Answer:
Making anti-viral drugs is more difficult than making anti-bacterial medicines because viruses have very few biochemical mechanisms of their own. They make use of host machinery which replicates. So it is very much difficult to find the targets where these drugs get interfered by not making any harm to the host. Thus, it is not easy to design an antiviral drug with high safety and effectiveness.
Explanation:
And i would say virus is a parasites but not a living parasite according to md
Answer:
Because antivirals can damage host cells where the viruses reside.
I hope this helps
all viruses are obligate parasites,that is they lack metabolic machinery of their own to generate energy or to synthesize proteins,so they depend on host cells to carry out these vital functions...
What is the term for a preserved footprint left behind by an animal?
O A. Embryo
O B. Code
O C. Fossil
O D. Isotope
Answer:
A fossil.
It would be C
Anyone help please lord please
Answer:
Explanation:
Gram positive stains are purple; gram negative are pink; cocci bacteria are spherical; the other is rod. There you go!
........ provides genetic continuity from generation to generation.
a) sexual reproduction
b) fusion of gametes
c) asexual reproduction
d) meiosis
Answer:
d) meiosisExplanation:
The process of meiosis preserves genetic continuity for future offspring by ensuring that two sexually reproducing organisms produce offspring that have the same number of chromosomes as the parents.
It ensures that the offspring will be able to mate with other organisms of the same species.
Which factor best explains why liquid water exists on earth
Answer:
due to atmospheric pressure
Answer:
Atmospheric pressure
Explanation:The only planet that have water bodies is earth. We know that water is one of the important factors for all living organism. Liquid water exists on the earth's surface is due to the atmospheric pressure
how is erythrocytes an advantage in exchanging and carrying
Answer:
Shape of Red Blood Cells Erythrocytes are biconcave discs with very shallow centers. This shape optimizes the ratio of surface area to volume, facilitating gas exchange. It also enables them to fold up as they move through narrow blood vessels.
magine that a scientist takes a group of Anolis lizards and introduces them into an enclosure at a research facility in continental South America. He notes that the lizards thrive in this new environment. The fact that Anolis lizards could survive in habitats outside of the Caribbean is a reflection of their ____ niche; their _____ niche is determined by their ability to disperse to other areas as well as predation and resource availability.
Answer: Fundamental, realized
Explanation:
The realized niche of a species is usually the result of predation, competition, and other types of interaction between species.
The size of realized niche is determined by interspecific competition .The fundamental niche is larger than the realized niche.
The fundamental niche represents all the habitats where a species could possibly live, but competition among different species usually restricts a species to a smaller area, which is the realized niche
Which three of the following choices are examples of commons?
O A. The night sky
O B. State parks
O C.Personal computers
O D. A neighbor's swimming pool
O E. Clean air
Answer:
A
B
E
Explanation:
Commons are land or resources belonging to or affecting the whole of a community.
A geologist finds some tilted sedimentary rock layers.
Which conclusion can the geologist draw by looking at the rock layers?
1.Their absolute age is 600 million years.
2.They were tilted before they were deposited.
3.They were originally deposited horizontally.
4.The youngest layer was originally deposited as the bottom layer.
Answer:
Angular unconformity also causes geologic tilting. Angular unconformity occurs when parallel strata of sedimentary rocks are deposited on layers that are tilted, perhaps as a result of erosion. So the answer I think is B/2.
Explanation:
Plz don't be mad if i'm wrong
Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional
questions.
Online Content: Site 1
Online Content: Site 2
What changes can occur in an aquatic ecosystem as a result of nutrient loading? (Site 1)
Answer/Explanation:
Essential nutrients such as nitrogen, phosphorus, at specific moderate level are needed for the overall functionality of the aquatic ecosystem. However, when excess of these elements infiltrates the aquatic ecosystem, the nutrient overload causes a surge in the growth of aquatic plant. For example, algal bloom. These increased growth of aquatic plant further takes up space and oxygen, prevents sunlight and later leads to what is known as "dead zone". It is a condition of an ecosystem having little or no biological activity. Aquatic life is impacted negatively when this occurs.
These are the changes that occurs as a result of nutrient loading.
¿Cuál de los siguientes niveles es el sucesor del nivel tejido?
A.
Órgano.
B.
Sistema.
C.
Organismo.
D.
Célula.
C. Órgano
Porque Célula→Tejido→Órgano→Sistema→Organismo
How does the natural process of meiosis support evolution?
A. Each daughter cell mutates its own DNA during Reduction Division to produce more variation.
B. Each daughter cell is unique, providing natural variation.
C. Each daughter cell is identical, providing natural variation.
D. It does not support evolution.
During meiosis, each daughter cell tends to undergo mutation of its own DNA and leads to more variation. The correct option is A.
What is meiosis?Meiosis is a sort of cell division that occurs in organisms which reproduce the fusion of gametes and results in a diminution in the number of chromosomes in gametes. Body cells in humans are diploid, with two sets of chromosomes.
Meiosis is a process of cell division that produces 4 gamete cells while reducing the number of chromosomes in the parent cell by half.
This process is essential for the generation of egg and sperm cells for reproduction.
Meiosis reduces the number of chromosomes in a cell by half while also generating new allele pairings that are dispersed across daughter cells via segregation and recombination.
This genetic reshuffling, which is thought to be the basis of reproduction success, reduces genetic affiliations within and between loci.
Thus, the correct option is A.
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If intelligence is so useful, why do so few species have it?
Explanation:
Could intelligence simply be unlikely to evolve? Unfortunately, we can’t study extraterrestrial life to answer this question. But we can study some 4.5 billion years of Earth’s history, looking at where evolution repeats itself, or doesn’t.
What is the other side of the following DNA strand: ACCTGGTAACGT
Answer:
TACGGCA
Explanation:
We want to find the complementary strand of
ATGCCGT
.
Remember that
A
is adenine,
G
is guanine,
C
is cytosine, and
T
is thymine.
Adenine always bonds with thymine, and guanine only bonds with cytosine. In
RNA
however, uracil
(
U
)
is substituted for thymine instead.
So, in translation, adenine turns into thymine, and guanine turns into cytosine, and vice-versa.
So, the complementary side would read
TACGGCA
.
Two words you hear in science a lot are hypothesis and theory. What is the difference?
Group of answer choices
Theory is another word for fact; hypothesis is another word for guess.
Theories have been confirmed through tests; hypotheses have not been tested
Hypotheses cannot be proven; theories can
Theories may cover many hypotheses; a hypothesis contains only one theory
Answer:
Theories have been confirmed through tests; hypotheses have not been tested.
Explanation:
Theories have to be proven, whilst hypotheses is an experiment that is carried out without yet knowing the outcome.
anyone help me please
Answer:
The human body is controlled by a network of living wires called the nervous system.
¿Como se llama ?
1.- Embrión se desarrolla dentro del sistema reproductor femenino.
2.- Formación de un organismo a partir de huevos
Answer:
1. Vivíparo
2. Ooviparismo
Explanation:
Viviparismo se define como el proceso de desarrollo de un animal en el cual el embrión crece dentro dentro del sistema reproductor femenino en una estructura acorde que le permite obtener alimento y oxígeno hasta su nacimiento. El viviparismo placentario es el tipo de desarrollo más extendido entre mamíferos (por ejemplo, perros, caballos, gatos, conejos, etc), a excepción de mamíferos que son ovíparos (por ejemplo, el ornitorrinco) y los mamíferos marsupiales que no poseen placenta y donde feto se desarrolla en una bolsa externa llamada marsupio (por ejemplo, los canguros). Por otra parte, el oviparismo es un mecanismo de desarrollo en el cual el embrión crece dentro de un huevo desde el momento que la hembra lo expulsa hacia el exterior. Cuando se produce este suceso, los embriones se encuentran muy poco desarrollados y por lo tanto deben cumplir su ciclo de crecimiento (hasta eclosionar del huevo) fuera del vientre materno. Algunos ejemplos de animales ovíparos incluyen anfibios, reptiles, aves, insectos, etc.
A cell membrane is bigger a specific about what allows across how does this help the cell
Answer: It helps the cell absorb as many different molecules as possible.
Explanation: the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
Which of the following particles has a negative charge?
A. Electron
B. Nucleus
C. Proton
D. Neutron
compare and contrast between pyriformis and fibula.Pls give right answer
Answer:
Tibia and fibula are the two long bones located in the lower leg. The tibia is a larger bone on the inside, and the fibula is a smaller bone on the outside. The tibia is much thicker than the fibula.
During production of a drug, all work area surfaces must be disinfected using sterilized disinfectants. Which of the following statements about disinfectants are true? Select all that apply. View Available Hint(s)for Part A Disinfectants destroy all microbes present on a surface. Disinfection can be used to treat work surfaces as well as workers (i.e., washing hands). Disinfection can occur by physical or chemical means. Disinfectants are used to inhibit or destroy pathogens. Endospores and viruses can resist disinfectant treatment.
Answer: The correct options are
--> Disinfectants are used to inhibit or destroy pathogens,
--> Disinfection can occur by physical or chemical means,
--> Endospores and viruses can resist disinfectant treatment.
Explanation:
To prevent infectious diseases from spreading or to sterilise work area surfaces during the production of drugs, chemicals known as disinfectants as used. These are chemicals that kill or inhibit the growth of pathogens. Other chemicals such as antiseptics can also kill and prevent the growth of mainly pathogenic microorganisms. However, disinfectants are stronger chemicals than antiseptics and so are often used on non-living things and surfaces.
Disinfection does not necessarily kill all microorganisms, especially resistant bacterial spores (endospores) and viruses, so it is less effective than sterilisation.
There are generally two methods of disinfection:
--> The chemical method: A typical example of a chemical disinfectant is the carbolic acid. It is used for disinfecting lavatories and floors.
--> The physical method: here, physical agents are use to disrupt and damage the pathogenic organisms on work surfaces. Some typical example include: UV irradiation, heat, sunlight exposure, sonic or hydrodynamic pressure and radiation.
what is photosynthesis
and precipitating??
Answer:
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activitie
In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravitational pull from clouds. The main forms of precipitation include drizzling, rain, sleet, snow, ice pellets, graupel and hail.
Explanation:
I hope this answers is helpful to you
describe the primary differences between plant and
animal cells. Be sure to include a discussion of the various organelles specific
to each cell and how they differ between plant and animal cells
Explanation:
plant cells have cell membrane and cell wall while animal cells only have the cell membrane missing the cell wall
What type of animal eye is this? Who's is it?
Q.. (a) Name the group of bacteria the presence of which confirms the contamination of water of a river. (6) Write one negative effect of affluent lifestyle of few persons on the environment. (C) List two items which can easily be recycled, but we generally throw them in the dustbins.
Answers:
(a) Eschericia coli(b) Overusing of natural resources results ultimately in their depletion and decrease in supply. (c) typically metal cans and paperWHAT DO U MEAN BY HYBRIDS!
Answer:
I don't know what I mean by hybrids
Explanation:
Answ:
Como híbrido podemos designar a todo aquel individuo que es producto del cruce de dos organismos de distinta especie. Así, en biología, un híbrido puede ser un animal o un vegetal que es resultado del cruce de dos progenitores de distinta especie que, sin embargo, pueden producir progenie.
Explanation:
how many seasons are there in australia and mention the name of the season!!!
.... thanks
Answer:
there are 4 seasons in australia.
Explanation:
they are summer, autumn and winter and spring.
__Igneous rocks form below Earths surface
Answer:
intrusive igneous rocks
what happens during anaphases?
Answer:
During anaphase, each pair of chromosomes is separated into two identical, independent chromosomes. The chromosomes are separated by a structure called the mitotic spindle. … The separated chromosomes are then pulled by the spindle to opposite poles of the cell.
Which accepted hypothesis about the origin
of life on Earth explains how all organisms
share a common genetic code?
The first life was self-replicating RNA has an accepted hypothesis about the origin of life on Earth and explains how all organisms share a common genetic code.
What is genetic code?
The genetic code is the language that our body utilizes to translate the DNA instructions from our genes into the building blocks of life. Given that mRNA is the messenger that sends information from the DNA to the location of protein synthesis, it is frequently explained using the "codons" contained in mRNA.
In the end, the genetic code serves as the foundation for everything in our cells. Our DNA serves as a storage medium for the information that is passed down from parent to kid, or what is known as our hereditary information. The RNA and proteins produced from that DNA are later employed to create cells, tissues, and organs.
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Which type of chromosomal mutation
results in the reversal of a part of a
chromosome?
A, inversion
B. deletion
C. duplication
Answer: inversion, because I clicked on deletion and it was incorrect. I also tried duplication and it was also incorrect so please choose inversion.
Explanation:
