When a fire is burning, a small fire leads to more fire. This is an example of: ________. Group of answer choices a. Negative feedback b. Positive feedback c. Homeostasis d. Electronegativity
Q: Give a) 3 examples of biotic components b) 7 examples of abiotic components
A: Biotic refers to the living components of an ecosystem and abiotic refers to the non-living componen...
Q: 7:12 What is not true for Sequence tagged site (STS) markers: O cannot be mapped by fluorescence in ...
A: Any sequence of DNA which shows polymorphism and can be recognized utilizing a molecular method is r...
Q: What is the micro-climate zone of North Carolina?
A: Introduction: A microclimate is a small region within a larger area that has a different climate fro...
Q: 2. In plants known as "four-o-clock", the allele for the dominant red-flower is incompletely dominan...
A: Introduction: Incomplete dominance is a form of inheritance in which one allele for a specific trai...
Q: Ribosoms were isolated from bacteria grown in a "heavy" medium (13C and 15N) and from bacteria grown...
A: Ribosomes are the smallest cell organelle without any membrane (membrane less), they are found on th...
Q: Sponge archeocytes can differentiate into A. eggs (oocytes) B. sperm C. choanocytes D...
A: Sponges are organised at a cellular level. They don't have any features that may be classified as or...
Q: Define peripheral nervous system (PNS)
A: The nervous system functions by sending nerve impulses along the axons of neurons and releasing neur...
Q: Describe two mammal order, structures, and behaviors.
A: Mammals Mammals are the vertebrate animals which have warm blood and hairy body.
Q: Please match the tissue to the description. covers the ends of bones in a joint [ Choose ] [Choose ]...
A: Covers the end of bone - cartilage Moves food through intestine - smooth muscles. Lines the lumen of...
Q: Why is it an advantage for eukaryotic cells to have different compartments (aka organelles) in the c...
A: Introduction Organelles are small structures that work together in the cytoplasm to carry out life f...
Q: In glycolysis, the net production of ATP is ATP. In the Krebs cycle, it is ATP, and in the electron ...
A: ATP(Adenosine triphosphate) The nucleotide coenzyme Adenosine triphosphate is the most important f...
Q: Exercise 3: Explain briefly the importance of the geolcgic time scale? Use the space below.
A: The geologic time scale (GTS) is a method of chronological dating that uses geological strata (strat...
Q: Which one is NOT the cause of hypoxic hypoxia? . emphysema . hypoventilation . high altitude . c...
A: Hypoxia is a condition that occurs when there is reduced level of oxygen in the tissues. There are d...
Q: In secondary growth, grows inward towards the middle of the stem, and grows outwards towards the edg...
A: The majority of plants have the capacity to grow throughout their life, which is in contrast to an...
Q: Enumerate and discuss the illuminating parts of the microscope and give their respective functions.
A: There are 3 illuminating parts of microscope: Condenser Diaphragm Light source
Q: What are 5 facts about fermentation?
A: Introduction: Pyruvic acid is a 3 carbon compound formed as the end product of glycolysis. Glycolys...
Q: As all ecosystems are connected, in the warming sea temperature, what techniques are used to create ...
A: A stream is considered as a water body whoch is known to carry a number of particles of rock and fur...
Q: Watson and Crick used scientific reasoning, their knowledge of biochemistry, and the research of oth...
A: Many people believe that DNA was discovered in the 1950s by James Watson, an American biologist, and...
Q: DHCR7 (7-dehydrocholesterol reductase) gene.
A: This gene encodes an enzyme that removes the C(7-8) double bond in the B ring of sterols and catalyz...
Q: Picture A Frog Muscle 3 6. 1 1 4 A 5.
A: Ventral refers to front part of the body (anterior) Ex: stomach is ventral Dorsal refers to back por...
Q: How does the limb orientation of "advanced" tetrapods differ from that of "primitive" tetrapods? How...
A: Tetrapods are four-footed animals that belong to a group that comprises all vertebrates above the le...
Q: Insects are attracted to the flower of plants. When they rub against parts of the plant, they carry ...
A: The transfer of pollen grains(carrier of male gamete) from anther to stigma is known as pollination....
Q: If Photosystem I is inhibited, will H+ still be pumped into the thylakoid space? O No, because the e...
A: When an electron leaves PSII, it is transferred first to a small organic molecule (plastoquinone, Pq...
Q: 1. What are the different glands involved in a semen? 2. What is the process in the delivery of sp...
A: 1ans) Semen = sperm+accessory glands. *The glands that are involved in a semen are Accessory glands....
Q: What are the four assumptions of the Lincoln-Peterson model, and how do we make sure they are satisf...
A: Lincoln-Peterson model This model gives the ability to determine the size of the population of an in...
Q: Which type of virus must contain an RNA replicase packaged in the viral particle in order to carry o...
A: A virus is a small collection of genetic code, it can be DNA or RNA, surrounded by a protein coat ,...
Q: Explain how Bacara is used to isolate, differentiate and enumerate Bacillus cereus from food sample
A: Bacillus cereus is a spore-producing Gram-positive bacterium present in the soil. The spores produce...
Q: Which of the following is an accurate model and description of anaphase II in Cape parrots?
A: As per the Karyotype of the somatic cells from the cape parrots obtained, they have total 29 pair of...
Q: 1. Compare your average heart rate, respiratory rate, and temperature in the "Before exercising" row...
A: 1.. Before exercise Body temperature is normal (37 degree C) Respiratory rate is 15 times per minut...
Q: Match each of the follwoing
A: In 1961, Matthaei became the first to describe the structure of a codon. tRNA is a literal "adaptor"...
Q: what is urology ? what are the findings about urology ? Explain the branch of medicine and physiolog...
A: The human urinary system is made of organs like kidneys, bladder. ureters, and urethra. The main fu...
Q: If the gene is named Fh and the disease allele is Fh and the wildtype allele is fh, give the genotyp...
A: Familial hypercholesterolemia (Fh) is a genetic disease caused by mutations in the LDLRAP1 gene. the...
Q: Discuss the structure and functions of a cell membrane comprehensively
A: Introduction "A cell is the smallest, most fundamental unit of life, responsible for all of life's o...
Q: The activated sludge process was developed from empirical knowledge and is now widely used for wast...
A: Activated sludge-The activated sludge process is a type of wastewater treatment process for treating...
Q: It is a fact that insects are widely distributed in any type of ecosystem. Some are vectors of causa...
A: Unlike the closed circulatory system found in vertebrates, insects have an open system lacking arter...
Q: Why do infants experience emotions?
A: Emotion is defined as a complex experience of consciousness, bodily sensation, and behaviour that re...
Q: Interested in exploring the genetic pathways that lead to neurological issues, you want to see if re...
A: Genetic diseases or disorders can take place in case of present of a mutant gene. The mutation can b...
Q: This is a picture of spoongy bone, please use ARROWS to label the following: trabecula red bone mar...
A: The human body’s skeletal system shows the presence of cartilages, bony tissues as well as joint str...
Q: J. ach compound on the left with its name on the right. Match the name with the functional E. group ...
A: Functional groups are atoms that bind to an organic molecule's carbon backbone and give certain prop...
Q: Kingdom: Animalia Phylum: Chordata Order: Dipnoi Suborder: Ceratodontoidei Family: Neoceratodontidae...
A: Neoceratodus forsterai is the only surviving lungfish species and is very old making it a living fos...
Q: What was the only conclusion that John Cairns could draw from his 1963 paper "The bacterial chromoso...
A: Introduction :- Escherichia coli (E. coli) is a type of bacteria that dwells in the intestines of bo...
Q: You will be making LB media in today's lab. Given the recipe for 1L of LB media on pg. 63 of this ma...
A: For making a 1 L LB media solution. First Weigh out 10 g tryptone, 10 g sodium chloride (NaCl) and 5...
Q: Biologists produced the karyotype of a different parrot in Africa that had 2n = 62. Using the inform...
A: A typical African parrot has a karyotype containing 2n = 62-64 chromosomes with 8 pairs of macrochro...
Q: ter reading the “Using spectrophotometers to study a Catechol Oxidase Reaction section, copy into yo...
A: Catechol Oxidase reaction is the process or reaction known to cause browning of the fruits when the ...
Q: Explain the importance of natural pigments in fruits and vegetables
A: Answer : The importance of pigmentation in fruits is that the pigmentation plays an important role i...
Q: communication. Communication between two plant cells • Communication between two immune-system cells...
A: A.. Communication between two plant cell is cell to cell combination, with help of plasmodesmata B....
Q: Why might adding a topoisomerase enzyme increase the sensitivity of an RT-Lamp assay. Would you expe...
A: Reverse transcription-polymerase chain reaction (RT-PCR) assay is used for the detection of coronavi...
Q: How are CFU (colony forming units) calculated in urine? (Hint/comment: what is the volume in urine ...
A: Answer
Q: Using a diagram, outline the processes of the best DNA technology tools/techniques involved in the d...
A: A novel tool for the detection of BCR/ABL fusion gene in chronic myelogenous leukemia (CML) was deve...
Q: What is the best specimen for a urine collection? ** specimen underlined in original practice exerci...
A: Urine is collected for many works like urine test, pregnancy test; for checking urine infection (UTI...
When a fire is burning, a small fire leads to more fire. This is an example of: ________.
Fire is an example of a chemical reaction. Forest fires are extremely dangerous. They have the ability to devastate a large area in a couple of minutes. Every year, individuals are killed by fire.
Step by step
Solved in 2 steps
- Which of the following allows rapid change in one direction butdoes not achieve stability?a. homeostasisb. positive feedbackc. negative feedbackd. All of these are correctIf the oxygen level in the blood decreases, the brain sends a message to the lungs/diaphragm to breathe faster, which increases the levels of oxygen in the blood. This describes a negative or positive feedback loop.Positive feedback mechanisms are beneficial, but they need to be controlled. Discuss a scenario where if positive feedback was allowed to continue, the body might get damaged.
- In a positive feedback loop: O Processes lead back to homeostasis O Processes lead away from homeostasis The effect of the original stimulus is increased 2nd and 3rd answer are correctwhich of the following statements are true about homeostasis? Select all that apply. a. The selective permeability of the cell membrane allows for thermoregulation. b. Homeostasis is an organism‘s way of maintaining constant and balanced internal processes. c. Ectotherms rely on environmental heat to maintain homeostasis. d. Homeostasis works by a system of positive feedback.create your own diagram by illustrating how the positive and negative feedback mechanism works. You should use specific condition in the body like (temperature regulation, osmotic balance and glucose levels). Make your diagram creative and presentable by making use of colors and other art materials and don’t forget to put labels on your work.
- Energy is the fuel that lets you enjoy all of the activities in your life. Excess en- ergy is stored in specific cells and locations in your body. Which of the following stores energy in your body? A dense connective tissue B Listen C D neuron reticular collagen adipose tissueA common homeostatic regulatory mechanism involves an end product in a pathway generating an inhibitory effect on the upstream processes which stimulate its own production. This is an example of ______ a feedforward mechanism positive feedback autonomic regulation negative feedback extrinsic control of homeostasisNegative feedback systems keep regulated variables within a normal range by ______________ any upward or downward shift in that variable, i.e. it means an _______________ response to a stimulus.
- which of the following situations illustrates that a homeostatic mechanism is not operating properly? a. acute high blood pressure b. normalized blood glucose levels c. dailt fluid intake equals dailty fluid output d. all of these illustrate homestatic mechanisms operating properlyExamples positive and negative feedbackWhen you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed. Which type of feedback mechanism is exhibited in the given situation? Group of answer choices positive feedback negative feedback behavioral feedback structural feedback