Which statement about how organisms depend on abiotic factors in an aquatic ecosystem is not true? a. most living organisms can survive in environments with several different temperature and salinity levels b. both aquatic plants and animals depend on dissolved oxygen for respiration c. abiotic factors that impact an aquatic ecosystem include temperature, salinity, flow, and dissolved oxygen in the water d. abiotic factors of an aquatic ecosystem determine what kind of life can exist in that environment
Which of the following compounds may be polymers
A. Carbohydrates
B. Nucleic acids
C. Proteins
D. All of these
The option (D) is correct. All of these are polymers.
What do you mean by polymers?A polymer is a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits. Due to their broad spectrum of properties, both synthetic and natural polymers play essential and ubiquitous roles in everyday life.
Moreover, polymer is a large molecule or a macromolecule which essentially is a combination of many subunits. The term polymer in Greek means 'many parts'. Polymers can be found all around us. From the strand of our DNA, which is a naturally occurring biopolymer, to polypropylene which is used throughout the world as plastic.
Therefore, examples of synthetic polymers include nylon, polyethylene, polyester, Teflon, and epoxy. Natural polymers occur in nature and can be extracted. They are often water-based. Examples of naturally occurring polymers are silk, wool, DNA, cellulose and proteins.
Learn more about polymers:
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What is a diagnostic sign for meningitis marked by the person's inability to extend the leg completely when the thigh is flexed upon the abdomen and the person is sitting or lying down?
Why is it important that antibodies have a symmetrical quaternary structure? to enable binding to many different antigens to create a variable region to create two identical binding sites for antigens to ensure a stable structure?
Final answer:
Antibodies have a symmetrical quaternary structure that is important for several reasons. It enables binding to many different antigens, creates a variable region for different specificities of binding, and ensures a stable structure for proper immune function.
Explanation:
Antibodies have a symmetrical quaternary structure for several important reasons. One reason is to enable binding to many different antigens. The symmetrical structure allows for the creation of a variable region within the antibody, which allows for different antibodies to have different specificities of binding. Additionally, the symmetrical structure creates two identical binding sites for antigens, which increases the efficiency and effectiveness of antibody-antigen interactions. Finally, having a symmetrical structure ensures a stable antibody structure, allowing for the proper functioning of the antibody in the immune response.
Okay so I think this is a trick question?
Risk is __________.
A. the probability that something unwanted will happen
B. the probability that something will happen
Which part of an enzyme molecule binds to its associated substrate?
How do enzymes maintain homeostasis at the cellular level?
What is one result of a chemical change?
A.Energy is created.
B.A new material is formed.
C.Materials change from one state to another.
D.Elements are permanently destroyed.
Upon assessing the client's jaw, the nurse finds decreased range of motion and notes crepitus. what would the nurse suspect?
Which of these is a process during which the hydrosphere interacts with the geosphere?
1. Solidification of water into ice
2. Absorption of rainfall by soil.
3. Evaporation of rainfall from puddles.
4. Condensation of water vapor into water.
The kingdoms included in the linnaeus system of classification are
Breah is a 24-year-old who wants to follow the recommendations of dietary guidelines for americans, 2010. she consumes no more than 1500 mg sodium/day; her cholesterol intake is about 400 mg/day; and her intake of folic acid is 400 mcg/day. according to this information, she should reduce her intake of
What scientific tool helped in the development of cell theory?
When the protons are concentrated on one side of the membrane, they pass through golgi complex and form what?
Type 11b fast twitch muscle fibers are those used in a short sprint
a. True
b. False
Answer:
true
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Explanation:
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Olive oil, canola oil, and cashew nuts are rich in monounsaturated fatty acids. olive oil, canola oil, and cashew nuts are rich in monounsaturated fatty acids.
a. True
b. False
In _____, the alveolar walls break down, adjacent alveoli fuse, and the lungs lose their elasticity.
Which question can be answered by science? A. Is it acceptable to make people recycle grocery bags? B. How much water is used to produce one paper bag? C. Should the government regulate the use of grocery bags? D. Is it right for stores to provide plastic bags for free?
The brain and spinal cord are covered and protected by three connective tissue layers called __________.
Final answer:
The three protective layers of connective tissue covering the brain and spinal cord are known as the meninges, consisting of the dura mater, arachnoid mater, and pia mater.
Explanation:
The brain and spinal cord are covered and protected by three connective tissue layers called meninges. These layers are, from the outermost to the innermost, the dura mater, the arachnoid mater, and the pia mater. The dura mater is a robust and durable membrane that provides a strong protective sheath over the brain and spinal cord. The arachnoid mater is a web-like layer that sits beneath the dura mater. Finally, the pia mater is a delicate membrane that closely envelopes the surface of the brain and spinal cord, following the contours of these structures closely. Between the arachnoid and pia mater lies the cerebrospinal fluid, which offers additional protection and cushioning to the central nervous system.
Suppose you extracted dna from a cheek cell that contains two copies of the same alu insert (one on each homologous chromosome). after 30 cycles of pcr, how many total copies of this region would be produced (assuming successful amplification)? show your work.
After n cycles of PCR = 2^n copies of the target sequence
Where n = 30 cycles as given in the problem.
Substituting this to the identified formula, let
2^30 1,073,741,824 copies of the target sequence.
Therefore, a total of 1,073,741,824 copies would be produced.
Trondheim, norway is located at approximately 63° n. despite its high latitude, it has a relatively moderate annual temperature pattern. what likely accounts for this moderation of temparature
A grocery store newspaper claims that apple cider and honey can cure cancer, bronchitis, acne, bad breath, heart disease, athlete's foot, asthma, the common cold, and other ailments. a shopper decides to consume apple cider and honey exclusively. what questions should the shopper have asked before adopting the apple cider and honey diet?
What do hypotheses, theories, and laws have in common?
The flexor hallucis longus muscle originates from the __________.
An intuitive hunch is most likely to be accurate when:
What are 2 organelles that are in a plant cell but not anima;?
Hormones are ___________. chemicals released into the bloodstream by the endocrine glands chemicals found in the synaptic vesicles, which when released, have an effect on the next cell chemicals found in the soma, which when released, have an effect on the next cell chemicals released into the bloodstream by the brain
A scientist measures the weight of two different animals one is 250 grams and the other is 330 grams in milligrams what is the difference between the two weights of the animals
when does cellular respiration occur? are there any situations where living cells are not respiring?
Blockage of a major artery is caused by a blood clot. these clots may form when ________.