As gram-negative bacteria have an extra layer of cell wall therefore it is less sensitive towards antimicrobial chemicals than gram-positive bacteria.
Why gram-positives are less impervious to the action of antimicrobial chemicals?Gram-positive bacterial cell wall is made up of only the peptidoglycan layer and it does not have an extra barrier that protects it from some antimicrobial chemicals.
Gram-negative bacteria have two layers of cell wall peptidoglycan layer and a lipopolysaccharide layer.
Thus, gram-negative bacteria have an extra layer of cell wall.
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The process by which small, measurable changes occur in a population from generation to generation is called ____________ , while changes in populations over long periods of time refer to the process of ____________ .
Answer:
microevolution,
macroevolution
Explanation:
The process by which small, measurable changes occur in a population from generation to generation is called microevolution, while changes in populations over long periods of time refer to the process of macroevolution.
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4
Which statement below would best illustrate the concept of natural selection?
A
an organism can return to the characteristics of its ancestors
B a population of animals will move from one region to another
those organisms that are best adapted to the environment will survive to produce more offspring
Dall organisms are made up of cells
Answer:
the answer for this particular question is B
Explanation:
B
A spongelike, brown material is ______. It is made of partly decomposed plants.
A) biomass
B) ethanol
C) geothermal
D) geyser
E) peat
Answer:
E. Peat
Explanation:
Peat is decomposed plants that can be used for fuel.
Answer- E) peat
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Astronomy
Consider the impact that space has on the human body and compare and contrast that impact to the toll that regular day-to-day life in an office and sitting at a desk has on the human body.
Sitting on a desk in an office can affect the circuation of blood in the human body.
What are the effects of space on the body?We know that space is the region above our atmosphere where there is a deficiency of oxygen.
If the body is exposed to this condition, a condition know as hypoxia could result. Sitting on a desk in an office can affect the circuation of blood in the human body.
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Which of the following is an example of a consumer? A. water B. Plant C. Rock D. Fish
Answer:
Fish
Explanation:
Fish eat they don't produce their own food.
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Describe the two factors that influence the rate of weathering of rock
Answer:
rainfall and the hot temperature
Explanation:
High temperatures and a lot of rainfall increase the rate of chemical weathering.
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What if anything, does the bee get from its relationship with the flower
Answer: supply of food \_(^-^)_/
Explanation:
Which wire, when current flows through it, would be surrounded by the strongest magnetic field?
The current flows through it, would be surrounded by the strongest magnetic field towards north.
How does the right hand rule apply?This relationship is represented by the right-hand rule: the thumb of the right hand indicates the conventional direction of electric current; and the other fingers, by wrapping the conductor through which the current passes, give the direction of the magnetic field lines
By right-hand rule, if the right-hand thumb points in the direction of a current, the magnetic field at a point will be given by the direction of curl of fingers at that point.
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what is the overall reaction ( equation ) for photosynthesis?
Answer:
6CO2 + 6H2O → C6H12O6 + 6O2
Explanation:
The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products. Credits to Britannica.com
What is the role of oxygen in aerobic respiration?.
The role of oxygen in an aerobic respiration is to break down glucose
Gerald performed an experiment to determine if photosynthesis was affected by the color of light that a plant received. The data from his experiment are shown in the table below.
Color of Light
Number of plants
Average volume of oxygen produced (mL)
green
4
0.50
orange
4
2.0
blue
4
5.0
Which format should he use to present his data?
bar graph
chart
line graph
pie graph
Why is a tightly condensed shape of
DNA needed for cell division?
A. to move it more easily
B. tmallow gene access
C. to be replicated
D. to keep it in the nucleus
Answer:
A.
Explanation:
it should be to move it more easily.
Answer:
D. To keep it in the nucleus
Explanation:
DNA molecules are packed up into chromosomes. DNA is tightly packed up to fit in the nucleus of every cell.
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In the hierarchy of organisms, the ecosystem
level is the first that includes which of the
following?
A. biotic factors
B. abiotic factors
C. niches
Answer:
B
Explanation:
In the hierarchy of organisms, the ecosystem level is the first that includes abiotic factors. The correct option is B.
What is a hierarchy of organisms?
The systemic classification of organisms into levels, such as the Linnaean taxonomy, is referred to as biological hierarchy (a biological classification set up by Carl Linnaeus).
It arranges living things into kingdoms, phyla, classes, orders, families, genus, and species in order of decreasing complexity. The eight levels of the present taxonomic hierarchy, from lowest to highest, are as follows: species, genus, family, order, class, phylum, kingdom, and domain.
A multicellular organism's body is organized at many levels, beginning with the cell. Organs are formed from tissues, which are composed of cells. Organs are arranged into organ systems, and then an organism is formed.
Therefore, the correct option is B. abiotic factors.
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What is the reason food molecules aren’t in Hydroponic plant food
Answer:
stem cellls?
Explanation:
Water and hydroponic plant food do not have food molecules inside them according to food labels and food indicator experimental results.
The genetic material of an organism is composed of:.
The genetic material of an organism is composed of DNA And RNA.
DNA(Deoxyribo Nucleic Acid)is the hereditary materials in humans and almost in all organisms.
RNA(Ribonucleic Acid)is a linear molecule composed of four types of smaller molecules called ribonucleotide bases.
What does it mean that Oxygen and Water can exist in a gas state but at vastly different temperatures?
Answer: Water molecules are strongly attracted to each other, so they remain condensed (that is, a liquid, and not a gas) at higher temperatures. Dihydrogen and dioxygen have no strong attractive forces to hold the molecules together, so they exist as gases at room temperature and pressure (that is, in our everyday lives).
Explanation:
3The graph below shows rate of reaction data for 2 different enzymes. One of these enzymes are
found in the stomach, the other is found in the mouth
Rate of reaction
pH
Which of these lines is more likely to indicate the enzyme found in the stomach? Explain your answer.
Why is gas exchange (think oxygen and carbon dioxide) necessary?
Answer:
Gas exchange allows the body to replenish the oxygen and eliminate the carbon dioxide.
what is the shortest wavelength?
Answer:
Violet or blue light has the shortest wavelength, making them more potent. Red or orange light have longer wavelengths, which makes them less potent.
I hope this helps :)
Explanation:
Answer:
Gamma Rays
Explanation:
Gamma rays have the shortest wavelength and the highest energy among the other waves in the electromagnetic spectrum. The wavelength of the gamma rays is less than 0.01 nanometers. Most of the gamma rays from space are blocked by the Earth's atmosphere.
What condition must be met for conduction to occur
Answer:
The molecules of the substances must be touching.
Explanation:
Conduction is the process by which heat energy is transmitted through collisions between neighboring atoms or molecules
What are the possible allele combinations the following parent to give to their offspring?
*Note: distribute
YyRr
Answer:
bb or BB
Explanation:
it depends on what the examiner gives you
Suppose a mutation in a jungle plant leads to the growth of much larger leaves.
Would this be a helpful or a harmful mutation? Why?
What type of plant adaptation is a thick, woody stem?
Life cycle difference
Inherited behavior
Physical characteristic
Stages of growth
that would be C phisical characteristic
Answer:
c) Physical characteristic
Explanation:
A thick and woody stem are physical characteristic of a plant adaptation. These are not due to life cycle difference and inherited behaviour. Therefore, the option (c) is the correct answer.
Why is it more difficult to treat a malignant tumor than a benign tumor?
Answer:
Explanation:
Benign tumors also usually don't need treatment. If the tumor is impacting a nearby area or causing other problems, you may need surgery to remove it. Cancerous tumors almost always require treatment with surgical removal, radiation therapy, or chemotherapy.
photosynthesis takes place inside organelles called
Fleas living on a dog are examples of what symbiotic relationship? .A .mutualism .B competition .C parasitism .D predator-prey
Select the correct answer from each drop-down menu. when a cat drops from a tree to the ground, the conversion of takes place. then cat runs up behind a mouse to obtain its food. after eating its prey, the conversion of takes place inside the cat’s body.
The correct answer from each drop-down menu is gravitational force, potential energy to kinetic energy, and then conversion of chemical energy to mechanical energy take place in this order.
What are the forms of energy conservation?During the energy transformation steps, when there is no frictional dissipation, we say that energy is conserved. That is, all potential energy is transformed into kinetic energy, and vice versa. The sum of the kinetic and potential energies of a system is called mechanics.
In this case, When a cat drops from a tree to the ground follows the gravitational force, while the conversion of up behind a mouse to obtain its food is the process of converting potential energy to kinetic energy. And at last, after eating its prey, the conversion inside the cat's body takes place the chemical energy to mechanical energy.
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What is the BEST term to describe the moss's relationship with the canopy trees on which it is found?
Elimination Tool
Select one answer
A.Mutualism
B.Commensalism
С.Parasitism
D.Amensalism
E.Interspecific Competition
Geoffrey records the heat transfer occurring in a sample of matter as being about one half as fast as he originally predicted. He concludes that the atomic structure of this matter must be more rigid and solid, as more rigid atomic structures make the particles move less, thus decreasing the ability for it transfer heat.
Geoffrey's idea is wrong because heat transfer is fastest in solids.
What is heat transfer?Heat transfer is the process by which energy is transferred from one point to another.
During the process of heat transfer, heat energy flows from hot to colder bodies.
The three processes of heat transfer are conduction, convection, and radiation.
Heat transfer is fastest in solids and slowest in gases.
Therefore, based on the nature of heat transfer, Geoffrey's idea is wrong because heat transfer is fastest in solids.
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Which word has a stronger connotation than the word mad? (1 point)
O upset
O alert
Ofurious
O disappointed
Answer:
Furious,
Explanation:
it has to be furious because, if you are disappointed, alert, or upset, then you could be mad but you aren't really more than mad.
This is why I chose furious.