This is false, because plants have angular momentum, which is found by the formula (mass x velocity x distance). Therefore, mass is an important factor in a planet's momentum.
Which of the following is an old-world of evolution and no longer valid?
Answer:
Where are the answers?
Explanation:
. Your lab technician was to determine the ash content of buttermilk by conventional dry ashing. The technician weighed 5 g of liquid buttermilk into one weighed platinum crucible, immediately put the crucible into the muffle furnace using a pair of all stainless steel tongs, and ashed the sample for 48 h at 800 °C. The crucible was removed from the muffle furnace and set on a rack in the open until it was cool enough to reweigh. (4 marks)
a. What errors were made in the preceding method (there were several)?
b. What were the likely results of these errors?
Answer:
Ashing process is done to evaluate the ash content present in petroleum or other proucts, so that they can be used for certain applications
The two major types of ashing process that includes dry ashing and wet ashing and can be performed using microwave systems or conventional means.
a. errors made in the preceding method while determining the ash content of buttermilk by conventional dry ashing are as following:
Buttermilk should not immediatly put into muffle immediatley, it should be boiled first to avoid splatter.Temperature should be between 500 to 600 degree celcius at high temperature teh ash content can be loss.The sample should be ashed for 12-18 hrs , more than this can damage the required ash content.platinum tip should be used in place of stainless steel because platinum has a lower concomitant tip impedance than stainless stell, so less reactive to ash.The ash should put in dessicator and not allow to kept in open because ash can react with the humidity in teh atmosphere.b. The result that occur due to above errors such as the temperature, time, tongs and leaving ash in open will manipulate the final ash content and its application can be harmful for humans and for other purpose if it will be used.
How does science directly affect you? Where will what you have learned lead you next? PLEASE HELP ME RIGHT NOW!!!!!!!
Answer: Literally everywhere. Having an at least basic level of science helps you in day-to-day situations. For example, cooking. Not only is it crucial to understand the chemical and physical processes when cooking, you should also understand the complexity of how these micro and macromolecule exchange processes affect you and your body. Another prime example is your health, or human processes. You might not realize this, but your body is a plethora of complex, interconnected systems and networks that work hard 24/7 to maintain homeostasis (keep you alive). Understanding how our human physiques conduct themselves helps us gain the knowledge to be able to stay alive.
What is an anaerobic respiration
AThe process sells used to release energy from glucose and oxygen is not available
BPhysical activity that increases heart And breathing rates
C The process cells used to release energy from glucose in the presence of oxygen
D Physical activity that decreases heart and breathing rates
Answer:
A
Explanation:
Anaerobic respiration occurs when there is not enough oxygen to produce aerobic respiration.
A. Describe how C. parvum obtains the glucose it needs for glycolysis after it has infected another cell.
B. Explain the role of lactate dehydrogenase in enabling C. parvum to continue producing ATP by glycolysis.
C. Identify the independent variable used in the experiment.
D. Identify the difference between the control cells and the experimental cells used in the experiment.
E. Justify the use of a control in this experiment.
F. Justify the researchers using a different range of concentrations for FX11 than was used for gossypol.
G. Based on the data in Figure 1, Identify the concentration of gossypol that reduced C. parvum growth to 50% of that in control cells.
H. Researchers discovered a strain of C. parvum that expresses a functional variation of the lactate dehydrogenase gene. A DNA sequence comparison showed that the variant differs from the normal sequence in the region that codes for the enzyme’s allosteric site. Predict the effect of FX11 treatment on C. parvum that express this variant of lactase dehydrogenase.
I. Provide reasoning to support your prediction.
J. Explain how gossypol and FX11 might be used as drugs to treat C. parvum infections in humans without negatively affecting human cells.
Answer:dang
Explanation:
Select all the following that describe isotopes of an element
_ Different numbers of neutrons
_ Different mass numbers
_ Different atomic numbers
_ Different numbers of protons
Answer: different number of neutrons and different mass numbers
Explanation:
The statements that describe isotopes of an element are:
Different numbers of neutrons.Different mass numbers.What is an isotope?An isotope is defined as varieties of atoms that have the same atomic number and therefore constitute the same element even though they have different mass numbers.
Characteristics of an isotope of an elementAtoms that are isotopes of each other have the same number of protons in the nucleus.They are found in the same place within the periodic table.Therefore, we can conclude that the isotopes of an element are atoms with the same atomic number but different mass numbers.
Learn more about the isotopes of an element here: https://brainly.com/question/18586743
Consider the steady ultafiltration of a solute from the capillary across the glomerular endothelial cells into the urinary filtrate in the kidneys. Model the endothelial cells as an infinite membrane of thickness tEC. Assume a well-mixed capillary with concentration CC and a well-mixed filtrate at CF. With a diffusion constant of DEC in the endothelial cell compartment, what is concentration profile across the endothelial cells
Answer:
DEC = CC + CF
Explanation:
It should be understood that, the concentration profile across the endothelial cells will base on the diffusion rate of the filtrate .
Where is new ocean floor formed?
Answer: Mid ocean ridges
Explanation:
Earth.
Answer:
Hey! New ocean floor is formed at mid-ocean ridges.
Explanation:
An example of an animal with RADIAL symmetry would be a ladybug is it true or false
Answer:
False
Explanation:
Ladybugs don't have radial symmetry. :)
Answer:
false is the answer!
Explanation:
If a water well is actively pumped, the water table will *
O be raised around the well
O stay at the same level as before pumping
O be depressed around the well
O be recharged
Imagine a steep, Rocky Stream. Explain the kinds of adaptations animals living in the stream will have.
The aquatic organism such as fishes will adapt themselves to have strong fins so as to swim upstream against the current. * The aquatic plants will adapt themselves to grow on the rocks present in the stream. * They may adapt themselves to have a streamlined body that resist being washed downstream by the current.Answer:
Explanation:
Answer:
The aquatic life such as fishes will adapt themselves to have strong fins so as to swim upstream against the current. * The aquatic plants will adapt themselves to grow on the rocks present in the stream. * They may adapt themselves to have a streamlined body that resist being washed downstream by the current.
Explanation:
Thick fur to stay warm is it physical or behavior adaptation
Answer:
Physical
Explanation:
Answer:
Physical adaptation
Explanation:
Think fur is a change in an animal's non-mental biological makeup. This is physical, whereas a behavioral adaption would be a change in the way an animal acts.
How might the heat from a forest fire help certain gymnosperms reproduce?
Ovules produce more sticky liquid,
Cones open and release seeds,
Trees spread pollen farther.
Seedlings grow faster,
Answer:B) Cones open and release seeds .
Explanation:idk man I got it right so like why not put it here because it might help other people
Answer:
The answer is B
Explanation:
Which of these is most likely to become a carbon film ?
A sea creatures shell
A flowering plant
A tree trunk
Answer:
c- a flowering plant
Explanation:
Which is a possible path of the movements of nitrogen in the nitrogen cycle?
(A) soil - airplants air animals - soil
B) soil animals plants
soil
animals soul plants - air
(D) air - soil plants animals soil - air
Answer:
B) soil animals plants
soil
Explanation:
Nitrogen is taken up by plant roots and combined into organic substances in the plant, such as enzymes, proteins and chlorophyll. ... Plant and animal wastes decompose, adding nitrogen to the soil. Bacteria in the soil convert those forms of nitrogen into forms plants can use. Plants use the nitrogen in the soil to grow.
What explains why populations fluctuate around the carrying capacity?
Answer:
In population ecology: Population fluctuation As stated above, populations rarely grow smoothly up to the carrying capacity and then remain there. Instead, fluctuations in population numbers, abundance, or density from one time step to the next are the norm.
The carrying capacity of an environment is the maximum population size of a biological species that can be sustained in that specific environment, given the food, habitat, water, and other resources available. In population ecology, carrying capacity is defined as the environment's maximal load, which is different from the concept of population equilibrium, which may be far below an environment's carrying capacity. The effect of carrying capacity on population dynamics may be modelled with a logistic function.
The populations fluctuate around its carrying capacity because it is very common even for a stable population to briefly exceed or dip below its carrying capacity.
The size of the population fluctuate due to some environmental factors, presence of predators, competitors etc.
Also reproductive lag time can also cause the population to exceed the carrying capacity temporarily.
What is carrying capacity?The carrying capacity of an environment is the maximum population size of organisms that can be supported by the ecosystem, given the food, mates, shelters and other resources available.
What is reproductive lag time?Reproductive lag time is the time required for birth rate to decline and the death rate to increase in response to resource limits.
To learn more about population study :
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which trait does the fly agaric and the palm have in common
can a rock make new cells
Answer:
Rocks cannot make new cells
Explanation:
You walk outside on a sunny day and have to squint until you put sunglasses on. What is the stimulus that causes the response of squinting? the outside temperature the bright sunlight the surrounding air
Answer:
The correct answer is: the bright sunlight.
Explanation:
The bright sunlight on a sunny day is the stimulus that causes the response of squinting, which is necessary for us to protect our eyes from different conditions that can be caused by extreme sun exposure.
This stimulus is transmitted to the Central Nervous System by sensory neurons, so the information can be processed in the brain and the response to squint our eyes to receive less light can be performed by the orbicularis oculi muscle (the one that closes the eyelids).
Answer:
the bright sunlight
Explanation:
You walk outside on a sunny day and have to squint until you put sunglasses on. What is the stimulus that causes the response of squinting?
o the outside temperature
x the bright sunlight
o the surrounding air
A characteristic that an organism can pass on to its offspring through it’s genes
Answer:
hair color or eye color
Explanation:
dont know how to explain
Answer:
A trait. unless you're looking for specific traits then look at the other person's answer.
Explanation:
A trait is a characteristic passed on the the offspring
Land subsidence is caused by
O groundwater overpumping
O runoff
O gophers
O infiltration
Answer:
groundwater overpumping
Explanation:
Our genetic material, DNA, is formed from a 4 letter "alphabet" of bases: A, T, G, C (adenine, thymine, guanine, and cytosine). The order in which the letters are arranged is important, but because a molecule can move, there is no difference between a sequence and the same sequence reversed. For example, the sequence (A, A, T, A, G, A, T) is the same as the sequence (T, A, G, A, T, A, A). (In reality, DNA molecules have identifiable ends, but ignore that in this problem.) How many distinct DNA sequences of 6 bases are there
Answer:
2048
Explanation:
Since DNA is formed from a 4 letter of bases: A, T, G, C (adenine, thymine, guanine, and cytosine) therefore we have 4^5
Since the base sequence is the same as the reverse,
The number of DNA of sequence of 6 bases=4^6= 4096
Since, the reverse is the same as the forward sequence then the answer is divided by 2 =4096/2 = 2048
Why does the moon have a greater influence on Earth's Tides than the sun does
Answer:
Because ocean tides are the effect of ocean water responding to a gravitational gradient, the moon plays a larger role in creating tides than does the sun. But the sun's gravitational gradient across the earth is significant and it does contribute to tides as well.
Explanation:
when a cell's nucleus divides A. cytokinesis
В.mitosis c. interphase
Answer:
cytokinesis
Explanation:
Answer:
Mitosis
Explanation:
Keratin is a protein in skin cells that forms a
Answer:
Keratin is an important protein in the epidermis. Keratin has two main functions: to adhere cells to each other and to form a protective layer on the outside of the skin. In epithelial cells, keratin proteins inside the cell attach to proteins called desmosomes on the surface.
Explanation:
A student plays football outside on a hot day and lost a significant amount of water in sweat. How will this affect his blood volume?
A.Blood volume decreases
B. Blood volume stays the same
C. Blood volume increases
Answer:
A.Blood volume decreases
Explanation:
Blood volume refers to the fluid substances including blood circulating in the body via blood vessels. The blood volume must be optimal in order to ensure that every organ in the body gets an ample amount of blood. One of the things that can result in alteration of the normal blood volume is DEHYDRATION, which is the loss of water from the body.
Dehydration decreases the blood volume because the water content in the blood becomes decreased as water is lost, which would have detrimental effects on the body because the blood pressure (force at which blood flows) will be reduced.
This is the case of the student in this question that loses a significant amount of water as sweat when he undergoes exercise in a hot weather condition. The loss of water will result in the decrement of his blood volume.
Which of the following is an old-world of evolution and no longer valid?
A.Fossils are merely rocks that have random shapes.
B. The earth is billions of years old.
C. Humans are related to all life on earth.
D.Populations evolve over time through inherited genes.
Answer:
A
Explanation:
-. What are the two steps involved in the creation of proteins? Define
each. Which step is the job of the ribosomes?
Answer:
Explanation:
Protein synthesis is the process in which cells make proteins. It occurs in two stages: transcription and translation. Transcription is the transfer of genetic instructions in DNA to mRNA in the nucleus. In eukaryotic cells, transcription takes place in the nucleus.
I hope this helps! <3
(googles words, not mine)
So far, we have primarily discussed human adaptations independently of one another. In real life, of course, each person has numerous coexisting ancestral adaptations. Ignore what you know of your family history and consider only your physical traits for the following adaptations: skin color, lactose tolerance, and body shape. Based on these three traits, in what part of the world might your ancestors have originated? Do all three of your traits suggest similar ancestry? Be sure to explain your hypothesized determination using evidence related to all three traits, and be sure to think about all the forces of evolution that might impact your unique history (such as gene flow and founder effect).
Answer:
about skin coloration:
Regarding these modifications, we can say that it influences not only the knowledge of evolution but also on the development of strategies for the management of many diseases, so we know that these changes are not produced by a single agent and factors such as Melanin, a substance produced by melanocytes and which gives the tint to each tone, also includes influences such as exposure to sunlight, both in frequency and geographical area from which it is made. Keratin is also found as its own dermal factor. According to this, there has been an adaptation of the phenotype of each individual mainly to the UV environmental factor that can make changes and modify skin tone.
About lactose tolerance:
It is known that historically, after childhood for many people it was very difficult to continue consuming milk, because the enzyme lactase was not found in them and lactose digestion became very difficult, nowadays it is believed that the weather has influenced to improve digestion
About the body shape:
The inherited factors are very important, from the different habitats of our ancestors, which for reasons of hunting, solar exposure, type of food, were being inherited, today it is known that there are 3 main forms of body types including the endomorph, ectomorph and mesomorph, the main advantages depending on where the individual lives will adapt to persist in the next generation, as well as to use new ways of obtaining food can modify it
Do humans have DNA or RNA in the nucleus of your cells?
Answer:
Explanation:
RNA molecules are produced in the nucleus of human cells from DNA by a process called transcription, but they are found in the cytoplasm too. DNA is present only in the nucleus of the cell.
