Answer:
The experiment supports the hypothesis that maggots arise only from eggs laid by adult flies; that is only from reproduction and development.
Explanation:
The objective of this experimental set up by Francesco Radi was to demonstrate the concept of spontaneous generation. He concluded that, Maggots are not spontaneous generated from rotten meats, rather they are products of eggs laid by houseflies who visited the rotten meat to lay eggs. The maggots (larva) are products of complete metamorphosis, from egg to larva to pupa and adult. This is an indication that, new organisms are not formed form spontaneously, but are products of well-defined process of reproduction and development which in this case is a complete metamorphosis.
Based on this premise he concluded that, if maggots were products of laid eggs, then they should appear only when rotten meat is exposed to open air.However,if they are f products of spontaneous generation they should appear irrespective of the meat exposure to air or not.
Several genes in humans in addition to the ABO gene (I ) give rise to recognizable antigens on the surface of red blood cells. The MN and Rh genes are two examples. The Rh locus can contain either a positive or a negative allele, with positive being dominant to negative. M and N are codominant alleles of the MN gene. Suppose a child's blood type is B MN Rh(neg). The mother's blood type is O N Rh(neg). Check all of the blood types below that the father could have. (Assume no involvement of the Bombay phenotype; everyone is HH).
A. O M Rh- O M Rh -
B. B MN Rh+ B MN Rh+
C. A M Rh+ A M Rh+
D. O MN Rh+ O MN Rh+
E. B MM Rh+ B MM Rh+
F. B NN Rh-
Answer:
Option B and E
Explanation:
Since the child's blood type is
B (BB or BO) MN Rh(neg)
The mother's bloodtype is
O (OO) N (NN) Rh(neg)
To produce a child with the B bloodtype when mother is OO, the father has to have either one or two copies of the B bloodtype (BB or BO).
To also produce a child with MN Bloomington when mother is NN, the father has to have either the M (MM) bloodtype or the MN bloodtype.
Thus, the father's bloodline could be
B M bloodtype Rh(+)
Or
B MN bloodtype Rh(+)
Whichofthefollowingisnotapropertyofwool-
1) Elasticity 2)poorconductorofheat 3)resistancetotearing 4) good conductor of heat.
Answer:
Option 4
Explanation:
Wool is not a good conductor of heat. It is rather a bad conductor of heat.
Which of the following statements regarding membrane transport proteins is NOT true? Facilitated transport is required to move any molecule against its concentration gradient. Both transporter proteins and ATP-powered pumps represent active transport. Uniporter transport is fast, reversible, and highly specific. Uniporters move ions faster through membranes than do ion channels.
Answer:
Uniporters me be ions faster through membranes than do ion channels
Explanation:
Membrane transport protein is a membrane protein that help to function in moving ions, small molecules and macromolecules across a biological membrane.The proteins may assist in the movement of substances by facilitated diffusion or active transport.
Uniporters are membrane transport protein that move one species of substrate across the cell membrane.ion channels move ions faster than uniporters membrane because they are pore forming membrane that allow ions to pass it's pore freely.
12. Researchers have spent decades and several millions of dollars studying diabetes among the Pima and Tohono O’odham tribes. Why hasn’t their research yielded a genetic explanation for the high rates of the disease?
Answer:
A link between cardiometabolic risk factors and race and ethnicity have been studied. It has been found that the rates of cardiometabolic risk factors are higher among ethnic minority populations such as African Americans, Hispanic Americans, and Native Americans.
Which level of protein structure is formed by the sequence of amino acids bonded together?
Select one:
a. Primary
b. Secondary
c. Tertiary
d. Quaternary
e. Both tertiary and quaternary
Leela is a 16 year old girl free complaint of tiredness and loss of appetite shows unable to concentrate at 4:00 p.m. Thailand and healthy to the doctor and the doctor told her I request because of a poor diet what condition is likely to have what dietary changes should be advised
Answer:
-Malnutrition ( undernutrition)
Malnutrition is a condition in which an individual meal contains principally of a particular class of food, while other classes are deficient. In this case, Leela ,should be have consumed too much rice,CHO( Thailand is associated with high rice production) with less protein and other nutrients .These therefore affects her nutritional and electrolyte balance.
A well balanced diet which contains all the needed classes of food in correct proportion should be taken,
The ________ secretes _________ into the _________. A. Liver; gastrin; pancreatic duct B. Pancreas; pepsinogen; common hepatic duct C. Gallbladder; bile; common bile duct D. Pancreas; bile; pancreatic duct E. None of the above
Answer:
D. Pancreas;bile;pancreatic duct
According to the question, Pancreas; bile; pancreatic duct is the correct answer.
Digestive enzymes are substances that help you digest your food. They're secreted by the salivary glands and cells lining the stomach, pancreas, and small intestine.
What hormones does the stomach secrete?The lining of the stomach, the gastric mucosa, produces a hormone, called gastrin, in response to the presence of food in the stomach. This hormone stimulates the production of hydrochloric acid and the enzyme pepsin, which are used in the digestion of food.
Thus, Option "D" is correct.
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1. Endoplasmic Recticulm is to mitochondrion as road is to... A. control center, B. Generator, C. Storage tank, D. Toll gate, E. Fed Ex. 11. Peptide bonds are found in. A.Saturated fats, B. Unsaturated fats, C. Carbohydrates . D. Proteins. E. Nucleic Acids. 12. What happens to an enzyme after the reaction is compleated? A.It is released and broken down by the cell. B. It is released and reused by the cell as an energy source. C. It is released and used again. D. It is used up in the chemical reaction that takes place. E. It is reorganize during the reaction. 18. The breakdown of large molecules by the enzmatic addition of water is what kind of reaction? A.Oxidation B. Reduction C. Condensation D. Hydrolysis E. Decaroxylation 19. A reaction of a acid and a base will produce water and A. a buffer B. a salt C. Release oxygen gas D. Adiffernt acid and base. E. Release hydrogen gas. 28. The complete hydrolysis of a protein results in the formation of A. protein B. Monosaccharides C. animo acids D. sugars 34. Creutzfeld jackob disease is caused by a A. Prion B. Virus C. Viroid D. Bacterium E. Protist
Answer:
1. C
Explanation:
1. Unlike catastrophism, _______ states that mountains formed slowly over time. 2. William Smith was working as a surveyor in the late eighteenth century. He noticed that certain fossils were found in certain layers of sedimentary or igneous rock, that the same order of strata could be found in areas that were far apart, and these strata contained similar _______. 3. The Permian Period lasted from 299 Ma to 251 Ma. This means that the Permian Period lasted _______ years.
Answer:
uniformitarianism, Fossil groups, 48 million years ago.
Explanation:
Uniformitarianism is the doctrine of uniformity that assumes that same environmental laws and process operate till date that has also occurred on the past but not with the same uniformity. Unlike the atmospheric that is short-lived and sudden changes over the period of time. William Smith was a geologist who has noticed a certain type of fossil in a certain layer of sedimentary and igneous rock. A similar layer of strata could be found in the areas that were further apart. The Permian period was from 229 to 251 million years and was the last period of the paleozoic era and is recorded for the last major extinction in the history of life in earth and it lasted for 48 million years.Answer:
1. uniformitarianism
2. fossils
3. 48 million
Explanation:
Just did it on Penn Foster
What evidence provided supports the claim that "a high level of testosterone provides an unfair advantage in women’s athletics? is this adequate evidence? explain your answer.
Answer:
Although higher levels of testosterone in women cause an increase in muscle mass, this condition is also associated with health problems including, among others, infertility, polycystic ovarian syndrome, hirsutism, sleep apnea, irregular menstrual cycles and obesity, and therefore affecting their athletic performance.
Explanation:
A high level of testosterone in females not only influences their physical appearance, and its imbalance has been associated to health issues that affect women's athletic achievement. Testosterone is a hormone that controls gene expression in multiple organs and one of the most important metabolic regulators of sugar, lipids and proteins, thereby level higher than normal may cause the loss of the organism's homeostasis in women.
why are fatty acids important to the cell membrane?
Answer:
Fatty acids are important to the cell membrane for mammalian cells in order to perform various biological functions.
Which of the following is not a function of fat in the human body? carries the water-soluble vitamins provides long-term energy storage cushions the internal organs from physical shock provides the major material from which cell membranes are made protects the body from temperature extremes
Answer:
carries the water-soluble vitamins.
Explanation:
Fat is hydrophobic, and solid at rooms temperature. Therefore polar and hydrophilic substances cannot dissolve in it.Thus it is not possible for fats to convey these substances. Lipid soluble nutrients are usually convey by fats.
All other options are carried out by fats.
this for Earth/Space Science B-CR
Which statement describes one aspect of an earthquake’s magnitude?
It is measured by the Mercalli scale.
It is based on the size of seismic waves.
It is not usually affected by the amount of fault movement.
It is used to determine damage caused by earthquakes.
THE ANWER IS :B THE SEC ONE
Answer:
It is based on the size of seismic waves
Explanation:
Generally, the size of an earthquake is called its magnitude.
Earthquake’s magnitude is defined as the measure of the amplitude of the seismic waves. A seismometer or seismographs are used to measure seismic waves. So, the statement describes one aspect of an earthquake’s magnitude is that Earthquake’s magnitude depends on the size of seismic waves.
Earthquake’s magnitude is measured by the Richter magnitude scale.
Hence, the correct answer is It is based on the size of seismic waves.
Answer:
It is based on the size of seismic waves.
Explanation:
Seismic wave is an elastic wave in the earth produced by an earthquake or other means used to measure the magnitude
What is the difference between sensory, motor and relay neurons?
Answer:
Sensory neurons are found in receptors such as the eyes, ears, tongue and skin, and carry nerve impulses to the spinal cord and brain. Relay neurons are found between sensory input and motor output/response. Relay neurons are found in the brain and spinal cord and allow sensory and motor neurons to communicate.
Explanation:
Hope it really helps
Fur color in mice is affected by a single gene. The gene for fur color has two alleles: B that causes dark brown fur, and b that causes light brown fur. In a mouse with dark brown fur, the genotype could be BB or:_________
Answer:
The genotype could be BB or Bb
Explanation:
The genotype could be Bb which means it has heterozygous alleles.
The B which is allele for dark brown fur is dorminant and b for light brown is recessive. In this case, the dorminant allele masked the effect of the recessive allele b which make the dorminant allele B to be expressed phenotypically.
How have the fields of biotechnology, genetic engineering, and molecular biology affected the agricultural job
market?
A.They have created more jobs
B.They have spread the industry internationally
C.They have made the market obsolete
D.They have decrease the demand for farmers
Answer:
I think It's A. Hope it helps! :)
Explanation:
If an organism has six pairs of chromosomes, how many different gametes can be produced?
Answer:
6
Explanation
Six different types of chromosomes constitute a haploid set of chromosomes. Two chromosomes of the same type are called homologous chromosomes and these constitute a homologous pair.
The cells producing sex cells or gametes undergo meiosis (reduction division) so that each gamete contains only one chromosome of a homologous pair.
The gametes are haploid, having half the number of cells as compared to somatic cells.
The gametes or sex cells produced by the organism will have 6 chromosomes if the organism has 12 chromosomes
Answer:
It's 64
A.P.E.X approved
1. D Value is determined as a
A. Removing of microorganisms by washing
B. Concentration of disinfectant required to reduce microbial population 10 times
C. Time required to kill 10% of microbial population
D. Time frame in which microbial population of 5,600,000 cells would decrease to 560,000 cells
E. None of the above
2. The betadine or alcohol swab before blood donation is an example of A. Pasteurization
B. Disinfection
C. Sterilization
D. Preservation
E. None of the above
Answer:
1. D. Time frame in which microbial population of 5,600,000 cells would decrease to 560,000 cells.
2. Disinfection
Explanation:
Hope it helps .
How can a forensic palynologist help a crime investigation?
Answer: A forensic palynologist can help a crime investigation because they can examine the pollen in the victim and compare it with the pollen from the suspects by using a comparison microscope to tell if it's a match.
Answer: Well, forensics is the study of the application of science to criminal and civil laws, mainly—on the criminal side—during criminal investigation. So they have an important role in the judicial system because they study criminal reports and files, Identify and classify crime scene evidence through scientific analysis, and then they have to explore possible links between suspects and criminal activity using the results of chemical and physical analyses. So in a crime scene, they might examine the details that they might notice, like the position of the victim or the objects surrounding the scene, test and analyze them, and then follow the leads they get from that.
plz give me brainliest i really need it
Why are enzymes important to cells? Why does an egg change color and texture when heated?
Why did scientists struggle for thousands of years to accurately describe the solar system?
Answer:
they didnt have photography
Explanation:
Answer:
hey there answer is wrong
Explanation:
soooo its that the planets appeared to be moving backwards. i got the answer right plus look it up if you dont belive me, and that wasnt even an answer choice.
Most proteins in present-day mitochondria are made by cytoplasmic ribosomes from mRNA transcribed from nuclear genes. Can this fact be reconciled with the hypothesis described in the passage
Answer: The options are not given, here are the options.
A.Yes; the transfer of genes from symbionts to the eukaryotic nucleus could have occurred during the last billion years of evolution.
B. Yes; this difference from bacteria is unimportant, because the many similarities between bacteria and mitochondria provide sufficient evidence in favor of the hypothesis.
C. No; the fact that mitochondrial proteins are made in the cytoplasm is convincing evidence that mitochondria do not have a bacterial origin.
D. No; because bacteria can make all their own proteins and mitochondria cannot, this disproves the hypothesis.
The correct option is B.
Yes; this difference from bacteria is unimportant, because the many similarities between bacteria and mitochondria provide sufficient evidence in favor of the hypothesis
Explanation:
From the passage, the protein synthesis abilities of bacteria and Mitochondria was spelt out.
Bacteria are unicellular organisms and they are prokaryotic. Bacteria do not have membrane bound organelles like Mitochondria as compared to Eukaryotic organisms.
Mitochondrial and bacteria have certain similarities which include, mitochondria have cell membranes like bacteria and they have circular genome like bacteria.
The similarities shows that most most proteins in mitochondria are made by cytoplasmic ribosomes from mRNA transcribed from nuclear genes.
On occasion, leukemia or lymphoma is discovered in abnormal results of routine blood tests. For example, above-normal white blood cell counts (leukocytosis) can be caused by immune cancers. Other immune cancers are diagnosed by abnormally high levels of antibodies in the blood. The antibody is usually of just one type, indicating that a single cell is dividing uncontrollably and secreting this antibody. What type of immune cell is the likely source of this antibody
Answer:
The serious cell: The plasmacyst or
Explanation:
The plasmacyst is a lymphocytic cell, since the plasmacyst is the maturation of the B lymphocyte.
This cell manufactures antibodies such as immunoglobulins and if it suffers metaplasia or malignancy these will be secreted in equal or greater quantity.
Consider a newly discovered organism that is bioluminescent. Scientists studying this animal have discovered that there are two enzymes necessary for the animal to glow, encoded by the bright and red genes. Furthermore, scientists have confirmed that for bioluminescence to be displayed, an individual must have at least one copy of the dominant allele for each gene, (B and R). Match the genotypes with their correct phenotypes, glowing or nonglowing.
Answer:
Explanation:
I don't really understand the question but if the animal wants to glow or not, BR, Br, bR would be the glowing because it needs at least one dominant. If there is a specific dominant gene let's say "B" then the genotypes for glowing must be Br or BR. If it is non glowing, "br". Since it will not have any domiant allele, then it would not be glowing. I hope this helped
Genotypes with their correct phenotypes glowing: BBRR, BBRr, BbRr, BbRR, non-glowing: bbrr, Bbrr, BBrr, bbRR, bbRr.
What is a genotype?Genotype is the genetic appearance of the organism in which it codes a protein that gives a physical characteristic to the organism.
Glowing: BBRR, BBRr, BbRr, BbRR
Non-glowing: bbrr, Bbrr, BBrr, bbRR, bbRr.
Scientists have confirmed that for bioluminescence to be displayed bright and red genes which are phenotypes that show the physical appearance of the organism.
Therefore genotype for glowing: BBRR, BBRr, BbRr, BbRR, and for non-glowing: bbrr, Bbrr, BBrr, bbRR, bbRr is genotypes with their correct phenotypes and have one copy of the dominant allele for each gene.
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Which process directly moves nutrients from plants to animals
Answer:
consumption process does
Answer:
consumption does
Explanation:
I looked for it :)
This exercise is designed to help understand the naming process of a few se muscle names. The other column is a list of descriptions of which the muscle na match the left column with the right column. The first one is competed to help youg lect muscles. One colunn lists the mes were based on. You are to et started.
Adductor magnus
_____A_______Adductor A. Action (type of movement)
magnus B. Shape
Vastus lateralis C. Site of origin or insertion (Points of attachment)
lateralis D. Number of origins
E. Location to a nearby bone
Biceps femoris
Biceps F. Direction the muscle fibers are oriented
femoris G. Size of muscle
Fibularis longus H. Location to a superficial area
一Fibularis
longus
Popliteus
Popliteus
Answer:
Explanation:
Brachii: H - It means of the arm.
Palmaris: H - It means of the palm of hands.
Longus : G - Longus means long
Brachio: C - It refers to origin on the upper arm.
Radialis: C - It refers to insertion on the radius of the forearm.
Pronator: A - Pronation is inward rotation of part of the body towards middle of the body.
Teres: B - meaning round or cylindrical shape
Deltoid: B - meaning triangular shape
Which would make for a weak claim?
1. a blog cited as the source
2. a large sample size
3. clear variables and controls
4. multiple trials
Answer:
A blog cited as a source
Explanation:
Blogs often contain opinions rather than facts
Which would make for a weak claim?
1. a blog cited as the source
2. a large sample size
3. clear variables and controls
4. multiple trials
When analyzing a cross involving two traits, each trait is analyzed separately, and then the frequencies of each are combined to yield the observed phenotypic ratios. Group of answer choices
Answer:
The correct answer is "True".
Explanation:
The missing options of this question are "true" or "false" and in this case the correct answer is "true". According to the laws of inheritance established by Charles Darwin, the certain traits of species can be analyzed and studied by using crossing experiments. These experiments are performed first by analyzing the traits of each individual separately and second by observing the frequencies of each are combined to yield the observed phenotypic ratios. Different approaches are used to study the frequencies of each allele, and the most widely used is the punnet square approach.
Identify the correct statements about ribosomes. Prokaryotes have 70S ribosomes, while Eukaryotes have 90S ribosomes Prokaryotes and Eukaryotes both have ribosomes Prokaryotes and Eukaryotes have the same kinds and sizes of ribosomes The function of a ribosome is to make protein for the cell
Answer:
prokaryotes and eukaryotes both have ribosomes
Explanation:
because both have ribosomes but those ribosomes are not the same kind
what does a controlled experiment consist of ?
Variable. a factor that can change in an experiment.
Independent Variable. Manipulated Variable, the variable we change.
Dependent Variable. Responding Variable, the variable we measure.
Constant. a variable that does not change.
Control.
Answer:
A controlled experiment consists of:
Variable Independent Variable Dependent Variable Constant ControlExplanation:
In a controlled experiment, an independent variable (the cause) is systematically manipulated and the dependent variable (the effect) is measured; any extraneous variables are controlled. The researcher can operationalize (i.e. define) the variables being studied so they can be objectivity measured.
Hope this helps.. Good Luck
