Answer:
C
Explanation:
cellular organization is the components that make up the cell and how they are arranged inside it. Each component, called an organelle, performs a specific function that is vital for the cell.
The Bacteria, Archaea, and Eukarya are the three domains of the classification. The cellular basis of the classification of the three domains. Thus, option C is correct.
What is the cellular organization?The cellular organization is the arrangement of the cells that are the smallest unit of the organism. The cells of the body make groups at the hierarchical level and perform a specific function.
The domains are not classified based on the cell wall as the animal and plant cells are grouped in the eukarya together. They are also not organized based on the number of cells as bacteria and Archaea both are single-celled.
The domains are not classified based on the nutritional requirements as the modes of nutrition varies in the eukarya domain itself and not just the two other domains.
Therefore, option C. cellular organization is the basis of domain classification
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Sleet forms from which type of precipitation?
snowflakes
ice crystals
rain droplets
Snow
I NEED TO KNOW ASAP
Answer:
rain droplets
Explanation:
Answer:
rain droplets
Explanation:
An unfertilized egg cell has six chromosomes. After fertilization, how many chromosomes should the zygote have?
Answer:
12 chromosomes, because the basic (haploid) number of chromosomes is 6 (n: 6)
Explanation:
The unfertilized egg contains a basic (haploid) number of chromosomes (n), being in this case 6. In humans, for example, the gamete haploid cells have a basic n content of 23 chromosomes, while in somatic cells this DNA amount is duplicated (2n), being therefore 46 chromosomes that are organized into 22 pairs of autosomal chromosomes and two sex chromosomes (X and Y).
Please provide a legitimate answer and provide an explanation for the question below.
Why is a supply of oxygen important for muscle contraction?
Answer:
For muscle contraction to take place oxygen is needed. ... Oxygen allows the body to convert glucose into ATP more efficiently without creating a waste product.
Cellular respiration is the process in which your muscles use oxygen to produce ATP energy. ... Whether you're exercising or not, the oxygen in your body is used to break down glucose and create the fuel for your muscles called ATP
ATP= Adenosine triphosphate
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Explanation:
Select all that apply.
Which of the following are functions of stems?
Δ transporting water from the roots to the leaves
Δ transporting water from the leaves to the roots
Δ transporting minerals from the roots to the leaves
Δ transporting minerals from the leaves to the roots
Δ transporting food from the roots to the leaves
Δ support the plant to stay upright
Answer:
-Transporting water from the roots of the leaves .
-Transporting minerals from the roots to the leaves .
-Support the plant to stay upright.
Which of the following hormones is synthesized in hypothalmus and secreted from pitutary? Vasopressi or adrenocorticotropic hormones
Answer:
Vasopressin
It is synthesized in the hypothalamus and then secreted by the posterior lobe of pituitary gland
Match the membrane structures with their function or characteristics.
14
Membrane Structure
Description
11.
Phosphate heads
--Click to select--
& 00:17:18
12.
Fatty acid tails
|--Click to select--
3.
Membrane proteins
--Click to select-
4.
Cholesterol
--Click to select-
v
5.
Glycoproteins
|--Click to select--
1 --Click to select
Cell identification
Receptors, transporters
Hydrophobic interior of membrane
Hydrophilic surfaces of membrane
Maintains rigidity
Answer:
Cell identification-Glycoproteins
Receptors, transporters-Membrane proteins
Hydrophobic interior of membrane-Fatty acid tails
Maintains rigidity-Cholesterol
Hydrophilic surfaces of membrane-Phosphate heads
The the above matches indicated the phospholipid bi- layer of cells.This set up ensures that the cells control the movements of substances across its walls or membranes.
The structure also ensures fluidity of the cells which ensures insulation during cold weather. it also prevents the cell from being too rigid under certain condition.
Explanation:
Which of the following factors might cause checkpoint genes to interrupt cell division? Check all that apply. Neurological signals sent from fear responses in an organism tell the cell to stop. The cell's DNA has been damaged somehow. The cell's DNA was replicated incorrectly.
Answer:
Neurological signals sent from fear responses in an organism tell the cell to stop. The cell's DNA has been damaged somehow. The cell's DNA was replicated incorrectly.
Explanation:
All the three options given can cause checkpoint genes to interrupt cell division.
Checkpoint genes are transcription genes that control cell cycle and sense defects during cells processes like DNA replication, segregation e.t.c and create response till the defects is repaired in the DNA. The important of checkpoint is that it ensure enough nutrients are available to support for division, ensure that the DNA has not been damaged, ensure that cells DNA is copied correctly and make sure cells have enough RNA for their protein synthesis.
Checkpoints genes can interrupt cell division if the dna is damaged, Dna is copied incorrectly and neurological signal sent from fear responses in an organisms tell the cells to stop.
Answer:
The cells DNA has been damaged somehow and The cells DNA was replicated incorrectly
Explanation:
sometimes, these checkpoint genes are mutated or damaged and, thus, are unable to tell a damaged cell to stop dividing. When this occurs, the damaged cell gives rise to many damaged cells, which in turn create more damaged cells. These dividing cells form a NEOPLASM
the frequency of down syndrom increase with
the age of parents ?
Answer:
See below
Explanation:
Researchers found that the rate of Down syndrome among parents over 40 was 60 per 10,000 births, which is six times higher than the rate found among couples under 35 years old.
Two solutions are separated by a semipermeable membrane that is permeable to potassium but not chloride or sodium ions. Solution A on the left contains a solution that is 100 mM potassium, while Solution B on the right has a concentration of potassium chloride of 1 mM. There is an electrode in both solutions, and a comparative assessment of voltages between the two compartments is being made. The investigator doing the study decides to call side B ground potential (or, in other words, defines it as 0).
A. What is the value for the chloride equilibrium potential in this condition?
B. In one sentence, describe why it has a positive or negative value. C. What would be the value of the chloride equilibrium potential? (show how you calculate this) D. What is the voltage of side B relative to side A? E. Does the chloride equilibrium potential contribute significantly to the voltage actually being measured by the investigator? Why or why not (one sentence)?
Which best describes homeostasis
Make a prediction: During the first trial, you will not be able to see how many people have the disease until the end. If no students are immune, how many do you think will have the disease at the end? __________ out of 20
Answer:
all 20
Explanation:
It is impossible to know how many individuals will have the disease at the end without knowing other factors such as the condition where the subjects are being held, trial specifications and safety measures, etc. Based on the information provided, the best prediction that can be made is that all 20 subjects will have the disease. This is because since none of them are immune the disease will spread between the patients/subjects through contact or testing equipment.
Answer:
I put 17 and it didn't say it was wrong.
Explanation:
what is the importance of mastication during digestion
Mastication is the process by which food is crushed and ground by teeth. It increases the surface area of foods to allow a more efficient break down by enzymes.
Court witnesses are asked "to tell the truth, the whole truth, and nothing but the truth." Research shows, however, that eyewitness accounts of crimes often are unreliable because even the most conscientious witnesses misremember details of what they observed. What other factors that might affect the "truth" a court witness presents?
Answer:
Check explanation
Explanation:
The testimony presented by an eyewitness is unreliable for a number of reasons, a few of which are listed below:
1. The witness may give false details about the incident out of fear or pressure.
2. The witness may misidentify a convict and ruin an innocent person's life by putting them in jail.
3. Events are not stored perfectly in one's memory, as research has shown, making eye witness accounts inaccurate.
Part C Having correctly established the F2 ratio in Part B, now predict the F2 phenotypic ratio of a "dihybrid" cross involving two independently assorting genes, A and W, for this cross. WWWWAAAA x wwwwaaaa The F2 ratio would be: ____ dominant W and dominant A individuals : ____ dominant W and recessive a individuals : ____ recessive w and dominant A individuals : ____ recessive w and recessive a individuals Enter your answer as four numbers separated by colons (example: 9:3:3:1).
Answer:
The F2 ratio would be: 1:0:0:0 dominant W and dominant A individuals : 1:1:0:0 dominant W and recessive a individuals : 1:1:0:0 recessive w and dominant A individuals : 1:1:0:0 recessive w and recessive a individuals
Explanation:
All the progeny resulting from this cross will be of an identical genotype (WWwwAAaa) since the parent genotype is homozygous dominant being crossed with homozygous recessive. The phenotypic ratio in this case is 1:0:0:0, indicating that all offspring express the dominant trait and are carriers of the recessive trait.
A flask containing 100ml of YNB broth was inoculated with approximately yeast cells. The flask was incubated at 37 degrees Celsius (100rpm). Samples were periodically collected and their absorbance (optical density-OD) was measured:
Using the given data (shown in photo) calculate the doubling time of this microorganism (FIRSTLY, you have to determine the exponential phase!)
Answer:
The time it takes for the yeast population to double is 1 hour.
Explanation:
Convert the OD to an approximation of the number of cells present in the broth. Do this by multiplying the OD value with 3 x 10^7.
The exponential phase of growth for the yeast cells is from
time t = 0 hours to time t = 5 hours
The molecules in the image below are able to move across the cell
membrane through channels in the membrane proteins. The cell does not use
any energy to move the molecules down the concentration gradient. What
kind of transport is the cell using?
Answer:
A
Explanation:
Why is the Calvin cycle considered a dark reaction
Answer:
because it's the part that doesn't need energy from the sun to happen. The Calvin cycle takes place within the stroma of the chloroplast.
Explanation:
Answer:
The Calvin cycle can occur in the absence of light.
The Calvin cycle requires ATP and NADPH.
Explanation: See Above
thread like structure form body of fungus called....?
Answer:
The answer is Hyphae
Explanation:
The body of fungi is very simple known as mycelium
Answer:
Most fungi grow as thread-like filaments called hyphae. A mass of hyphae make up the body of a fungus, called a mycelium.
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Explanation:
Which describes an atom that has fewer neutrons than protons and more electrons than protons? negative compound positive compound positive ion negative ion
Answer:
Negatively charged ion
Explanation:
Negatively charged ions are called anions and they have more electron than than protons and more protons than nuetrons.
When an atom has fewer neutrons than protons and more electrons than protons, such an atom is said to be an anion. Hence, it is negative ion.
Depending on the number of proton and electron, there are 3 types of atoms:
Neutral atoms in which the proton and electron numbers are balancedCation in which the proton number is more than the electron numberAnion in which the electron number is more than the proton numberIn this case, the atom has more electrons than protons and, therefore, is an anion. The excessive electron makes such atom to be negatively charge.
Therefore, an atom that has fewer neutrons than protons and more electrons than protons is a negative ion.
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A science club has 16 members. How many ways can a president, a vice president, and a treasurer be selected from the members?
A 96
B. 560
OC 1,120
D. 3,360
Answer:
The answer would be D. 3,360
Explanation:
The solution is found by multiplying 16 times 15 times 14. The club has 16 members and after one role (president) is filled, there are 15 left to fill the next (vice). The same goes for the next role (treasurer). So 16 is multiplied with 15, then 14. This is more of a math question that biology btw.
somebody help me please
Answer:
1. evolution
2. variation
3. competition
4. natural selection
Explanation:
What evidence is there that the endangered species act is causing harm to species????
Answer:
There is strong and increasing evidence the Endangered Species Act is causing widespread harm to the species it is supposed to protect-to the extent the Act may be doing more harm than good. The Act makes otherwise normal and legal forms of land and resource use illegal, such as farming, home building and cutting timber. The Endangered Species Act’s severe penalties-$100,000 and/or 1 year in jail for harming a single species or even unoccupied habitat that is deemed suitable-turn species in to liabilities. As a result, landowners seek to reduce their liabilities in a number of ways.
Explanation:
uses of gene cloning in the production of human insulin
Answer:
what's gone cloning tho?
A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a trait that shows simple dominance over Rh negative and is designated by the alleles R and r, respectively. A third gene for the MN blood group has codominant alleles M and N. If both children are of blood type M, list all of the possible parental phenotypes
Answer:type A
Explanation:
Possible parental phenotypes could be mother with blood type A Rh positive and MN or MM while the father will have blood type B Rh negative and MN or MM type.
What is blood typing in humans?Blood typing is a method to tell what type of blood group or blood an individual has. Blood typing is done so a person can safely donate hos or her blood or receive a blood transfusion from another person. It is also done to see if a person have a substance called as the Rh factor on the surface of the red blood cells.
Blood typing in humans is an example of codominance and multiple allelism. Blood group A and B are codominant and O is recessive allele. Rh negative is recessive over Rh positive blood group. A third gene for the MN blood group is codominant, in which M and N are codominant.
In the given question, both the children are of blood type M. In this case, M and N are codominant over each. Therefore, the possible parental combinations can be MN × MN or MM × MN.
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4. EXPERIMENT: 3ml of starch solution is placed into two test tubes (#1 and #2). Lugol's solution is
added to tube #1. Benedict's solution is added to tube #2 and the tube is incubated at 37 C degrees
for 30 minutes.
What color is seen in tube #1?
In tube #2?
Explain these results:
Answer:
Tube 1- blue-black colour
Tube 2- blue colour
Explanation:
Lugol's solution was first prepared by a French Physician, Jean Guillaume August Lugol. It was formerly used as a tuberculosis therapy and it consists of iodine and potassium iodide. It is still used as medication for iodine deficiency and also as an antiseptic.
Benedict's solution is used to test for reducing sugars.
Starch is known to react with iodine to form a blue-black starch-iodide complex. Hence, when a solution of Lugol's reagent is added to the starch, a blue-black colouration is observed due to the formation of the starch iodide complex.
Starch does not react with Benedict's solution because the reducing moieties in starch are not free. When starch reacts with Benedict's solution, even at 37°C, the solution remains blue because the starch ahas not been hydrolysed in order to enable reaction with Benedict's solution.
In many popular fictional movies and books, future projections of the earth (and other fictional planets) show a world devoid of plants, with civilization bustling with activity throughout a worldwide city of skyscrapers hundreds of stories high. Based on your reading about photosynthesis and cellular respiration (Chapters 9 & 10), is this future world possible? Explain why it is or is not possible in terms of energy flow in the biosphere.
Explanation:
Cellular respiration and photosynthesis are two important physiological processes which formed the basis of life on Earth.
Evolutionary studies have shown that process of photosynthesis evolved earlier in organisms which led to the production of oxygen. This led to the formation of aerobic cellular respiration in organisms.
In the given, a world devoid of the plant is not possible because the plants perform the role of primary producers that is they utilize the available carbon dioxide and water and form the first stable energy molecule called glucose.
This glucose is broken down by the process of cellular respiration to further usable form. These two processes maintain the flow of energy on Earth.
Thus, without these two processes, the fictional world will not be possible.
Which natural resource is formed from the deposition of sedimentary rocks?
The answeris Coal to this answer
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Anterior lobe of pituitary gland is
Answer:
The anterior lobe makes up about 80% of the pituitary gland. It regulates growth, metabolism, and reproduction through the hormones that it produces.
Explanation:
The production of these hormones is either stimulated or inhibited by chemical messages sent from the hypothalamus to the pituitary.
Advantages of attached algae
Answer:
Algae is a non flowering plant and found in very most and wet areas.
The Importance of algae include mopping up of the Carbon dioxide present in waterbodies and producing some amount of oxygen to the water through photosynthesis and this helps in the survival of sea animals.
It also helps in pollution control and degradation of hard toxic substances.
They also serve as source of food of sea animals.
Which of the following is not a method of heat transfer? Conduction Insulation Radiation Convection
Answer:
insulation is the correct answer
The method that is not one of the heat transfer method is insulation.
Heat transfer can be regarded a term in thermal engineering use to describe the generation as well as the use and conversion, exchange of thermal energy that exist between physical systems. Heat transfer can be done with different mechanismsThese are: conductionconvectionRadiationConvection can be regarded as the flow of heat in fluids, these fluids could be warmed gas, water.Conduction can be regarded as the movement of heat through objects that are in physical contact, like two metalsRadiation can be regarded as the energy which appears from a source then travels through space, this do contain wave-like properties. Insulation can be regarded as setting up a barrier between two objects, usually between hot and the cold object , so that heat reduction can be achieved.Therefore, Insulation is not heat transfer mechanism, it i a way to reduce heat loss.
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