Plants produce sugar and oxygen in a process called photosynthesis, by using sunlight, water, and carbon dioxide. ... In a two-step process, plants obtain chemical energy from sunlight. The collected energy is used in a second reaction to produce the sugar glucose
DNA is used to tell people apart. What aspects of DNA do you think make this possible?
10 points! And I will mark Brainliest :)
Answer:
Kindly refer to the attachment.Thank U,NExt
DNA can be used to tell people apart - their DNA sequences or the lengths of repeated regions of DNA
Deoxyribonucleic acid (DNA) is a molecule that contains the biological instructions that make each species unique.
DNA contains genetic information that is passed from adult organisms to their offspring during reproduction.Each offspring forms by the combination of the parent's gene or DNAThe actual sequence of DNA on each of the chromosomes is unique due in part to recombination.recombination causes genetic variation and made everyone unique.This is incorporated in the nucleotide sequences in DNA molecules.Thus, DNA can be used to tell people apart - their DNA sequences or the lengths of repeated regions of DNA
Learn more:
https://brainly.com/question/13967821
Consider one such cell where the magnitude of the potential difference is 40 mV, and the inner surface of the membrane is at a higher potential than the outer surface. A sodium ion (Na ) is initially just outside the cell membrane (initially at rest). How much work (in J) is required for a cell to absorb the ion, so that it moves from the exterior of the cell to the interior
Answer: W = 6.4x10⁻²¹J
Explanation: Work is the energy transferred to or from an object due to the application of a force along a displacement.
The ion Na is gaining energy to move from a lower potential to a higher one.
For this to happen, the work done is calculated as
[tex]W=q.\Delta V[/tex]
in which
W is work in Joules (J)
q is charge in Coulomb (C)
[tex]\Delta V[/tex] is potential difference in Volts (V)
The ion Na has one positive charge. In coulombs, the charge is
q = 1.6x10⁻¹⁹C
The potential difference in Volts is
[tex]\Delta V[/tex] = 40x10⁻³ or 4x10⁻²V
Calculating
[tex]W=q.\Delta V[/tex]
W = 1.6x10⁻¹⁹. 4x10⁻²
W = 6.4 x 10⁻²¹ J
The work done to move an ion of sodium from the exterior to the interior is 6.4 x 10⁻²¹ J.
In which scenario is the ecosystem the most stable? Suggest a reason for this and use the word competition in this explanation
Answer:
The ecosystem was most stable where the rabbit eats only plant A. I feel like this happened because since the rabbit is only eating plant a, the competition between plants A and B is reduced
Why does a fever become dangerous to body functions if it continues to rise?
A. Dehydration will occur
B. Osmosis may be affected due to lack of water
C. A fever breaking is more dangerous than the fever itself
D. Proteins become denatured and are unable to complete their jobs
b osmosis may be affected due to lack of water
Fever has been defined as the rise in the temperature of the body. The rise in fever is a dangerous process as lack of water causes dehydration in the body. Thus, option A is correct.
What is dehydration?Dehydration is the loss of water and body fluid than the intake of the fluid amount. The high-temperature condition of the body causes the loss of water from the body that gets evaporated from the skin cells.
When a person is suffering from fever the body fluid and electrolytes are lost by vomiting, tears, sweat, diarrhea, and urine. Dehydration can be detected by thirst, dry mouth, dizziness, etc.
Too much heat in the body during fevers results in the loss of water from the body that is more because the fluid intake gets reduced and the body becomes deficient in electrolytes and fluids.
It is a serious problem that should be dealt with so that the cells and tissues of the body can restore the water balance that is crucial for various activities and functions.
Therefore, option A. increase in the temperature in fever causes dehydration.
Learn more about dehydration, here:
https://brainly.com/question/16394592
#SPJ2
From Earth, Star Y appears to be the brightest while Star X and Star Z appear to be similar in brightness. Which list orders the stars from closest to farthest from Earth?
Star X Star Y, Star Z
Star X, Star Z. Star Y
Star Y. Star X, Star Z
Star Y, Star Z, Star X
Answer:A
Explanation:
The order of stars from closest to farthest from Earth is as follows:
Star Y, Star Z, Star X.Thus, the correct option for this question is D.
What is Star?Star may be characterized as a huge ball of blazing gases in space that is typically observed from the earth as a point of light in the sky at night. It is a type of astronomical object.
As we relate the brightness of a star with respect to the distance, it is found that the closer a star is, the brighter it will appear in the sky. So, a Star Y is the brightest, it will closer to the earth. With this sense of knowledge, options 1 and 2 are eliminated.
Star X is larger than star Z, so, star Z is found to be closer than Star X. With this, option 3 is also eliminated.
Therefore, the correct option for this question is D.
To learn more about Stars, refer to the link:
https://brainly.com/question/1426966
#SPJ6
What was your initial reaction to this picture
My eyes feel blessed, I want to pet him. He seem pretty chill
In which of the following hydrogen bonds can be found?
A. Between cytosine and thymine in a DNA double helix
B. Between deoxyribose sugar and nitrogen base in a DNA nucleotide
C. Between deoxyribose sugar and phosphate group in a DNA nucleotide
D. Between purine and pyrimidines bases in a DNA double helix
Answer: C. Between deoxyribose sugar and phosphate group in a DNA nucleotide.
Explanation:
Hydrogen is a very important element in the planet due to the many uses of its compounds for example, water. Hydrogen is also very important to humans as it is integral to DNA formation.
Hydrogen bonds exist in the DNA nucleotide to ensure that different strands are connected to each other. These strands are composed of bonds between deoxyribose sugar and phosphate groups.
w, use what you have learned about heredity to complete the chart below. The allele pairs in the left column represent eye color in fruit flies. Ris the
ominant color (red), and r is the recessive color (white). Study the chart and fill in the missing phenotypes.
Answer:
RR is hom0zygous dominant and will Red
Rr is heterosygous and will also be red
rr is hom0zygous recessive and will be white
Explanation:
The filling of the chart with respect to the genotype given is as follows:
RR (homozygous dominant) gives Red eye color in fruit flies. Rr (heterozygous) will also deliver red eye color in fruit flies.rr (homozygous recessive) gives white eye color in fruit flies. What is meant by Genotype?Genotype may be defined as the ultimate combination of alleles of those genes which are selected for specific study in order to deliver some sort of genetic information.
As it is an organism is its complete set of genetic material. These can also be utilized in order to refer to the alleles or variants an individual carries in a particular gene or genetic location.
In fruit flies, red eye color is dominant over white eye color. So, when red eyed-colored (RR) flies are crossed with white-eyed colored flies (rr), they produce offspring with the genotype Rr and phenotype of red-eye color. This all deals with the law of dominance.
Therefore, the filling of the chart with respect to the genotype given is well described above.
To learn more about Genotypes, refer to the link:
https://brainly.com/question/902712
#SPJ5
50 POINTS AND BRAINLIEST TO WHOEVER IS CORRECT FIRST.How are antiviral drugs used? O A. To treat bacterial infections, such as strep throat OB. To cure viral infections, such as the flu O C. To slow the spread of viruses in the body D. To prepare the body to fight future infections
Answer:
to prepare the body for future infections, the vaccine will kinda help if you have the virus but it will make you not contagious.
Answer:
C. To slow the spread of viruses in the body.
Explanation:
Hope this helps <3
Which inequality is graphed on the coordinate plane?
Answer:
C
Explanation:
Hope this helps you!!!
A tick feeding on a human is an example of
Answer:
This would be a parasitism.
Explanation:
This is where one side benefits and the other is hurt.
Current studies on frogs and wildlife indicate that hormonally active agents (HAAs) are __________.
a.
found in insecticides and should be removed
b.
found in radionuclides in parent rock materials
c.
abnormalities associated with developmental and reproductive systems
d.
causing lung cancer
e.
creating new forms of lizards
Answer:
C
Explanation:
abnormalities associated with developmental and reproductive systems
What process is shown in the diagram below?
A. Karyotyping
First
cycle
O B. Use of restriction enzymes
Second
cycle
C. Polymerase chain reaction
(PCR)
Third
cycle
D. Gel electrophoresis
Fourth
cycle
Answer:
C
Explanation:
polymerase Chain Reaction PCR is your answer 100%
The process of Polymerase chain reaction (PCR) is given in the given diagram. The correct option is C.
What is polymerase chain reaction?Polymerase chain reaction (PCR) is a laboratory technique for rapidly producing (amplifying) millions to billions of copies of a specific segment of DNA, which can then be studied further.
PCR is also useful in a variety of laboratory and clinical techniques, such as DNA fingerprinting, bacteria or virus detection (particularly AIDS), and genetic disorder diagnosis.
The DNA produced by PCR, once amplified, can be used in a variety of laboratory procedures.
Polymerase chain reaction (PCR) is a technology that uses enzymatic replication of nucleic acids to quickly and easily amplify DNA sequences.
This method is indispensable in the field of molecular biology and is one of the fundamental methods for DNA analysis.
Thus, the answer is C.
For more details regarding polymerase chain reaction, visit:
https://brainly.com/question/30555825
#SPJ7
Compare adaptation and fitness
Answer:
Explanation:
An adaptation is a trait an organism has to make it better suited for the enviorment
Fitness, however is the measure of how many offspring an organism can produce and this depends on these individuals having these sucessful adaptations.
if you liked my answer please mark as brainliest.
Approximately what percent of the oxygen on Earth is produced through
photosynthesis?
Answer:
50-85%
Explanation:
Which two features are present in a plant cell but not in an animal cell?
Distinguishing between Cell Types
A
В
D
Please help will give brainliest!!!!!!!
С
Answer:
B and C
Explanation:
B is the chloroplast where light is captured for photosynthesis. C is the cell wall which gives the plant support and structure. Animals don't do photosynthesis and we have skeletons for support so we don't need these structures.
Dogs can inherit four features: fur pattern, fur length, ear length, and tail length. The alleles are expressed as shown:
Dominant alleles
Recessive alleles
F: spotted fur
f: solid-colored fur
L: long fur
1: short fur
E: long ears
e: short ears
T: long tail
t: short tail
Two dogs mate and have puppies. Both parent dogs are heterozygous for spotted fur. Fill in the Punnett square to show the potential outcomes of this cross.
dropping the letters)
On
When both parents heterozygous for spotted fur are mated with each other, they have offspring with genotypes FF, Ff, Ff, and ff.
What is Allele?An allele may be defined as one or two or more alternative forms of a gene that describes a specific character.
The Punnett square of the mentioned cross is given below:
Therefore, it is well described above.
To learn more about Punnett square, refer to the link:
https://brainly.com/question/3522181
#SPJ1
Explain why the barn owl is considered a keystone species
Answer:
bc it can help rats stay away and scares other animals
Explanation:
thank me later
A researcher studying handwashing uses guidelines set by the American Society of Microbiology to determine if handwashing has taken place: use warm or hot running water and soap while washing for 10 to 15 seconds all surfaces, including wrists, palms, backs of hands, and under fingernails. This guideline is considered a. the Hawthorne effect. b. an operational definition. c. a correlation. d. a test.
Answer:
The correct answer is b. an operational definition.
Explanation:
An operational definition constitutes the set of procedures that describe the activities that an observer must carry out to receive sensory impressions, which indicate the existence of a theoretical concept to a greater or lesser degree. In this sense, it tries to clearly indicate how the variables are going to be manipulated or measured and also indicates that to measure a variable, it is necessary to carry out a series of activities or procedures. It is the one that builds or adapts from others, based on the observable characteristics of the phenomenon; indicating the concrete, empirical elements or indicators of the fact to be investigated.
1. Which best describes an organ system?
A. It is made up of similar cells.
B. It is made up of similar tissues.
C. It is made up of different organs
D. It is made up of different organism.
2. Which of the following is composed of tissues that come together to perform a specific function?
A. Cell
B. Organ
C. Organ system
D. Organism
3. Which of the following is a group of similar cells that perform a particular function?
A. Organ
B. Organ system
C. Tissue
D. Organism
4. What is the simplest level of organization in a organism?
A. Organ
B. Organ system
C. Tissue
D. Cell
5. An organ system is a group of organs which _____.
A. Are made of similar cells
B. Are made of similar tissues
C. Is a specific part of the body
D. Work together to perform interrelated function
Answer:
1. C Made of different organs
2. B Organ
3. C Tissue
4. D Cell
5. D Work together
A mother and father both have brown eyes, but their child has blue eyes. Which statement most likely explains this
Answer:
Blue eyes is a recessive trait
Explanation:
Recessive traits show in 25% of the offspring, but they skip the first generation. This means that the 25% only shows up in the second generation unless two recessive traits are put together. A likely combination is that both of the parents had Bb, which you can put into a punnet square to visualize.
B b
B BB Bb
b Bb bb90
In Labrador retrievers some puppies have pink noses and some have black. Labrador retrievers with black fur almost always have black noses. What type of inheritance pattern is this? Explain how this is possible.
The German physician Rudolf Virchow used a microscope
to observe cells splitting in two, as shown in the photo.
Answer:
D
Explanation:
Virchow's work is based off of that living things cannot exist without there being previous living things. Therefore, it has to be D because all new cells must come from currently living cells
The new field of study that has resulted from the human genome is
Answer:
The Human Genome Project
Explanation:
What is the advantage of graphic scientific data?
Answer:
Advatages below
Explanation:
• visual representation of their results
• influence the public
a. visually driven society
b. when looking at a graph of experimental results,
always ask yourself if the researchers have an ulterior
motive
H20 and O2 are examples of.
Atoms, molecules, droplets
Or water
Answer:
molecules because an water would just be H20, an atom would just be oxygen or hydrogen on its own, and droplets also refer to just liquid which oxygen is not
3. The cooling rates of igneous rock determine which of the following?
a. the number of igneous rocks that form
b. the size of the crystals that form in the rock
C. cooling rates are not used in determining igneous rocks
d. both the number of igneous rocks that form and the size of the crystals that form within the rocks
Answer:
1. B
Explanation:
mark me as brainliest
in this drawing, witch layer of rock is the oldest?
Answer:
the thrid one
Explanation:
Explain the role of certain plant cells in flood control
Answer:
To absorb water to lowers the intensity of flood.
Explanation:
The main role of certain plant cells in flood control is to absorb water as well as the decrease the flow of water which slower down the intensity of flood. There are some plants in which their cells absorb huge amount of water which decreases the amount of water in the flood and as a result flood water decreases so that's why vegetation is very important in order to avoid flooded condition.
What happens after activation of T cells
Answer:
Helper T cells are arguably the most important cells in adaptive immunity, as they are required for almost all adaptive immune responses. They not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells.
Explanation:
Helper T cells become activated when they are presented with peptide antigens by MHC class II molecules, which are expressed on the surface of antigen-presenting cells (APCs). Once activated, they divide rapidly and secrete cytokines that regulate or assist the immune response.