Answer:
Do you have the options?
4. In some plants it's pollen and ovum. In people it's sperm and eggs. They can also be
spores in the fungi kingdom. Sex cells can come in many forms, so biologists use the
general term
for these cells.
a. stems
b. diploidic
c. spores
d. gametes
What two diseases have been studied together that provide evidence of evolution in
humans?
A)malaria and ebola
B)sickle cell anemia and malaria
C)cytochrome c disease and plasmodium fever
D)iron-deficient anemia and yellow fever
Answer:
sickle cell anemia and malaria
Explanation:
Scientists believe the sickle cell gene appeared and disappeared in the population several times, but became permanently established after a particularly vicious form of malaria jumped from animals to humans in Asia, the Middle East, and Africa.
The two diseases have been studied together that provide evidence of evolution in humans is sickle cell anemia and malaria.
What is sickle cell mutation?
The sickle cell mutation is relevant to malaria because infection of a red blood cell with the malaria parasite leads to hypoxia. In individuals of the AS genotype such blood cells sickle and are then eliminated by macrophage cells of the body’s immune system, lessening the burden of infection (Luzzatto, 2012). Carriers of the sickle cell trait are particularly resistant to severe malarial episodes; they are less resistant to mild cases. The mechanism by which carriers are protected from malaria is different than the acquired immunity that both AA and AS individuals achieve following repeated exposure to the disease.
The benefit that possessing a single copy of the sickle cell gene conveys counterbalances the biological cost incurred when homozygous SS children are stricken with sickle cell disease. An individual of the AS genotype is more likely to reach adulthood than is an individual of the AA genotype, but the former is also more likely to see his/her child die of sickle cell disease. This is known as a heterozygote advantage or balanced polymorphism. As shown more formally below, the stronger is the pressure of malaria on survival, the more advantaged are individuals who carry the S gene, and in equilibrium, the higher the percentage of the population who will be carriers. Indeed, it was the correlation of high prevalence of the sickle cell gene and the presence of malaria that first led scientists to understand the protective role of the sickle cell mutation (Kwaitkowski, 2005). As will be seen in the next section, the underlying genetic mechanism by which the sickle cell trait is transmitted provides a means of mapping sickle cell prevalence into an estimate of the mortality burden of malaria.
Learn more about cell mutation
https://brainly.com/question/17031191
#SPJ2
What organic molecule contains a carboxyl functional group and an amino functional group?
A. DNA
B. carbohydrate
C. lipid
D. protein
The basic amino group (NH2), the acidic carboxyl group (COOH) and the specific organic R group (or side chain) for each amino acid make up an organic molecule known as an amino acid. Thus, option D is correct.
What is Structure of protein?
The linear arrangement of amino acids within a peptide or protein constitutes its fundamental structure.
Conventionally, a protein's main structure is described from amino-terminal end to carboxyl-terminal end. Ribosomes in cells are most frequently responsible for protein production.
Peptide bonds are created when amino acids condense to form protein structures. The main structure of a protein is its arrangement of amino acids.
The dihedral angles of the peptide bonds determine the secondary structure, while the folding of protein chains in space determines the tertiary structure.
Therefore, a protein organic molecule contains a carboxyl functional group and an amino functional group.
Learn more about protein structure here:
https://brainly.com/question/14652022
#SPJ2
In the kool aid mixture, what must there be more of, hydrogen ions or hydroxide ions?
Answer:
hydrogen ions
Explanation:
it is an acid hence why it must contain more hydrogen ions.
Compare the exponential model and the logistic model of population growth. NEED FOUR SENTENCES
Answer:
When the resources are infinite (cyclic), the population exhibits exponential growth, resulting in a J-shaped curve ... In logistic growth, population expansion decreases with the scarcity of resources. It turns off when the carrying capacity of the environment is reached, resulting in an S-shaped curve.
It is possible to quickly determine the _____ of one mineral relative to that of another mineral with the process of ____
What is human fetal development? I need simple definition
Answer:
Fetal development is when many of it's organs become fully developed.
What molecule is used to find the direction of each DNA strand?
Answer:
5' to 3'
Explanation:
Answer:
Only the 5' to 3' path of DNA is synthesized. If you know the sequence of the template strand, you can figure out the complementary strand's sequence. Each base in one strand adheres to its partner in the other.
Explanation:
Hope this helps!
Please mark me as Brainliniest.
from the moment a message is sent to astronauts on the moon it take at least 3 seconds to reply because
Plz help
Answer:
its D) it takes time for electromagnetic radio waves to get to the moon because of its large distance from earth.
Explanation:
(I WILL MARK BRAINLIEST AND GIVE THANKS) QUESTION 1
DOK 2
What is another example of mechanical weathering?
SELECT AN ANSWER
a cliff getting worn away from the ocean
waves crashing against it
sulfur dioxide and nitrogen gases creating
acid rain
Lichen make a weak acid that dissolves
rock
carbon dioxide from the air dissolving in
rainwater, which hits the rock to make new
minerals, like clay
Answer:
the first answer I hope I helped you
Which statement provides evidence that mitochondria most likely evolved when a primitive eukaryotic cell engulfed a prokaryotic bacteria?
Answer:
Both mitochondria and bacteria have a circular DNA molecule
Explanation:
Answer:
Both mitochondria and bacteria have a circular DNA molecule.
Explanation:
I took the test
On topographic maps, circles inside circles like the map below represents:
a depression like a crater
a like or pond
a hill or mountain
a canyon or a valley
What is the worst kind of pollution? air pollution, water pollution, or land pollution? Defend your answer. (Please explain why you think it is the worst kind of pollution)
Thank you.
Answer:
i think air pollution
Explanation:
of course the other two pollutions are harmful but with air pollution the harmful chemicals are going straight into your respiratory system. this is why people in asia wear masks, there’s so many harmful chemicals in the air from the factories.
Given the following sequence of DNA, what molecules would be paired with it on the complimentary (replicated) side? A C G T C C G T A A T C
A wave along a guitar string has a frequency of 450 Hz and a wavelength of 3.5 meters.
Calculate
the speed of the wave. Show the formula and show your calculation.
Answer:
1575
Explanation:
speed = wavelength ×frequency
Our wavelength is 3.5 and our frequency is 450 we've been told to find the speed so we multiply the two which gives us 1575
Sandra has a houseplant sitting on her kitchen windowsill, where it receives a lot of sunlight.
What will most likely be the plant’s pattern of growth?
The cells on the shaded side of the plant will grow longer, causing the opposite side of the plant to grow toward the window.
The cells on the shaded side of the plant will shrink, causing the opposite side of the plant to grow toward the window.
The cells on the sunny side of the plant will grow longer, causing the shaded side of the plant to grow away from the window.
The cells on the sunny side of the plant will shrink, causing the shaded side of the plant to grow away from the window. complete sentences, explain the difference between the major economic activities of Western Europe and those of Eastern Europe.
Answer:
The cells on the shaded side of the plant will shrink, causing the opposite side of the plant to grow toward the window.
Explanation:
The cells on the shaded side of the plant will shrink, causing the opposite side of the plant to grow toward the window.
Hydrogen ions are released in the cells on the shaded side of the stem. As a result, the pH of the cells decreases that in turn activates expansins (an enzyme). This enzyme causes the opposite side of the plant to grow toward the window.
Drag Each Tile To The Correct Location On The Table. Classify the mutations as somatic or inherited
Answer: inherited: -exists in all the cells of the body
-transferred via egg and sperm cells
Somatic- skin cancer by uv
-Not passed on to offspring
-found in a specific cell
Type
Explanation: Plato
Que tedria de particular la retina de un animal que no pudiera diferenciar los colores cuya vision fuera exclusivamente en blanco y negro
Answer:
La falta de células cono en la retina
Explanation:
En vertebrados, la retina se encuentra formada por dos tipos básicos de células denominados células conos y células bastones. Las células cono son unas células fotosensibles las cuales forman una capa concentrada en el centro de la retina. Estas células (células cono) son responsables de la distinción entre diferentes colores del espectro de luz visible. Las células cono se clasifican en tres tipos de acuerdo a su sensibilidad para distinguir la luz azul, roja, y verde. Esta sensibilidad se debe a la presencia de diferentes tipos de proteínas opsinas, las cuales confieren la capacidad de absorber la luz en una longitud de onda particular: cianopsina (sensible a la luz azul), eritropsina (sensible a la luz roja) y cloropsina (sensible a la luz verde). Animales como los gatos y los perros son daltónicos, es decir, no pueden completamente diferenciar los colores, debido a la falta de una o más clases de células cono (y por lo tanto también de opsinas) en la retina.
I know it saids science but theres no option (please help)
Answer:
As the Moon orbits our planet, its varying position means that the Sun lights up different regions, creating the illusion that the Moon is changing shape over time. ... This is because it rotates once on its axis in exactly the same time it takes to orbit Earth – 27 days and seven hours.
Explanation: pleaseeee mark as brainliest
How can we stop the amount of emissions that contribute to greenhouse gases?
When a living thing changes in response to a change in seasons, it is called a ________.
A. Behavioral change
B. Physical change
C. Natural change
D. Seasonal change
Literally my idiotic sister insists on using my account to ask this-
Answer:
D. Seasonal change............. It legit says "change in seasons" in the question.
Can someone answer the question with a small paragraph please brainiest will be given
Answer:
There are so many ways that you can help save our oceans, many of which involve small changes in your day to day life. If we reduce our carbon footprint, limit plastics, avoid products that exploit marine life, and spread awareness we can make a difference. The ocean is vital to our existence, and we should treat it that way.
In 100 words or more, explain the role natural selection plays in causing biological resistance.
Plz help
Answer:
The ability of a microorganism to tolerate the effects of an antibiotic is known as antibiotic resistance. It's a certain kind of drug resistance. Antibiotic resistance develops naturally through random mutation, but it can also be engineered by putting a population under evolutionary stress. Bacteria will then transmit genetic information in a hominid-like manner once such a gene has been formed. Following the development of such a gene, bacteria may use plasmid exchange to transfer genetic information horizontally (between individuals). Multiresistant bacteria, also known as superbugs, carry several resistance genes. the reasons for it Transformation protocols can also be used to incorporate antibiotic resistance into a microorganism. This may be a good way to get artificial genes into a microorganism. Antibiotic tolerance is a product of natural selection in evolution. Antibiotic activity is a type of environmental pressure; bacteria that have developed a mutation that allows them to survive will continue to replicate. They will then pass this trait on to their children, resulting in a generation that is completely immune.
Explanation:
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!
Answer:
Schwann - animals are made of cells
Virchow - cells divide
Schleiden - plants are made of cells
Hooke - recognized living cells
Leeuwenhoek - observed cells and coined the term "cell"
Brainliest please! :)
Please only respond if you know the answer. Also, links will be reported
Answer:
A. They would no longer be able to photosynthesize because carbon dioxide is a reactant in the process.
Explanation:
Carbon dioxide is needed for plants to photosynthesize to be able to exchange gases as they will take in carbon dioxide from the atmosphere and give out oxygen into the surroundings.
Select the correct answer.
Around which location is the supermassive black hole situated in the nucleus of our galaxy?
A.
Sag B*
B.
Centaurus A
C.
Sgr A*
D.
Fornax A
Answer:
Option C is the right answer
Help!
Anteaters have sticky tongues to help them catch insects.
What type of adaptation is this?
A. Learned
B. Structural
C. Respiratory
D. Behavioral
Answer:
B (Structural)
Explanation:
They are born with their tongue.
Finn listed two of the three steps involved in gene therapy. 1. The normal allele is removed from the chromosome. 2. The normal allele is added to the cells of a person with the disorder. Which step should he also include, and where?
Answer:
The unhealthy gene sequence is cut from the DNA before 2
Explanation:
Gene therapy refers to genetic engineering techniques aimed at introducing exogenous nucleic acids (either DNA or RNA) into the patient's cells in order to restore gene function. Gene therapy techniques hold a great promise to treat genetic diseases and disorders. Gene therapy may involve replacing defective genes with a functional copy of the gene of interest within the desired cells. For this purpose, it is required to use a DNA-specific damaging agent to knock out the defective gene and subsequently restore normal gene function by inserting a functional gene sequence into the recipient cells. Gene therapy techniques can be divided regarding target cells into 1-somatic gene therapy, where genetic modifications are applied on somatic body cells (and therefore they are not inherited by offspring), and 2-germinal gene therapy, where genetic modifications are applied on germinal cells (i.e., gametes) or undifferentiated stem cells (and therefore genetic changes may pass to the following generations).
Answer:
The unhealthy gene sequence is cut from the DNA before 2
Explanation:
how can you add a normal one if one is still infected it would be pointless not to take it out
4. What is 6CO2 + 6H0+ light energy = CH120 + 60?
Answer:
Photosynthesis
Explanation:
It shows the process of photosynthesis where Carbon (IV) Oxide reacts with water in the presence of light to produce carbohydrates and oxygen gas
Which part of the brain keeps you from losing your balance when you are standing on a skateboard?
