Answer:
⬇ See answer below ⬇
Explanation:
A fish is a(n) aquatic animal which has gills and can only find oxygen underwater. Toads are quite different though as they are amphibians who can live on both land and underwater. (Hope this helped you!)
The species Trichonympha ______________. Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a may be isolated from the gut of termites where it is essential for cellulose digestion b is a ciliated organism c is a flagellated organism d both a and b e both a and c
Try this for yourself. Suppose you want to estimate the number of field mice in a small field. One day you capture 500 mice, mark all of them and release them. The next week you capture 200 mice of which 40 were marked by you yesterday. What is your estimate of the population size?
Answer:
The approximate size of the field mice population is 2500 individuals.
Explanation:
There are different methods to study population density. There are direct methods and indirect methods. Among these last ones, we might find the "Mark-Recapture technique".
The Mark-Recapture technique assumes that the population is closed, during the sampling season there is no mortality nor natality, marks in the individual last the whole sampling season, and these do not affect the marked individual or their behavior. These marked individuals are randomly distributed in the population, and all the individuals have the same probability of being sampled.
The method consists of capturing a sample of individuals belonging to the population under study, in this case, the field mice population. After capturing the individuals, the researcher marks them and release them again. The third step is to sample again, capture a new amount of individuals, and count how many of them are marked. These marked individuals belong to the first sample. We can calculate the population size by using the Lincoln Index or any other index.
The Lincolns Index states that to obtain the population size, the research must follow the following procedure:
1) Take an initial sample with n1 number of individuals
2) Mark all the sampled individuals and release them
3) Take a second sample with n2 number of individuals
4) Count the number of marked individuals m
To estimate the total number of individuals in this population, N, the following equation must be considered:
N = (n1 x n2)/m
In the exposed example, this is:
• n1= 500 individuals in the first sample
• n2= 200 individuals in the second sample
• m= 40 individuals in the second sample that were previously marked
as they were part of the first sample
N = (n1 x n2)/m = (500 x 200) / 40 = 2500 individuals
The approximate size of the field mice population is 2500 individuals.
If the entire mRNA sequence for a polypeptide was AUGUACUCGCGACCGUAA, how many amino acids does the polypeptide have
Answer:
5 amino acids
Explanation:
The process of translation involves synthesizing a sequence of amino acids from a mRNA template. The mRNA molecule is read in a group of three nucleotides called CODONS. A codon specifies or codes for an amino acid.
In the question, a mRNA sequence was given as follows: AUGUACUCGCGACCGUAA. From this sequence comprising of 6 codons, 5 possible amino acids will be contained in the polypeptide encoded by this mRNA molecule as the last codon (UAA) is a STOP codon. The following are the codons in the mRNA sequence and their respective amino acids:
*AUG- methionine (met)
*UAC - tyrosine (Tyr)
*UCG - Serine (Ser)
*CGA - Arginine (Arg)
*CCG - Proline (Pro)
*UAA - Stop
A reproductive cell must differ from other normal body cells. The reproductive cell must ______________ because it will soon fuse with another reproductive cell to form a new individual
I'm not 100% sure what the exact answer is to this, because lots of things could be said about what gametes need to do for reproduction.
I suppose since it says that it's combining with another cell, it's hinting at the fact that reproductive cells are haploid.
If this is multiple choice I would choose the choice that has to do with gametes being haploid.
A reproductive cell must differ from other normal body. The reproductive cell must Haploid because it will soon fuse with another reproductive cell to form a new individual.
How is a reproductive cell specialized?The requires the union of two specialized cells, called gametes, each of which contains one set of chromosomes.
Thus, haploid is the answer.
To learn more about haploid click here:
https://brainly.com/question/7212380
Normally, this region is imprinted in the sperm, but not the egg. This means that the DNA on the ____________ copy of the chromosome will be methylated at the imprinting center, while the DNA on the ____________copy of the chromosome will not be methylated in this region.
Answer: The DNA on the paternal copy of the chromosome will be methylated at the imprinting center, while the DNA on the maternal copy of the chromosome will not be methylated in this region.
Explanation:
Chromosomes are DNA structures associated with proteins such as histones. They are found in the nucleus of cells and contain genetic information for the development and functioning of an organism. Human beings are diploid, meaning that they possess two copies of each of the 23 chromosomes (a total of 46).
Gametes, which are sex cells such as the sperm (produced by the male) and the egg (produced by the female) that are haploid. This means that they possess only one chromosome of each pair. During fertilization, a male gamete fuses with a female gamete to generate a zygote, which will give rise to a new human being. This new individual will possess half of the genetic material from its father and half from its mother. Thus having a total of 46 chromosomes, 23 from each parent.
Genetic imprinting modulates gene expression by chemical modification of DNA and/or modification of chromatin structure. Often, genetic imprinting causes a gene to be expressed only on the chromosome inherited from one of the parents. One example of imprinting is DNA methylation, which is a process by which methyl groups are added to DNA. Methylation modifies DNA function when found in the promoter gene, repressing gene transcription. This means that a methylated gene will not be expressed, that is, it will not produce a protein encoded by that gene. So, if a region of DNA is imprinted in the sperm cell, the paternal chromosome inherited from this sperm will be methylated in the genes of the offspring. And the offspring will only express the maternal copy inherited, which will not be methylated.
Discuss how important you think it is to protect ecosystems from human-induced change, such as changes in habitat or introduction of invasive species. Should natural conditions be preserved at all costs, should human needs always prevail, or is the answer somewhere in between? Discuss the negative consequences of taking an approach that you disagree with.
Answer:
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. ecosystems are vital for human welfare and survival, as they provide us with essential products and benefits.
Over 90% of our food comes from terrestrial ecosystems, which also provide energy, building materials, clothes, medicines, fresh and clean water, and clean air. Protecting wildlife and preserving it for future generations also means that the animals we love don't become a distant memory. And we can maintain a healthy and functional ecosystem.
Complete each sentence by dragging each word or phrase to the proper position. Then arrange the sentences into the order of occurrence of motor impulses of the ANS.
1. Action potentials travel along the nerve fiber and enter the__________.
2. Fibers exiting the take one of three routes: the spinal nerve route, the sympathetic nerve route, and the _________nerve route.
3. Arriving at target cells_______ nerve fibers release acetylcholine or norepinephrine into the synaptic cleft.
4. Also known as the________ division, the sympathetic nervous system exits the preganglionic CNS via the spinal nerves from T1-L2.
5. The effect of norepinephrine binding to_______ receptors stimulates cardiac muscle cells. i. postganglionic
ii. sympathetic chain ganglia,
iii. craniosacral
iv. thoracolumbar
v. cholinergic
vi. preganglionic
vii. adrenergic
viii. splanchnic
Answer:
1. vi. Preganglionic
2. vii. adrenergic
3. ii. sympathetic chain ganglia
4. iii. Craniosacral
5. viii. splanchnic
Explanation:
Action potential travel down preganglionic nerve fibre. They travel towards Vagus Nerve near the effector organ. These impulses arrive at cardiac plexus, which create action potential in postganlianic.
A cell that connects the body to receive the signal from the brain to do the action is called a neuron and the tissue system is called the nervous system.
The answer to the following question is as follows:-
Action potentials travel along with the nerve fiber and enter the Preganglionic Fibers exiting take one of three routes: the spinal nerve route, the sympathetic nerve route, and the adrenergic nerve route. Arriving at target cells sympathetic chain ganglia nerve fibers release acetylcholine or norepinephrine into the synaptic cleft. Also known as the Craniosacral division, the sympathetic nervous system exits the preganglionic CNS via the spinal nerves from T1-L2.The effect of norepinephrine binding to splanchnic receptors stimulates cardiac muscle cells.Hence, these are the answer to the question.
For more information, refer to the link:-
https://brainly.com/question/3523174
Aspirin may still irritate the stomach as a side effect. What functional group in the molecule is responsible for this effect
Answer:
The functional group that irritates the stomach is known as the salicylic acid molecule.
Explanation:
the prime mover of inspiration is the blank during normal quiet breathing expiration is a passive process as this muscle relaxes into its original dome shape. provide conditions when expiration becomes an active process or forced. explain
Answer:
The prime agonist of inspiration is the diaphragm muscle.
The conditions when expiration becomes an active process is : Emphysema, Pneumonia, Bronchitis.
-Expiration is the passive process as there is elastic recoil of lungs following inspiration without contraction of any muscles.
-The elastic fibers in alveoli are damages or filled with mucus and fluid in the disease such as conditions such as emphysema or pneumonia.
-Elastic recoil of lungs.
-Hence, muscle contraction is required to forcefully exhale the air from lungs. Internal intercostal muscles contract to pull the ribs downward and remove air from the lungs.
The genetic code is defined degenerate or even redundant because:
A. the same codon codes for different amino acids
B. an amino acid can be encoded by several codons
C is different in all organisms, except in monozygotic twins
D. the sequence of codons is not separated by intervals, but is continuous
E. the structure of the genes is constantly mutating
Answer:
B. an amino acid can be encoded by several codons
Explanation:
The genetic code refers to the set of rules that govern how the four nitrogenous bases (A,U,G,C) is arranged to form amino acids. The genetic code is a collection of all the CODONS formed. There are different characteristics of the genetic code and one of them is its REDUNDANCY.
Since there are 4 nitrogenous bases combined in three's to form a codon i.e. 4³, there are 64 possible codons that could form 20 maximum amino acids. This means that there are more codons in relation to amino acids. Hence, more than one codon can encode an amino acid, and this is referred to as REDUNDANCY of the genetic code.
For example, LEUCINE amino acid is encoded by 6 codons as follows: UUA, UUG, CUU, CUC, CUA, CUG.
Describe a metabolic pathway that is inhibited by the action of a pesticide.
Explanation:
The mecanism is termed as feedback inhibition.
Explanation:
In an enzyme catalyzed sequential reaction the end product of that reaction inhibits the activity of the activity of the enzyme catalyzing the ist step This type of regulation is called Feed back regulation or feedback inhibition.
The main function of human body is to maintain the homeostasis of the all the components it contains.When the end product of an ongoing enzyme catalzsed sequential reaction is produced in a high lebel at that time to maintain its own homeostatis that end product inhibits the functioning of the enzyme catalzsing the ist step of that biochemical reaction.
For Example Cytidine tri phosphate inhibits the activity of aspartate transcarbamoylase catalyzing the de novo biosynthesis pathway of pyrimidine metabolism.
Which of the following particles has no charge?
O A. Electron
O B. Neutron
C. Proton
D. Ion
Answer:
B. Neutron.
Explanation:
[tex]{ \tt{ {}^{1} _{0}{ \huge{n}} }}[/tex]
9.
I've been called the storage tank
By those with little taste
I'm a sack filled with water,
Food, enzymes, and waste
What am I?
A)Golgi Body (Complex)
B)Endoplasmic Reticulum
C)Nucleus
D)Ribosomes
E)Cell membrane
F)Cell wall
G)Vacuole
H)Lysosomes
I)Vesicles
J)Chloroplast
K)Chromosomes
L)Mitocondria
Answer: G)Vacuole
Explanation:
G)Vacuole is the answer. Hope this helps!
Which of the following was not part of the original cell theory, but was added later after we learned more about cellular structure?
A. all cells have the same basic composition
B. all cells come from pre-existing cells
C. all cells have a nucleus
D. all cells have the same exact structures.
Answer:
c oooooooooooookkkkkkkkkkk
In one study, 108 regions of the genome were identified to be significantly associated with schizophrenia. Below is a Manhattan plot showing the results from this study. Assuming that none of the causative variants are linked and there is a single causative variant per peak region, how many regions of chromosome 6 with causative variants were identified in this study
Answer: hello your question is incomplete attached below is the missing part of the complete question
The top of the highest peak corresponds to a region of the genome called the MHC locus. This means that of all the variants identified by this study, ____________.
the variant in MHC is observed the most frequently in the affected cohort.
the variant in MHC can cause schizophrenia in a Mendelian fashion.
the variant in MHC is the least likely to be a false positive result.
the variant in MHC has the largest odds ratio.
answer:
i) 4
ii) the variant in MHC is the least likely to be a false positive result. ( C )
Explanation:
The number of regions of chromosome 6 with causative variants identified is 4
While the variant in MHC is the least likely to be a false positive result. this is because, it is the highest peak in of all the causative variants identified in this study (i.e. closely related to the disease) and been the highest peak will make it least likely to return a false positive result.
In the Science Olympiad, what is the main branch of science to study?
Answer:
Well, so far there are three branches of Science namely;
Earth SciencePhysical ScienceLife Scienceexplain the importance of taking named precautions before blood transfussion can be done?
Answer:
To minimize the chance of an adverse reaction during a transfusion, health care practitioners take several precautions. Before starting the transfusion, usually a few hours or even a few days beforehand, the person is cross-matched with the donor blood (not done for transfusions of plasma or platelets).
Please help!! Answers!!! I Need The Right Answer!! A group of scientists studied the environmental impact of internal combustion engines burning hydrocarbon fuels. The scientists equipped four vehicles with devices to capture and measure particulate emissions. One vehicle burned diesel fuel, one burned ordinary gasoline, one burned a gasoline/ethanol mixture, and one burned natural gas. The four vehicles had equal masses and carried identical cargo. The scientists drove each vehicle 400 kilometers, recording the volume of fuel burned and the quantity of particulate emissions generated.
What is the independent variable in this experiment?
A.
type of fuel
B.
distance traveled
C.
mass of vehicle and cargo
D.
quantity of particulate emissions
Answer:
A. type of fuel
Explanation:
The scientists combusted different types of hydrocarbons (different type of fuel)
6. What does the concept of learning set suggest?
O A. Ideas are needed to solve difficult problems.
O B. Emotion needs to be excluded from experiments involving cognition.
C. Imagination is the key to problem solving.
D. Animals learn how to learn.
Answer:
B. Emotion needs to be excluded from experiments involving cognition.Explanation:
#CarryOnLearning[tex]{hope it helps}}[/tex]
g Would an observational study or an experiment be more appropriate to investigate the effects on fertilizer on plant growth? Explain.
Answer:
The economists typically receive information premised upon the information gathered during controlled studies. A further explanation is provided below.
Explanation:
The investigators typically add particular manipulation throughout the observational investigation and analyze the consequences.The survey was performed here because the investigators simply would be required to examine the influence of fertilizer on the development of plants. Each assistance must be applied.Which of the following events is typical of meiosis but not of mitosis?
A the chromosomes are highlighted
B. the centrioles are formed
C chromatids separate
D. the homologous chromosomes are paired AND the spindle is formed
Answer:
D. the homologous chromosomes are paired AND the spindle is formed
Explanation:
Meiosis is the type of cell division that results in four daughter cells with each having a reduced number of chromosomes (by half). Both meiosis and mitosis occur in different stages including prophase, metaphase, anaphase etc but meiosis occurs in two series of division processes called meiosis I and meiosis II.
In prophase I of meiosis, homologous chromosomes, which are similar but non-identical chromosomes from male and female parents pair to form tetrad or bivalent. This pairing of homologous chromosome is unique and peculiar to MEIOSIS but never mitosis.
what can happen during the cycle of photosynthesis with increasing concentrations of Atrazine?
Answer:
By inhibiting photosynthesis, Atrazine kills plants. Photosynthesis, which is unique to living green plants, occurs when light energy becomes the chemical energy required for food production.
Simply stated, plants eventually die of hunger when food production stops. Atrazine selectively kills unwanted plants (weeds) competing with suitable plants for water and nutrients (crops, turfgrass). It is thus a beneficial tool for both farming and urban plants.
Explanation:
In Texas maize and grain sorghum production, Atrazine is the most often used herbicide. In several "weed and feed" preparations for domestic plowing and commercial turf-grass weed control, it is also often found as an active ingredient.
With its broad use, atrazine has been identified in minute concentrations in Texas ground and surface waterways. Because of this, it is crucial to understand atrazine behavior in the environment and the potential for harmful impacts on human and animal health and on other non-target organisms.
02-Why is it important to meet the members Of your extended family?
Answer:
because they are our heart and supporting members
18. Why are enzymes important to cells?
о
They provide structural support.
о
They form the two layers of membranes.
They store large quantities of energy.
о
They help bring about chemical reactions
Answer:
An enzyme is a type of protein found within a cell. Enzymes create chemical reactions in the body. They actually speed up the rate of a chemical reaction to help support life.
What is the Ukrainian?
Explanation:
Ukraine is a country in Eastern Europe. It is the second-largest country in Europe after Russia, which it borders to the east and north-east.hope it helpsstay safe healthy and happy....characteristics of Pisces
Answer:
Pisces are known as amazingly imaginative, creative, empathetic, and kind, they can also be overly sentimental, impressionable, and closed off.
Explanation:
Hope this helps!
Which of these is a benefit of fish farming?
A. It can deplete native fish populations
B. It can restock lakes depleted by recreational fishing
C. It can pollute natural bodies of water
D. It can pass diseases to native fish populations
Answer:
The answer to this would be B
Explanation:
B:It can restock lakes depleted by recreational fishing
PLEASE BE QUICK!!!!! This scientist is using a computer model to predict the
weather.
What is one limitation of computer models?
A. Computer models help scientists make predictions about complex
systems
B. Computer models analyze many pieces of data in a short time.
ООО
C.
mputer models require valid data to make accurate predictions.
D. Computer models test hypotheses by simulating different
situations.
PREVIOUS
Answer:
C
Explanation:
I would say C because it HAS to have valid data. Which is a limitation especially if you can't get that data.
define cell and atom
Answer:
cell is the structural and functional unit of live.
Atom are the smallest particle of chemical element
Upon completion of seeding a flower and a vegetable, research and identify the optimum propagation conditions, such as, water and light demand, appropriate temperature, and, other elements that may affect the germination from seeding. Compare your research findings with your existing conditions. If any discrepancies found, address how you would like to mitigate. Describe the entire process in your weekly lab report journal. Add photos, sketches or other supplementary information, if necessary.
Answer:
Needs optimum environmental conditions.
Explanation:
Seedling, a flower and a vegetable needs suitable conditions for growth and development. All of the three stages of plant life cycle requires optimum water, fertilizers and light intensity in order to grow and develop at full speed. Seeds need a specific temperature in order to germinate. Most seeds germinate when the soil temperature is between 68 and 86 Fahrenheit. In the same way the plant also needs specific temperature for bearing flowers. All the stages requires optimum water in the soil for absorption.