organsim:
an individual animal, plant, or single-celled life form.
"fish and other organisms have been destroyed over large areas of the creek"
population:
In biology, a population is a number of all the organisms of the same group or species who live in a particular geographical area and are capable of interbreeding.
communtiy:
a group of people living in the same place or having a particular characteristic in common.
"the scientific community"
ecosystem:
a biological community of interacting organisms and their physical environment.
"the marine ecosystem of the northern Gulf had suffered irreparable damage"
biome:
a large naturally occurring community of flora and fauna occupying a major habitat, e.g. forest or tundra.
biosphere:
the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms.
Which of the diagrams best represents the structure of the nervous system
Can you help with essays
What is the essay’s theme?
Before a cell divides, the DNA is checked to make sure it replicated correctly. This
piece of DNA is an exact copy of the DNA from which it came. When the parent cell
divided to create two cells, the cell's DNA also divide creating two identical copies of
the original DNA. What will happen if the DNA does not copy itself correctly?
Answer:
the cell will die
Explanation:
its chromosomes, an enzyme called cyclin dependent kinase, or CDK, will not activate the cyclin, and the cell cycle will not proceed to the next phase. The cell will undergo cell death
I’ll mark brainiest if right
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer: A) The 2 different ecosystems of green and brown plants
Explanation:
This is the independent variable because it will change the dependant variable of which how many brown and green beetles survive.
I hope this helped!
<!> Brainliest is appreciated! <!>
- Zack Slocum
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
PLEASE HELP ME What do all animals, including vertebrates and invertebrates, have in common?
Question 1 options:
They have backbones, internal skeletons, and muscles.
They are heterotrophs that must get their food from plants or other animals.
They have lungs or gills for breathing.
They are endothermic (warm-blooded).
Answer: They are all heterotrophs I believe.
Explanation:
What structures act as filters to trap pathogens and damaged cells as lymph flows through them?
Answer:
Spleen
Explanation:
The is because the spleen is an organ found in upper section of the abdomen spleen acts as a filterand it help to remove old and damaged cells . It also play a major role in controlling the amount of blood and blood cells that move round the body. The spleen also helps remove pathogens. It contains white blood cells called lymphocytes and macrophages.
3. Why is it important to know the customers preference on the product?
Why is stem cell research important within the field of medicine?
PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer:
I think it is B
Explanation:
Im sorry if i am wrong
How many kidneys are in the average
adult human?
Answer:
Two kidneys
Explanation:
Most people have two kidneys, however, it is possible to live a healthy and active life with only one functioning kidney.
Explain why one city receives 10 hours more light each day.
Explain your answer
Answer:
i hope it will help u bestie
Explanation:
Each year, many people look forward to the winter solstice, which usually falls on December 21 and is the shortest day of the year, because they know after that, there will be progressively more daylight each day.
Nick made the chart below to show the future impact of four energy production
technologies on the environment.
Tidal
Power
Current
power
Increase
in severe
Impact on weather
environment.
For which of these energy production technologies did Nick write a correct future
impact on the environment?
A. Current Power
B.tidal power
C. Wave power
D. Ocean thermal energy
Answer: Tidal Power
Explanation: correct on test
Summer is coming and we are ready to get out and get in the sun. However, sun light has some ultraviolet light. When a UV photon is absorbed by a molecule of DNA, there are different ways the energy can be absorbed. One of the ways is that the energy of the photon can be converted into vibrational energy of the molecular bonds. Excessive vibration can damage the molecule by causing the bonds to break. UV light of less than 290 nm causes significant damage to DNA and UV light of longer wavelength causes minimal damage. What is the threshold photon energy, in eV, for DNA damage
Answer:
The threshold photon energy for DNA damage = 4.28 eV
Explanation:
According to the Planck - Einstein's equation, the energy of a photon, E is proportional to its frequency; E = hf where f is frequency and h is Planck's constant.
Also, frequency, f = velocity /wavelength
f = c/λ where c is the velocity of light
E = hc/λ
h = 6.63 × 10^-³⁴ Js;
c = 3.0 × 10⁸ m/s;
Threshold wavelength, λ = 290 nm = 2.9 × 10^-7 m
E = (6.63 × 10^-³⁴ × 3.0 × 10⁸) / 2.9 × 10^-⁷
E = 6.85 × 10^-¹⁹ J
1 ev = 1.602 × 10^-¹⁹ J
6.85 × 10^-¹⁹ J = 6.85 × 10^-¹⁹ J × 1 eV / 1.602 × 10^-¹⁹ J = 4.28 eV
Therefore, the threshold photon energy for DNA damage = 4.28 eV
Which human activity is correctly paired with the greenhouse gas that it increases?
A)rice cultivation and water vapor
B)landfilling and carbon dioxide
C)deforestation and methane
D)sewage treatment and nitrous oxide
The answer is (D) now on edge 2021
Answer:
the answer for ur question is D
what is another name for environmental science?
Jenny has red hair and freckles. We know that non-red hair (R) is dominant to red hair (r), and that freckles (F) are dominant to plain skin (f). She tells you that her mom has brown hair and freckles, and that her dad has red hair and plain skin. Furthermore, she says that her maternal grandmother (her mom’s mom) had red hair and plain skin. What is Jenny’s genotype?
Hello Milan!
Answer:
rrFf
Explanation:
In this question, we’re talking about two traits, which means that we will represent their genotypes with four letters ( two letters for each trait, since one trait is present in two chromosomes -pair-, one from the mother, and one from the father, revise if you don't get it, or just ask me).
First, let’s make everything clear:
Capital letters are for dominant traits (if one dominant trait is present in the genotype, it will be shown as the phenotype of a person)
Small letters are for recessive traits (if both chromosomes have the recessive trait, it will be shown as the phenotype)
( one letter = one allele )
R : not-red hair r : red hair
F : freckles f : plain skin
Second, let's write down every possible genotype for each person:
Let's start with Jenny, she has a recessive trait (red hair) and a dominant trait (freckles). As I mentioned before, we will represent recessive traits in two small letters ( rr for Jenny's red hair ). And in the case of our dominant trait ( freckles), we MUST have at least one capital letter (for this trait: F ). That means we have two possible genotypes for freckles: either Ff or FF.
Now as easy as it sounds, we should write Jenny's possible genotypes like this:
Either rrFf or rrFF
Jenny's mother has brown hair and freckles (two dominant traits), again, as I mentioned before, dominant traits MUST be represented by at least one capital letter.
Possible genotypes for brown hair:
either RR or Rr
Possible genotypes for freckles:
either FF or Ff
Here, we have the phenotype of one parent of Jenny's mother's parents. Lucky for us, Jenny's grandmother has two recessive traits that can only be presented as rrff.
Why are we lucky? Because Jenny's mother must have inherited one allele of her grandmother, since both of Jenny's grandmother's alleles are the same, we know that Jenny's mother has one r allele and one f allele. We can write down Jenny's mother's genotype like this: RrFf.
Now I ask you to stop reading and try to figure out Jenny's father's genotype.
It is rrff, just like her grandmother.
Finally, let's make a Punnett square for Jenny's genotype:
mother: father:
RrFf x rrff
( I'm not gonna show you how to make a Punnett square because that's gonna be a tooooooo long explanation, watch this video: https://youtu.be/qIGXTJLrLf8 )
possible genotypes for Jenny and her siblings:
RrFf (phenotype: non-red hair & freckles)
or Rrff (phenotype: non-red h & plain skin)
or rrFf (phenotype: red h & freckles)
or rrff (phenotype: red h & plain face)
If Jenny has red hair and freckles, she MUST have a genotype of rrFf. If not, her mother is cheating XD (or a genetic mutation had happened).
I know I took too long explaining and answering but I hope I helped you,
keep it up!!
The correct genotype Jenny would be - rrFf .
The information we have in this question is:
non-red hair (R) is dominant to red hair (r),freckles (F) are dominant to plain skin (f).dad has red hair and plain skinmom has brown hair and freckles,Jenny has red hair and frecklesmaternal grandmother had red hair and plain skinLet find the genome of her maternal grandmother:
Her maternal grandmother had red hair skin which is a recessive trait and plain skin which is also a recessive trait that means she must have both recessive alleles for each trait as recessive allele express itself in the absence of dominant allele
The genotype of maternal grandmother: rrff
Let find the genome of the mother:
Mother has brown hair and freckles and brown hair is only present in heterozygous conditions if R allele is present with r allele however, Freckles can be in two conditions FF or Ff. The mother of jenny's mother has rrff then she must carry one f allele which concludes that Jenny mother has Ff.
The genotype of mother: RrFf
Let find the genome of her father:
Her father has red hair and plain skin and as we explained that both are recessive traits then the genotype of her father would be - rrff
Finally, the genotype of jenny can find out by the cross between the genotype of her parents:
(see image for cross)
The genotype of Jenny would be rrFf as red skin is a recessive trait that is only possible with two recessive alleles and for the freckles, there are two possible conditions, Ff and FF that can find out by crossing given in the image.
Thus, the genotype of Jenny is - rrFf
Learn more about alleles:
https://brainly.com/question/14104138
A mutation in Connexin 46 causes a rare autosomal dominant human condition (pediatric cataracts)
a. True
b. False
Take any two words and connect them to form a sentence about photosynthesis.
____________ and ___________ go together because_______________________.
Terms:
Calvin Cycle
Carbon Dioxide
Chlorophyll
Chloroplast
Glucose
Leaf
Light
Light Dependent Reaction
Light Independent Reaction
Oxygen
Photosynthesis
Pores
Product
Reactant
Root
Starch
Sun
Water
Answer:
Solution:
plant's takes carbon dioxide ,water ,sunlight,and minerals and produce glucose and excrete out oxygen:
Two genes, CaM and BMP4, control beak ____________ and ____________ , respectively, in finches. High levels of CaM expression will result in ____________ beaks, whereas low levels of CaM expression will result in ____________ beaks. High levels of BMP4 expression will result in ____________ beaks, whereas low levels of BMP4 expression will result in ____________ beaks. Therefore, the degree of expression and, consequently, the amount of ____________ produced, affects beak development in utero. Therefore, small changes to the ____________ within a developing embryo could result in the formation of new species, providing both evidence and a mechanism for ____________ .
Answer:
1. Beak shape and depth
2. Long beaks; short beaks
3. Tall beaks; shallow beaks
4. Protein
5. Genes; macroevolution
Explanation:
Two genes, CaM and BMP4, control beak shape and depth, respectively, in finches. High levels of CaM expression will result in long beaks, whereas low levels of CaM expression will result in short beaks. High levels of BMP4 expression will result in tall or deep beaks, whereas low levels of BMP4 expression will result in shallow beaks. Therefore, the degree of expression and, consequently, the amount of protein produced, affects beak development in utero. Therefore, small changes to the genes within a developing embryo could result in the formation of new species, providing both evidence and a mechanism for macroevolution .
Note:
The BMP4 gene is the gene for Bone morphological protein 4. It determines how deep or tall the beak will be.
The CaM gene is the gene for Calmodulin. It regulates how long a beak will grow.
If nondisjunction occurs during meiosis II, how many of the daughter cells will have an incorrect number of
chromosomes?
Micro arthropod is
(a) Scabies mite
(b) spirogyra
(c) Amoeba
(d) Yeast
Answer:
Scabies Mites are Micro Arthopods
Please help me understand what I did wrong, Thanks
I I am really really confused about these two questions does anybody know the answer to both of them
Answer:
1) Topographic maps show contours, elevation, forest cover, marsh, pipelines, power transmission lines, buildings and various types of boundary lines such as international, provincial and administrative, and many others. (Answer: Elevation)
2) Contour line, a line on a map representing an imaginary line on the land surface, all points of which are at the same elevation above a datum plane, usually mean sea level. The diagram illustrates how contour lines show relief by joining points of equal elevation. (Answer: Contour Line)
Where in the female reproductive tract does fertilization of the egg occur?
Which one ??????????
An isometric exercise is one in which the joint angle does not change during the application of muscle force. For instance, you can join your hands together, pushing down with one hand and pushing up with the other. In each arm, the muscles that provide the force are connected to the bones of the arm by tendons. If you increase the forces but keep the angles the same, the muscles will still contract. Explain how this is possible.
2. A certain recessive, lethal gene is carried on the X chromosome. (Lethal genes are those that result in death.) A man marries a woman who is hybrid for this gene. What sex ratio would be expected among the living children of this couple?
%Male
%Female
Please help me im stuck!
In the liver, excess amino acids are broken down into ____________ and rapidly combine with ____________ to produce urea, which is much less toxic to cells.
Answer:
In the liver, excess amino acids are broken down into ammonia and rapidly combine with carbon dioxide to produce urea, which is much less toxic to cells.
Explanation:
The correct answer to the given quested about Urea Cycle is Ammonia and Carbon dioxide respectively and the complete statement will be "In the liver, excess amino acids are broken down into Ammonia and rapidly combine with Carbon Dioxide to produce urea, which is much less toxic to cells."
What do you mean by Urea Cycle?The urea cycle, commonly referred to as the ornithine cycle, is a series of metabolic processes that converts ammonia into urea (NH2)2CO (NH3).Highly poisonous ammonia is transformed into urea by rapidly combining with carbon dioxide via the urea cycle for elimination. Five years before the TCA cycle was found, this cycle was the first to be identified as a metabolic process. Later, Ratner and Cohen provided a more thorough explanation of this cycle.Thus we can conclude that in the liver, excess amino acids are broken down into Ammonia which is highly toxic to cells and that ammonia rapidly combine with Carbon Dioxide to produce urea, which is much less toxic to cells.
Learn more about Urea Cycle here:
https://brainly.com/question/13063788
#SPJ2
Which is the main function of the respiratory system?
1. to protect the internal organs
2. to help oxygen get into blood vessels
3. to push blood to all parts of the body
4. to protect the body from illness
Use a Punnett square diagram to show why, for each pregnancy, the chances of giving birth to either a boy or a girl are 50-50. Explain the results shown in your diagram.
Answer:
Because the offspring of a male and female are always going to be xx, xx, xy, or xy.
Explanation:
Remember that men have different reproductive chromesomes than women. Women have 2 x chromesomes(xx) while men have 1 x and 1 y(xy). These are given down to their offspring.
So we can write the this out in a punnet square as(link down below).
After you see the visual, you will find that the genotypes are xx, xx, xy, xy.
As I said above, women have sex chromesomes xx, while men have sex chromesomes xy. When you match the genotypes on the punnet square with the ones we know from men and women, we find that two of them match with men and two match with female.
So with this, we can conclude that 2/4 of offspring will always be male and 2 will be female. And as you well know 2/4 is 1/2 which is 50%.