Food chains show energy transfer between organisms. The size of a food chain can vary, yet there is a limit to the number of levels that a food chain can reach. Why is there a limit to the number of levels that a food chain can reach?
Plants are not infinite in number.
Producers are limited by consumers.
Carnivores are too large to be eaten.
Energy is lost at each trophic level.
The correct answer is option Energy is lost at each trophic level.
In a Ecological pyramid, the energy is transferred from the producer to the consumer level. The ecological pyramid is triangular in structure, this is because the number of organism on each successive trophic level is less than the preceding one or the one below it.
The reason of this shape of ecological pyramid is on subsequent trophic level, the amount of energy transferred is only 10%. The rest of the energy is dissipated in the environment in the form of heat. As only 10% of total energy is transferred to the subsequent level, The amount of energy reaching to tertiary consumer is very less that it cannot meet the energy demand of next level.
Answer:
D
Explanation:
Choice of diet profoundly affects human health. only two common lifestyle habits are more influential than diet: _____ and _____.
N multiple sclerosis, identify the part of a neuron that typically hardens and disrupts the flow of information through neurons.
A plant chloroplast is a plastid.
True or False
Which event happens in the initial response to tissue damage?
Dural venous sinuses carry blood and cerebrospinal fluid (csf).true or false
chromatids that are attached at the centromere are called what kind of chromatids?
The care plan for a postoperative client includes a nursing diagnosis of "risk for urinary retention." the nurse determines that the client has been voiding adequately. what is the nurse's most appropriate action?
If a chemist adds ammonia to a cleaner, he would expect the litmus paper to turn ___________.
He portion of the stomach closest to the duodenum is called the ________. the portion of the stomach closest to the duodenum is called the ________. body pyloric region cardiac region fundus
How many earths could fit in the universe?
What loop prevention technique is implemented by distance vector routing protocols?
Routing loops are prevented in distance vector routing protocols through techniques such as 'route poisoning' and 'hold-down timers'. These are essential for maintaining network efficiency and preventing congestion due to redundant data transmissions.
The loop prevention technique that is implemented by distance vector routing protocols is called 'route poisoning.' Route poisoning is a method used to prevent routing loops by marking a downed route as having an infinitely high metric, which represents the distance to that route as being infinite. This effectively informs all the nodes in the network that the route is unreachable, thereby preventing data packets from being sent in an infinite loop. Another common technique is the 'hold-down timer,' which prevents updates about changes in network topology from being accepted for a certain period of time to allow the network to stabilize.
Routing loops can create significant network congestion and can lead to redundant transmission of data packets. Avoiding such loops is critical to maintain an efficient and functional network. It is indeed possible to design and select routes in a way that minimizes the need for these protection techniques, though it's equally important to employ them to safeguard against potential routing issues.
Lysosomes ________.
a. are the major site of protein synthesis
b. maintain a highly alkaline internal environment
c. are always used for the cell to "commit suicide"
d. contain acid hydrolases that are potentially dangerous to the cell
Answer:
d. contain acid hydrolases that are potentially dangerous to the cell
Explanation:
Lysosome is an eukaryotic cellular organelle. It maintains an acidic environment and has many hydrolytic enzymes( acid hydrolases). These enzymes are active only inside lysosome because they require acidic environment to function. They are inactive in the alkaline environment of the cell otherwise they would have posed a threat to cell's other components.
When a foreign particle enters the cell, it is engulfed by the lysosome and destroyed. Lysosome is also involved in autophagocytosis where it destroys old or malfunctioning cell components. Resultant amino acids or other components are recycled for cell's use. Sometimes they can be used by cell during apoptosis to destroy itself but it's not always the case.
As you walk home from your friend's house, you work up a pretty good sweat. your sweating is due in part to the functioning of your ________ system.
a. somatic nervous
b. autonomic nervous
c. central nervous
d. endocrine
what are black smokers.?
A)geysers of hot water associated with hydrothermal vents
B)black fish
C)black algae
What region of the brain, the second largest, maintains equilibrium and posture as well as programming and fine-tuning motor commands (using stored memories of movement patterns)?
Give a scenario where a cell may need to perform a form of endocytosis
Answer:
A scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. A scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.
Explanation:
What is the expanded region of a long bone made of spongy bone called?
A doctor who specializes in diagnosing and treating diseases and disorders of the eyes and vision.
A gesture that conveys conventional meanings that are recognized by members of a given culture, such as a hand wave or a nod of the head, is called a/an __________.
A patient with a terminal disease is unresponsive, not breathing, and without a pulse. the family states that the patient has a do not resuscitate (dnr) order signed by her medical doctor, but they cannot find it. the emt should:
If a terminally ill patient (example: on Hospice) is a full code at that point but the family cannot present you with a physical original and fully completed DNR, the EMT MUST begin resuscitation measures until the family can present the original DNR. You will have to work the code until you reach the hospital and the family can sign a new DNR at the hospital.
The ethics behind this are tricky but legally, you MUST work the code until the DNR is presented. However, to be kind, you don't have to go overboard with your interventions. You don't have to intubate the individual, you can do with a simple BVM and bag the patient while performing chest compressions.
Cytotoxic t (tc) cells only respond to __________.
What is the ploidy of organisms that have two sets of chromosomes? what is the ploidy of organisms that have two sets of chromosomes? 3n 4n n 2n?
The ploidy of an organism which has two sets of chromosomes is 2n. These organisms are diploid. Thus, the correct option is D.
What is Ploidy?Ploidy is the number of complete sets of chromosomes present in a cell, and hence the number of possible alleles for the autosomal and pseudo-autosomal genes.
The sets of chromosomes is the number of maternal and paternal chromosome copies in each homologous chromosome pair, which chromosomes naturally exist as.
The organism which has two sets of chromosomes is a diploid organism (2n).
Therefore, the correct option is D.
Learn more about Ploidy here:
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Why should you knock and ask for permission before entering a patient's room?
Knocking and asking for permission before entering a patient's room respects their privacy and maintains their dignity. It also ensures patient safety by providing a moment of awareness before interaction. This courtesy fosters trust and exemplifies good patient care practices.
Knocking and asking for permission before entering a patient's room is a crucial aspect of providing respectful and private patient care. It acknowledges the patient's right to privacy and gives them a sense of control over their environment, which is especially important in a healthcare setting where patients may feel vulnerable.
In addition to privacy concerns, knocking also serves as a safety measure. It alerts the patient to the presence of someone at the door and gives them time to prepare for the interaction, whether they need to cover up for modesty or pause a private conversation. Furthermore, this act of courtesy helps establish a trusting relationship between healthcare providers and patients.
In certain cases, such as an emergency room, a patient may invite friends or family into the treatment room, which is considered acceptable if it's the patient's wish. Additionally, maintaining patient safety is vital and takes precedence over social niceties or coworker relationships. Therefore, in scenarios where a healthcare professional fails to comply with hygiene protocols such as handwashing, an intervention is necessary to ensure patient safety. This direct approach emphasizes the imperative of infection control and adherence to hospital procedures.
Which should a nurse thoroughly evaluate before a bone marrow transplant (bmt) procedure?
Describe a few ways living and a nonliving thing are alike and a few ways they are different
What enables pcr to amplify just one location (locus) in a person's genome as opposed to several loci scattered throughout the genome (what gives pcr its specificity)?
Dna replication occurs by the addition of nucleotides to the end of the dna molecule. results in the formation of four new dna strands. produces two daughter dna molecules that are complementary to each other. uses each strand of a dna molecule as a template for the creation of a new strand. begins when two dna molecules join together to exchange segments.
George has attached ear lobes. Barbara has free ear lobes, but she is heterozygous for this trait. What are the chances of their child having free ear lobes?
When assessing a pregnant female, the nurse documents gravida 3, para 2 regarding obstetrical history in the health record. which situation correctly corresponds to the obstetrical history of the woman?