Answer: D
Explanation:
The answer no is correct it’s correct because the scientist followed personalities which is pseudoscience. So D is the answer.
Which characteristics is used to identify an amino acid?
Answer:
Each amino acid contains a central C atom, an amino group (NH2), a carboxyl group (COOH), and a specific R group. The R group determines the characteristics (size, polarity, and pH) for each type of amino acid.
Explanation:
In order to identify an amino acid, there are several characteristics that can be used. One of the main characteristics is the presence of an amino group (-NH2) and a carboxyl group (-COOH) in the molecule.
What are the key characteristics of amino acids?This is a functional group containing a nitrogen atom, represented as -NH2. All amino acids have an amino group attached. This is another functional group present in amino acids, represented as -COOH.
Other key characteristics include the presence of a side chain (R group) that can be polar, nonpolar, or charged, and the ability to form peptide bonds with other amino acids.
Amino acids are the building blocks of proteins and are essential for many biological processes. There are 20 different amino acids that are commonly found in proteins, each with its own unique side chain and properties.
By understanding the characteristics of these amino acids, scientists can better understand the structure and function of proteins and how they contribute to the workings of the body.
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Enzymes are
that act as biological catalysts. Enzymes speed up chemical reactions by lowering activation energies.
Answer:
Enzymes are biological catalysts that speed up chemical reactions by lowering the activation energy. Enzymes are proteins comprising one or more polypeptide chains. Enzymes have an active site that provides a unique chemical environment made up of certain amino acid R groups (residues).
1. Describe the general structure of atom
Answer:
toms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).
Explanation:
An atom is composed of two regions: the nucleus, which is in the center of the atom and contains protons and neutrons, and the outer region of the atom, which holds its electrons in orbit around the nucleus.
Protons and neutrons have approximately the same mass, about 1.67 × 10-24 grams, which scientists define as one atomic mass unit (amu) or one Dalton.
Each electron has a negative charge (-1) equal to the positive charge of a proton (+1).
Neutrons are uncharged particles found within the nucleus.
The number of living organisms in a particular area is _____. population density population community carrying capacit
Answer:
Hey!
Your answer is definitely POPULATION!
Explanation:
HOPE THIS HELPS!!
What are the monomers of carbohydrates called?
Answer: Monosaccharides are the monomers of carbohydrates and are often referred to as “the simple sugars”.
Explanation: Monomers are the basic building blocks of larger organic molecules. Monosaccharides are the monomers that make up carbohydrates. Glucose is an example of a monosaccharide. Glycerol and fatty acids are the monomers that make up lipids.
Enzymes are active at which temperature
range?
A. 4 to 45 degree centigrade
B. 0 to 4 degree centigrade
C. 0 degree centigrade
D. above 50 degree and centigrade
A pumpkin has a mass of 314 ounces.Based on the tiles below, what is the mass of the pumpkin in kilograms
Use the mechanisms of meiosis to explain why most mules are sterile.
Use your knowledge of the mechanisms of meiosis to explain why most mules are sterile.
1. An even number of chromosomes are required for synapsis during prophase II and proper pairing during metaphase I.
2. An even number of chromosomes are required for synapsis during prophase II and proper pairing during metaphase II
3. An even number of chromosomes are required for synapsis during prophase I and proper pairing during metaphase
4. An even number of chromosomes are required for synapsis during prophase I and proper pairing during metaphase II
Answer:
3. An even number of chromosomes are required for synapsis during prophase I and proper pairing during metaphase
Explanation:
Mules are hybrids of a cross between a female horse and a male donkey. Horses contain 64 chromosomes while donkeys contain 63 chromosomes in their somatic cells respectively. This means that they each produce 32 and 31 chromosomes respectively during meiosis. A mule, hence, contains 32+31= 63 chromosomes in their somatic cells.
This chromosome number in mules are uneven for meiosis to occur because meiotic division requires that an even number of homologous chromosomes pair together in a process called SYNAPSIS during prophase I of meiosis I. This is impossible in a mule because of the uneven number of chromosomes in its cells.
Also, during metaphase of meiosis, the homologous chromosomes need to be properly aligned at the equator for separation to occur. This is also impossible in a mule considering the number of chromosomes that don't add up.
Due to this reason of unevenness in the number of chromosomes present in a mule, meiosis will not occur and if meiosis (gamete formation) does not occur, reproduction cannot take place. Therefore, the mule is a sterile species i.e. cannot produce offsprings via sexual reproduction.
The stethoscope should be placed on the chest wall over the breastbone at the level of seccond rib.
a. True
b. False
Answer:
The statement is true.
Explanation:
The stethoscope is an acoustic instrument that amplifies sounds, it is used by doctors to perform a test known as auscultation, either on the chest or the abdomen. The hood or membrane is placed on top of the patient's body. This bell captures and amplifies the vibrations that arise from the sounds of the organs. This is possible thanks to the shape of the bell (concave) and the thinness of the membrane (to be able to copy and amplify the sounds). According to different studies, the noises that are heard on the surface of the thoracic wall are generated in the greater bronchi, mainly lobar and segmental. Noises reaching the periphery are low-frequency, since the lung serves as a filter for high-frequency sounds. The stethoscope amplifies the sounds heard in the area where it is placed. The vibrations can be auscultated with the stethoscope resting on the thorax, the abnormalities correspond to the increase or decrease in the quality of hearing,for example the increased perception of the auscultated voice can be classified as Broncophonia.
(01.06]
Power can be defined as (1 point)
O the distance over which work was done
O how much work can be done in a given time
O all the work in a given area
the energy required to do work
Answer:
all the work in a given area
the energy required to do work
Explanation:
is the energy
what is an example of a way in which science has improved a societal problem?
Answer:
they created electronics
Explanation:
Which is the dependent variable in the following question?Is there a difference in the blood pressure of a group of men when given a blood pressure medicine vs. no medicine given?a)blood pressureb)blood pressure medicine c)men d)heigh
Answer:
The difference of blood pressure between each man.
Explanation:
Dependent Variables are always gonna be your data. So the data they are looking for here is the difference in blood pressure.
"The application of evolutionary theory to the debate over modern human origins focuses on which process of evolution?"
Answer:
The process of gene flow
Explanation:
Gene flow refers to the transference of genetic variation from one population to another. High rates of gene flow are known to modify the allele frequencies and reduce genetic differences among groups. Gene flow limits the process of speciation by combining gene pools form different groups. In humans, for example, it has been shown that migration in the past decreased genetic variation among their populations, thereby leading to the homogenization of genotype frequencies among geographic groups. It is for that reason that in population genetics the concept of 'human races' is now often recognized as erroneous and inadequate.
If every cell in the body gets the same DNA, how do the cells of an embryo make different structures and take on different roles
Answer: The options are not given, here are the options.
A. Different transcription factors are active in different cells
B. Different transcription factors are encoded in the DNA.
C. Genes are spliced differently in different cells.
D. Translation is regulated so that different cells may make more of certain proteins.
E. Some cells lack ribosomes while others use them.
F. cells delete a set of unused genes from their chromosomes.
The correct options are;
A. Different transcription factors are active in different cells
C. Genes are spliced differently in different cells.
D. Translation is regulated so that different cells may make more of certain proteins.
Explanation:
Every cell in the body have the same DNA but different function because a single cell in the body divides many times into several cells and these cells have the same DNA , DNA is the genetic information needed to make a person and it is stored in over 20,000 human genes found in almost all the cells in the body.
For the gene to be expressed into information, it must be made into protein and the protein goes out and perform some specific functions.
And for a cell to work, alot of proteins must be made to perform different functions.
Different transcription factors are active in different cells which make cells to perform different roles and functions.
Genes are spliced differently in different cells to make different proteins performing different task.
Suppose you scraped off some of the pale
green stuff from the tree bark. How would you know whether it was alive or
not? What observations would you note? What tests could you do to see
whether it's alive?
Lucy lab tech is to administer a glucose tolerance test on Mrs. Sweet. Mrs. Sweet is a fairly large lady weighing 330 pounds. The normal 8 oz. bottle of glucola used in the test is designed for patients with a weight range of 100-220 pounds. Patients weighting less that 90 or more than 250 pounds should be given a dosage of 2 ml/kg. How many ounces (oz) of glucola should Lucy give to Mrs. Sweet?
Answer:
10.12 oz
Explanation:
Since Mrs. Sweet weighs outside the 100-220 pounds, she will receive a dosage of 2 ml/kg. Her weight is 330 pounds.
1 pound = 0.453592 kg
330 pounds = 330 x 0.453592 = 149.685 kg
2 mL of glucola is required for 1 kg of weight. Hence 149.685 kg would require;
2 x 149.685 = 299.37 mL
1 oz. of glucola is equivalent to 29.5735 mL. Hence 299.37 mL would be equivalent to,
299.37/29.5735 = 10.12 oz. of glucola
Lucy should therefore give Mrs. Sweet 10.12 ounces of glucola.
⦁ Do most of the finches have beak depths near the lower extreme, the middle, or the higher extreme of the range?
Answer:
Near to the middle.
Explanation:
Most finches have beak depths close to the middle, which benefits the feeding and justifies the reason why most of these birds have this beak extension.
As you know, tendons are birds of the family of fringilids, they are known for having a very pleasant song, which allows people to wish to have them at home, as a pet.
They feed on grass seeds and insects. This type of food is benefited by the medium sized beak, allowing the tendons that have this type of beak to have survival advantages.
Answer:
Most of the finches have beak depths near the middle extreme of the range since the graph shows us that most of the finches (270) have a beak depth of 10mm, so we can infer most of them have a medium sized beak, which provides them many survival advantages.
Explanation:
what are the different ways of cooking
Explanation:
these are the different methods hope it helps you...
Why do new stars form from a hydrogen gas and dust clouds?
Be sure to discuss the role of gravity and fusion in your explanation. Include evidence to support your claim.
Answer:
New stars are able to form from hydrogen gas and dust clouds because the hydrogen gas and dust clouds allow for a new star's fuel.
Gravity allows for the hydrogen gas and dust clouds to condense into a star form. With more and more hydrogen gas and dust clouds combining, the pressure increases and the condensing becomes heavier and heavier. The pressure allows for fusion to start occurring.
Once hydrogen gas and dust clouds have finished condensing, the fusion will still be present. The fusion of hydrogen (fuel) into helium (product) allows to the star to emit light and heat.
Look at the picture below.
What does this picture represent?
A. Atoms that are ions
B. Atoms with a covalent bond
C. Atoms with no bond
D. Atoms with an ionic
bond
Explanation:
This is an atom with a covalent bond
This picture represent an atoms with a covalent bond.
Which atoms participate in the covalent bond?Covalent bonding is a type of chemical bond that occurs between hydrogen atoms, nonmetals and semimetals, in order to remain stable.
A covalent bond is one in which the atoms of chemical elements share their electrons in order to be stable. Covalent bonding is a type of chemical bond that occurs between hydrogen atoms, nonmetals and semimetals, in order to remain stable.
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If the changes are maintained as a result of stimulus, the effect is: a. Homeostasis b. Feedback response c. Negative feedback response d. Positive feedback response
Answer:
b. Feedback response
Explanation:
Homeostasis is the ability of the system to preserve a constant state despite external inputs. Homeostasis requires the constant monitoring of internal environmental conditions in order to keep the balance of the system. Conversely, a feedback response enables to maintain a change observed in the internal conditions of a given system (for example, a living organism). This change is regulated by the interaction among different elements in the system including effectors, sensors and stimuli, which work together to maintain the feedback state.
Which of the following is not a unique characteristic of a bird?
How do you know if a compound is organic?
Explanation:
organic compounds always contain carbon while inorganic compounds do not.
Which of the following is not true regarding dehydration synthesis?
1) It requires energy.
2) It results in the breakdown of large molecules into smaller mol
3) As chemical bonds are formed during this process, it results in
molecule of water.
4)
It uses small molecules needed for this process that result fror
of food.
5) It is also known as a condensation reaction.
Answer:
2) It results in the breakdown of large molecules into smaller molecules
Explanation:
A dehydration reaction or dehydration synthesis is a reaction that involves the loss of a water molecule as one of the products. As the name implies (de- remove, hydrate-water), water (H20) is released as chemical covalent bonds forms between the joining small molecules.
Small molecules called monomers are joined together to synthesize a much larger molecule called Polymer. Since it involves the joining or condensation of two small molecules, dehydration synthesis is also referred to as CONDENSATION reaction.
Dehydration synthesis builds up large molecules from small ones, hence, it is an endothermic process i.e. requires energy to occur. Hence, the untrue statement in the question is that dehydration synthesis results in the breakdown of large molecules into smaller molecules because it is the opposite (synthesis of large molecules from small ones).
It results in the breakdown of large molecules into smaller molecules is not
true regarding dehydration synthesis.
Dehydration synthesis is also known as a condensation reaction as it
involves the formation of a large molecule from two or more smaller
molecules through the formation of chemical bonds.
It requires energy and is characterized by the formation of water molecules
which makes option 2 the most appropriate choice.
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Which of these would be true concerning mitochondria and nerve cells?
Answer:
There are no options in the question but mitochondria is the power house of the cell while nerve cells transmit or send impulses or information from one place to another in the body.
Which is the property of matter in which a substance can transfer heat or electricity? magnetism conductivity density solubility
Answer:
Conductivity
Explanation:
:3
Conductivity is the property of matter in which a substance can transfer heat or electricity. So, the correct option is (B).
What is Conductivity?Conductivity is defined as the amount of heat passing per second through a slab of unit cross-sectional area when the temperature gradient between the two faces is one.
Conductivity is described as the property of matter in which matter can transfer heat or electricity or we can say that matter or substances that conduct electricity. The SI unit of conductivity is Siemens per meter.
Conductivity is of three types which are as follows:
1. Electrical conductivity
2. Thermal conductivity
3. Ionic conductivity
Any material can either be an insulator or a good conductor.
Thus, Conductivity is the property of matter in which a substance can transfer heat or electricity. So, the correct option is (B).
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How are the millions of organisms on earth classified by scientists
Answer:
The taxonometric way of classifying organisms is based on similarities between different organisms. ... Scientists looked at the characteristics (traits) that each organism had in common. They used the shared derived characteristics of organisms. Scientists were then able to find the common ancestry of the organisms.
Millions of the organisms are present on Earth and they are classified into categories by the division of them into the different kingdoms based on their characters and traits.
What is the number of kingdoms ?There are total 5 kingdoms in total given by R.H. Whittaker.
Kingdom monera is the first kingdom in which the single celled organisms are divided in and they are basically the first ones to invade the planet as well. These are single celled prokaryotic organisms which do not have well defined organelles.
Later on the prokaryotes along with the protists, kingdom plantae in which all the plants are included and the kingdom animalia in which all the animals are included in. Based on the sub categories they are later divided into the various categories such as mammals with the mammary glands are divided into phylum mammals.
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Scientists have a standardized definition of life. True False
Answer:
false
Explanation:
it's not possible to standardize the definition if life
It is actually the ____________ of molecules between chloroplasts and mitochondria that allows a ____________ of energy from the sun through all living things.
Answer:
It is actually the cycling of molecules between chloroplasts and mitochondria that allows a flow of energy from the sun through all living things.
Hope it helps.
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It is actually the transfer of molecules between chloroplasts and mitochondria that allows a flow of energy from the sun through all living things.
Chloroplasts and mitochondria are two organelles found in cells. Chloroplasts are found in plant cells, while mitochondria are found in all eukaryotic cells. Chloroplasts are responsible for photosynthesis, the process by which plants convert light energy into chemical energy. Mitochondria are responsible for cellular respiration, the process by which cells use chemical energy to produce ATP, the cell's energy currency.
The transfer of molecules between chloroplasts and mitochondria allows a flow of energy from the sun through all living things. In photosynthesis, chloroplasts use light energy to convert carbon dioxide and water into glucose and oxygen. Glucose is then used by cells as a source of energy, and the oxygen is released into the atmosphere. In cellular respiration, mitochondria use glucose and oxygen to produce ATP. ATP is then used by cells to power their activities.
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Water Balance between the Blood and the Intestinal Contents Normally, when a person eats food, the amount of solutes inside the bowel increases. What will happen to water balance between the blood and the bowel contents? What will happen to blood volume as this process occurs? Drag the appropriate labels and arrows into position.
Answer:
By increasing the amount of solutes in the intestine, these will increase in the bloodstream, that is, there will be a higher concentration of solutes in the volume.
To compensate for this phenomenon, the brain will coordinate, together with the tongue, the sensation of "dry mouth or thirsty mouth" in order to encourage the individual to consume water.
Once the individual takes the water, it is absorbed at the intestinal level and the general systemic volume increases, thus generating an increase in blood pressure, body hydration and a decrease in the concentration of solutes in the blood.
Explanation:
The renin angiotensin aldosterone system is a system that indirectly regulates the sensation of thirst and blood volume. This system connects the lung, with the cardiovascular system and the kidneys since they all work together.
When a person eats or eats a very salty food, or even drinks very sugary drinks or with salts and minerals, all this is absorbed, and this is how after ingestion thirst is triggered to compensate for the amount of solutes it has a rise in volume.