://brainly.com/question/13492988
#SPJ2
Answer give in Nepali How carbon dioxide is necessary for photosynthesis
Answer:
❤----------------------------------------------------------------------------------------------------------❤
Carbon dioxide is necessary for photosynthesis in plants. It is so necessary because it combines with water to form glucose or carbohydrates which are incredibly important for plants to provide energy. If they were to not take in carbon dioxide, then they would also not give oxygen which is the most essential for humans.
❤-------------------------------------------------------------------------------------------------------❤
Neplai Version: बोटहरूमा प्रकाश संश्लेषणको लागि कार्बन डाइअक्साइड आवश्यक हुन्छ। यो यति आवश्यक छ किनभने यसले पानीसँग मिसाएर ग्लुकोज वा कार्बोहाइड्रेट बनाउँछ जुन बोटबिरुवाहरूको लागि शक्ति प्रदान गर्न अविश्वसनीय रूपमा महत्त्वपूर्ण हुन्छ। यदि तिनीहरूले कार्बन डाइअक्साइड लिदैनन् भने तिनीहरूले अक्सिजन पनि दिदैनन् जुन मानवहरूको लागि सबैभन्दा आवश्यक हो।
❤----------------------------------------------------------------------------------------------------------❤
Explanation:
Why will crust subduct beneath continental crust.
What are gametes? How are gametes different from regular body (somatic) cells?
Answer:
Gamtetes are sex cells, for humans, this manifests as the sperm cell and the egg cell.
Explanation:
Gametes are haploid cells unlike most of our body cells that are diploid cells.
Sedimentary rocks are formed due to the
cooling of magma
weathering of rocks
changes in pressure
changes in temperature
Answer:
weathering of rocks
Explanation:
Answer:
Changes in pressure
Explanation:
Sedentary rocks are rocks that are often found in hillsides or creeks that have washed away surrounding sediment.
what does gradiant mean in biology
Answer:
The difference in the concentration of a substance between two areas is called the concentration gradient . The bigger the difference, the steeper the concentration gradient and the faster the molecules of a substance will diffuse.
Explanation:
Hope it helps! Correct me if I am wrong :>
Im sure about my answer :>
If you dont mind can you please mark me as brainlest?
Suggest why energy from the sun flows in one direction while materials are cycle within an ecosystem
Answer:
Energy flow in an ecosystem is unidirectional. It means that energy which is absorbed by the producers from sun and is converted into chemical energy, always flow from a lower trophic level to a higher trophic level as in a food chain when herbivore consumes producers the energy is transferred from producers to consumers and so on. Some of this energy is assimilated some is used by the organism and some is dessipated in the environment but the flow of energy is never reverted, that is obviously a producer can not consume a consumer.
During asexual reproduction, the offspring are....
genetically different from the parent
genetically different from each sibling
genetically identical to the parent
none of the above
Answer:c
Explanation:
Genetically identical because it is a replica of the parent
Many plants can reproduce both sexually and asexually. For example, rose bushes reproduce asexually when cuttings planted in the ground grow roots and become a new rose bush. They can also reproduce sexually when their flowers are pollinated. What is the primary advantage of sexual reproduction in roses?
A. Roses reproduce more quickly when reproducing sexually.
B. Roses can produce more offspring in sexual reproduction.
C. Roses produced through sexual reproduction have more genetic variation.
D. Roses can reproduce sexually without the use of gametes.