The sentence that describes antigen as "proteins that are found on the plasma membrane which determine the blood type of erythrocytes" is: False.
What is an Antigen?An antigen is a substance that when introduced into the body evokes an immune system response. They activate the white blood cells by making them fight against any invading disease in the human body.
So, the description of antigens above is false.
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What is the main cause of urban migration in the United States?
a.
Rural communities are no longer necessary.
b.
Urban dwelling provides better access to goods, services, and jobs.
c.
Urban communities reduce human impact on the environment.
d.
Rural communities are unable to support life in the long-term.
Answer:
b
Explanation:
because jobs are available and a better life is guaranteed too
What are the rules for writing a hypothesis?
Scientific inquiry is driven by a scientist’s
creativity.
professionalism.
ethics.
perseverance.
Answer:
perserverance
Explanation:
they want to find out whats happening through inquiry and experiments.
What set the stage for wind erosion in North America
Answer:
Wind erosion in the United States is most widespread on agricultural land in the Great Plains states. Wind erosion is also a serious problem on cultivated organic soils, sandy coastal areas, alluvial soils along river bottoms, and other areas in the United States.
The diagram shows two cells. Identify structures C, D, and E and explain how they work together to perform a specific process within the cell.
Structure C, D, and E in the diagram represent the endoplasmic reticulum, the ribosome, and the Golgi apparatus respectively.
When the ribosomes are attached to the endoplasmic reticulum, they give it a rough appearance.
The ribosome, endoplasmic reticulum, and the Golgi apparatus work together in the synthesis and transport of protein within the cell. In other words, they are all involved in the secretory pathway of cells.
The ribosome represents the actual site of protein synthesis.The endoplasmic reticulum gets involved by folding the synthesized proteins and packaging them into secretory vesicles. Thereafter, the vesicles are transported to the Golgi apparatus.The packaged proteins undergo further processing within the Golgi apparatus before they are exported to the cell membrane via the cytosol.In other words, the 3 organelles work together to form the secretory pathway of the cell. They are involved in the synthesis, packaging, processing, and eventual transport of proteins to their target sites.
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what are the advantages and disadvantages of both asexual and sexual repoduction
?
Answer:
Asexual Reproduction advantage: Time Efficient; no need to search for mate, requires less energy.
Asexual Reproduction disadvantage: No variation - if the parent has a genetic disease, offspring does too.
Sexual Reproduction advantage: Variation, Unique, organism is more protected.
Sexual Reproduction disadvantage: Requires two organisms, requires more energy.
Explanation:
Hope this helps :)
How do scientists determine the relative age of a rock or fossil
Answer:
they use carbon 14 which has a half life of 5730 years
define the purpose for the field of biology
biology is a branch of science that deals with living organisms and their vital processes.
Answer:
As a field of science , biology helps us understand the living world and the ways its many species (including humans ) function, evolve, and interact. advances in medicine , agriculture , biotechnology, and many other areas of biology have brought improvements in the quality of life
the blank is anterior to the blank
What is the definition of wavelength
Answer:
The wavelength is the distance between 2 crests or troughs
(crests and troughs are the maximum upwards and downwards displacement from the equilibrium). Another way to phrase this is the length of one complete wave cycle.
(:
Which statements explain why rocks weather at different rates
Answer:
Rainfall and temperature can affect the rate in which rocks weather. High temperatures and greater rainfall increase the rate of chemical weathering. 2. Rocks in tropical regions exposed to abundant rainfall and hot temperatures weather much faster than similar rocks residing in cold, dry regions.
identify clues you would look for to judge whether a claim is based on science or pseudoscience
Answer:
replication of results, peer view, and proofs obtained from a lot of ...
Explanation:
SOMEONE WHOS GOOD AT SCIENCE I BEG U HELP. ILL GIVE U A LOT POINTS. Fill in/ answer as many from the pic as u can, pls don’t guess!! Number them pls
Answer:
can you snap the picture again and please make it straight when snapping, maybe I can help you
Answer:
please take another photo
Explanation:
Can you observe cells with the naked eye? Explain.
Answer:
No
Explanation:
According to science, human beings can't observe cells and other tiny organisms with our naked eyes coz our eyes aren't strong enough to observe but we can use a microscope which has strong lenses.
As cell is a tiny microscopic structure, it can be visible under microscope only.
what are the types of cell ?Cell is the basic unit of any living organism, can be observed in animal, plant, microbes etc; Bacteria are unicellular in nature, all higher eukaryotic organisms are multicellular in nature like plants and animal cell.
The simplest type of cells are prokaryotic cells have a cell membrane, cytoplasm where all of the metabolic processes occur, ribosomes where protein synthesis occur, and nucleoid which carry genetic information, reproduce by binary fission.
The eukaryotic cells have cell membranes, cytoplasm, ribosomes, and nucleus a house of DNA, rough endoplasmic reticulum for protein assembly, smooth endoplasmic reticulum for lipids, Golgi apparatus for protein sorting and exporting.
It has mitochondria energy house, a cytoskeleton for structure and passes information, and lysosomes or peroxisomes for digestion of waste, vacuoles for water storage, chloroplasts for photosynthesis.
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Which change of state is shown in the model?
A. condensation
B. evaporation
C. sublimation
D. deposition
is protein alive? explain why or why not
Answer:
Yet even an intact human brain can be biologically alive but incapable of consciousness, or “brain-dead.” Similarly, neither cellular nor viral individual genes or proteins are by themselves alive.
Explanation:
neither cellular nor viral individual genes or proteins are by themselves alive.
compare the external structure of the mammalian skin with that of the epidermis of a leaf.
Compare ( similarities and differences). please give just the correct answer I will mark you brainliest
Answer:
Mammalary skin
Skin is layered
Have hairs on it.
Acts as protectector
not so hard as epidermal
Epithelial
Can be layered
Dont have hair
Acts as protective layer also supports plants
Its hard
differentiate between gastrovascular cavity and alimentary canal
any differentiate between g
What is a blood clot?, Pliz l will mark you the brainest
Answer:
a blood clot is a gelatinous mass of fibrin and blood cells formed by the coagulation of blood
Explanation:
Answer:
Blood ClotThe process of forming a clot or thrombus in order to prevent excess loss of blood from the body is called the clotting of blood. A jelly mass like substance is formed by the platelets and fibrin in the blood. Platelets play a vital role in the clotting of blood.
Given below is the flow chart representing the major steps involved in the process of clotting of blood:
Injury to blood vessel and platelets release prothrombin
⇓
Activation of prothrombin to thrombin
⇓
Splitting up of fibrinogen to fibrins by thrombin
⇓
A mesh is formed around the wound controlling RBC and platelets by fibers present in fibrins
⇓
Bleeding is stopped
⇓
The clot hardens and becomes smaller in size
⇓
New cells are grown to rebuild the wounded site
⇓
Plasmin enzymes are released and the clot is dissolved
Even though they have several differences, a bacterium and a human cell will both contain DNA. With respect to evolution, what does this fact suggest?
Answer:
the fact that they both contain DNA in the nucleus of their cells, this suggests that they had a common ancestor they evolved from.
The fact that they both contain DNA in the nucleus of their cells, this suggests that they had a common ancestor they evolved from.
What are the features of DNA?Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix. The polymer carries genetic instructions for the development, functioning, growth and reproduction.
DNA is a complex, long-chained molecule that contains the genetic blueprint for building and maintaining all living organisms. Found in nearly all cells, DNA carries the instructions needed to create proteins, specific molecules essential to the development and functioning of the body.
DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins.
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Which best defines carbon dioxide?
A) It is the resulting molecule when two carbon atoms bond to one oxygen atom.
B) It is the resulting molecule when one carbon atom bonds to two oxygen atoms.
C) It is the resulting molecule when one carbon atom bonds to one oxygen molecule.
D) It is the resulting molecule when two carbon atoms bond to two oxygen atoms.
Which best defines carbon dioxide?
→ B) It is the resulting molecule when one carbon atom bonds to two oxygen atoms.
Which best defines carbon dioxide?
A) It is the resulting molecule when two carbon atoms bond to one oxygen atom.
B) It is the resulting molecule when one carbon atom bonds to two oxygen atoms.
C) It is the resulting molecule when one carbon atom bonds to one oxygen molecule.
D) It is the resulting molecule when two carbon atoms bond to two oxygen atoms.
Answer:-Option B) It is the resulting molecule when one carbon atom bonds to two oxygen atoms.
Explanation:-In carbon dioxide, carbon atoms are double-bonded to two oxygens.
Carbon dioxide (CO2) is a naturally occurring linear compound composed of two oxygen atoms covalently bonded to a carbon atom.
What are some of the byproducts of photosynthesis? (Chose all that apply)
1. Oxygen
2. Water
3. Glucose
4. Carbon Dioxide
Answer:
oxygen and glucose
Explanation:
What colour is the chlorophyll in a plant?
Answer:
green
Explanation:
The green color of chlorophyll is secondary to its importance in nature as one of the most fundamentally useful chelates. It channels the energy of sunlight into chemical energy, converting it through the process of photosynthesis
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What characteristic of life is related to a organ transplant
Answer: personality
Explanation: after an organ transplant some people have had personality changes I hope this helps I’m sorry if I get it wrong :(
what is irrigation ??
Answer:
Irrigation is the artificial process of applying controlled amounts of water to land to assist in the production of crops, but also to grow landscape plants and lawns, where it may be known as watering.
Answer:
Irrigation is the artificial application of water to the soil through various systems of tubes, pumps, and sprays. Irrigation is usually used in areas where rainfall is irregular or dry times or drought is expected. There are many types of irrigation systems, in which water is supplied to the entire field uniformly.
A potential answer to a research question is a(n)
A. theory
B. observation
C. question or problem statement
D. hypothesis
A research question is the basis of the experimental analysis of the subject matter. A hypothesis is said to be the potential solution to a research question. Thus, option D is correct.
What is a hypothesis?The hypothesis has been defined as the supposition that acts as the basis of the research and experiment and has been constituted of some evidence and facts to formulate the research question.
It acts as a starting point for any investigation and research and must be falsifiable. They should be testable in order to determine the verifiability of the research topic. If the tested hypothesis is correct then further research is conducted.
It can also be defined as an educated guess that is based on some prior knowledge and facts that are deduced through experiments.
Therefore, the hypothesis is a potential solution.
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What do we call molecules that are only
made of hydrogen and carbon?
Answer:
Hydrocarbons
Hydrocarbons are organic molecules consisting entirely of carbon and hydrogen.
Certain traits, such as color blindness, are determined by an X-linked recessive gene. A couple in which both have normal vision have a color-blind son. The probability of this couple having a daughter who is a carrier is
Answer:
A daughter can become a carrier in one of two ways – she can acquire the ‘gene’ from a carrier mother or from a color blind father.
Explanation:
If a woman has only one color blind ‘gene’ she is known as a ‘carrier’ but she won’t be color blind. When she has a child she will give one of her X chromosomes to the child. If she gives the X chromosome with the color blindness ‘gene’ to her son he will be color blind, but if he receives the X chromosome which doesn’t carry the color blindness ‘gene’, he won’t be color blind.
A color blind boy can’t receive a color blind ‘gene’ from his father, even if his father is color blind, because his father can only pass an X chromosome to his daughters.
A color blind daughter therefore must have a father who is color blind and a mother who is a carrier (who has also passed the color blindness ‘gene’ to her daughter). If her father is not color blind, a ‘carrier’ daughter won’t be color blind. A daughter can become a carrier in one of two ways – she can acquire the ‘gene’ from a carrier mother or from a color blind father.
Fats are a primary example of which class of biomolecule? *
5 points
carbohydrates
lipids
proteins
nucleic acids
Answer:
Lipids
Explanation:
Lipds are fats
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2. Our kidneys could not function without____
3. Water____
when it freezes.
4. Water resists changing its____
5. Many animals rely on____
of water to cool them.
Explanation:
water
solidify
state
temperature
