Answer:
Antibiotics are simply chemicals that kill prokaryotic cells but do not harm eukaryotic cells. They are natural chemicals produced by fungi and bacteria that act to control their bacterial competitors. For example, streptomycin stops protein synthesis in prokaryotic cells by binding to their unusual ribosomes.
Explanation:
Sorry if this makes no sense. Basically, the antibiotics will harm/kill cells like the prokaryotic cell, but it won't harm or kill any human cells that are essential. They'll kill bacteria, though. The chemicals in the antibiotics aren't compatible with the ones in the prokaryotic cell, so it'll kill it.
Pls help me with this question
B. Explain the steps used to separate chalk powder, rice grains and stones
Answer:
chalk powder can be seaprated by dissolving with water
rice grains remain
stones by hand
Answer:
chalk with the machine and rest all with hands
Explanation:
Two students are given cubic boxes, measuring 10 cm on a side. Robert puts a single glass marble with a
diameter of 10 cm in the box. Susan puts 1,000 1-cm glass marbles in her box.
1. Whose box has more empty space? Explain.
Answer:
Both boxes have the same amount of empty space
Explanation:
Given
Cube Box
[tex]Length = 10cm[/tex]
Robert:
1 glass marble
[tex]Diameter = 10cm[/tex]
Susan:
1000 glass marble
[tex]Diameter = 1cm[/tex]
Required
Whose box has more empty space?
First, we need to calculate the volume of the cubic box.
[tex]Volume = Length^3[/tex]
Substitute 10cm for Length
[tex]Volume = 10^3[/tex]
[tex]Volume = 1000cm^3[/tex]
Next, calculate the volume of Robert's glass
Volume is calculated as:
[tex]Volume = \frac{4}{3}\pi r^3[/tex] ---- Volume of a sphere
Where
r = radius
[tex]r = \frac{1}{2} * Diameter[/tex]
[tex]Diameter = 10cm[/tex] --- Given
Substitute 10 for diameter
[tex]r = \frac{1}{2} * 10cm[/tex]
[tex]r = 5cm[/tex]
So:
[tex]Volume = \frac{4}{3}\pi r^3[/tex]
[tex]Volume = \frac{4}{3} * \frac{22}{7} * 5^3[/tex]
[tex]Volume = \frac{4}{3} * \frac{22}{7} * 125[/tex]
[tex]Volume = 523.8cm^3[/tex]
Next, we determine the volume of Susan's 1000 glasses
Volume is calculated as:
[tex]Volume = \frac{4}{3}\pi r^3[/tex] ---- Volume of a sphere
Where
r = radius
[tex]r = \frac{1}{2} * Diameter[/tex]
[tex]Diameter = 1cm[/tex] --- Given
Substitute 1cm for diameter
[tex]r = \frac{1}{2} * 1cm[/tex]
[tex]r = 0.5cm[/tex]
Substitute 0.5cm for radius in [tex]Volume = \frac{4}{3}\pi r^3[/tex]
[tex]Volume = \frac{4}{3} * \frac{22}{7} * 0.5^3[/tex]
[tex]Volume = \frac{4}{3} * \frac{22}{7} * 0.125[/tex]
[tex]Volume = 0.5238[/tex]
But there are 1000 glasses.
So, the volume of 1000 glasses is:
[tex]Volume = 0.5238 * 1000[/tex]
[tex]Volume = 523.8cm^3[/tex]
--------------------------------------------------------------------------------------------------------------
For Robert:
[tex]Volume = 523.8cm^3[/tex]
For Susan:
[tex]Volume = 523.8cm^3[/tex]
Since, they have the same volume.
Both boxes have the same amount of empty space
From the dimensions of glass marble for robert and susan, we can say that; none of the given boxes have more empty space.
We are told that the cubic boxes have a measure of 10 cm for its' sides.
Formula for volume of a cube is;
V = lwh
where;
l is length
w is width
h is height
Thus; V = 10 × 10 × 10
V = 1000 cm³
For Robert;
We are told that he puts a glass marble with a diameter of 10 cm in the box. The glass is usually spherical in shape and the volume of a sphere is;
V = ⁴/₃πr³
Thus;
V_rob = ⁴/₃π × (10/2)³
V_rob = 523.6 cm³
Volume left for rob = 1000 - 523.6
Volume of empty space left for rob = 476.4 cm³
For Susan;
V = ⁴/₃πr³
Thus;
V_sus = ⁴/₃π × (1/2)³ × 1000
V_sus = 523.6 cm³
Volume left for susan = 1000 - 523.6
Volume of empty space left for susan = 476.4 cm³
Read more at; https://brainly.com/question/3948796
what causes a seismic waves
Answer:
Seismic waves are the waves of energy caused by the sudden breaking of rock within the earth or an explosion. They are the energy that travels through the earth and is recorded on seismographs. Earthquakes radiate seismic energy as both body and surface waves.
Explanation:
Answer:
caused by the sudden breaking of rock within the earth of an explosion.
Explanation:
dont judge me if im wrong
Early civilizations made pottery as functional and decoritave objects.they used geometric and free flowing designs.what design was especially important in ancient pottery? A) circle B) square C) spiral D triangle if this gets annoying sorry dudes and dudettes
Answer:
most potteries were Circular, Such as in Egypt they had slavery, but it wasn't like European slavery. They would grow their farms to provide for their families. one main way was to carry water back for their crops in circular plates and vases.
You could say Egyptian slavery wasn't slavery. it was mainly just everyone fending on their source of crops. And everyone could sell their crops for more produce.
Explanation:
Answer choice: Circle
Write 3 things you know about the Carbon Cycle.
Pls help ASAP!
Answer:
Carbon moves from living things to the atmosphere.
Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms.
Carbon moves from fossil fuels to the atmosphere when fuels are burned. ...
Explanation:
how can drip irrigation be useful in farming
Answer: It helps control the water better and more efficiently. It also helps to save water
Explanation:
When a warmer stream flows into a cooler lake, what happens? please answer will mark brainelist
Answer:
it steams cuz of the hot mixing with the cold
How are the causes of ocean acidification and climate change related to one another
Answer:
The rising concentration of carbon dioxide in the atmosphere is driving up ocean surface temperatures and causing ocean acidification. The rate at which water absorbs CO2 decreases as water temperature increases.
Explanation:
Found it on google lol
________ are individual organisms with a gastrovascular cavity and circle of tentacles that make up coral.
A) Polyps
B) Algae
C) Nematocytes
D) Planulae
E) Atolls
Name 2 physical processes that are endothermic but not a chemical reaction?
I need this rn pls
Pleas give me an answer if you actually really know the answer because everybody is giving different answers, pls
Answer:
plants
Explanation:
plants are green
Answer:
Some kind of organisms that chloroplasts are found in are green plants and algae, also photosynthetic tissues that are not green, such as red leaves, etc.
Explanation:
Hope it helps!
Plants have an added layer that animal cells do not. What is that added layer called?
Answer:
a cell wall
Explanation:
Considering the connections between Yellowstone’s wolves, aspen and willow trees, and elk; which one is the keystone species.
Answer:
The keystone species is the wolf.
Explanation:
Every species of organism is important to the ecosystem, so if just one species gets extinct for whatever reason there will be consequences for the other species. How big the consequences will be, depends on the species and on how big of an effect it has on the ecosystem. Some species have relatively small importance, while some have huge importance, and the ones that have huge importance are called keystone species.
The keystone species have such big importance to an ecosystem that with their presence everything is under control, but if they go extinct then the ecosystem suffers badly and changes dramatically. In this case, a keystone species is the wolf. The wolves control the elk population, which in turn means that there is no shortage of food for the elk and they don't damage the young trees. By not damaging the young trees, they grow, so there is a much larger area covered by forest. More forest means less erosion, the water of the streams is better controlled, and there is less meandering. If the wolves are out of the picture, as they were for some time, the picture is totally opposite.
Reasoning: Write a three sentence statement that connects your evidence to your claim
about living organisms.
Answer:
Living organisms such as birds, animals, plants and microorganisms form the biotic component while land, air and water form the abiotic components. Biotic and abiotic components interact with each other resulting in transfer and replenishment of energy and nutrients.
Explanation:
1. What roles do hormones play in plant development?
2. Should commercial fruit farmers be allowed to use ethylene to accelerate the ripening of fruit for the market? Why or why not?
3. Do you believe that ethylene gas is essential to plant’s ability to produce fruit, seeds, and reproduce? Why or why not?
Answer:
Plant hormones playa crucial role in controlling the way in which plants grow and develop. While metabolism provides the power and building blocks for plant life it is the hormones that regulate the speed of growth of the individual parts and integrate these parts to produce the form that we recognize as a plant
What are weather balloons?
Locations with instruments that measure weather conditions in specific land areas
Numerical equations based on weather-related factors that forecast weather
Objects that carry instruments into the stratosphere to measure atmospheric conditions
Structures that orbit Earth in the exosphere to capture images and collect data
Answer:
What are weather balloons?
Objects that carry instruments into the stratosphere to measure atmospheric condition.
Answer:
c i think i hope u get a good test score
Explanation:
Outline THREE adaptations of terrestrial plants for their survival in their habitat.
Answer:
Stomata for gas exchange, water resistant waxy cuticles on leaves and specialized cells for support.
Explanation:
Plants have undergone several modifications for life on land. These include the development of several mechanisms:
a waxy, thick water-repellent cuticle- the thick cuticle provides a barrier to water loss from plant tissues in the leaf. stomata- these moderate the evaporation of water, an important commodity to land dwelling terrestrial organisms. They also regulate gas change cells to provide strength and rigidity- plant cells are specialized cells that contain lignin and cellulose, these are rigid provide good support against gravitational forces, Without them the stem would break and the cells would readily lose waterWhat is an advantage of asexual
reproduction?
A. Creates genetic diversity.
B. Occurs quickly.
C. Produces a small number of offspring, D. Produces identical offspring.
Answer that is correct and with explanation gets brainliest!
Answer:
B
Explanation:
he population can increase rapidly when the conditions are favourable. only one parent is needed. it is more time and energy efficient as you don't need a mate. it is faster than sexual reproduction.
Cell division is completed when which step is finished? (SE 5A) Select one: a. interphase b. telophase c. mitosis d. cytokinesis
Answer: Cytokinesis
Explanation: I am taking this same test right now and got it correct.
Cell division is completed when cytokinesis, which is the final step of mitosis, referring to cytoplasmic division, is completed. So the correct option is D.
What is mitosis?A kind of cell division known as mitosis occurs when a single cell (the mother) splits into two genetically identical daughter cells. Mitosis, when referring to the cell cycle, is the stage of cell division during which the DNA in the cell's nucleus is divided into two identical sets of chromosomes.
Mitosis is used in the vast majority of cell divisions that take place in your body. Mitosis fills an organism's body with cells during development and growth, and it substitutes old, tattered new cells over the course of an organism's existence. Mitotic divisions are a kind of reproduction for single-celled eukaryotes like yeast, resulting in the generation of new members of the population.
In each of these scenarios, ensuring that each daughter cell receives a flawless, complete set of chromosomes is the "objective" of mitosis. In general, cells with too few or too many chromosomes don't function effectively; they may die off or potentially spread cancer. Thus, during mitosis, cells don't just randomly split their DNA into two heaps for the two daughter cells. Instead, they divided up their duplicate chromosomes in a methodical order.
Therefore the correct option is D.
Read more about mitosis, here
https://brainly.com/question/26678449
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What significance does the temperate zone have on commercial fishing?
a. the zone's clear water makes it easier to catch fish
b. mostly consists of large fish that are more commercially viable
c. greater abundance of commercial species
d. very few mammalian species that compete for the fish
Answer:
I believe C. greater abundance of commercial species is your answer. hope this helps and have a nice day!
Answer:
It is C!
Explanation:
PLATO
Approximately 50 million acres of tropical rainforest are cleared each year. Which effect most likely would result from the clearing of these forests?
a. A decrease in soil erosion
b. An improvement in water quality
c. A decrease in biodiversity
d. An improvement in air quality
Answer:
A.
Explanation:
The effect most likely would result from the clearing of these forest is A decrease in soil erosion.
What is reforestation and why is it important?
Reforestation is of great importance in combating climate change. In the increase of water resources, in the reduction of damages in agriculture related to floods, in the increase of the sustainable stock of legal wood, in the sequestration of CO2 and reduction of the greenhouse effect.
Reforestation consists of repopulating deforested areas to recover forests that were destroyed in the recent past.
See more about reflorestation at brainly.com/question/16214155
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How are graphemes related to synesthesia?
Grapheme-color synesthesia is a consistent brain-related phenomenon. A syneshete automatically associates distinct, consistent colors with certain letters, numbers, and/or words. A word that is printed in black on a page or wall in front of you will carry its own specific color when you see it.
Answer:
Grapheme–color synesthesia or colored grapheme synesthesia is a form of synesthesia in which an individual's perception of numerals and letters is associated with the experience of colors. Like all forms of synesthesia, grapheme–color synesthesia is involuntary, consistent and memorable.
Explanation:
it is right
What is DNA replication? Highlight your answer.
A. Conservative
B. Non-conservative
C. Semi-conservative
D. None of the above
Answer:
C
Explanation:
A researcher is studying a cornfield that has been recently abandoned by a farmer. By the end of one
year, wild grasses begin to grow in the field.
Identify whether this is an example of primary succession or secondary succession.
Answer:
ummm
Explanation:
What element is a component of almost all biological molecules (life)? What is the study of this branch of chemistry called?
Answer:
Caborn is essential to on Earth
when placed in a glucose solution, yeast cells will produce bubbles. which process are the yeast cells carrying out? A. chemosynthesis B. respiration C. photosynthesis D. transpiration
Answer:
B. respiration
Explanation:
There's a Quizlet called "Biology 1st 9 weeks review" (it's created by Rodgerst4) that helped me!The bubbles produced when yeast cells are placed in a glucose solution is because the yeast cells are carrying out respiration. The correction option would be B.
Yeast cells are able to carry out a type of respiration known as anaerobic respiration when placed in a suitable substrate medium like glucose. During this process energy in the form of ATP is generated in the absence of oxygen for the metabolism of the yeast cells. The equation of the reaction is as follows:
[tex]C_6H_1_2O_6 --->2 C_2H_5OH + 2 CO_2[/tex]
Thus, the carbon dioxide gas is released as bubbles in the solution as a result of respiration.
More on anaerobic respiration can be found here: https://brainly.com/question/12605249
find the kinetic energy of a ball of mass 200 grams moving at a speed of 20m/s
Answer is 40J...............
Which of the following is true about a light-year?
A)It is a measure of time.
B) It takes one light-year for light from the Sun to reach Earth.
C) it takes one light-year for Earth to orbit the Sun.
D) It is a measure of distance.
plz answer ^w^
thx
Answer:
D) It is a measure of distance.
Explanation:
I belive is the answer
Answer:
E - which is the year is light
how many chromosomes do whales have
Answer:
i have been researching and i found they have 42 chromosomes. Blue whales have 44 and sperm whales have 46 i was getting different numbers for different whales
Explanation:
Hope i helped!
It is best to say that the protection to properties offered by sea walls along coasts _______.
a.
decreases the present and future risk to human properties
b.
increases both the present and future risk to human properties
c.
decreases the present but increases the future risk
d.
increases the present but decreases the future risk
Please select the best answer from the choices provided
A
B
C
D
Answer: a. decreases the present and future risk to human properties
Explanation:
Properties along the coasts can be in danger when high tides come in. This can however be mitigated by walls protecting those properties as it would take a significantly high tide (flood proportion) to scale those walls and come in and damage the property.
These walls therefore not only decrease the present risk to human properties but if maintained, decrease the future risks as well.
Answer:
A.
Explanation:
decreases the present and future risk to human properties