Answer:
Polymerase Chain Reaction (PCR) technique
Explanation:
The Polymerase Chain Reaction (PCR) technique was developed by Kary Mullis in 1984. This technique exploits the ability of the DNA polymerase to amplify a specific DNA sequence (template), which is then observed as a band by traditional electrophoresis. Since PCR is highly specific and sensitive, it has enabled the detection of genetic variation among different DNA samples, and thereby this technique can be used to identify new species. One of the molecular markers most widely used to identify new species is the Citochormoe Oxidase I (COI) gene, which is amplified by PCR in order to detect genetic variation useful to classify species.
4 How is the DNA described and what does this mean?
Answer:
Deoxyribonucleic acid (DNA) is a molecule that contains the biological instructions that make each species unique. DNA, along with the instructions it contains, is passed from adult organisms to their offspring during reproduction
Explanation:
I NEED HELP PLS!!!! All organisms need a place to live that provides protection, sunlight, and water. sunlight, food, and water. food, water, and protection. protection, food, and sunlight.
What did B. F. Skinner believe drove one's behaviors? (Site 1)
B. F. Skinner believed that one's behavior was driven by external stimuli and people are controlled by their environment.
What is Behavior?This is defined as the manner in which an individual acts and Skinner believed that it was driven by external stimuli.
He was also of the notion that people were controlled by their environment and not by themselves.
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Which of the following hormone and cardiovascular effect is NOT correctly matched?
A) Atrial natriuretic homone -- lowers blood pressure
B) Antidiuretic hormone -- raises blood pressure
C) Aldosterone -- lowers blood pressure
D) Epinephrine -- raises blood pressure
Answer:
your answer is C. Aldosterone
Explanation:
it actually raises blood pressure.
Aldosterone also causes water to be reabsorbed along with sodium; this increases blood volume and therefore blood pressure.
Answer: Aldosterone -- lowers blood pressure
Explanation:
Which urine characteristics are indicative of acute tubular necrosis (ATN) caused by intrinsic (intrarenal) failure?
A. Urine sodium >30 mEq/L.
B. Urine osmolality >500 mOsm.
C. Fractional excretion of sodium (FENa).
Answer: A. Urine sodium >30 mEq/L.
Explanation:
Acute tubular necrosis (ATN) is a medical condition that involves the necrosis -death- of the tubular cells that form the renal tubule, which carries urine to the ureters while reabsorbing 99% of water and concentrates the salts and by-products of metabolism for disposal. So it is a kidney disorder that involves damage to cells in the tubules of the kidneys, which can lead to acute kidney failure. Tubules are small tubes in the kidneys that help filter blood as it passes through them. ATN is often caused by a lack of blood flow and oxygen to the kidney tissues (kidney ischemia). It can also occur if kidney cells are damaged by a poison or harmful substance.
ATN occurs with acute renal failure (ARF) and is one of the most common causes of ARF. The presence of "dark brown bodies" of epithelial cells found in the urine during urinalysis is pathognomonic for ATN.
Risks for ATN include:
Low blood pressure (hypotension) lasting more than 30 minutesInjury or trauma resulting in muscle damageRecent major surgeryReaction to blood transfusionSeptic shock (a serious condition that occurs when a whole-body infection leads to dangerously low blood pressure)Since acute tubular necrosis is classified as a kidney cause of acute kidney failure, the diagnosis is made by a sodium excretion fraction greater than 3% and the presence of granular casts formed by Tamm-Horsfall protein with epithelial cell fragments on general urine examination. So, as it eas explained before, it concentrates the salts and by-products of metabolism thereby it is characterizad by urine sodium levels greater than 30 mEq/L.
The meq is a unit used in biology to represent the ionic concentration of a solution. The expression in milliequivalents of a known ionic concentration by weight is obtained by dividing the number of milligrams per liter by the atomic weight of the ion and multiplying the result by the valency of that ion.
Which cells of the skin are filled with a tough, fibrous protein and account for most of the epidermal cells of the skin?
Answer:
Keratinocyte
Explanation:
Keratinocytes are primarily found in epidermis and its made up of 90% epidermal skin in man.
keratinocytes forms barrier that prevent us against environmental damage by heat, ultraviolet radiation, water loss from the skin, invasion of pathogenic bacteria, fungi, parasites, and viruses.
Keratinization is a form of the physical barrier formation where more keratinocytes is produced under terminal differentiation.
Passive transport is the movement of materials across the cell membrane without the use of:
Oxygen
O water
energy
O DNA
Passive transport is the movement of materials through the cell membrane without the use of energy.
Dr. Malani Mackey, works for a pharmaceutical company developing a drug for treating skin cancer. This particular drug requires her to make a mixture of L-histidine, polysorbate 80, and sucrose that must heated and swirled to mix. Which of the following types of glassware will she used for making this mixture? Justify your answer.
Answer:
This question lacks options, the options are:
A) 100 ml Beaker
B) 250 ml Erlenmeyer Flask
C) 250 ml Graduated Cylinder
The answer is B). 250 ml Erlenmeyer Flask
Explanation:
Several types of glasswares are used in chemical laboratories for performing processes like mixing, heating and stirring of chemicals. In this question, Dr. Malani Mackey who works for a pharmaceutical company is trying to develop a cancer drug by making a mixture of L-histidine, polysorbate 80, and sucrose. This mixture is required to be heated and stirred (shaked) during the mixing. Hence, a glassware adapted for this purpose must be used.
- Erlenmeyer Flask, also known as Conical flask is a laboratory flask named after its conical base/bottom. This glassware is used to mix and even heat chemicals in the laboratory. Due to its cone-shaped body coupled with a long cylindrical neck, the contents in the Erlenmeyer Flask can be shaked or stirred without spilling them. This property gives the ERLENMEYER flask an edge over the BEAKER (has a large open mouth) when used for stirring purposes.
The Graduated cylinder is best suited for making precise measurements of liquid chemicals, hence, it is not an appropriate glassware for heating and stirring.
which type of molecule attaches itself to a ribosome, where it serves as a pattern for protein biosynthesis g
Answer:
polyribosome
Ribosomes are the sites in a cell in which protein synthesis takes place. Cells have many ribosomes, and the exact number depends on how active a particular cell is in synthesizing proteins.
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Explain how the various domains of the fibronectin molecule or the laminin molecule are important for their function
Answer:
The important role of the functions of various domains of the fibronectin molecule or the laminin molecule are-
Fibronectin
-It can bind to fibrin which is important in blood clotting, and fibronectin can attach to heparin sulfate proteoglycans or collagen for binding it to the Extra Cellular Matrix.
-The RDG-containing cell-binding domain of fibronectin is very important for permitting cells to bind to this molecule, due to the fact that it is site that is attach by integrins on the surface of the cell.
Laminin
-A collagen IV binding site permits it to bind to the basal laminae (the molecule is predominantly found at this site).
-_6_1 integrins specific integral-binding site
Both Fibronectin and Laminin
-allow to attach to other ECM proteins.
Which is a function of a protein macromolecule
A. Provides quick energy
B. Insulates organisms
against the cold
C. Moves things in and out of cells
D. Makes cells waterproof
Answer: c
Explanation:
Function of protein macromolecule is to move things in and out of the cells.
What are proteins?
Protein is found throughout the body in muscle, bone, skin, hair, and virtually every other body part or tissue. It makes up the enzymes that power many chemical reactions and the hemoglobin which carries oxygen in your blood. At least 10,000 different proteins make up the human being.
Protein is made from twenty-plus basic building blocks called amino acids. Because body does not store amino acids, our bodies make them in two different ways: either from scratch, or by modifying others. Nine amino acids—histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine are known as the essential amino acids, and must come from food.
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List Five factors that cause climate change?
Answer:
Explanation:
Here are some of the many factors that can cause the Earth's climate to get hotter or colder:
Strength of the sun. ...
Changes in the Earth's orbit. ...
Changes in the orientation of the Earth's axis of rotation. ...
Quantity of greenhouse gases in the atmosphere. ...
Carbon dioxide content of the oceans.
Answer:Strength of the sun. ...
Changes in the Earth's orbit. ...
Changes in the orientation of the Earth's axis of rotation. ...
Quantity of greenhouse gases in the atmosphere. ...
Carbon dioxide content of the oceans
Jameela owns a small shop and has applied for a personal loan from a local bank. The bank has asked for her current and past financial
statements as part of her loan application. How will the statement help the bank determine Jameela's loan eligibility?
A.
It will help the bank determine the amount of interest to be charged on the loan.
B.
It will determine Cynthia's credit score or ranking.
C.
It will determine whether Cynthia will want to sell her shop.
OD
It will determine the amount of loan it can approve.
Answer:
I think the answer should be the option A , hope this will help you !
A friend tosses a ball to you. Which action does your body take first to catch
the ball?
O A. Your eyes signal your brain that a ball is approaching.
O B. Nerves signal the muscles in your arms to relax.
O C. Your brain sends a signal to the spinal cord.
O D. Muscles in your arms cause your arms to grab the ball.
Answer:
The answer is A) Your eyes signal your brain that a ball is approaching.
The action where the body take first to catch the ball is option A. Your eyes signal your brain that a ball is approaching.
Role of brain sending message?At the time when the friend tossed the ball to you so here eyes signal the brain for the approached ball.
The special call that we called as the neuron is to be responsible for carrying out these message.
hence, the first option is correct.
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if you were in charge of an effort to help reduce eutrohication and the soread of dead zones in the gulf of Mexico, whichof the following policies would you not make a priority for the midwestern region of t hff e country?
Hypoxic waters kill high levels of aquatic species, disrupting the food chain and habitat. In addition to wrecking ecological havoc, the dead zone can be a financial drain on coastal communities.
Primate communication can be compared to human communication in that:________.
a. primate communication is very simple and across all the species consists of only a handful of "meaningful" sounds; this is entirely different from human language.
b. although some primates have the ability to transmit meaning from one individual to another, this always happens within a species, never between species; this is similar to humans, since humans do not really understand other animals either.
c. many primates make sounds that seem to be labels for things, like specific food items or specific predators, but primate communication lacks nuance or complexity of any kind; this is unlike human language.
d. for at least some Old World monkeys and apes, communication seems to be very context dependent, and specific sounds can have different meanings by making small changes; this is like human language.
Answer:
Although some primates have the ability to convey meaning from one individual to another, this always occurs within a species, never between species; this is similar to humans in that humans don't really understand other animals either.
Explanation:
What is written above is correct, since humans and primates can communicate in a rustic or not very expressive way with other animals, but understanding or assuming the intentions between different species.
It has been proven that in addition to the ape, chimpanzee and other species of primates, the dolphin is an animal that uses its own language and has a slight percentage of intelligence.
are sources of groundwater. (Check all that apply) Aquifers Underground streams humidity Ice caps
Aquifers, Underground streams
1.Are there any cures or medication to relieve the effect of the Alzheimer’S disease? If so, what are they
2. Is there any research current under way to treat or cure Alzheimer’s disease? If so, describe the research
Answer:
1. While there is no cure for Alzheimer's, there are medications to help temporarily improve symptoms.
2. The most recent research is/was the research on the drug sargramostim, (AKA Leukine), It's thought that the drug may stimulate the immune system to protect the brain from harmful proteins.
hope this helps :)
Which statement correctly describes glucose (C6 H12 O6)?
what is the function of cerebram and cerebellum
Answer:
[tex] \boxed{ \bold{ \sf{see \: below}}}[/tex]
Explanation:
Brain is divided into 3 main parts : Cerebrum , Cerebellum and Medula oblongata.
The major functions of the cerebrum are as follows :
Cerebrum is the centre of intelligence , memory , imagination and emotions.Cerebrum is responsible for ordinary sensations like touch , pain , heat and cold and special sensations like sight , hearing , smell etc.Cerebrum controls the functions of other parts of the brain.It also helps to conduct different types of motor actions of muscles.The major functions of the cerebellum are as follows :
It maintains equilibrium and controls the position of the body.It makes body movements smooth , steady and co-ordinated.It also regulates and co-ordinates contraction of skeletal muscles.Hope I helped!
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A protein contains four disulfide bonds. In order to break these bonds researchers added a minimum of:
Answer:
A.2 moles of NADH for each mole of protein
B.4 moles of NADH for each mole of protein
C.2 moles of NAD+ for each mole of protein
D:4 moles of NAD+ for each mole of protein
The answer is B
Explanation:
A store sells a variety of sets for building molecular models. The sets are described by the diagram below. Each circled letter represents a box of 6 model atoms of one element. For example, the circled letter "P" represents a box with 6 model phosphorous atoms.
Set 1 has 12 carbon, 12 oxygen, and 18 hydrogen atoms. Set 2 has 12 carbon, 12 oxygen, and 24 hydrogen atoms. Set 3 has 6 carbon, 12 oxygen, 12 hydrogen, 6 nitrogen, and 6 phosphorous atoms. Set 4 has 6 carbon, 6 oxygen, 6 hydrogen, and 6 phosphorous atoms.
Kendra wishes to build a model of a carbohydrate molecule, ideally containing as many monomers as possible. Which set should she choose?
A. Set 1
B. Set 2
C. Set 3
D. Set 4
Answer:
B. Set 2
Explanation:
Carbohydrate is one of the four biological molecules in living systems (others are proteins, lipids and nucleic acid). The carbohydrate molecule consists of a long chain of carbon, hydrogen and oxygen elements in a ratio 1:2:1. Hence, the simplest unit of a carbohydrate has an empirical formula of (CH2O)n where n is the number of chains.
According to the question, a store sells a variety of sets for building molecular models and Kendra wishes to build a model of a carbohydrate molecule. Since carbohydrate monomers have a CH2O formula, Kendra needs a set in which the ratio of carbon: hydrogen: oxygen is 1:2:1. SET 2 fits this description by containing 12 carbon, 12 oxygen, and 24 hydrogen atoms
That is, carbon (12/12) : hydrogen (24/12) : oxygen (12/12), which is 1:2:1. Therefore, SET 2 is the best choice for Kendra in order to build her model of carbohydrate molecule containing as many monomers as possible.
Using technology in the field of agriculture which has enabled farmers to feed a growing human population is an example of a beneficial use of technology.
Answer:
This statement is true
Explanation:
Technologies associated with agriculture systems have greatly enhanced crop yields around the world. An example of this is the "Green revolution" in 1950-1960, where the combination of genetic improvement methodologies with the use of fertilizers was critical for the amazing increase in crop yields, particularly in new varieties of rice and wheat. Indeed, the agronomist who developed some of these high yielding varieties of wheat, Norman Borlaug, was awarded the Nobel Peace Prize for his contribution to the extensive increase in crop production, thereby helping to alleviate world hunger.
What kind of survivorship curve would result if a group of organisms is producing few offspring but providing good care so their likelihood of survival is high
The type of survivorship curve that would result if a group of organisms is producing few offspring but providing good care so their likelihood of survival is high is type 1.
What is survivorship curve?Graphs depicting the percentage of a population that lives from one age to the next are called survival curves. These graphs show the mortality of a collection of organisms according to their age.
Ecologists generally gather age-specific survival rates for organisms within a cohort in order to produce survivorship curves.
The early and middle years of life have a high age-specific survival probability, whereas the later years of life see a significant drop in survival.
They are typical of species like humans and many other large mammals, who have few young but take good care of them.
Organisms with type I survivorship frequently have few young and give them good care, which increases the chances of their survival. Almost all mammals, including people, display a type I survivorship curve.
Thus, the kind of given survivorship curve is type 1.
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Use the pH chart to determine the possible
contents of each test tube shown below.
Acidic
pH
paper
рн
paper
pH
paper
EXAMPLES
Battery acid
Sulfuric acid
Lemon juice, vinegar
Orange juice, soda
Tomatoes
Meat, clean rain
Healthy lake, milk
Pure water
Sea water, eggs
Olive oil
Milk of magnesia
Ammonia
Soapy water
Bleach
Liquid drain cleaner
pH = 0
pH = 1
pH = 2
pH = 3
pH = 4
pH = 5
pH = 6
pH = 7
pH = 8
pH = 9
pH = 10
pH = 11
pH = 12
pH = 13
pH = 14
Neutral
Answer :
The possible contents in 1st test tube are meat and clean rain.
The possible content in 2nd test tube is olive oil.
The possible contents in 3rd test tube is tomatoes.
Explanation:
pH : It is defined as the negative logarithm of hydrogen ion concentration.
The main use of pH paper is to determine is a solution is acidic, basic or neutral.
The range of pH paper is 1 o 14 with different color.
If the solution is acidic then the value of pH is less than 7.
If the solution is basic then the value of pH is more than 7.
If the solution is neutral then the value of pH is equal to 7.
According to the question,
The possible contents in 1st test tube are meat and clean rain.
The possible content in 2nd test tube is olive oil.
The possible contents in 3rd test tube is tomatoes.
Answer:
Yellow pH paper: meat, green pH paper: olive oil, and the orange pH paper: tomatoes
Explanation:
Which morphological difference is associated with C4 plants but not C3 plants?
A. Stomata in the lower epidermis
B. Spongy mesophyll cells
C. Xylem
D. A waxy coating of the bundle sheath
Answer:
Explanation:Answer:
D. A waxy coating of the bundle sheath
Explanation:
C3 plants are plant that make use of Calvin cycle for synthesising their food while C4 plants makes use of Calvin cycle along side a 4 carbon compound that help store carbondioxide.
The C4 plant is unique because it has both mesophyll cell and bundle sheath unlike C3 plant that has only the mesophyll cell. The bundle sheath is where the 4 carbon compound that ferried carbondioxide is first stored before in form of oxaloacetate before broken down cell into pyruvate and carbondioxide and now proceed into the Calvin cycle for the formation of sugar in the bundle sheat.
The bundle sheat and mesophyll cell help separate when carbondioxide is ferried in and when it is used up for sugar formation in C4 plants.
The movement of water across the cell membrane is called:
diffusion
endocytosis
exocytosis
osmosis
Answer:
osmosis .....
Answer:
osmosis
Explanation:
movement of a solvent (such as water) through a semipermeable membrane (as of a living cell) into a solution of higher solute concentration that tends to equalize the concentrations of solute on the two sides of the membrane.
Another name for forehead
Answer:
temple is another name for forehead
Explanation:
\ would you be injured if you pulled a muscle in your axillary region, cracked a bone in your occipital region, or cut a digit?
Answer:
yes you will be injured.
Explanation:
Which statement best describes the movement of carbon dioxide into or out
of a plant during photosynthesis?
The correct answer is C. It is taken in from the air
Explanation:
Carbon dioxide is a gas that exists mainly in the air or atmosphere. Additionally, this chemical compound is required for plants as part of photosynthesis (process to produce energy). In this process, plants take dioxide from the air through the leaves' stomata, which are small spores, use this along with sunlight and water to produce energy, and later release oxygen. According to this, carbon dioxide is taken from the air by plants (option C) while oxygen is given off.
Answer:
c
Explanation:
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