4.during the microscopic observation of a drop stagnant pond water, what criteria would you use to distinguish viable organisms from nonviable suspended debris?
Answers
During the microscopic observation of a drop stagnant pond water, one should check for movement of organisms, its morphology, size & shape, staining techniques, cell division to distinguish viable organisms from nonviable suspended debris.
During microscopic observation of a drop of stagnant pond water, distinguishing viable organisms from nonviable suspended debris can be achieved through several criteria:
1. Movement: Viable organisms usually exhibit some form of movement, such as swimming, crawling, or twitching. Nonviable debris typically remains stationary unless disturbed by water currents.
2. Morphology: Viable organisms display distinct structures, such as cell walls, membranes, organelles, or appendages like cilia or flagella. Nonviable debris may appear irregular, amorphous, or lack discernible features.
3. Size and shape: Viable organisms often have specific size ranges and shapes that can be identified using a reference guide or previous knowledge. Suspended debris varies in size and shape, which may help differentiate it from living organisms.
4. Staining: Some staining techniques can be used to distinguish living cells from nonviable debris. For example, a viability stain can be applied to the water sample, causing living cells to fluoresce or change color under the microscope, while nonviable debris remains unaffected.
5. Consistency: Viable organisms usually have a consistent appearance and texture, while nonviable debris may exhibit a wide variety of textures, including granular, fibrous, or filmy.
6. Reproduction: Observing cell division or reproduction in the sample can indicate the presence of viable organisms. Suspended debris does not reproduce.
Using these criteria, you can effectively differentiate viable organisms from nonviable suspended debris when observing a drop of stagnant pond water under the microscope.
For more such questions on Viable organisms.
https://brainly.com/question/4729605#
#SPJ11
Related Questions
How is the goal of evolutionary classification different from linnaean classification.
Answers
Answer:
The goal of evolutionary classification
Explanation:
The goal of evolutionary classification is to group species into larger categories that reflect lines of evolutionary descent, rather than overall similarities. The goal of linnaean classification is to group species into larger categories based on physical characteristics
Alfred Wegener's theory about Earth's past included a supercontinent made up of all the continents put together.
What was the name of the supercontinent?
Pangaea
Americas
Gondwanaland
Laurasia
Answers
Answer:
I do K12 and got it right its A. Pangaea.
Hope it helped, 0Drink0Milk0
Answer: d. Pangaea
Explanation:
What is the Law of Universal Gravitation and how did it differ from the understanding of the motion before Newton theorized it?
How do you think Newton’s discoveries help to pave the way for his Three Laws of
Motion?
Answers
Answer:
While Copernicus rightly observed that the planets revolve around the Sun, it was Kepler who correctly defined their orbits. At the age of 27, Kepler became the assistant of a wealthy astronomer, Tycho Brahe, who asked him to define the orbit of Mars. Brahe had collected a lifetime of astronomical observations, which, on his death, passed into Kepler’s hands. (Brahe, who had his own Earth-centered model of the Universe, withheld the bulk of his observations from Kepler at least in part because he did not want Kepler to use them to prove Copernican theory correct.) Using these observations, Kepler found that the orbits of the planets followed three laws.
Which event must occur before nucleotides can be added to a new DNA strand during DNA replication?
A .Hydrogen bonds must form between nitrogenous bases.
B .A strand of mRNA must be built from the template strand.
C .RNA primers must be added to the template strands.
D .An enzyme must check the template strand for errors.
Answers
Answer: C. RNA primers must be added to the template strands
Explanation:
none
While the neurology resident, Dr. Takahashi, was performing her examination, Sally asked her what a nerve was made of exactly. Which of the following statements is true regarding the cellular structure of a neuron? The neurology resident told Sally that axons of neurons make up the nerves that transfer information between the PNS and CNS. The neurology resident told Sally that the cell body, or some, made up the nerves and that this structure was what allowed the signal to travel between the CNS and PNS. The neurology resident told Sally that neurons and their dendrites, which send and reccive signals, made up the nerves and that the information was transported only from the PNS to the CNS. The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the CNS to the PNS.
Answers
The statement that is true regarding the cellular structure of a neuron is; The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the PNS to the CNS. Option A is correct.
This statement accurately describes the composition of nerves and the direction of information transmission. Neurons, which consist of a cell body, dendrites, and an axon, are the basic building blocks of the nervous system. Dendrites receive signals from other neurons, while the axon transmits signals to other neurons.
Nerves, on the other hand, are composed of bundled axons of neurons and are responsible for transmitting information between the peripheral nervous system (PNS) and the central nervous system (CNS). The information flow typically occurs from the PNS to the CNS.
Hence, A. is the correct option.
To know more about peripheral nervous system here
https://brainly.com/question/29355295
#SPJ4
--The given question is incomplete, the complete question is
"While the neurology resident, Dr. Takahashi, was performing her examination, Sally asked her what a nerve was made of exactly. Which of the following statements is true regarding the cellular structure of a neuron? A) The neurology resident told Sally that axons of neurons make up the nerves that transfer information between the PNS and CNS. B) The neurology resident told Sally that the cell body, or some, made up the nerves and that this structure was what allowed the signal to travel between the CNS and PNS. C) The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the PNS to the CNS. D) The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the CNS to the PNS."--
What structure regulates how much fluid in blood volume at any given time?
Answers
The kidneys regulate how much fluid is in blood volume at any given time.
The kidneys play a crucial role in maintaining fluid balance in the body by filtering and excreting excess fluid through urine. They do this by adjusting the amount of water and electrolytes that are reabsorbed into the bloodstream and the amount that is excreted in the urine.
The hormone aldosterone, which is produced by the adrenal gland, also plays a key role in regulating fluid balance by controlling the reabsorption of sodium and water in the kidneys.
To know more about kidneys , click here:-
https://brainly.com/question/30595654
#SPJ11
what is forestfire and how does it occour and what are its consequences
Answers
Answer:
tu pvta madre marika
Explanation:
iuhuihiuhuihyuhyu
which is not an example of inorganic fertilizer? A.nitrogen fertilizer B.phosphorus fertilizer C. Livestock waste
Answers
Answer:
Livestock waste
Explanation:
Fertilizers supplement the soil with macronutrients needed in large amounts: nitrogen, phosphorous and potassium. However, organic and inorganic fertilizers do so via different materials. Organic fertilizers contain only plant- or animal-based materials that are either a byproduct or end product of naturally occurring processes, such as manures, leaves, and compost.
Inorganic fertilizer, also referred to as synthetic fertilizer, is manufactured artificially and contains minerals or synthetic chemicals. For example, synthetic nitrogen fertilizers are typically made from petroleum or natural gas. Phosphorus, potassium and other trace elements in inorganic fertilizers are often mined from the earth. Balanced inorganic fertilizers, high in all three macronutrients, commonly include products like ammonium nitrate, ammonium sulfate, potassium chloride (potash), triple superphosphate, and magnesium sulfate (Epsom salts).
Answer:
Hey!
C. LIVE STOCK WASTE is your answer!
Explanation:
Waste from cattle/pigs/goats/hens and other animals in the farm all contain organisms which live in the waste...this is how the waste is decomposed and formed into natural fertilisers
THE REST DO NOT CONTAIN ANY ORGANIC MATTER...
HOPE THIS HELPS!!
How was heavy DNA distinguished from normal DNA by centrifugation in Meselson and Stahl experiment?
Answers
In the Meselson and Stahl experiment, heavy DNA was distinguished from normal DNA by centrifugation using a CsCl density gradient.
The Meselson and Stahl experiment involved labeling the heavy DNA with a heavy isotope of nitrogen, 15N, and the normal DNA with a lighter isotope, 14N. The DNA samples were then placed in a centrifuge tube with a CsCl solution, and subjected to centrifugation.
During centrifugation, the heavy DNA moved toward the bottom of the tube, while the normal DNA moved toward the top. This created a distinct band of heavy DNA at the bottom of the tube, and a distinct band of normal DNA at the top.
By comparing the positions of the two bands, the researchers were able to distinguish between the heavy and normal DNA and determine how DNA replication occurs in cells.
Learn more about DNA at https://brainly.com/question/16099437
#SPJ11
To which skeletal system do the carpals belong?
spongy skeleton
compact skeleton
axial skeleton
appendicular skeleton
Answers
Answer:
Appendicular skeleton
Explanation:
The carpals are bones that make up part of the hand, so the Appendicular system would be an appropriate answer. The Appendicular system got its name because it is the appendages of the axial skeleton. Your hand (as well as your arms , legs, pelvic girdle, feet,etc.) is considered your appendage so it would make sense for the bones that allow your wrist to move and rotate are considered it as well.
Answer:
appendicular skeleton
Explanation:
The carpals are bones that make up part of the hand.The appendicular skeleton is the portion of the skeleton of vertebrates consisting of the bones that support the appendages. The appendicular skeleton includes the skeletal elements within the limbs, as well as supporting shoulder girdle pectoral and pelvic girdle.
HOPE IT HELPS :)
PLEASE MARK IT TH BRAINLIEST!
What are the different types of vitamins needed by our body?
Answers
Answer:
The 13 essential vitamins your body needs are vitamins.
Explanation:
A, C, D, E, K and the B vitamins: thiamine (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyroxidine (B6), biotin (B7), folate (B9) and cobalamin (B12). The four fat-soluble vitamins—A, D, E, and K—are stored in the body's fatty tissues.
Please mark me as Brainliest
Answer:
acdebk
b1 ribovlavin
b2 niacin
b3 panthotenc
b5 pyroxidine
b6 biotine
b7 folate
b9 cobalamin
ADEK are stored in bodies fatt tissue and they're four fat soubl vitamins
Which of the following is an organic molecule?
A.NaCl
B.H2O
C.FeO
D.CH4
Answers
Answer:
D.CH4
Explanation:
Methane (CH4) is the prototypical organic molecule. Stick drawings of methane and some other organic molecules follow. Although uncommon, there are organic compounds that don't contain a C-H bond. For example, CCl4 is almost always classified as organic.
Which statement best describes how genes & inherited traits are related?
(a) some genes have no instruction for an inherited trait
(b) Individual genes carry the instruction for inherited traits.
(c) inherited traits carry the instructions for individual genes
(d) Some inherited traits are prevented by the instructions in a gene
Answers
Individual genes carry the instruction for inherited traits. Option B.
Relationship between genes and inherited traitsIn genetics, genes are considered the basic unit of hereditary responsible for the transfer of traits from parents to offspring.
In other words, genes are like programmed instructions for the expression of traits. Every expressed trait has a gene behind it.
Genes are located on chromosomes of DNAs.
The totality of the genes an organism possesses is known as the genome.
More on genes can be found here: https://brainly.com/question/8832859
#SPJ1
why do people share there own experiences even if no one ever cares?
Answers
Which of these describes a nucleic acid? A. an organic molecule B. a membrane C. rod-shaped
Answers
A nucleic acid is best described as A. an organic molecule.
Nucleic acids are macromolecules composed of nucleotide monomers, which are organic molecules. They are essential for storing, transmitting, and expressing genetic information in living organisms.
Nucleic acids, such as DNA (deoxyribonucleic acid) and RNA (ribonucleic acid), consist of long chains of nucleotide units. Each nucleotide is composed of a phosphate group, a sugar molecule (deoxyribose or ribose), and a nitrogenous base (adenine, guanine, cytosine, thymine in DNA, or uracil in RNA). These organic components make up the structure of nucleic acids.
The nucleic acid structure allows for the storage and transmission of genetic information through the arrangement and sequence of nucleotides. DNA carries the hereditary information that determines an organism's traits, while RNA plays a role in protein synthesis and other cellular processes.
While nucleic acids are involved in cellular membranes indirectly by regulating the synthesis of membrane proteins, they themselves are not membranes. Additionally, nucleic acids can adopt various structures, including a double helix in the case of DNA, but they are not specifically described as rod-shaped.
In summary, nucleic acids are organic molecules composed of nucleotide monomers. They play a fundamental role in storing and transmitting genetic information and are essential for the functioning of living organisms. Therefore, Option A is correct.
Know more about nucleic acid here:
https://brainly.com/question/1741761
#SPJ8
Crossing individuals with similar characteristics
so that those characteristics will appear in their
offspring is called
a. inbreeding
b.hybridization
c. recombination.
d. polyploidy.
Answers
Answer:
a. inbreeding
Explanation:
Breeding two closely related species will give offspring with similar characteristics as the parents.
Are the proteins of one specialized cell made in specialized cells of a different type?
Answers
Yes; The proteins of One specialized cell are made in specialized cells of a different type.
A cell that is specialised has particular features that enable it to perform its specific function in the body.
All cells begin as stem cells, which can differentiate into a wide variety of other cell types. To become specialised, they go through a process known as differentiation.
Diverse environmental factors influence how the cell makes proteins during differentiation.
Through gene regulation, individual genes can be activated or inactivated, which results in the production of unique proteins that give cells their structure and function.
Protein translocation: At this stage, protein synthesis is stopped, allowing fully produced proteins to be released into the cytoplasm. Then, in order for these proteins to act by a certain type of mechanism, they are directed to various places.
To know more about Protein synthesis refer to:
https://brainly.com/question/18800216
List the 3 Parts of the Modern Cell Theory.
Answers
Answer:
1. All living things are composed of cells.
2. Cells are the basic units of structure and function for living things.
3. All cells come from pre-existing cells.
Make a claim about which organism(s) use carbon dioxide and which organisms) produced carbon dioxide. How did your test conditions affect the cycling of matter between plants and animals?
Evidence: Describe specific observations from your experiment to support your claim.
Reasoning: Did your observations support your claim? Describe, in detail, the connections between the evidence you gave and the claim you are making
Answers
Answer:
an organism is like a plant
which sequence of bases and amino acids could be produced by transcription and translation of the dna molecule shown?
Answers
"UACUUUACGAAAGCGCCC and Tyr The Thr Lys Ala Pro" sequence of bases and amino acids could be produced by transcription and translation of the dna molecule shown.
What is amino acids?Amino acids are chemicals that make proteins when they combine. The building blocks of life are amino acids and proteins. Amino acids are left over after proteins are digested or broken down. The human body requires amino acids to produce proteins, which aid in digestion. The sequence of bases and amino acids "UACUUUACGAAAGCGCCC and Tyr The Thr Lys Ala Pro" might be created by transcription and translation of the dna molecule depicted. Amino acids are needed for the creation of body protein as well as other nitrogen-containing molecules including creatine, peptide hormones, and certain neurotransmitters. Although allowances are given in terms of protein, amino acids are the biological need.
Here,
The sequence of bases and amino acids "UACUUUACGAAAGCGCCC and Tyr The Thr Lys Ala Pro" might be created by transcription and translation of the dna molecule depicted.
To know more about amino acids,
https://brainly.com/question/14583479
#SPJ4
which element is considered the most versatile element in living organisms and why?hydrogen, because it provides most of the mass of human bodieshydrogen, because it can be found in both organic and inorganic moleculescarbon, because it can bond with many elements to form complex moleculescarbon, because it provides strength to the important protein, keratin
Answers
The most versatile element in living organisms is Carbon, because it can bond with many elements to form complex molecules.
Carbon is called a versatile element because it can create four covalent bonds, Carbon can bond with any element or atoms to form a compound by forming a single, double or triple bond.Carbon has 4 electrons in its outermost shell (L-shell) due to its electronic configuration 2,4.To reach the noble gas configuration to become stable, Carbon has to donate or accept four electrons from other elements. But it is not possible because of its small size.To counterattack, this problem Carbon forms a covalent bond by sharing its four electrons.
Learn more about carbon here:
https://brainly.com/question/13229518
#SPJ4
From 12 noon Thursday until 8 p.m. Thursday, the total amount of snowfall was 12 inches. Calculate the snowfall rate, in inches per hour.
Answers
Answer:
1 1/2 inch of snow per hour
Explanation:
You'd simply take the amount of time (8 hours) and divide it by the amount of snowfall (12 inches) to get the hourly rate.
From 12 p.m. on Thursday until 8 p.m. on Friday, the total amount of snowfall was 12 inches, and the rate of the snowfall per hour was 1.5 inches, as in the 8-hour total snowfall of 12 inches.
What are the reasons for the snowfall?There are generally different seasons on Earth, which occur due to the earth's revolution around the sun, causing the earth's temperature to vary in different geographical regions and snowfall to occur in colder areas where the sun's light is less. Snowfall is uncommon in equatorial regions, but in the polar regions it is observed because the temperature is generally low at that place and the animals that live there have different body types.
Hence, from 12 p.m. on Thursday until 8 p.m. on Friday, the total amount of snowfall was 12 inches, and the rate of the snowfall per hour was 1.5 inches, as in the 8-hour total snowfall of 12 inches.
Learn more about the snowfall here.
https://brainly.com/question/28294667
#SPJ2
The extensor muscles of the upper limb lie almost exclusively in the ______ region of thatlimb.A) posteriorB) anteriorC) medialD) lateral
Answers
So, the correct answer to your question is: A) Posterior
The extensor muscles of the upper limb are responsible for extending or straightening the limb. These muscles are primarily located in the posterior region of the limb.
The extensor muscles of the upper limb are responsible for extending the arm, wrist, and fingers. These muscles are located almost exclusively in the posterior region of the limb. The posterior region refers to the back of the upper limb, which is the side opposite to the palm. This region is sometimes referred to as the dorsal region. The extensor muscles originate from the humerus, the ulna, and the radius bones of the arm and forearm. They then insert onto various points on the hand, wrist, and fingers.
The extensor muscles of the upper limb are important for performing activities such as lifting weights, throwing a ball, and typing on a keyboard. They work in opposition to the flexor muscles, which are located in the anterior region of the upper limb. The flexor muscles are responsible for flexing the arm, wrist, and fingers. Together, the extensor and flexor muscles of the upper limb allow for a wide range of movements and activities.
In summary, the extensor muscles of the upper limb lie almost exclusively in the posterior region of that limb, which is the side opposite to the palm. These muscles play a vital role in performing a wide range of activities and movements, and work in opposition to the flexor muscles located in the anterior region of the upper limb.
Know more about extensor muscles
https://brainly.com/question/9288966
#SPJ11
Will selection eliminate a harmful recessive allele from a population as quickly as it will remove a harmful dominant allele? Why or why not?
Answers
Answer:
no
Explanation:
you can see dominant traits on every organism that can have them, meanwhile you can have carriers for recessive traits, so there can be hidden traits, thus it will take
what is the advantage of plasmolysis to the terrestrial plants?
Answers
Answer:
plasmolysis make the plants floopy, when water passes out through osmosis the plant become limb
The cell can be restored quickly to its normal turgid condition simply by returning it to a dilute medium or water.
However, plasmolysis prevents normal water balance and other functions of the plant as a whole, and thus plants cannot tolerate prolonged exposure to medium more concentrated than their own cells.
What causes a shift of the oxyhemoglobin curve to the left? (Select all that apply.)
a.) Increased pH
b.) Chronic disease
c.) Decreased H+ ions
d.) Decreased temperature
e.) Increased in 2,3-DPG
Answers
a,c and d are right options, A shift of the oxyhemoglobin curve to the left means that hemoglobin has a higher affinity for oxygen,
meaning it can bind to oxygen more easily. This shift is caused by factors that increase the pH or decrease the concentration of H+ ions, which makes the hemoglobin molecule less likely to release oxygen
Decreased temperature also shifts the curve to the left by reducing the rate at which oxygen is released from hemoglobin. However, chronic disease and increased levels of 2,3-DPG (an organic molecule that regulates the oxygen affinity of hemoglobin)
can shift the curve to the right, making it more difficult for hemoglobin to bind to oxygen. The factors that cause a shift of the oxyhemoglobin curve to the left are:
a) Increased pH
c) Decreased H+ ions
d) Decreased temperature
These conditions promote increased binding affinity between oxygen and hemoglobin, resulting in the leftward shift of the oxyhemoglobin curve.
Learn more about oxygen click here
brainly.com/question/13370320
#SPJ11
What causes a shift of the oxyhemoglobin curve to the left?
a.) Increased pH
b.) Chronic disease
c.) Decreased H+ ions
d.) Decreased temperature
e.) Increased in 2,3-DPG
Why is oxygen NOT considered a characteristic of life?
Answers
Answer:
Oxygen is something you breath, breathing is considered a characteristic because its a daily part of you're life.
Explanation:
Do you think that genetics is the only force behind appearance and behavior? If not, what else impacts human development? How large a part does genetics play in who you are?
Answers
Answer:
Genetics play a part in who you are by creating the way you look, or what your appearence looks. Behavior can be a different thing, some types of common behaviors or sicknesses do show up, but the way you act most of the time is your choice, not your genetics. Sometimes your genes can limit you to some things but if there is a certain way you want to behave, thats on you.
Explanation:
Below are some events that take place during cell division? Which would be the correct order?
I. Chromosomes line up at the equatorial plane
II. Chromosomes condense, becoming shorter and thicker
III. Chromosomes have long and nuclear membrane forms around them
IV. Centromeres divide and the chromosomes move to the opposite poles
a. 2-1-4-3
b. 3-4-1-2
c. 1-3-2-4
d. 4-1-2-3
Answers
The correct order of events during cell division is: 3-4-1-2, the correct option is b.
During cell division, several key events occur in a specific order.
Chromosomes have long and nuclear membrane forms around them: Before cell division occurs, the chromosomes within the nucleus start to undergo changes. Centromeres divide and the chromosomes move to the opposite poles: At this stage, the centromeres, which hold the sister chromatids together, divide. Chromosomes line up at the equatorial plane: Once the chromosomes have reached the opposite poles of the cell, they align themselves along the equatorial plane or the metaphase plate. Chromosomes condense, becoming shorter and thicker: In this step, the chromosomes further condense, becoming even shorter and thicker.Thus, the correct order, b. 3-4-1-2, accurately represents the sequence of events during cell division.
For more details regarding cell division, visit:
https://brainly.com/question/29773280
#SPJ1
How long does a mayfly live as an adult? *
Answers
Answer:
Adults will live only a day or so, but the aquatic larvae lives for about a year
Explanation:
Answer:
~ 1 day but larvae can live longer
Explanation: