Answer:
Mesosphere
Explanation:
The Mesosphere is a layer of the atmosphere that is above the Stratosphere and below the Thermosphere. This is the third layer of the atmosphere. Some of its characteristics include;
1. It is constantly being hit by photons: These photons are in the form of meteors that constantly hit this layer of the atmosphere. Meteors which are particles of dust release light energy that makes them visible to the human eyes as shooting stars.
2. The layer is characterized by very low pressure. This makes the air here thin and as the altitude increases, the air becomes very cold.
3. Temperatures decrease from 120° Celsius to -80° Celsius as you move down through the layer: The temperature in this layer decreases as the altitude increases.
In cats, the Dense pigment gene, D/d, codes for melanophilin, a protein involved in the transportation and deposition of pigment into a growing hair. A separate gene, M/m, is responsible for the production of the pigment, with M_ producing black pigment and mm producing brown. When a cat has two recessive d alleles, its fur is a light gray color regardless of which alleles of M/m are present.
Required:
State the phenotype and frequency for each of the following outcomes of a dihybrid cross:
a. M_D_
b. M__dd
c. mmD
d. mmdd
Answer:
a. M_D_ : 9/16 Black furred individuals
b. M__dd : 3/16 gray furred individuals (1/16 MMdd + 2/16 Mmdd)
c. mmD_ : 3/16 Brow-furred individuals (1/16 mmDD + 2/16 mmDd)
d. mmdd: 1/16 gray furred individuals.
Explanation:
Available data:
Dense pigment gene, D, codes for melanophilin.D allele dominant over d. Gene M/m is responsible for the production of the pigmentM is dominant over mIf D is present, M/m is expressedIf dd is present, M/m is not expressed DDMM, DdMM, DDMm, DdMm --->Black furDDmm, Ddmm ---> Brown furddMM, ddMm -----> Light gray furCross: between two dihybrids
Parental) DdMm x DdMm
Phenotype) Black-furred Black-furred
Gametes) DM, Dm, dM, dm DM, Dm, dM, dm
Punnet Square) DM Dm dM dm
DM DDMM DDMm DdMM DdMm
Dm DDMm DDmm DdMm Ddmm
dM DdMM DdMm ddMM ddMm
dm DdMm Ddmm ddMm ddmm
F1) 9/16 Black-furred individuals, D-M- (1/16 DDMM + 2/16 DDMm + 2/16
DdMM + 4/16 DdMm)
3/16 Brown-furred individuals, D-mm ( 1/16 DDmm + 2/16 Ddmm)
4/16 Gray-furred individuals, dd-- ( 1/16ddMM + 1/16 ddmm + 2/16 ddMm)
What can increase our confidence in a scientific claim or theory
What is the effect of an enzyme on the energy of a chemical reaction
Answer:
it increases speed of chemical reaction
Compare the distribution of mitochondria in the four organs, or organ parts, shown in the graph.
Answer:
More mitochondria present in the heart as compared to other organs.
Explanation:
The distribution of mitochondria is not the same throughout the body. The organ which perform more hard work in the body have more number of mitochondria in the cell because the organ needs more energy for performing its function. Heart is the organ in the body that performs more hard work so there are 5000 mitochondria present in each cell of the heart.
The organ that contains the highest amount of mitochondria is the heart.
Cells are the simplest units of the living organism which are organised in various amounts to form tissue.
These cells contain organelles that brings about the normal functioning of the cell.
An example of the organelle is mitochondria.
The mitochondria is the power house of the cell which is located in organs that requires a lot of energy.
Example of such organs are:
Heart,
Kidneys
Muscles
Brain.
The heart is known to have the highest mitochondria with about 5,000 mitochondria per cell.
Therefore to compare with the other organs, the heart contains the highest amount of mitochondria.
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Question 6 of 10
Pure liquid water has a pH of
O A. 8
O B. 9
O C. 7
O D. 6
How do limiting factors most affect population size?
3
stop population growth
O restrict population growth
O increase population growth
O decrease population growth
Answer:
restrict population growth
Answer:
b.
Explanation:
blank are very small aquatic organisms, such as un regular algae or the larvae of some crustaceans
Answer:
Zooplankton
Explanation:
45. Where in the
cell would rRNA be found?
A Nucleus
B. Ribosomes
C. Golgi Apparatus
D. Cholorplast
46. What is the role of messenger RNA?
A. To bring the DNA message to the mitochondrion
B. To bring the tRNA
message to the nucleus
C. To bring the DNA message to the ribosome
D To take anino acids to the ribosome
47. An mRNA codon has the following sequence: ACU
What is the corresponding tRNA sequence called, and what would the sequence be?
A. Anticodon, UAG
B. Codon, TGA
C. TCode; TGU
D. Anticodon; UGA
Answer:
45. B. Ribosomes
46. C. To bring the DNA message to the ribosome
47. D. Anticodon; UGA
Explanation:
45. rRNA stands for ribosomal RNA. It is an important component of all ribosomes. It is non-coding RNA meaning it does not produce a protein. It is a ribozyme (an RNA with enzymatic activity) which carries out protein synthesis in ribosomes.
46. mRNA stands for messenger RNA. It is transcribed from DNA. After transcription, it goes to the ribosome where it is translated into protein.
47. tRNAs posses anticodons that are complementary to RNA codons. In RNAs, A pairs with U, and G pairs with C.
The primary function of ___ is to store food. Its cells
contain many amyloplasts that are filled with starch.
Answer:
Root tubers
Explanation:
Firstly, amyloplasts are a type of plastids whose function is to produce and store starch granules. Amyloplasts are found to be numerous in the cells of storage tissues in certain plants. The ROOT TUBERS of some plants like potato stores carbohydrate in form of starch in the amyloplast organelles present in their cells.
According to this question, the ROOT, which contains numerous starch-storing organelles called AMYLOPLAST, primarily functions to store food for the plant.
A hungry yeast cell lands in a vat of grape juice and begins to feast on the sugars there, producing carbon dioxide and ethanol in the process:
C6H12O6 + 2ADP + 2Pi + H+ → 2CO2 + 2CH3CH2OH + 2ATP + 2H2O
Unfortunately, the grape juice is contaminated with proteases that attack some of the transport proteins in the yeast cell membrane, and the yeast cell dies. Which of the following is the most likely cause of the yeast cell’s demise?
a. toxic buildup of carbon dioxide inside the cell
b. toxic buildup of ethanol inside the cell
c. diffusion of ATP out of the cell
d. inability to import sugar into the cell
e. inability to take water into the cell
Answer:
The correct answer will be
D.) inability to import sugar into the cell.
Explanation:
The grape juice is contaminated with proteases that attack some of the transport proteins in the yeast cell membrane, and the yeast cell dies. inability to import sugar into the cell
what are the function of protease ?Proteases are the enzymes found in all living organism like bacteria, algae, plants and animals and in some of the viruses.
They are mainly involved in the catabolism and digestion of proteins and cell signalling, involve in hydrolysis of peptide bonds and convert them to amino acids, which is then absorbed and utilised by cells.
They involve in blood coagulation process, cell division, growth, apoptosis and migration, recycling and transport across membranes.,
They participate the in activation of precursor proteins and zymogens.
Proteases provide immune support and regulate the process of tumour growth, metastasis, inflammation, etc.
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Viores
fat
&
Minerals
e leed blood cells
The
SKELETAL
SYSTEM
1
*consists OF JOINTS.
BONCS, & CARTILAGE
*Provides structure, SuppORT
and PROTECTION
PROTECT
Organs
bones Join
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ligamen
like
Calcium
3
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alleviates
friction
2
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16 points
5.
Match the word/phrase with the correct place on the chart.
One over
3
4
1
2
Allow Movement
A Cushion For Your Bones
Bones
Cartilage
Which list shows the correct order of these events in the
formation of sink holes?
Falak lists the four events involved in the formation of
sinkholes.
W-Acidic rainwater dissolves the limestone bedrock.
X-Large cavities form in the bedrock.
Y - Natural holes and cracks become bigger.
Z - The ceiling collapses due to the weight of sediment.
O W, X, Y, Z
OW, Y, X, Z
OW, Z, Y, X
OW, Z, X, Y
Answer:
W, Y, X, Z
Explanation:
Answer:
W, Y, X, Z
Explanation:
Edge 2020
Using the Scientific Method to Identify a Pathogen
The tests for these uncommon pathogens are similar to the ones that have already been performed for the common viruses, but in this case, you will try to identify the DNA or proteins of specific viruses that are not often seen in clinics or hospitals in that area of the country. Each region of the country has certain viral pathogens that are spread throughout the human population that live in that area. When one of these viruses spreads to a new area, we consider it to be "emerging" in this new population of people. Some detective work and deductions will be required. By applying the scientific method, you can focus and refine your list of possible viral pathogens to experimentally test for. You’ll begin your investigation by reviewing the patient’s history and symptoms and formulating a hypothesis for possible causative agents. Based on what you know of the scientific method, what would you like to do next?
Choose what
Answer:
The correct answer would be - design and run some tests or experiments.
Explanation:
The scientific method is an orderly or step by step process that helps in developing the knowledge about a particular scientific process. This process involves having a purpose, observe the characteristics, making a hypothesis with a possible explanation, designing a test or experiment for the hypothesis, analyzing the result or data, and making a conclusion.
In this experiment, the purpose, and observation of the already formulated so the next step would be designing a test and run the test to find the result or data for further investigation.
What is measured of the average kinetic energy of all the particles of an object
Answer:
Temperature
Explanation:
Temperature is created by how fast particles move, so if they move faster, the environment would be warmer, etc.
Temperature is the kinetic energy of the particles in all technicalities.
What is the function of the nucleus?
The function of the nucleus is to store the DNA of the cells of eurakyotic cells.
This is the puropse of a nucleus.
Hope it helps you!
discribe the flow of energy from the sun to the producer and then to a consumer. I need help plz trying to get grades up
7. Which of the following is NOT an observation?
A. The grass is brown.
B. It has not rained in ten days.
O.It will rain tomorrow.
D. It is raining.
Answer:
O. It will rain tomorrow
Explanation:
You don't know if it's actually going to rain tomorrow. You just infered that it was going to rain tomorrow because of some other reason.
Which domain would contain organisms that have membrane bound organelles?
O Archaea
O Bacteria
O Eukarya
O Protista
Answer:
Eukarya
Explanation:
Eukarya is the only domain with a membrane bound organelles.
Domain Eukarya contain organisms having membrane bound cell organelles. The correct option is C.
What is Eukarya?Domain Eukarya, is made up of organisms with nuclei as well as membrane-bound cell organelles in their cells.
It is also the only domain with multicellular and visible organisms such as humans, animals, plants, and trees. Bacteria and arachaea are unicellular organisms with no nucleus.
Thus, the correct option is C.
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A star has a mass that is 3.5 times that of the Sun. Assuming that it's on the main
sequence, how many solar luminosities is it?
What is caused by the action of hot material rising and cool material sinking?
Answer: Heat transfer
Explanation:
Hot material such as hot air or liquid is more dense that cool material so it will rise. As it does so the cool material will sink towards the source of heat that is making the hotter materials hot and get heated as well which will enable it to rise and the whole cycle repeats.
This type of heat transfer is called Convection and it is very important to processes occurring on earth from basic things such as how water is heated in a kettle to how rainclouds are formed in the atmosphere.
Summarize the steps that occur in the process of chromosomal DNA replication. Please place the following steps in the proper order.
A. DnaA proteins bind to the origin of replication, resulting in the separation of the AT-rich region.
B. DNA helicase breaks the hydrogen bonds between the DNA strands, topoisomerases alleviate positive supercoiling, and single-strand binding proteins hold the parental strands apart.
C. Topoisomerases unravel the intertwined chromosomes, if necessary.
D. Primase synthesizes one RNA primer in the leading strand and many RNA primers in the lagging strand, and DNA polymerase III synthesizes the daughter strands of DNA.
E. DNA polymerase I removes the RNA primers and fills in that region with DNA, and DNA ligase covalently links Okazaki fragments together.
F. Replication continues until the two replication forks meet on the other side of the circular bacterial chromosome.
Answer:
The proper order is:
A. DnaA proteins bind to the origin of replication, resulting in the separation of the AT-rich region.
B. DNA helicase breaks the hydrogen bonds between the DNA strands, topoisomerases alleviate positive supercoiling, and single-strand binding proteins hold the parental strands apart.
C. Topoisomerases unravel the intertwined chromosomes, if necessary.
D. Primase synthesizes one RNA primer in the leading strand and many RNA primers in the lagging strand, and DNA polymerase III synthesizes the daughter strands of DNA.
E. DNA polymerase I removes the RNA primers and fills in that region with DNA, and DNA ligase covalently links Okazaki fragments together.
F. Replication continues until the two replication forks meet on the other side of the circular bacterial chromosome.
Explanation:
The process of DNA replication in prokaryotes starts at a point called ORIGIN OF REPLICATION. This site is where certain proteins recognize and bind to in order to kickstart the replication process. The following are orderly processes of DNA replication.
- DnaA proteins bind to the origin of replication, resulting in the separation of the AT-rich region.
- DNA helicase breaks the hydrogen bonds between the DNA strands to form two replication forks, topoisomerases prevent supercoiling of these separated DNA, and single-strand binding proteins hold the parental single strands apart, hence, making sure that they do not rewind again.
- In case DNA rewinds, topoisomerases unravel or disentangles the intertwined chromosomes, if necessary.
- DNA Primase synthesizes one RNA primer in the leading strand and many RNA primers in the lagging strand,which allows DNA polymerase III synthesize the daughter strands of DNA. Note that the synthesis of nucleotides on threading strand is continuous while nucleotides are synthesized in small fragments called OKAZAKI FRAGMENTS, on the lagging strand.
- DNA polymerase I removes the RNA primers and replaces with synthesized DNA in that region, and DNA ligase covalently links the Okazaki fragments (small fragments of DNA) together.
- Replication continues until the two replication forks meet on the other side of the circular bacterial chromosome.
Your spinal cord is part of your central nervous system.
True or false?
Answer:
The answer is True the spinal cord is part of your Central Nervous system, or CNS.
Which organism is the least related to the other three organisms?
A. 1
B. 2
C. 3
D. 4
Answer:organism 2
Explanation:
The organism which is least related to the other three organisms is second. This is because the more the similarity of amino acid sequence, the more is the organism related.
What do you mean by Organism?An Organism may be defined as a living thing made up of one or more cells and able to carry on the activities of life.
In the given figure, the amino acid sequence SER is present in all the organisms, LEU is not present in organism 2 and ASN is the only amino acid sequence that is present only in organism 2.
Therefore, the organism which is least related to the other three organisms is second.
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You have a cup of beans in front of you with 20 white beans and 20 red beans. These beans represent the alleles for a simple Mendelian trait, where red is dominant (R) and white is recessive (r). The cup holds the alleles for an entire population (the gene pool). Note: You may substitute other everyday objects (such as candies, coins, or paper clips) for the beans, but be sure to designate which objects represent the dominant versus recessive alleles.
How many alleles of each type are present in your overall population?
Answer:
Dominant: 20, Recessive: 20
Explanation:
The case shown in the question above explores simple Mendelian traits, since it shows a population where individuals of the same species present the dominant allele (R- red) and the recessive allele (r- white). We can project, then, that this population has an allele balance, where it is possible to find 20 red beans, which have the dominant allele and 20 white beans, which present the recessive allele.
How does all 4 of earths spheres interact in a event
Answer:
These spheres are closely connected. For example, many birds (biosphere) fly through the air (atmosphere), while water (hydrosphere) often flows through the soil (lithosphere). ... Events can occur naturally, such as an earthquake or a hurricane, or they can be caused by humans, such as an oil spill or air pollution.
Explanation:
The colorless root like projections of mosses, liverworts, and hornworts, which anchor them to the substrate are called
Answer:
Rhizoids
Explanation:
Mosses, liverworts, and hornworts are three groups of a division of plants called BRYOPHYTA. These division of plants are referred to as "lower plants" because of their primitive features. They are non-vascular i.e they do not possess vascular conducting tissues e.g xylem, phloem etc.
In addition to this, bryophytes (mosses, liverworts, and hornworts) do not have true roots and leaves like other plants. Instead, they possess colorless root like projections called RHIZOIDS, which they use to anchor themselves to the substrate and absorb water.
Explain what you think would happen to an egg placed in salt water? Describe why this would occur.
Answer:
An egg placed in salt water will float!
Explanation:
In normal tap water, an egg will sink because it's density is greater than the density of water. But, when salt is added to the water, it's density becomes greater than the egg's density. The term used to describe this is "buoyancy."
Spermatozoa and ovum are specialized cells that contain half the number of chromosomes from both parents. The spermatozoa and ovum combine chromosomes to create a fertilized egg with a full set of chromosomes.
Which process creates spermatozoa and ovum?
cell differentiation
cell growth
meiosis
mitosis
Answer:
c
Explanation:
What way does air move ?Air ranges in which two pressures ?
A)Vertically ;L to H
B)Horizontally;H to L
C)Vertically;H to L
D)Horizontally;L to H
B.) horizontally; H to L
I just did the text and the obvious answer is B
Which landform is created by flowing water?
.Cirques
.Gullies
.Horns
.Dunes
Answer:
B. Gullies
Explanation: