State two reasons why the fetal blood must not mix with the maternal blood?
Answer:During pregnancy, red blood cells from the unborn baby can cross into the mother's blood through the placenta. If the mother is Rh-negative, her immune system treats Rh-positive fetal cells as if they were a foreign substance. The mother's body makes antibodies against the fetal blood cells
Explanation:
erythropoietin is a hormone produced by the _______________ to increase the rate of production and maturation of erythrocyte progenitor and erythroblast cells.
Answer: Kidneys
Explanation:
Both the kidneys and the liver produce erythropoietin. If only one answer is allowed, I would choose kidney because it produces nearly 85 percent of it.
what are the functions of the kidney
What can you conclude about two thermometers, one which is at 25 ˚C and the other which is at 20 ˚C?
SELECT AN ANSWER
A- The kinetic energy of the 20 ˚C thermometer is greater than the kinetic energy of the 25 ˚C thermometer.
B- The particles in the 20 ˚C thermometer are moving faster than in the 25 ˚C thermometer.
C- The particles in the 25 ˚C thermometer are moving faster than in the 20 ˚C thermometer.
D- Both thermometers have particles moving at the same speed.
SUBMIT
0%
which particles cannot pas through the cell membrane
Answer:
glucose, charged particles
Explanation:
what is an example of a prokaryote that does binary fission?
Answer:
Prokaryotes such as E. coli, Archaea as well as eukaryotes such as euglena reproduce through binary fission. Binary fission is a form of cell division in eukaryotes. In prokaryotes, it is a form of asexual reproduction Binary Fission in Bacteria
Explanation:
the use of dna information to direct the production of particular proteins is called
Answer:
translation is the use of dna information to direct the production of particular proteins
Please help serious answers only
Answer:
venus
Explanation:
How is atmospheric carbon in the form of CO2 converted into a molecule that
is usable to all organisms?
A. By combustion of fossil fuels
B. By the decomposition of dead and decaying matter
C. By production of ATP through cell respiration
D. By the making of glucose through photosynthesis
WILL MARK BRAINLIEST
Answer:
D. By the making of glucose through photosynthesis
Explanation:
Photosynthesis is a chemical reaction that results in glucose. One of the reactants is CO2. So, the plants take in CO2, water, and sunlight. This produces oxygen and glucose. This is part of the carbon cycle and is the way that CO2 becomes usable for consumers.
how can different amino acids affect secondary structure
Answer:
Exposure to positively charged amino acids (arginine and lysine) is found to clearly stabilize the secondary structure. Kinetically, each amino acid promotes folding by generating a large increase in the folding rate with little change in the unfolding rate.
Why isnt there a solar eclipse during every new moon?
Answer:
Eclipses do not happen at every new moon, of course. This is because the moon's orbit is tilted just over 5 degrees relative to Earth's orbit around the sun. For this reason, the moon's shadow usually passes either above or below Earth, so a solar eclipse doesn't occur.
Explanation:
Make this in own words if it's for a test or smth
Explanation:
Solar eclipse don't happen every new moon, because the moon's orbit tilted over degrees relative to the earth's orbit around the sun. The moon's shadow usually passes either above or below earth, so therefore that is the reason a solar eclipse does not occur every new moon
Photosynthesis requires light, water, carbon dioxide, and light absorbing
______.
Answer:
To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight. By taking in water (H2O) through the roots, carbon dioxide (CO2) from the air, and light energy from the Sun, plants can perform photosynthesis to make glucose (sugars) and oxygen (O2).
Explanation:
I didt really understand your question.
Answer:
chlorophyll
Explanation:
During light reaction, the chlorophyll entraps light and the solar energy is converted into chemical energy in the form of ATP molecules.
how do I write the equation P^2 = kA^3, so that I'm solving for the variable K?
Answer:
k = (P^2)/(A^3)
Explanation:
Step 1: Flip the equation.
[tex]kA^3 = P^2[/tex]Step 2: Divide both sides by A^3.
[tex]\frac{kA^3}{A^3} = \frac{P^2}{A^3}[/tex] [tex]k = \frac{P^2}{A^3}[/tex]Therefore, the answer is [tex]k = \frac{P^2}{A^3}[/tex].
In Tehran v US ex.rel. Shott (1966), the US Supreme Court said the purpose of a trial was to
Answer:
to determine the truth.
an individual with a antigens on their rbcs but no b antigens has which abo blood type?
Answer:
BLOOD TYPE O
Explanation:
The ABO Blood Group
People can also have both A and B antigens on their erythrocytes, in which case they are blood type AB. People with neither A nor B antigens are designated blood type O.
How do prions make more of themselves?
how does frshwater ecosystems help with flood conrol
Answer: In terrestrial ecosystems the presence of vegetation in floodplains and watersheds can reduce the occurrence and severity of flooding by slowing water flows, enhancing percolation and storage, and allowing gradual release of water, thereby maintaining base flows and reducing peak flows.
Explanation:
one of the most common chromosomal disorders is ________ in which a baby has ________________.
Answer:
One of the most common chromosomal disorders is Down syndrome. Down syndrome happens when abnormal cell division results in extra genetic material from chromosome 21, too few chromosomes, or part of a chromosome may be missing. The difficulties of Down syndrome include hearing and vision weakness, weak auditory memory, fine motor skill impairment, short attention span with distractibility. Having Down syndrome can increase the risk of developing Alzheimer's disease. Having down syndrome can be associated with other health conditions such as ear infections, dental problems, endocrine problems, and seizures.
Does hot water tend to rise or sink? Explain.
Answer:
When fluids (liquids and gases) are heated, they expand and therefore become less dense. Any object or substance that is less dense than a fluid will float in that fluid, so hot water rises (floats) in colder water.
Explanation:
When you heat up water, the water molecules start moving around faster and faster. ... So hot water is less dense than cold water. When you put the two together with the hot water on the bottom, the hot water rises to the top.
Please mark me as brainlist if it is helpful.
Meaning of:
1. Plant Stranglers.
2. Ammonification
3.Nitrification
Answer:
1. Plant strangers; named for their pattern of growth upon host trees, which often results in the host's death. example includes strangers fig
2. Ammonification refers to chemical reactions in which amino groups (NH2) associated with organic forms of nitrogen are converted into ammonia (NH3) or ammonium (NH4+).
3. Nitrification is the step in the nitrogen cycle that links the oxidation of ammonia (produced from the degradation of organic matter) to the loss of fixed nitrogen in the form of dinitrogen gas.
Explanation:
Sorry some of the answer are from internet but please mark brainliest
NEED ASAP PLEASE
Explain the difference between microscopic and macroscopic protozoa.
Answer:
Microscopic organisms can be seen only under the magnification(microscope) whereas macroscopic can be visible by naked eye.
Explanation:
How do plants control homeostasis?
Answer:
it happens with they mind bro
Answer:
Angiosperms or flowering plants maintain homeostasis by keeping their stomata (opening in the underside of a leaf that allows carbon dioxide to diffuse into and out of the leaf) open just enough to allow photosynthesis to take place but not so much that they lose an excessive amount of water.
please give brainliest
When a biological vector is used, which process is used to ensure there are large amounts of DNA?
cloning
electrophoresis
genetic engineering
gene isolation
Answer:
*CLONING
Explanation:
it makes the most sense
Write 2-3 complete sentences to describe the government in United States
Answer:
The United States government is a constitutional, federal republic composed of three branches: legislative, executive, and judicial. Each branch has its limitations of powers and responsibilities to ensure that citizens have their rights protected and that the government is successfully working.
Explanation:
Which of the following is a common characteristic of prokaryotic cells? Select all that apply.
A. plasma membrane
B. nucleus
C. flagella
D. cell wall
Nucleus is an exception in a prokaryotic cell. Thus, option A, C and D are correct.
What are the characteristics of a prokaryotes?Prokaryotes are microscopic and primitive cells. Their nucleus is not well developed.
Prokaryotes lack cell organelles like mitochondria, endoplasmic reticulum, Golgi body etc in their cell structure.
Prokaryotes are simple in assembly and are therefore unicellular. A single cell performs all the functions in the body.
Prokaryotes have single chromosome present in their structure. Their DNA is found in the cytoplasm.
Prokaryotes have cilia and flagella for locomotion.
Prokaryotic organisms are found extensively everywhere on earth. They have unique ability to survive in the harsh environments.
Prokaryotes are beneficial in many ways:
Carry out nitrogen fixation.Important for human gut for the absorption of vitamin B12.Helpful in fermentation process.Important in bioremediationTherefore, prokaryotes are important in many ways to the ecosystem.
Learn more about prokaryotes, here:
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An atom that has twelve protons in its nucleus has an atomic number of:
24
13
12
none of the above
Answer:
Protons-12, Electrons-12, Neutrons-12
Answer
12 would be the correct answer
a deposit of plaque on or within the arterial wall is known as a/an:
Answer:
Atherosclerosis
Explanation: It is a condition characterized by the formation of fatty plaques on the inner walls of the arteries
If a mutation occurs during the dna replication process of an intestinal cell undergoing mitosis then predict the most likely outcome
HELP!
Of the following, what is the most important for ATP production?
A) amount of sunlight
B) carbon dioxide
C) concentration water concentration
D) glucose concentration
E) oxygen concentration
Answer:
I THINK ITS A
im not sure tho
how long is evaporated milk good for after expiration date
Answer:
it's not...throw it away