Answer: This statement ("antibiotics kill bacteria so they must kill healthy human cells too and they must be avoided at all costs!") is wrong and can be proven to be so in the following explanation about the mode of actions of antibiotics.
Explanation:
Antibiotics are drugs which are used for the treatment of diseases caused by bacteria microorganisms. According to their mode of action, they can either be bactericidal or bacteriostatic.
Bacteriostatic antibiotics work by binding to enzymes needed by bacteria to build proteins essential for their own growth and reproduction. Atypical example is the antibiotics, sulfonamide. This drug acts by inhibiting a critical enzyme called dihydropteroate synthase which are specific to the metabolic pathway of the bacteria cells for the synthesis of folic acid. This causes the bacteria to stop growing. Together with the actions of the immune system, the bacteriostatic actions of the antibiotics can effectively stop am infection without affecting the host cells.
Only laboratories BSL-3 and higher require fire extinguishers, emergency showers and eye wash stations.
Answer:
false
Explanation:
Fire extinguishers, emergency showers and eye wash stations are basic safety elements that must be present in all laboratories, regardless of their classification. This is because these are essential elements for common accidents in laboratories and can be easily solved with their presence.
why are calendar years rounded
Answer:
The differences arise because it actually takes the Earth around 365.25 days to make a full orbit. This value is rounded down for the sake of our timekeeping.
Explanation:
how would you describe what the cells of each stage of the cycle look like ? what are the visible features of the cells.
Interphase, Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis
Interphase:
Is known as the resting stage. Replication of DNA occurs.
- G1
-S
-G2
Prophase:
The chromosomes are visible, centrioles are formed and begin to move to opposite sides. This is where you see the dissolving of the nuclear membrane.
Metaphase:
The chromosomes line up in the centre of the cell.
Anaphase:
This when the cell divides (should look like two circles splitting) you will see the spindles begin to shorten which pull chromatids apart.
Telophase:
The nuclear membrane is reformed.
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The hours of daylight can vary greatly because of latitude. How would being near the equator shape the amount of sunlight per day in those countries? Explain your answer.
Answer:
Explanation:
The amount of daylight that is received is directly proportional to how close the sun is to each hemisphere. This happens due to Earth's inclined axis which changes as the Earth rotates and causes more daylight in the Northern or Southern hemispheres which is when summer starts in each. That being said the Equator is the only location that has an even amount of sunshine all year round. This is why it is always hot and Equator cultures only recognize dry and wet seasons but still consider it summer all year round.
which statement correctly describes how the amount of ofoxygen in the earth’s atmosphere has changed over time?
Answer:
Based on the relative volumes of the gases in Earth’s atmosphere, nitrogen is actually more than 3 times more than oxygen. Because the troposphere is the lowest atmosphere layer, it contains 75 percent of the atmosphere’s mass.. From largest to smallest, Earth’s atmosphere composition contains nitrogen, oxygen, argon, CO 2 and trace gases.
Explanation:
A cell that is placed in distilled (plain) water will swell up because it fills
with water. Which process causes the cell to swell?
Answer:
If a cell is placed in a hypotonic solution, water will move into the cell. This causes the cell to swell, and it may even burst. A hypertonic solution means the environment outside of the cell has more dissolved material than inside of the cell. If a cell is placed in a hypertonic solution, water will leave the cell.
Explanation:
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A) Yes,because the amino acid changed.
B) Yes,because every mutation changes the amino acid .
C) No , because the amino acid not change
ASAP
Answer: B
Explanation:
How can knowledge of cell structure and function help in the fight against infectious
diseases?
Answer:
if you know how a cell functions then you know where it can potentinally be injured or killed.
Explain how diffusion is used to support the life processes of animals.
Answer:Diffusion is important to cells because it allows them to gain the useful substances they require to obtain energy and grow.
Explanation:Diffusion is important to cells because it allows them to gain the useful substances they require to obtain energy and grow, and lets them get rid of waste products. This table shows examples of substances required by cell and associated waste products.
I’ll mark as BRANLIEST!!
30 POINTS!!
Please help me!!
Answer:
They are complimentary DNA strands of each other
I remember them via AT (AT-AT from Star Wars and this gets you 2 H bonds) and CG (cross guard light saber, the ridiculous one with the helm of the sword having it's own light saber so it is crossed and has 3 H bonds). Ridiculous makes things more memorable imo.
Explanation:
Which is a carbohydrate monomer
O glucose
O sucrose
O glucagon
O glycogen
Answer:
sucrose
\
Explanation:
The dandelion is a successful weed. Explain why its adaptations make it a better competitor than many other plants on a school field or a garden lawn.
Answer:
The correct answer is - dandelion weeds adapted many tricks to reduce all other competitors as it is invasive species.
Explanation:
The dandelion is a successful weed. It's got a lot of adaption to eliminate or dominate other plants and weeds, such as ethylene gas released by its rosette of leaves that prevent other plants from growing near dandelion.
Seeds of dandelion also adapted seed dispersion tactic by seed-parachutes into the wind. Dandelion weed does not require to be pollinated and rapidly increases their numbers. Dandelion has a taproot that goes deep into the soil, up to three feet down for water and nutrients.
Riddle Time! What do you call a cow with no legs? This question is solely for the purpose of getting points. Incorrect answers don't even matter.
Answer:
lol
Explanation:
thx for the points!
Answer:
Ground beef.
Explanation:
You can blame Teen Titans Go! for me knowing that. I didn't even like the show and I remember that smh
Haploid sperm and egg are produced via meiosis. What process is responsible fro producing the 2N zygote?
A. Differentiation
B. Fertilization
C. Replication
D. Transcription
Answer:
Explanation:poda
Answer:
c
Explanation:
6. How does Widder tell the difference between the species she observes in the deep ocean? Give an example of a species she identifies based on this observation.
Widder can identify different species by observing the differences in:
ColorShapeSizeAmong others.What is a specie?The word specie is used in biology to refer to a group of organisms that can reproduce consistently as they share the same taxonomy.
How can Widder identify different species?Identifying species is possible through multiple techniques that include:
Analyzing the genes of the organism.Identifying species based on observation.In the case of observation, which is a common technique. The best is to observe the physical characteristics of the organism that can make it different from other species. This includes observing:
Shape ColorSizeBehaviorAmong others.Note: This question is incomplete because there is no information about the species Widder is observing. Due to this, I answered it based on general knowledge.
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Answer: Edith Widder uses the bioluminescence (light) produced by the different sea creatures to identify their various species. For example, during her talk, she mentions a fish with a headlight behind its eye that retracted like a Lamborghini’s headlight. She also describes a Christmas tree fish where everything lights up, including the jewel-like organs in its body.
Explanation: This question comes from the TED talk "Glowing life in an underwater world" by Edith Widder. During her talk, she vividly describes her experience seeing sea organisms that display bioluminescence in the ocean.
The instructions, or 'code', in our DNA is dependent upon the order of the _____ in the DNA
-phosphates
-proteins
-bases
- sugars
Answer:
C. Bases
Explanation:
Deoxyribonucleic acid, commonly known as DNA, is the a type of nucleic acid that serves as the genetic material in living organisms. DNA holds information or instructions needed for the synthesis of useful products like proteins that is responsible for growth, reproduction, and general survival of organisms. Hence, it is referred to as the "BLUEPRINT OF LIFE".
However, in the structure the of the DNA molecule, it contains certain monomeric building blocks called NUCLEOTIDES. These nucleotide bases are of four types namely: Adenine, Thymine, Guanine and Cytosine. It is upon these order of nucleotide bases that instructions, or 'code', in our DNA is dependent upon.
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Which processes directly connect the ocean to the water cycle?
A) Condensation and runoff
B) Precipitation and melting
C) Evaporation and condensation
D) Evaporation and precipitation
Answer:
D
Explanation:
I took the test for flvs, it was correct.
The process that directly connect the ocean to the water cycle is evaporation and precipitation. The correct option is D.
What is water cycle?The water cycle is a biogeochemical cycle that describes the continuous movement of water on, above, and below the Earth's surface. It is also known as the hydrologic cycle or the hydrological cycle.
The water cycle depicts the continuous movement of water within the Earth's and atmosphere's atmosphere.
It is a complicated system with numerous processes. Liquid water evaporates into water vapour, condenses into clouds, and falls back to earth as rain and snow.
The water cycle describes the exchange (cycling) of water through Earth's land, ocean, and atmosphere. Evaporation and precipitation are the processes that directly connect the ocean to the water cycle.
Thus, the correct option is D.
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The effect on an organism or population of chemical exposure is called __________.
A)
natural hazard
B)
gene-environment interactions
C)
physiology
D)
dose response
E)
heredity
Which characteristics are common to most salamanders? Check all that apply.
They undergo internal fertilization.
They lose their tails as adults.
They have wet, moist skin.
They have long, strong legs.
They begin life with gills.
Answer:
Its C,D,A
Explanation:
:)
what is the cell theory
Answer:
a theory in biology that includes one or both of the statements that the cell is the fundamental structural and functional unit of living matter
1. Which layer of the atmosphere has:
a. the most water vapor?
b. the lowest pressure?
2. What remains the same in different layers of the atmosphere?
3. Scientists have divided the earth's atmosphere into different layers. What property of the atmosphere do you think these divisions are based on?
4. You collected data on four layers of the atmosphere. The atmos- phere merges into outer space in an extremely thin upper layer known as the exosphere. Which of the five layers of the atmos- phere do people live in?
Answer:
question 1- a. troposphere b. mesosphere
question 2- Earth's atmosphere is similar to a jacket for our planet. It surrounds our planet, keeps us warm, gives us oxygen to breathe, and it is where our weather happens.
question 3- temperature because Scientists divide Earth's atmosphere into four main layers classified according to changes in temperature.
question 4- Troposphere
Explanation:
What are some of the differences between a forensic autopsy technician and a forensic pathologist assistant?
Answer:
The differences between a forensic autopsy technician and a forensic pathologist assistant are as follows:
Forensic autopsy technician generally work in morgues and hospital while forensic pathologist assistant work in research laboratories and hospital laboratories.Forensic autopsy technician are responsible to prepare the dead body for autopsy while Pathology assistants do research on the tissues of body.Autopsy technician handle morgue examination area, while pathology assistants handles laboratory examination area.When there is little water in its habitat, the walking catfish can use its pectoral fins to move on land. Which of these will MOST LIKELY happen to a population of walking catfish if over millions of years all surrounding water dries up?
A. The population is likely to evolve to have weaker pectoral fins.
B.
The population is likely to evolve to have stronger pectoral fins.
C.
Walking catfish with stronger pectoral fins and those with weaker pectoral fins will both become extinct.
D.
Walking catfish with stronger pectoral fins and those with weaker pectoral fins will both survive, so evolution is unlikely to occur.
Answer:
B
Explanation:
its maybe the most common sense
For a certain plant, purple flowers (allele: P) are dominant and white flowers (allele: p) are recessive. A heterozygous purple plant is crossed with a true-breeding (purebred) white plant. What are the possible genotypes (allele pairs) of the offspring?
The possible genotype of all the offspring will be PP, and Pp as per the given situation.
What is genotype?An organism's genotype is made up of all of its genetic components. The alleles or variations that an individual carries in a specific gene or genetic region are also referred to as the genotype.
The term "genotype" broadly refers to an organism's genetic make-up; in other words, it characterizes an organism's whole gene pool.
The phrase can also be used to describe to the alleles, or different forms of a gene, that an organism carries in a more specific meaning.
In the Punnett square attached, the genotype of the organism is PP and Pp, which means the generation will be having purple flower.
Thus, the possible genotype will be 50% PP and 50% Pp.
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What are 2 facts about energy?
Energy can neither be created nor destroyed.
Energy can only be changed from one form to another.
HELP i need help with this it’s due today
Answer:
It is A, as higher elevations are colder in climate
Explanation:
In which phase of mitosis do the sister chromatids get pulled apart to opposite ends of the cell?
Answer:
i don't know answer for this
Answer:
Telophase
Explanation:
Which characteristic is true of sexual reproduction but not of asexual reproduction?
Answer:
sexual reproduction involves to organisms
Explanation:
Scientists compare the structures of a chicken embryo and a human embryo at the same stage of development. They find that both vertebrates have similar shapes and structures, including the presence of gill slits and tails. How is this comparison of the embryos used as supporting evidence of evolution?
Answer:c
Explanation:
c
Embryology is used in evolution because similar structures often also exhibit a common evolutionary origin.
Embryology refers to the discipline that studies the early development of an organism.Evolution is a biological process associated with descendence with modification, thereby evolutionary close organisms share similar features.Embryology often evidences evolutionary relationships due to the resemblance between structures found in different organisms.In conclusion, embryology is used in evolution because similar structures often also exhibit a common evolutionary origin.
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Why is it important that the stigma be made of a sticky material?
Answer:
Most stigmas are covered with a waxy, sticky substance. This wet substance allows stigmas to provide an important service by re-hydrating dry pollen to prepare the grains to enter the ovary and initiate the process of fertilization.
Explanation:
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But do not copy this or I will report you. I swear.