Answer:
Of the four main groups of organic molecules, Lipids are the most resistant to decay. They are also highly insoluble in water. All cells produce this type of organic compound to be used in their membranes and in energy storage. These type of organic molecules are found in kerogens
What are the advantages and disadvantages of the serial dilution-agar plate procedure?
Answer:
Advantages
- Serial dilution is used in microbiology to estimate the concentration or number of cells/organisms in a sample to obtain an incubated plate with an easily countable number of colonies.
- In biochemistry, serial dilution is used to obtain the desired concentration of reagents and chemicals from a higher concentration.
- In pharmaceutical laboratories, serial dilution is performed to receive the necessary concentration of chemicals and compounds as this method is more effective than individual dilutions.
- In homeopathy, homeopathic dilutions are used where a substance is diluted in distilled water or alcohol. It is believed than dilution increases the potency of the diluted substance by activating its vital energy.
Disadvantages
- An error might occur during the propagation of the sample, and the transfer inaccuracies lead to less accurate and less precise transfer. This results in the highest dilution to have the most inaccuracies and the least accuracy.
- Because serial dilution is performed in a stepwise manner, it requires a more extended period of time which limits the efficiency of the method.
- Serial dilution only allows the reduction of bacteria/cells but not the separation of bacteria/cells like in other techniques like flow cytometry.
- This technique also requires highly trained microbiologists and experts in aseptic techniques.
What is homeostasis?
[tex]\huge\text{Hey there!}[/tex]
[tex]\large\text{What is \underline{Homeostasis}?}[/tex]
[tex]\large\text{Homeostasis is the self-processing in the biotic structured which}\\\large\text{tended to perpetuate (maintain) rationally while it is modified}\\\large\text{its conditions that can be prototypical for surviving}[/tex]
[tex]\large\text{Homeostasis has.... }\\\bullet\large\text{ Controllable center(s)}\\\bullet\large\text{ Effectors}\\\bullet\large\text{Variables (aka Homeostasis)}\\\bullet\large\text{ Receptors}[/tex]
[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
[tex]\large\text{Here is what each of your features of homeostasis means}\downarrow[/tex]
12. Identify the stage of mitosis shown here. Describe
the events that occur in this stage.
Spindle
JUST QUESTION 12 please
The chromatids are arranged at the center, with a joined spindle at the metaphase of mitosis.
Mitosis is the type of cell division in which the parent cell divides into two daughter cells.
What are the phases of Mitosis?The mitosis is divided into four phases, namely,
ProphaseMetaphaseAnaphaseTelophaseThe arrangement of the duplicated chromatids at the center plate with the binding with spindle fiber is represented in the metaphase of the mitosis cycle.
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what does transportation help in ascent of sap?
Evaporation of water molecules from the cells of a leaf creates a suction which pulls from the xylem cells of the roots.Thus,the transpiration helps in the absorption and upward movement of water and minerals dissolved in it from roots to leaves in the help of ascent of sap .
may this was ur answer
describe how you would test a sample of powdered milk to see if it contained protein
Answer:
How would you contained protein
Explanation:
One would test a sample of powdered milk to see if it contained protein by using copper sulfate solution and sodium hydroxide solution.
What is protein?A structure composed of amino acids. The body need proteins to function properly. They serve as the building blocks for several bodily components, including the skin, hair, and enzymes, cytokines, and antibodies.
An essential component of a balanced diet is protein. Amino acids are the chemical "building blocks" that make up proteins.
Amino acids are used by your body to create hormones, enzymes, and to build and repair muscles and bones. They can be utilized as a source of energy as well.
The test can be done as:
To your meal solution, add a few drops of copper sulfate solution. A few drops of sodium hydroxide solution should be added. Protein is present in the food if the solution becomes purple.Thus, using copper sulfate solution and sodium hydroxide test, one can determine the protein content in the sample.
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What would the complementary strand of GTCCGTAACGTAT be?
Answer:
CAGGCATTGCATA
Explanation:
Given: GTCCGTAACGTAT
Under Chargaff's rule, Adentine is equal to Thymine, and Cytosine is equal to Guanine. (A=T, C=G)
PLEASE I BEG YOUUUU HELP
Answer:
C
Explanation:
B. Population Dynamics Symbiotic Relationships
Ticks
Ticks belong to a family called Acarina, which also contains mites. Ticks eat by taking blood from
other organisms such as wallabies, lizards, echidnas and occasionally humans. In humans this can
lead to symptoms such as itching, head aches and in extreme cases flu like symptoms, facial
paralysis, and meat allergy.
1. Identify the relationship a tick has with its host. Justify your answer [3]
Answer:
Parasitism
Explanation:
Parasitism is a form of relationship in which one of the organism is being harmed while the other benefits. The organism being harmed is usually called the HOST while the organism that benefits is called PARASITE. Parasites often inflict certain health-related conditions on their hosts.
According to this question describing the mode of feeding of ticks, they are said to eat by taking blood from other organisms such as wallabies, lizards, echidnas and occasionally humans, which are all HOSTS.
In human hosts, this relationship with ticks can lead to symptoms such as itching, head aches and in extreme cases flu like symptoms, facial paralysis, and meat allergy etc. From the description above, it is clear that TICK has a PARASITIC RELATIONSHIP with its host as it brings only harm to them and benefits itself.
An igneous rock has a coarse texture and is dark in color. How else can this rock be accurately described?
small crystals
cooled quickly
produced from magma
formed at Earth’s surface
Answer:
C. produced from magma.
D. formed at Earth’s surface
Explanation:
Earth crust refers to the outermost layer or thin shell which makes up the earth such as sedimentary, metamorphic and igneous rocks.
The Earth crust is typically made up of two (2) main types;
1. Oceanic crust: this crust has a thickness ranging from 5 km to 10 km and comprises of denser rocks such as diabase, gabbro and basalt.
2. Continental crust: this crust has a thickness ranging from 30 km to 60 km and comprises of minerals such as quartz, silicate, feldspar, aluminum and less dense rocks such as granite
An igneous rock has a coarse texture and is dark in color. Also, an igneous rock can be accurately described as being produced from magma and formed at Earth’s surface.
Answer:
Produced from magma
Explanation:
I got it right on the test hope this helps
☺️
Which characteristic of life best describes the process of homeostasis?
responding to the environment
reproducing
growing and developing
using energy
Answer
A. responding to the environment
Answer:
and using energy
Explanation:
the guy on ed told me
An earthquake with a Richter magnitude of 5 releases ______ more energy than an earthquake with a Richter magnitude of 3.
a. 900
b. 27000
c. 30
d. 2
Answer:
b
Explanation:
Which enzyme functions to prevent supercoiling of the DNA molecule during replication?
A)
Helicase
B)
Topoisomerase
C)
RNA polymerase
D)
DNA polymerase
Answer:
B
Explanation:
Check Check Match the function to the correct part of the cell. DNA controls the activities of the cell nucleus supports and protects the organelles in the cell cytoplasm contains instructions on how a cell functions
Answer:
DNA- contains instructions on how a cell functions
Nucleus- controls the activity of the cell
Cytoplasm- supports and protects the organelles in the cell.
Explanation:
Hope it helps you. Please mark as the brainliest. Thanks.
Answer:The answers are right js did on edge Thanks !!!
Explanation:
what is a example of acceleration?
Answer:
For example, if a car turns a corner at a constant speed, it is accelerating because its direction is changing. The quicker you turn, the greater the acceleration. So there is an acceleration when velocity changes either in magnitude or in direction, or both.
Explanation:
hope this helps... (i can't see the pic...)
(─‿─)
discuss the characteristics of phylum mollusca
Answer:
The body is soft and unsegmented. Body is divisible into three regions – head, a visceral mass, and ventral foot. Body is covered by a mantle and shell. They can be found in different habitats, both aquatic and terrestrial.
Offer a possible explanation why even identical twins are not exactly alike.
Answer:
Because identical twins are an example of sexual reproduction, which provides different looking offspring
Explanation:
Organisms that are birthed of asexual reproduction are always exactly identical
Wrong answers only!!! What is the main source of surface water turning into underground water?
Answer:
Birds + planes = chicken
Explanation:
If you divide the air density by the amount of dirt on the sun, you get three roasted turkeys and a new haircut.
Answer:
Hey you forgot the part were you stuff the candle with cotton and then square the amount of laptops you have then divide by the amount of iphones produced by the worms that eat batteries to get the answer chicken AND 3 marked white vans but the catch is there are not white they are actually red
Explanation:
Which resource is nonrenewable? A. Wind B. Trees C. Coal D. Soybeans
Please Help!!!
How many ATP can be obtained from the complete beta-oxidation and metabolism of one 16-carbon fatty acid molecule?
Answer:
read ex
Explanation:
129 ATP
7. Apply: Look carefully at the picture below and you will see an insect called a
katydid. Katydids evolved from grasshoppers through natural selection. Use
what you have learned to explain how this could have happened.
Answer: This description is an example of camouflage adaptations.
Explanation:
The grasshoppers are the insects which feed on plant parts and they are able to change their color with respect to their surrounding environment. For example, if they are living on the brown tree trunk they change their color to brown and on the green grass or green leaves they change to green to remain undetected by the predators. This way they are able to camouflage their predators this adaptation allows their survival in their environment with due course of natural selection. The phenotypic trait that is grasshopper is able to change its color increases the chances of survival of the grasshopper. Kaytids have evolved from grasshoppers means they have camouflage traits as that in parent grasshopper species. They have structure which blends with surrounding environment, that is they have wings that mimic that of pattern of leaf venation, also when they change the color to brown the shape of the body appears to be as that of stem. This structural adaptation help them to camouflage their predators.
Help fast plz!!!
In a population of moths, wing color became darker over time. Which of the
following is the best evidence that the change in wing color was an evolutionary change?
a) The size of the moth population changed.
b) The average length of the moths' dark wings increased.
c) The number of eggs that females laid during each breeding season increased.
d) The frequencies of the alleles for dark wing color in the moth population
changed.
Answer:
d) The frequencies of the alleles for dark wing color in the moth population
changed.
Answer:
D
Explanation:
It would best describe how or what made the moths have more dark/darker collored wings overtime.
Does someone knows this question
Answer:
D. Viruses can have a lipid envelope derived from the host cell membrane. So they have the same phospholipids and glycoproteins (they also have specific viral proteins)
Muscle tissues are made of specialized unitss called?
Answer:
Each skeletal muscle fiber consists of a bundle of myofibrils, which are bundles of protein filaments. The filaments are arranged in repeating units called sarcomeres, which are the basic functional units of skeletal muscles.
Explanation:
Answer:
skeletal muscle
Explanation:
Photo synthesis is impossible at a depth of 1000 b/c ? A. It is too hot B. Only blue light penetrates this far C. No light penetrates this far D. It is too cold
Answer:
B. Only blue light penetrates this far
Explanation:
Please Help!
Who would be best qualified to consult on a case requiring forensic entomology?
A. A person with a Master's Degree in Entomology and less than a year's experience in Forensic Entomology.
B. A person with a Doctor's Degree and Membership in a Professional Society of Forensic Entomology.
C. A person with a Bachelor's in Entomology, but no experience in Forensic Entomology.
D. A person with a Doctorial Degree in Entomology and a Certificate in Forensic Entomology.
D. A person with a Doctoral Degree in Entomology and a Certificate in Forensic Entomology.
They will know the most about forensic entomology compared to the rest of the options.
A person with a Doctorial Degree in Entomology and a Certificate in Forensic Entomology. Hence option D is correct.
What is Entomology ?Entomology is defined as the investigation of insects and how they interact with people, the environment, and other living things. Entomology is employed extensively in a wide range of fields, including evolutionary biology and medical research, in addition to studying the anatomy and physiology of insects. It aids agricultural entomologists in their research on biodiversity as well as in the protection of priceless resources from insect pests.
Forensic entomology is defined as the study of arthropods, particularly insects, connected to criminal activity and other judicial issues. An essential tool in the examination of homicide, self harm, and other violent crimes is forensic entomology. When properly gathered and examined by skilled forensic investigators, insect evidence found on a victim's corpse can provide important information.
Thus, a person with a Doctorial Degree in Entomology and a Certificate in Forensic Entomology. Hence option D is correct.
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The role of the RNA-induced silencing complex (RISC) in RNA interference is to cleave tRNAs to slow the rate of translation. disrupt gene expression by cleaving mRNAs that are complementary to the guide strand of the RNA duplex that was introduced. cleave the introduced RNA duplex. disrupt gene expression by interfering with mRNA export to the cytoplasm. create a passenger strand to bind to the mRNA and keep the mRNA from being translated.
Answer:
disrupt gene expression by cleaving mRNAs that are complementary to the guide strand of the RNA duplex that was introduced
Explanation:
The RNA-induced silencing complex (RISC) is a ribonucleoprotein complex composed of proteins that associate with regulatory small non-coding RNAs (sncRNAs) such as, for example, microRNAs (miRNAs) and small interfering RNAs (siRNAs) in order to regulate gene expression by the RNA interference (RNAi) pathway. These sncRNAs (around 18-30 nucleotides in length) are complementary or nearly complementary to messenger RNAs, thereby they can bind to target mRNA sequences in order to trigger RNAi via mRNA degradation, translational repression, etc. The core component of the RISC complex is an evolutionary conserved Argonaute (Ago) protein that cleaves target mRNAs.
ASAP PLS HELP !!! Jfndndbrhdbdbr pls
Cellular Respiration and Energy
Answer:
answers answers answers
Explanation:
1. carbohydrate
2.store energy
3.chemical energy
4. food
5. glucose
6. cellular respiration
7. ATP
A seed contains
A) cotyledons
B) xylem
C) stoma
D) phloem
answer:
a) cotyledons
explanation
HELP PLS!!! (PSYCHOLOGY) I'LL GIVE YOU BRAINLIEST IF UR RIGHT!!
Nate is a teacher who has been in the dassroom for 25 years. When a new teacher is hired, he offers to be a mentor because he loves helping new teachers get inspired about working with children. He wants to help make sure that the teaching profession remains high quality. How would Erikson MOST likely describe Nate's efforts?
A.) Nate is working en generativity.
B.) Nate is working on ego integrity.
C.) Nate is working on intimacy.
D). Nate is working on acceptance
Answer:
A.) Nate is working on generativity
Explanation:
Generativity is the ability to provide care or concern for younger or older genrations. Nate offers to be the mentor because he loves helping the new teachers get inspired about working with children. According to Erik Erikson theory of psychosocial development, generativity can refer to "making your mark" or impact on the world through creating or nurturing things that will outlast in an individual/individuals.