how does diffusion impact the toxicity of an environment?
Answer:
A chemical's physical state and the route of exposure influence toxicity. ... Inhalation exposure also allows some rapid entry into the systemic circulation, causing toxic effects distant from the entry route.
Explanation:
Mitosis and meiosis are cell division mechanisms that lead to different numbers of daughter cells. Which explanation best describes how these two processes maintain continuity?
meiosis :cell division that produces reproductive cells in sexually reproducing organisms
mitosis:cell division in which nucleus divides into nuclei containing the same number of chromosomes
meiosis nucleus divides twice and produces 4 daughter cells which are not genetically the same
mitosis necleus divides ones and produces two daughter cells which are genetically the same
What part of meiosis involves the splitting of 2 cells to make 4 total cells
Answer:
Meiosis II
Explanation:
During Meiosis II, the 2 cells were split into 4 cells, each with 23 chromosomes.
what is the scientific name of frog
Answer: Anura
Explanation:
Answer:
The scientific name for a frog is Anura.
Which unhealthy condition30 point would most likely result from a person eating too much food for many years?
Answer:
Conditions such as obesity, stroke, high blood pressure, heart disease, and diabetes can occur to someone who eats too much unhealthy food for many years.
Where are diploid cells found ?
A. only in reproductive organs
B. only in twin siblings
C. through out the body
D. only in the lungs
Answer:
c
Explanation:
diploid cells are cell that have 2 genetic alleles, one from your mom and one from dad, so all your cells are diploid, except haploid cells in the rep system.
1. A customer from a previous season comes into your store confused. A
bed of pink four o'clock flowers she planted the previous season self-
seeded and produced a mixture of about 1/4 red, 1/4 white, and 1/2 pink
flowers this year. The customer wants to know why the pink flowers are
now a mix of colors. This is possible because of ...
*
Answer:
The genes in flowers vary and change every season a little bit if they are not the perfect "pink" or "red" seed gene they will vary.
Hope this helps :)
what is a false scorpion
Answer:
huh im not prcicley undertsa
Answer:
A pseudoscorpion, also known as a false scorpion or book scorpion, is an arachnid belonging to the order Pseudoscorpiones, also known as Pseudoscorpionida or Chelonethida. Despite their appearance to true scorpions and ticks, they are NOT harmful to people. Physical removal is the only necessary control.
Explanation:
During cell reproduction, inherited information is carried by.
genes
bacteria
cytoplasm
nuclei
Answer:
During cell reproduction, inherited information is carried by:
A. nuclei
B. bacteria
C. cytoplasm
D. genes
The answer is D genes
Explanation:
In a flower, the anther is attached to filament. What advantage does the filament provide to the anther?
A. The filament elevates the anther to allow for easier transport of pollen by wind or insects.
B. The filament provides the anther with nutrients to produce pollen grains.
C. The filament protects the anther from harsh sunlight and insects.
D. The filament produces a sticky surface to allow the anther to capture pollen.
The correct answer is A. The filament elevates the anther to allow for easier transport of pollen by wind or insects.
Explanation
The filament of a flower is the sterile part of the stamen (male organ of the flower) that is located just below the anther. Its function is structural to hold the sling so that it is accessible to insects. The filament is usually cylindrical and fine. Therefore, the correct answer is A. The filament elevates the anther to allow for easier transport of pollen by wind or insects.
Drag the tiles to the correct boxes to complete the pairs.
Identify the types of inheritance based on the expression of alleles in the organism.
Answer:
Presence of many alleles for the trait to be expressed --> Multiple
Presence of two alleles for the trait to be expressed --> recessive
Presence of a single allele for the trait to be expressed --> dominant
Answer:
Presence of two alleles for the trait to be expressed: recessive
Presence of many alleles for the trait to be expressed: multiple
Presence of a single allele for the trait to be expressed: dominant
Explanation:
Edmentum
Which has the highest density?
A. water at 0°C
B. water at 4°C
C. water at 6°C
D. water at 8°C
22) During durg adminsteration not necesary tell
to the patient
A) Prupase of durg
B) Side effect of durg
C) Route of mrdication
The opening and closing of the heart valves is caused by Multiple Choice action potentials within the cusps of the valves. pressure changes of alternating contraction and relaxation during the cardiac cycle. contraction and relaxation of papillary muscles that pull on heart strings. contraction of the smooth muscle in the walls of the great vessels leaving the heart.
Answer:
pressure changes of alternating contraction and relaxation during the cardiac cycle.
Explanation:
In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
Generally, the cardiac cycle occurs in two (2) stages;
I. Diastole : in this stage, the ventricles is relaxed and would be filled with blood.
II. Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.
Hence, the opening and closing of the heart valves is caused by pressure changes of alternating contraction and relaxation during the cardiac cycle.
What is fermentation? Select all that apply.
process that breaks down larger molecules
into smaller molecules
process that uses oxygen to create usable
energy for the body
process that does not rely on the presence of
oxygen
process that creates waste products
Answer:
Option One
Option Three
Option Four
Explanation:
Fermentation is the process of breaking down substances different types of bacteria or microorganisms will producing heat, this process can also be completed without the usage of oxygen. Finally, fermentation is used to create alcohol like wine or beer which is considered wastes to the body. Therefore options one, three, and four are your answers or "process that breaks down larger molecules into smaller molecules, energy for the body process that does not rely on the presence of oxygen, and process that creates waste products."
Hope this helps.
3.2 Exploin in detail 5 socio-economic factors
that influence your study
choices and your future career
Answer:
There are various social economic factors that affect a personal choice of higher education course and future career. Some of these factors include
Gender and equity Personal preferences The economic status of the student and the family Employment opportunities for the course being studied Religion and beliefs.Al these factors and many more are said to affect the higher education course that a student takes and the future career of this student
Please mark as brainliest
Have a great day, be safe and healthy
Thank u
XD
Granite has only recently been exposed at a location on Earth’s surface. What will need to happen first in order for granite to become sedimentary rock?
Answer:
Granite has only recently been exposed at a location on Earth's surface. What will need to happen first in order for granite to become sedimentary rock? A thick layer of humus must form on top of the granite. The granite must be broken into smaller pieces by weathering processes.
Explanation: hope this helps dude
In Drosophila, the genes for eye color, wing shape, and wing length are located on chromosome II. Purple eyes (pr), arc bent wings (a), and vestigial wings (vg) are the mutant forms of the wild type traits red eyes, straight wings, and long wings, respectively. You've discovered some data in your genetics laboratory which indicates that the distance between vg and pr is 12.5 m.u., the distance between a and pr is 44.7 m.u., and the distance between a and vg is 32.2 m.u. what is the chance of a double crossover between these three genes
Answer:
The expected double recombinant frequency = 0.0402 = 4.02%
Explanation:
Available data:
genes for eye color, wing shape, and wing length are located on the same chromosomePurple eyes (pr) is the mutant form of the wild type traits red eyes (pr+)Arc bent wings (a) is the mutant form of the straight wings (a+)Vestigial wings (vg) are the mutant forms of the long wings (vg+)the distance between vg and pr is 12.5 m.uthe distance between a and pr is 44.7 m.uthe distance between a and vg is 32.2 m.u→ Two genes that are very close will have a few recombination events and are strongly bounded.
→ The map unit is the distance between the pair of genes for which every 100 meiotic products, one of them results in a recombinant one.
1) First, we need to know their order in the chromosome, and to do so, we need to compare the distances between them.
The most distant pair is a-pr
----a---------------------------------------------pr---
║-------------------44,7 MU-------------║
From gene a to vg there are 32.2 MU
----a-----------------------------vg--------------pr---
║-------------------44,7 MU-------------║
║----------32.2 MU------║
Finally, de distance from vg to pr is 12.5 MU
----a-----------------------------vg--------------pr---
║-------------------44,7 MU---------------║
║----------32.2 MU------║--12.5 MU--║
We can name region I to the distance between a-vg, and region II to the distance between vg-pr.
2) To calculate the recombination frequency, we have to know that 1% of recombinations = 1 map unit = 1cM. And that the maximum recombination frequency is always 50%.
1 MU -----------1% of recombination
32.2 MU -----X = 32.2 % of recombination
12.5 MU-------X = 12.5 % of recombination
3) The expected double recombinant frequency = recombination frequency in region I x recombination frequency in region II.
The expected d. recombinant frequency = 32.2% x 12.5% = 0.322 x 0.125
The expected double recombinant frequency = 0.0402 = 4.02%
A cleft chin in humans is coded by the dominant allele C. A chin without a cleft is coded by the recessive allele c. A man with a cc allele combination for the trait produces a zygote with a woman with a Cc allele combination for the trait. Which allele combinations could occur in the zygote?
Answer:
The allele combinations are: Cc, cc, Cc, cc
Phenotypically there is a 50% chance that the child will be born with or without the cleft
The allele combinations that could occur in the zygote is Cc or cc.
What is an allele combination?An identification of the specific alleles found at each of the relevant mouse loci on the two homologous chromosomes (i.e., all allele pairs of a genotype). One or more allele pairs can make up an allele combination.
Genetic linkage is the capacity of a chromosome to transmit alleles that are near to one another as a whole unit through meiosis. Inheritance of traits is also understood by this principle. It is useful in locating the genes that are in charge of characteristics and diseases.
The person is homozygous for the allele if the two alleles are the same. The person is heterozygous if the alleles are different.
Therefore, the zygote may include the allele combinations Cc or cc.
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You are studying a new gene "X" that you think controls skin color in Bearded Dragons. In order to determine what gene X does you need lots of gene X DNA to work with. So, you decide to amplify it through the process known as PCR. You have a forward and a reverse primer that have been designed to gene Xf – a gene in frogs that is similar to the one found in the Bearded Dragon. You are pretty sure that these two primers will work in Bearded Dragons, so you decide to go ahead with the PCR. In frogs, the Forward Xf primer binds gene Xf between nucleotides 32 and 47. The Reverse Xf primer binds between nucleotides 1110 and 1135. What size PCR product would these two primers create if they amplified the frog gene Xfp
Answer:
The correct answer is - 1103 bp.
Explanation:
PCR or polymerase chain reaction is a process that uses a primer to amplifying the desired segments of DNA molecules. It is a technique that can amplify a million copies of the DNA segment.
given:
forward primer binds from - 32 to 47
reverse primer binds from - 1135 to 1110
PCR product would be between - 32 to 1135
So, product size would = 1135-32 = 1103.
Thus, the correct answer is - 1103.
17. When a person looks up into the sky
during new moon, what fraction of the
bright surface of the moon do we see?
Answer:
i dont really know why and how im here but im here
Explanation:
The skin cells of an organism are analyzed and cells identified in G1 and have an average of 12 picograms of DNA. In the same organism a cell from gonadal tissues is identified and that single cell contains 6 picograms of DNA. Given this information, which of the following is true about the single gonadal tissue cell with 6pg of DNA?
1. The cell is at the beginning of Prophase I.
2. The cell has already completed meiosis.
3. The cell is not dividing (is in interphase).
4. The cell contains unduplicated chromosomes.
Answer:
El Rasho Macuin
Explanation:
The statement which is true about the single gonadal tissue cell with 6 picograms of DNA is that the cell has already completed meiosis. So, the correct option is B.
What do you mean by DNA?It is a complex molecule that contains all the information necessary to build and maintain an organism. It stands for Deoxyribonucleic acid. It is considered the genetic material in most organisms.
The skin cells in the G1 phase have an average of 12 picograms of DNA. As the amount of DNA in the G1 phase is 2C, hence 2C = 12 pg of DNA.
Now in the same organism, a cell from gonadal tissue is identified and that single cell contains 6 pg of DNA, which means, the amount of DNA is 6 pg that is C. Therefore, after the completion of meiosis, the cell contains half the amount of DNA as compared to the parent cell in G1.
So, Amount of DNA = C = 6 pg.
Therefore, the statement which is true about the single gonadal tissue cell with 6 picograms of DNA is that the cell has already completed meiosis.
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How many alleles are typically present in a genotype?
Answer:A genotype is the combination of two alleles, one received from each parent. The expression of a genotype is called the phenotype and the specific combination of the two alleles (the genotype) influences the physical expression (the phenotype) of the physical trait that the alleles carry information for.
Explanation: so 2
Using this illustration as a guide, indicate the level one would need to drill to gain a sample containing the highest ratio of parent rock in comparison with organic material.
horizon C
horizon A
horizon B
horizon O
Answer:
horizon C
Explanation:
The horizon C has the highest ratio of parent rock as compared to organic matter. This horizon starts after horizon B and present above the bed rock. This horizon consists of weathered and partially decomposed rocks. It is the actual layer of soil of that place whereas the other horizon A and B comes with the passage of time when the wind bring the soil particles and these particles deposits on this layer of the soil making horizon A and B.
5. Which of these would be the best thing for scientists to examine if they wanted to see if two organisms had a common ancestor?* O They would look at the larval forms of the organisms They would look at what the organisms liked to eat They would look at how the organisms reproduce. O They would look at how the organisms migrated to new locations
How does the process of binary fission work in the asexual reproduction of bacteria?
A. Two cells join to become one larger cell
B. One cell splits into two cells with identical DNA.
O. DNA material from the environment is added to the cell.
D. Bacteria can only reproduce via sexual reproduction, not asexual reproduction,
The process of binary fission work as 'one cell splits into two cells with identical DNA. in the asexual reproduction of bacteria'.
So, option B is correct one.
What is binary fission?The simplest meaning of binary fission is division into two. The binary fission is the most common methods of asexual reproduction.In biological , division of single entity into two or more parts and regenerates of these parts again and each parts have potential to grow to the size of the original cell.Binary fission occurs in Amoeba which is unicellular organismThe binary fission is type of asexual reproduction.What is asexual reproduction of bacteria
The bacteria is prokaryotic organisms that reproduce asexually and bacteria is mainly reproduce by binary fission in which single cell divides into two .
There are some bacteria which divides in every 10 to 15 minutes .
learn about binary fission
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What is the purpose of the part of the male reproductive system that is
highlighted below?
A. Creates the fluid in semen
B. Transfers sperm cells to the urethra
C. Manufactures sperm cells
0
D. Stores sperm cells until they mature
Answer:
A creates the fluid in semen
Characteristics of codon
Imagine you’re a doctor treating a patient with severe vision issues. What questions might you ask to determine whether these issues are more likely to be inherited or caused by environmental factors?
Answer:
Ask if any of his/her siblings have vision issues
Ask if any of his/her parents or grandparents have vision issues
Ask if any of his/her children have vision issues
When two parents join to form a new individual-
Offspring will NOT be identical to one parent.
It will have traits from both parents
Both A and C
Offspring will be identical to one parent.
Help please!!
Answer:
"B"
Explanation:
It will have both traits from both parents.