Answer:
at temperatures low enough to turn off the disruptive effects of thermal motions, water freezes into ice in which the hydrogen bonds form a rigid and stable network.
Explanation:
Notice that the hydrogen bond (shown by the dashed green line) is somewhat longer than the covalent O—H bond.
A lock is to a key as a neurotransmitter is to a O battery O receptor site O myelin sheath O motor cell
Answer:
Receptor Site!
How many bacteria will there be after four hours from a single bacterium that divides to produce two cells every 15 minutes
Answer:
65,536 cells
Explanation:
According to the question, a single bacterium will divide into new cells every 15minutes. Since there are four 15 minutes in one hour, which is 60 minutes, a single bacterium will have divided (4×60/15) times =
= 240/15
= 16 times.
Since a single bacterium will divide 16 times in four hours cells, then in four hours, a single bacterium will have divided into 2^16 = 65536 new cells.
Note that, the number of cells a bacterium cell that will divide in two can be expressed as 2^n where n is the number of times
If a bacterium divides into 2 every 15 minutes, there would be 65536 bacteria after four hours.
The bacterium divides into 2 every 15 minutes. Thus, the cell will divide:
60/15 x 4 = 16 times in 4 hours
Thus:
First division = 2 cellsSecond division = 4 cellsThird division = 8 cellsFourth = 16 cellsFifth = 32 cellsSixth = 64Seventh = 128Eighth = 256Ninth = 512Tenth = 1024Eleventh = 2048Twelfth = 4096Thirteenth = 8192Fourteenth = 16384Fifteenth = 32768Sixteenth = 65536More on bacterial division can be found here: https://brainly.com/question/621474
What will happen to an ecosystem that is experiencing a prolonged drought?
If an ecosystem was experiencing a prolonged drought, there would be a big decrease in the population. All living creatures require water, even the ones well adapted to little water. There probably would be as many planets, for the ones surviving would be ones managing to get water, or ones that can survive off little water. Now on the other hand the animals then wouldn't be getting enough food or water, so then again ones who would manage to survive would be ones adapted to little water and food or are excellent hunters.
You can also expect some animals to leave the ecosystem look for a better source of water and food.
hope this helps to some degree
The diversity, as well as the number of individuals among different species, may decrease gradually due to the scarcity of water.
What is an Ecosystem?An ecosystem may be defined as the place or an area where organisms of different species live together and interact with one another for the purpose of food, shelter, and space.
Every living organism on the earth's surface requires water in order to fulfill its requirement for cellular and metabolic activities.
But if the ecosystem experiences a prolonged drought, the physiology of all living organisms is disturbed due to which they leave the ecosystem, hence the number of species gradually lowers.
Therefore, it is well described above.
To learn more about the Ecosystem, refer to the link:
https://brainly.com/question/26551655
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Hydrogen bonds are the weakest type of bond yet they are valable in biology because a large number of
hydrogen bonds together in one molecule actually make the molecule stong.
A.True
B.False
Answer:
true
Explanation:
Which level of organization do all of the living and non living factors x interacting in the pond environment represent. Ecosystem, population, an organism, or a community?
Answer:
Ecosystem
Explanation:
An ecosystem is a level of organization referring to the group of living organisms including plants, animals, microbes interacting with one another, and also with the non-living parts of their environment e.g temperature, water.
Based on this explanation, a level of organization that encompasses all th living and non living factors interacting in the pond environment represent an ECOSYSTEM.
About how big is an atom?
Select one:
a. one tenth of a meter
b. one ten millionith of a millimeter
c. one hundreth of a meter
I Am Pretty Sure The Answer Is "B"
Hope This Help's
Answer:
b
Explanation:
What distinguishes the Kingdom Archaebacteria from Eubacteria ?
Answer:
Can you attach the question as a photo
Drag each resource to its mining type. Answers may be used more than once. (2 points)
aluminum
tin
copper
Choices are
1. underground
2. open pit
3. placer
Answer:
Aluminium - Open Pit (or Open Cut Mining)
Tin - Placer Mining
Copper - Underground Mining
Explanation:
Open Pit Mining: Another name for open pit mining is open-cast or open cut mining. In simple terms, this involves removing topsoil or earth in order to expose and access the minerals beneath them. This type of mining is usually applied when the mineral deposit is close to the earths surface.
A typical feature of open-pit mines is that they leave very wide open pits though the actions of excavators.
Besides Aluminium, other types of minerals which can be mined using this method are: Bitumen, Clay, Coquina etc
Placer Mining
Placer deposits (that is minerals that have been concentrated on a location by weathering are usually accessed by the use of water. This method is mostly connected with the retrieval of minerals within water bodies. Water is used to dig up, and collect heavy minerals from such deposits.
Underground Minning
The entrance into underground mines can be horizontal or vertical.
An underground mine is simply a mine that is beneath the surface of the earth.
Cheers
The extraction of the minerals and the resources from below the earth's surface is mining. Aluminium is extracted by open pit, tin by pacer and copper by underground mining.
What are the types of mining?Open-pit or Open Cut Mining is the method of Aluminum extraction. The method involves the removal of the topsoil to access the minerals found in the earth layers. This can be done to extract the minerals that are not found too deep in the layers.
In open-pit, open and wide pits are dugged to extract the minerals with the help of the excavators. It can also be used for the extraction of Coquina and clay.
Placer mining is the method that is based on mineral deposition and the process of weathering is used for the removal or the extraction of the minerals from the water bodies in which they got deposited.
Underground mining is the technique of mining that is done for the extraction of minerals by the underground vertical or horizontal portals or openings in the earth.
Therefore, Aluminium will be extracted by option 2. open pit, Tin by option 3. placer and copper by option 1. underground mining.
Learn more about underground mining here:
https://brainly.com/question/316758
Sand on a beach is being continually washed farther down the shore. People who live near the beach want to stop this erosion. Which of the following structures or methods designed to deter erosion would best solve the problem?
A. groin
B. seawall
C. breakwater
D. replenishment
Answer:
The Answer is Letter A.
Explanation:
let residents build groins
Question 5
If you removed the lens from an eye and looked through it at an upright tree, how would the tree appear?
upright
upside down
the top of the tree would be pointing to the left
the top of the tree would be pointing to the right
If you removed the lens from an eye and looked through it at an upright tree, the tree appear upside down. Thus, the correct option for this question is B.
What is the function of the lens?The function of the lens in the eyes is to focus light rays onto the retina. Then the retina converts this light into electrical signals which send messages to your brain and creates the image that you observe.
The lens of the eye is the translucent biconvex structure that dangled behind the Iris of the eye. If you eliminate the lens from an eye and looked through it at an upright tree, then the perception of light is not made and cannot stimulate electrical signals by the retina, and the tree will appear upside down or an inverted image is formed.
Therefore, the tree will appear upside down, if you removed the lens from an eye and looked through it at an upright tree. Thus, the correct option for this question is B.
To learn more about the human eye, refer to the link:
https://brainly.com/question/15985226
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In figure 1, which symbol (unshaded square or shaded circle) represents the number of wildebeest, and which represents the percentage of wildebeest with rinderpest? How do you know?
what is the normal relationship between pressure and temperature
Answer:
Gay-Lussac's Law: The Pressure Temperature Law. This law states that the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature. With an increase in temperature, the pressure will go up.
Explanation:
Certain unusual aspects of brain structure were observed in the brain of Albert Einstein. One interpretation is that he was born with certain differences in his cortex from others that encouraged his scientific and intellectual abilities. What do you think of this explanation and what do you think could be an alternative interpretation
Answer:
It seems a plausible inference. An alternative hypothesis is one in which this anatomical difference is present in low population frequency, thereby further scientific observations are needed to confirm (or reject) this hypothesis
Explanation:
Albert Einstein's brain exhibited an unusual anatomical conformation in the prefrontal cortex. Intriguingly, this brain area is involved in abstract thinking, thereby it has been suggested that the amazing cognitive capacities of Einstein may be due to his prefrontal cortex. A way to test this hypothesis is by an observational study with the aim at determining if this feature is exclusive of Einstein's brain.
Which of the following is not true of eukaryotic cells?
( WILL REWARD BRAINLIEST )
A. Eukaryotic cells have a nucleus to hold, protect, and organize the genetic material
B. Eukaryotic cells are considered very primitive and basic
C. Eukaryotic cells can be unicellular and multicellular
D. Eukaryotic cells can reproduce easily
Answer:
C) Eikaryotic cells can be unicellular and multicellular
Answer:
B. Eukaryotic cells are considered very primitive and basic
Explanation:
Prokaryotic cell is considered to he more primitive than eukarya
The blood-brain barrier (BBB) is most permeable to which of the following?
A. Platelets, white blood cells and red blood cells.
B. Sodium, potassium and chloride.
C. Glucose and oxygen.
D. Antibiotics.
Answer:
C. Glucose and oxygen.
Explanation:
The blood-brain barrier is a composition of endothelial cells that regulate the entry of substances into the extracellular fluid found in the central nervous system. Their high degree of selective permeability ensures that no solutes can cross the barrier, and only the right substances which are crucial to the workings of the central nervous system can scale through.
Oxygen which is needed for the proper functioning of the central nervous system and which is hydrophobic in nature is allowed to pass the blood-brain barrier. Glucose too which is an important nutrient/macromolecule for brain health can also move through the blood-brain barrier.
The most accepted theory regarding the make-up of living things is the _____.
Answer:
cell theory
Explanation:
Which foods would have the following nutrient test results? (results shown below)
a. beef, peanut butter, tuna
b. apple juice, honey, orange juice
c. candy, table sugar, cola
d. pasta, bread, crackers
Which statement is false about B-lactam antibiotics?
a) They are inactivated by bacterial B-lactamases
b) They can maintain their activity by co-administering B-lactamase inhibitors
c) They are reversible inhibitors
d) They inhibit a bacterial transpeptidase reaction
Answer: c) They are reversible inhibitors
Explanation: B-lactam antibiotics are not are reversible inhibitors. reversible inhibitors are inhibitors which the allow enzymes they inhibit to start working again, as there is no perman effects on the enzymes ( there is no change to the shape of it active site.). They can sometimes appear as competitive, non-competitive or uncompetitive.
I need help with and i will give you a branlist and it’s science
Answer:
B
Explanation:
Nitrogen has 7 protons
Identify the part of the biosphere that experiences all four seasons and has trees that lose their leaves in the winter and grow new leaves each spring
Answer: I believe it would be the deciduous forest.
Can you help me science
Help due tomorrow!!!
Answer:
approximately 5,730 years
The Jurassic is a period of what era?
Describe the relationship of these terms to each other: Habitat, Environment, EcoSystem and Biome
Answer:
Explanation:
habitat is the living space for organisms, ecosystem is how living and non living organisms work together to create a system that benifits everything for the enviornment, biome is the entire area
Why is a steam burn more severe than a hot water burn?
Answer:
Steam burns are more severe because of the latent heat of vaporization.
Which the these questions is scientific
Which questions are you talking about?
PLEASE HELP AGAIN
What type of light wave interaction is taking place in the image below?
A. Reflection
B.Refraction
C.Diffraction
D.Transparency
Which of the following is not one of the top five greenhouse gases? A. Methane B. Water vapor C. Carbon monoxide D. Ozone
Answer:
carbon monoxide
I did the test and notes and got it right!!!!
Explanation:
What’s the main difference between the two main groups of prokaryotes?
(WILL REWARD BRAINLIEST!)
A. Location of DNA
B. Cell wall structures
C. Plasma membrane
D. Existence of ribosomes
A location of dna
There are several differences between the two, but the biggest distinction between them is that eukaryotic cells have a distinct nucleus containing the cell's genetic material, while prokaryotic cells don't have a nucleus and have free-floating genetic material instead
Answer:
hopefully the diagram attached is helpful!
Explanation:
two main groups are ; bacteria and archaea
- they are single celled organisms that lack a nucleus
- bacteria cells walls contain peptidoglycan and archaea does not
- cell membrane in bacteria is is a lipid bilayer however in archaea it can be a lipid bilayer or a monolayer
Which of the following describes research that would be considered basic
science?
A. Park rangers are trying to find out why a group of elm trees died.
B. Doctors in a hospital are developing a new surgical technique.
C. A professor at a unyersity is observing the mating behavior of
freshwater fish
D. A dairy farmer is designing a new machine for milking cows.
Answer:
C. A professor at a university is observing the mating behavior of
freshwater fish
Explanation: