Answer:
In eukaryotes, there are two distinct types of cell division: a vegetative division, whereby each daughter cell is genetically identical to the parent cell (mitosis), and a reproductive cell division, whereby the number of chromosomes in the daughter cells is reduced by half to produce haploid gametes (meiosis).
name the most suitable apparatus for measuring exactly 1centimeter of hydrochloric acid
Explanation:
measuring cylinder ig
Answer:
Measuring cylinder
Explanation:
Hydrochloric acid is in the form of liquid so to measure liquids (in liters), measuring cylinder is used.
there are more hydrogen atoms in living organisms than any other atoms are asking is more abundant in the terms Mass why is this statement true
Answer:
The statement is true because most organisms are made of water, and water consists of mostly hydrogen (atoms) since its chemical formula is H2O.
What is a major benefit of schooling? reproduction hydrodynamic efficiency division of labor aerodynamic efficiency
Answer:Hydrodynamic efficiency!
Explanation:
The correct answer is hydrodynamic efficiency.
What are the major benefits of school?
Educated people have a high income, many opportunities for life, and tend to be healthy. There are also benefits to society. In a well-educated society, crime rates are low, overall health is good, and there is public involvement. Lack of access to education is considered the root of poverty.
"The main purpose of American schools is to provide all learners with the greatest possible development and to be able to live morally, creatively, and productively in a democratic society."
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Which factors affect the rate of photosynthesis select all that apply
Answer:
Limiting factors such as
Effect of temperature
Effect of light intensity
Concentration of carbon dioxide
These all factors can affect the rate of photosynthesis
Explanation:
I hope it will help you
Answer:
light intestity
rate of oxygen
carbon4oxide concentration
temperature
Macromolecules in the cell can often interact transiently as a result of noncovalent interactions. These weak interactions also produce stable, highly specific interactions between molecules. Which of the factors below is the most significant in determining whether the interaction will be transient or stable?
a) the size of each molecule
b) the number of chemical bonds between the molecules
c) the concentration of each molecule
d) rate of synthesis
Answer:
The correct answer is option b) "the number of chemical bonds between the molecules".
Explanation:
Chemical bonds are the forces that enable the formation of compounds. The number of chemical bonds is a determining factor to know if an interaction will be transient of stable. The more chemical bonds the more stable an interaction will be. Few chemical bonds between molecules makes an interaction unstable and easy to break, enabling transient interactions that are key to certain biological pathways.
Andy, 52, was very surprised when his doctor told him that his blood levels of vitamin D were below normal. After all, he plays tennis or rides a bike on most days. However, he forgot that the time for vitamin D synthesis from sun exposure is only from 10:00 AM to 1:00 PM for most locations in the United States, and he does most of his activities after work. Because his sun exposure is not adequate, he has to rely more on diet and supplements for his vitamin D needs. Andy's doctor asked him to consume 600 IU of vitamin D daily, He is supposed to track his vitamin D intake from foods and take a supplement if he does not meet his daily goal. It sounded easy, but he was up for a surprise. Some foods had the amounts of vitamin D listed in micrograms, others in IU. Most supplements have the amounts of vitamin.Below is Andy's vitamin D intake from the food he consumed yesterday Low-fat Yoplait yogurt-2 μg Cheerios cereal-1 μg Coffee with milk-07μg Turkey sandwich on whole-wheat bread with large garden salad-0.4 g Grilled pork chop. 8 oz. with mashed potato and a side of gnled mixed vegetables-1.6 μgA. How many IU of vitamin D did Andy consume yesterday? B. Has Andy met his vitamin D RDA? Does he need a supplement? 1. Yes, he met his RDA and does not need a supplement.2. No, his vitamin D intake was below RDA, and he needs a supplement.C. What percentage of the vitamin D RDA did Andy eat from food?
Answer:
A. Total Vit D intake = 1150000212 IU
B. Yes he met his RDA and does not need any supplements
C. 191666702%
Explanation:
I μg = 40 IU
1 oz = 28.35 g
I g = 1000000 μg
A. Low-fat Yoplait yogurt-2 μg = 2 * 40 IU = 80 IU
Cheerios cereal-1 μg = 40 1U
Coffee with milk-07μg = 0.7 * 40 = 28 IU
Turkey sandwich on whole-wheat bread with large garden salad-0.4 g = 0.4 * 1000000 * 40 IU = 16000000 IU Grilledd pork chop. 8 oz = 28.35 * 1000000 * 40 = 1134000000 IU
mashed potato and a side of gnled mixed vegetables-1.6 μg = 1.6 * 40 = 64 IU
Total vitamin D intake = 1150000212 IU of Vit D.
B. Since his RDA is 600 IU, he met his RDA and does not need any supplements of Vit D.
C. Percentage of his RDA Vit D intake = (1150000212/600) * 100% = 191666702 %
Which of the following statements about ATP-powered pumps is NOT true? All ATP-powered pumps contain at least one transmembrane domain. F-class and V-class pumps transport the same ion but in opposite directions. Only P-, F-, and V-class pumps transport ions. ABC transporters are found in organisms ranging from bacteria to humans.
Answer:
Only P-, F-, and V-class pumps transport ions.
Explanation:
The distinct classes of ATPases include:
1) Only the P-type ATPase actively transports ions across biological membranes. P-ATPases (also named E1-E2 ATPases) are found both in plasma and organelle membranes. These ATPases serve to transport ions and phospholipids by hydrolyzing ATP to ADP and phosphate.
2) A- and F-ATPases synthesize ATP by transforming the energy from a gradient of ions across the cell membrane.
3) V-ATPase (also known as Vacuolar-H+ ATPases) acidifies vacuole, lysosome, endosome and Golgi membranes. This type of ATPase couples the hydrolysis of ATP to the active transport of protons across biological membranes.
4) E-ATPases hydrolyze extracellular ATP.
An ATP power ion pump is one that is used by the cells in order to generate ions gradients at the expanse of ATP hydrolysis and these pumps have to differ from each other. As they consist of 2-10 polypeptide chains.
They are also called sodium-potassium pumps and move the sodium ions to the potassium ions into the cell. P ions calls is one that of the phosphorylation, V ions pumps have exclusively protons, and the F ions pulps don't involve phosphoprotein.Hence the option C is correct.
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If the Hemoccult test result is negative, no further testing is done. If the Hemoccult test result is positive, the individual will have a second stool sample tested with the Hemoccult II test. If this second sample also tests positive for blood, the individual will be referred for more extensive evaluation. What is the effect on net sensitivity and net specificity of this method of screening
Answer:
Hemoccult test sensitivity is 89.3% and specificity is 92.7%
Explanation:
Hemoccult test is a test that is carried out in order to find out the presence of occult blood in your stool. This method is used to detect colorectal cancer in your body. Blue color of the blood indicate that the test is positive while the green color represents that the test is negative. Test sensitivity is the ability of a test which identify the person who is affected with the disease i. e. true positive, whereas test specificity is the ability of the test to correctly identify the patient without the disease. The value of sensitivity of the Hemoccult test is 89.3% the specificity is 92.7%, and the positive predictive value is 2.5%.
20. Which action removes carbon dioxide from the body?
exhaling
sneezing
swallowing
inhaling
Answer:
exhaling
Explanation:
when inhaling oxygen is taken in and exhaling carbon dioxide is taken out
Answer:
exhaling
Explanation:
This is because exhaling is the process of removing carbon dioxide from the body .
Each of two parents has the genotype brown divided by red, which consists of the pair of alleles that determine hair color, and each parent contributes one of those alleles to a child. Assume that if the child has at least one brown allele, that color will dominate and the child's hair color will be brown. a. List the different possible outcomes. Assume that these outcomes are equally likely. b. What is the probability that a child of these parents will have the red divided by red genotype? c. What is the probability that the child will have brown hair color?
Answer:
Explanation:
From the given information:
Each of two parents has the genotype brown divided by red
So ;
The man's genotype is : [tex]\mathbf {\dfrac{Brown}{Red}}[/tex]
The woman's genotype is : [tex]\mathbf {\dfrac{Brown}{Red}}[/tex]
This [tex]\mathbf {\dfrac{Brown}{Red}}[/tex] genotype consist of the pair of alleles that determine hair color
Now; we are given an assumption that:
if the child has at least one brown allele, that color will dominate and the child's hair color will be brown.
i.e Brown allele is dominant to Red allele
(a) List the different possible outcomes.
The cross between :
[tex]\mathbf {\dfrac{Brown}{Red}* \mathbf {\dfrac{Brown}{Red}}}[/tex] will produce the following offsprings which is the different possible outcomes.
[tex]= \mathbf {\dfrac{Brown}{Brown} \ \ : \ \ \mathbf {\dfrac{Brown}{Red}} \ \ : \ \ \mathbf {\dfrac{Red}{Brown}} \ \ : \ \ \mathbf {\dfrac{Red}{Red} }}[/tex]
(b) . What is the probability that a child of these parents will have the red divided by red genotype?
The probability that the child of these parents will have [tex]\mathbf {\dfrac{Red}{Red} }}[/tex] is one out of four
i.e
= 1/4
= 0.25
(c) What is the probability that the child will have brown hair color.
We are being told that; if the child has at least one brown allele, that color will dominate and the child's hair color will be brown.
i.e Brown allele is dominant to Red allele
Thus; from above we will see that three of the offsprings have at least one brown allele;
Thus; the probability that the child will have brown hair color is = 3/4
= 0.75
A possible explanation for the differences in structure, function, and behavior between
chimpanzees' and humans is provided by the
bota
Answer:
The theory of evolution by natural selection
Explanation:
Nowadays, it is widely accepted that chimpanzees are primates closest related to us. Darwin's postulated "The theory of evolution by natural selection", in the book "On the Origin of Species" in 1859. It is a theory that explains how species evolve over successive generations by gradual changes and the selection of the most adaptive phenotypes. Anatomical, fossil, and genetic evidence support the idea of an evolutionary link as Darwin predicted between hominids (humans) and other primates.
In regard to genetic evidence, whole-genome sequence analyses have shown that humans and chimpanzees share about 98% of sequence homology. Moreover, according to the phylogenetic tree, both species evolved from one common ancestor that was present approximately 4 million years ago.
In regard to anatomical and fossil evidence, it has been discovered that the chimp brain has a similar size to human extinct relatives, and thereby also supporting an evolutionary link between both species.
Which is one characteristic of producers
Answer:
They make their own food
Answer:
B.) they do not eat other organisms
Explanation:
When two pink flowers (RW) are crossed, there are four equally likely possible outcomes for the genetic makeup of the offspring: red (RR), pink(RW), pink(WR), and white (WW). If two pink snapdragons are crossed, what is the probability that the offspring will be (a) pink, (b) red, and (c) white?
Answer:
a) 50% chance of being pink
b) 25% chance of being red
c) 25% change of being white
Explanation:
Since neither the R allele or W allele is dominant over the other, this is codominance. If 2 pink ones are crossed, that means both of them are RW
If we draw out the punnet square
R W
R RR RW
W RW WW
There is a 1:2:1 ratio of Red to Pink to White
Therefore
a) 50% chance of being pink
b) 25% chance of being red
c) 25% change of being white
A woman with type A blood (whose father was type O) has children with a man that has type O blood. Both individuals are heterozygous for the MN antigen. Recall that MN blood group antigens are independent of the ABO locus, and that the alleles are codominant.
How would the results from Part A change if both parents are also heterozygous for the FUT1 gene controlling the synthesis of the H substance (Hh)?
Drag the correct value to the blank following each offspring type.
Type A with M antigen:_________.
Type A with M and N antigens:_________.
Type A with N antigen:__________.
Type O with M antigen:__________.
Type O with M and N antigens:__________.
Type O with antigen:_________.
Options: 0, 1/32, 3/32, 5/32, 6/32, 10/32, 1
Answer:
Explanation:
A woman with type A blood (whose father was type O) meaning her genotype is AO mates with
Man that has type O blood (OO genotype)
Both are heterozygous for MN blood group and both also heterozygous for the FUT1 gene controlling the synthesis of the H substance (Hh)- which determines the expression of the A and B antigen.
Cross
A O M N H h
O AO OO M MM MN H HH Hh
O AO OO N MN NN h Hh hh
Type A- 1/2 O-1/2 type M- 1/4 MN-1/2 N- 1/4, type H- 3/4 h-1/4
Type A with M antigen:
1/2*1/4*3/4 = 3/32
Type A with M and N antigens:
1/2*1/2*3/4 = 3/16
Type A with N antigen:
1/2*1/4*3/4 = 3/32
Type O with M antigen:
1/2*1/4*3/4= 3/32
Type O with M and N antigens:
1/2*1/2*3/4 = 3/16
Type O with N antigen:
1/2*1/4*3/4 = 3/32.
The 3/4 value comes from the expression of Hh-3/4 (this determines if the A and B Angie will be expressed).
In your own words, explain why the geological structures in Florida are less complex than the geological structures in Colorado.
Answer:
Different parts and regions have distinct features and characteristics.
Colorado is known to have lots of mountains. Florida is however a humid-subtropical region. This makes differences in the types of loving organisms found in the named region. There are also different ages in geological structures.
Colorado has lots of rocks in the region and is as result of the presence of rigid hills and mountains while Florida is more tropical and has a coastal processing climate with low prevalence of rocks.
Endotoxins Check All That Apply are released when a gram-negative cells lyses.are released when a gram-negative cells lyses. are synthesized and exported from the cell during the initial stages of infection.are synthesized and exported from the cell during the initial stages of infection. may cause septic shock.may cause septic shock. are small protein molecules.are small protein molecules.
Answer:
are released when a gram-negative cells lyses.
May cause septic shock.
are synthesized and exported from the cell during the initial stages of infection.
Explanation:
Endotoxins are liposacharides and toxic substances found in the outer membrane of gram negative bacteria. They are toxins produced within the cell of bacteria. These toxins are released when the bacteria ruptures or disintegrates. This can happen as a result of the immune system or antibiotics attack the bacteria and break down their cell walls. It causes inflammation and shock.
It can cause uneccessary proapoptotic in immune system during during sepsis resulting in damage to immune system which cause septic shock.
Statements that are right as regards Endotoxins are:
are released when a gram-negative cells lyses.
May cause septic shock.
are synthesized and exported from the cell during the initial stages of infection.
Endotoxins can be regarded as complex lipopolysaccharides , this is can be seen as the outer cell wall of (gram negative bacteria). They are been released when there us lyses of gram-negative cells and their synthesis and exportation are from cells at the initial stages of infection.Therefore, they cause cause septic shock.
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The passage describes some glycolysis reactions. Select the appropriate term for each blank to complete the passage. In the first reaction of glycolysis, glucose is converted to glucose 6‑phosphate . The phosphate comes from ______.
A __________is an enzyme that transfers the terminal phosphate of A isomerase glucose 6-phosphate to fructose-6-phosphate to a substrate. The product of this reaction is then isomerized reaction, giving Fructose-6-phosphate is then phosphorylated by a second isomerase fructose 1,6-bisphosphate
Answer:
JUST VOODSE
Explanation:
BRIUH
which of the following occurs after tsunami and forest fire?
a) primary succession
b) quaternary succession
c) secondary succession
d) tertiary succession
Answer:
secondary succesion
Explanation:
C)Secondary succession occurs after a tsunami and forest fire.
Does secondary succession occur after a forest fire?Secondary succession begins when a disturbance (together with wind storms, insect outbreaks, logging, avalanches, bulldozers, or fireplace) leaves the soil intact. Seeds, spores, and roots generally stay as nicely. sites that start with secondary succession reach the following degree greater quickly than during primary succession.
Secondary succession happens while a climax network or intermediate community is impacted with the aid of a disturbance. This restarts the cycle of succession, however not returned to the start soil, and nutrients are still gifts.
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The next morning your team returns to work in the laboratory, where you get a call from the sheriff. The family of the three missing boys is pressuring him for information. Your team begins the final osteological exam. After careful examination, you produce your final inventory. You are working with the same number of bones, but you now have determined which side of the body they come from (when applicable).
You have:_______.
• 3 skulls
• 6 femora (4 right and 2 left)
• 4 os coxae (All adolescent males, 1 right and 3 left)
• 2 humeri (both right)
• 2 tibiae (both left)
• 5 scapulae (3 right and 2 left)
1. Based on the revised inventory, would you change your MNI? If so, what would be the new MNI?
2. What do you tell the sheriff? Are these the missing boys?
Answer:
See below
Explanation:
1. Yes, the MNI ought to be changed in light of the revised inventory. Since 4 of the 6 femora are right sided, they would belong to different individuals, so the MNI would now be stated as 4.
2. The sheriff would be told that the possibility of suspecting 22 individuals is very narrow, though not impossible. It is also unlikely that the victims are numbered less than 4 in accordance to the bones found.
how do greenshouse gases affect earth
Answer:
Burning fossil fuels like coal and oil puts more carbon dioxide into our atmosphere. NASA has observed increases in the amount of carbon dioxide and some other greenhouse gases in our atmosphere. Too much of these greenhouse gases can cause Earth's atmosphere to trap more and more heat. This causes Earth to warm up.
Answer:
Burning fossil fuels like coal and oil puts more carbon dioxide into our atmosphere.
Explanation:
If carbon dioxide gets into the air, it'll damage the air we breathe in.
Classify the following as definitions or examples of chemical digestion or mechanical digestion. Because of the nature of this process, some choices will be used more than once. Other choices may not be used at all
a. Chemical digestion
b. Mechanical digestion
1. Salivary glands produce an important substance for this type
2. Begins with chewing Involves the teeth and tongue
3. Breaks down starch, protein carbohydrates, fats, and nucleic acids
4. Gastric glands produce important substances for this type
5. Takes place in the mouth
6. Takes place in the large intestine
7. Takes place in the stomach
8. Takes place in the esophagus
9. Requires pankreatic juices and enzymes produced by the wall of the small intestine
10. Takes place in the small intestine
Answer:
Mechanical digestion:Begins with chewing Involves the teeth and tongue
Chemical digestion: Breaks down starch, protein carbohydrates, fats, and nucleic acids. Salivary glands produce an important substance for this type
Requires pancreatic juices and enzymes produced by the wall of the small intestine
Explanation:
Mechanical digestion starts in the mouth, it involves the breaking down of food into smaller particles.
Chemical digestion involves the breaking down of food into nutrients component that can be absorbable and used by the body cells.
It begins when the food mix with saliva in the mouth.
Chemical digestion starts from the mouth as the food mixes with saliva, Carbohydrate is been digested in the mouth while protein digestion takes place in the stomach. The pancreas produces important enzyme needed for digestion in the stomach.
Why are proteins considered organic molecules?
A. They contain many carbon atoms.
B. They contain many nitrogen atoma.
C. They are very small
D. They are not used by living things.
SUBMIT
Answer:
A) They contain many carbon atoms.
Explanation:
Proteins are considered organic molecules because they are made up of carbon atoms. Proteins give your body energy and allows your body to run the way it does. Proteins also aren't considered organic molecules because they are small, because they are not used by living things, or because they contain nitrogen.
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Punnet and his colleagues mated a purebred purple flower, long pollen sweet pea with a pure-bred red flower, round pollen sweet pea and obtained an F1 with purple flower and long pollen. What mating should they do to determine the recombination frequency between the gene that controls the color of the flower and the gene that controls the shape of the pollen?
Answer:
Cross an individual of the F1 with the purebred red flower, round pollen sweet pea parental.
Explanation:
The parental individuals are:
PL/PL: purebred purple flower, long pollen sweet peapl/pl: pure-bred red flower, round pollen sweet peaThe resulting F1 of the cross between the different parental types can only be PL/pl, which has purple flowers and long pollen. This means that the purple flower (P) and long pollen (L) traits are dominant.
To determine the recombination frequency between genes P/p and L/l, the cross should be done between a heterozygous individual for both genes (the F1) and a homozygous recessive individual for both traits (the pl/pl parental). This is called a test cross.
Match the key event of meiosis with the stages listed below.
I. Prophase I V. Prophase II
II. Metaphase I VI. Metaphase II
III. Anaphase I VII. Anaphase II
IV. Telophase I VIII. Telophase II
Homologous chromosomes are aligned at the equator of the spindle.
a. IV
b. I
c. VI
d. II
Answer:
The answer is II. Metaphase I VI. Metaphase II
what is a spinal cord
Answer:
The spinal cord is a long, thin, tubular structure.
Explanation:
The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column. It encloses the central canal of the spinal cord, which contains cerebrospinal fluid.
Answer:
it is a tissue
Explanation:
1. 4. Do some research and describe two or three scenarios in which it would be preferable to use a stab tube vs. a growth plate. (Hint: What do bacteria use to help them move? Can motility be used to help identify many medically important pathogenic bacteria such as the Enterobacteriaceae?)
Answer and Explanation:
If we want to isolate a species or identify it, we should grow it in a plate with the appropriate media. In this way, it will be much easier to separate a single cell and analyze it by its morphology or study the colony growth. Stab tubes can be used when we want to study, for example, how a bacteria might grow under low-oxygen conditions. Cells might be inoculated in a liquid media or semi-solid media. We might analyze their growth in the deeper parts of the tubes, where oxygen is very low. Grow bacterias cultures in agar plates will also allow us to separate the species of interest form other species present in the culture. We might also compare and study differences between species growth. When growing bacterias on growth plates, they do not last long, as they have more chances of dehydrating. Instead, if we want the culture to survive for a longer-term, we should use stab tubes. Stab tubes are better to study the motility of different species, which might help us to identify certain bacterias of interest.Why are enzymes important to cells? Why does an egg change color and texture when heated?
Which of these actions can the Consumer Product Safety Commission take
to help protect consumers?
O A Force a store to issue store credit
O B. Mediate a disagreement between a consumer and a store
O C. Recall an unsafe product
O D. Make a company repait a damaged product
Answer:
C. Recall an unsafe product
The Consumer Product Safety Commission (CPSC) is a U.S. government agency that is responsible for protecting consumers from unsafe products that are in Option C. The CPSC has the authority to take various actions to help protect consumers.
What is the Consumer Product Safety Commission?The CPSC has the authority to recall any consumer product that poses a substantial risk of injury or death to consumers. The CPSC can require companies to recall their products, issue warnings to consumers, and take other appropriate actions to protect the public. Forcing a store to issue store credit is not a typical action that the CPSC would take to protect consumers. While the CPSC can investigate complaints and take legal action against companies that violate safety standards, it does not have the authority to force stores to issue store credit.
Hence, the Consumer Product Safety Commission (CPSC) is a U.S. government agency that is responsible for protecting consumers from unsafe products that are listed in Option C.
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greater temperature fluctuations occur where
IF Avery, Macleod, and McCarty had found that samples of heat-killed bacteria treated with RNase and DNase transformed bacteria, but samples treated with protease did not, what conclusion would they have made
Answer:
See the answer below
Explanation:
The conclusion that Avery, Macleod, and McCarty would have made assuming that samples of heat-killed bacteria treated with RNase and DNase transformed bacteria, but samples treated with protease did not would be that protein is responsible for the transformation of the non-virulent bacterium strain to a virulent one.
According to the findings of the 3 researchers, heat-killed virulent strain of Streptococcus pneumoniae transformed non-virulent strain of the same species into being virulent. They were able to discover that the molecule responsible for this transformation was DNA.
If the heat-killed virulent strain had been treated with RNase and DNase, this would have degraded RNA and DNA in the heat-killed cells respectively, leaving only protein as the carrier of the virulence factor. Confirmation of the transforming attribute of the protein can be further be confirmed by treating the heat-killed mixture with protease, a protein degrading enzyme.