Answer:
The correct option is B Pressure-sensitive baroreceptors uses tonic receptors which adapt slowly to the stimulus
Explanation:
a. The thalamus receives stimulus from all of the five senses (sight, smell, taste, hear, touch). FALSE. Olfactory information is not sent to the thalamus for its process. The rest is.
b. Pressure-sensitive baroreceptors uses tonic receptors which adapt slowly to the stimulus. TRUE. Among the different types of tonic receptors, we may find baroreceptors, irritation receptors, tactile receptors, and proprioceptors. Tonic receptors characterize by their slow adaptation to the stimulus. The first discharge is maximal when the stimulus is received and then it progressively decreases. They send a continuous signal to the CNS.
c. The three layers that the retina is made of: photoreceptors, bipolar cells, rod cells. FALSE. There are in fact three layers in the retina: photoreceptors, bipolar cells, and ganglion cell layers. NOT rod cells.
d. The sense of smell uses phasic receptors which continuously fire as long as the stimulus is present. FALSE. Olfactive sense uses phasic receptors, but not continuously. These receptors shoot when they receive the stimulus, and then cease if the stimulus keeps constant.
Modifications to chromatin can affect transcriptional activity by changing the accessibility of DNA to the transcription machinery. The given descriptions are examples of various processes that may or may not cause remodeling of chromatin. Match each description to the effect it has on transcriptional activity caused by chromatin remodeling. a. Activates b. Inactivates c. Activates and inactivates d. No effect1. Histone methylation occurs at different amino acids2. A transcriptional binds an enhancer sequence3. Histone acetyltransferase attach acetyl groups to the N-terminus of histones.4. Histone deacetylases remove acetyl groups from the N-terminus of histones
Answer:
1. Histone methylation occurs at different amino acids: c. Activates and inactivates
2. A transcriptional binds an enhancer sequence: d. No effect
3. Histone acetyltransferase attach acetyl groups to the N-terminus of histones: a. Activates
4. Histone deacetylases remove acetyl groups from the N-terminus of histones: b. Inactivates
Explanation:
Epigenetics refers to the mechanisms associated with changes in gene expression which do no involve alteration in DNA sequence. Epigenetic marks include DNA methylation and histone modifications (acetylation, methylation, phosphorylation, etc). These mechanisms act together in order to regulate gene expression at specific genomic sites (loci). Histone methylation is an epigenetic mark involved both in transcriptional repression and transcriptional activation. For example, trimethylation of the histone H3 at lysine 4 (H3K4me3) has been associated with transcriptional activation, while dimethylation of histone H3 at lysine 9 (H3K9me2) is often involved in transcriptional repression. Moreover, histone acetylation by histone acetyltransferases (HATs) is an epigenetic mark that is involved in transcriptional activation and chromatin decondensation, while histone deacetylation by deacetylases (HDACs ) is generally associated with gene repression. However, it is important to highlight that there are exceptions to this rule (for example, acetylation of the histone H4 lysine 20 is associated with gene repression). Finally, transcriptional activators are proteins that bind to enhancers in order to recruit coactivator proteins/complexes and thus activate transcription.
The sun create what kind of light
1. White light
2. Bright light
3. Colored light
4. Empty light
Only 1 answer someone help!!
Answer: Colored light
Explanation: Sunlight is emitted from the Sun's photosphere. A fraction of the light that travels from the Sun reaches Earth. It travels as light in a range of wavelengths, including visible light, ultraviolet, and infrared radiation. Visible light is all the light we can see with our eyes.
how does the simple cuboidal epithelium do its function
Answer:
Diagram of simple cuboidal epithelium. By lining the surface of various ducts of various glands and organs, simple cuboidal cells are able to provide a layer of protection from abrasion, foreign particles, invading bacteria and excessive water loss (due to its selective permeability) to the underlying tissue.
Explanation:
Answer:
Simple cuboidal epithelium consists of a single layer cells that are as tall as they are wide. The important functions of the simple cuboidal epithelium are secretion and absorption. This epithelial type is found in the small collecting ducts of the kidneys, pancreas, and salivary glands.
Mitosis and meiosis are cell division mechanisms that lead to different numbers of daughter cells. Which explanation best describes how these two processes maintain continuity?
meiosis :cell division that produces reproductive cells in sexually reproducing organisms
mitosis:cell division in which nucleus divides into nuclei containing the same number of chromosomes
meiosis nucleus divides twice and produces 4 daughter cells which are not genetically the same
mitosis necleus divides ones and produces two daughter cells which are genetically the same
Which of these would be a model of diffusion?
A. a student passes through a revolving door
B. two students pass by each other in a hallway
C. two students bump into each other in a crowded subway car
D. many students pass from a crowded room into an empty hallway
Diffusion can be described as the movement of molecules from a region of higher concentration to a region of lower concentration.
A model of diffusion could be many students pass from a crowded room into an empty hallway (option D).
A model is used to describe/illustrate a particular event or situation. In this case, the crowded room is the region of higher concentration. And the empty hallway is the region of lower concentration. The molecules refer to the students. And their movement from the crowded room to the empty hallway refers to diffusion.Learn more about diffusion: https://brainly.com/question/2135861
Which of the following traits are derived in primates, not ancestral? Mark all that apply.
-forward- facing eyes
-opposable toes
-mammary glands
-one offspring at a time
What would happen to the living things in the pond if you increase the concentration of salt?
Answer:
they would perish
Explanation:
If a nation has 120 million employed people and 15
million unemployed people, what is the unemployment rate?
Which of the following is not true about innate behavior? *
it is an inherited behavior
it does not change through generations
it is an instinct behavior
it is based on stored memory information
Explanation:
Innate behavior is an instinctive behavior you are born with. Example; Infants cry to let caregiver know they need food, water, love etc.
The answer is instinct behavior.
Instinct behaviour is not true about innate behavior.
Innate behavior is a type of behavior that are controlled by genes or are genetically controlled without any form of environmental experience.
It is a behavior.
Examples include cry of babies and so on
Instinct behaviour is behavior that can be controlled base on experience.
Therefore, instinct behavior is not true about innate behavior.
For more details, check the link below
https://brainly.com › ... › College
Which of the following is not true about innate behavior? *
hy help me do this fast plzz
bonus points
If a lock and key fit perfectly together and then one day the key melts and then it is now more droopy and no longer can fit into the lock, then that key wont work for the lock anymore. It's the same as if an enzyme breaks down a bit and now the shape doesn't fit perfectly, the enzyme doesn't work anymore
Importance and applications of biosystematics in biology?
how much is 14 pennies?
Answer:
14 cent
Hope this helps :)
Answer:
14 cents
Explanation:
$0.14
Helicobacter pylori, the bacterium responsible for gastric ulcers, can survive in the stomach (where the pH is as low as 1.5) in part because it synthesizes large amounts of the enzyme urease. (a) Write the reaction for urea hydrolysis by urease. (b) Explain why this reaction could help establish a more hospitable environment for H. pylori, which tolerates acid but prefers to grow at near-neutral pH.
Answer:
a) (NH₂)₂CO + H₂O ---> CO₂ + 2NH₃
b) The hydrolysis of urea by the urease enzyme generates ammonia which is a weak base. The ammonia thus produced, acts as a base by accepting the hydrogen ions present in the acidic environment of the stomach. This reactions serves to neutralize stomach acid in order to create a suitable pH environment that the bacterium requires to survive and colonize.
Explanation:
a) Urease catalyzes the hydrolysis of urea into carbon dioxide and ammonia. The equation of the reaction is shown below:
(NH₂)₂CO + H₂O ---> CO₂ + 2NH₃
b) The hydrolysis of urea by the urease enzyme generates ammonia which is a weak base. The ammonia thus produced, acts as a base by accepting the hydrogen ions present in the acidic environment of the stomach. This reactions serves to neutralize stomach acid in order to create a suitable pH environment that the bacterium requires to survive and colonize.
The reaction of ammonia with hygrogen ions from HCl is shown below:
NH₃⁺ + H⁺ ----> NH₄⁺
Therefore, the continuous activity of the enzyme urease, helps to establish a more hospitable environment for Helicobacter pylori
Nerve cells do not replicate their DNA after reaching maturity. A cell biologist observed that there was x amount of DNA in a human nerve cell. In four other types of human cells, labeled A-D, she measured the following amounts of DNA:
cell A, 2x; cell B, 1.6x; cell C, 0.5x; cell D, x
Match the four cell types with the following choices: (1) sperm cell; (2) bone cell just beginning interphase; (3) skin cell in the S phase; (4) intestinal cell beginning mitosis. (Hint: review the phases of the cell cycle and mitosis in chapter 12 if needed!).
Cell Types, Amount of DNA - Specific Cell
cell A, 2x:
cell B, 1.5x:
cell C, 0.5x:
cell D, x:
Answer:
Cell A= Intestinal cell begining mitosis
Cell B= Skin cell in S phases
Cell C= sperm cell
Cell D= bone cell just beginning interphase
Answer of the question
biological term for the germ layer that gives rise to the nervous system
5. An organism with the same appearance as their surrounding will pass on their genes,
while organisms that don't die off
A. Natural Selection
B. Sexual Selection
C. Camouflage
D. Overproduction
Answer:
A. Natural Selection
Explanation:
6. New experimental data does not support a currently accepted hypothesis. Which
course of action should the researcher take?
A) Do the experiment again.
B) Change the data to fit the hypothesis.
C) Form a new hypothesis and plan a new experiment
D) Change the procedure to obtain the desired outcome.
the role of enzymes in seed germination
Answer:
yes!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
help plz..............
Answer:
Should be 50% tell me if Im right
What is the meaning of vida
Answer:
lifetime
Explanation:
it's lifetime in Spanish
Choose one of the bubbles state whether you think we should develop this technology, and explain your reasoning
Answer:
The green buble
Explanation:
Antibiotics are added to the animal feed or drinking water of cattle, hogs, poultry and other food-producing animals to help them gain weight faster or use less food to gain weight.
Because all uses of antimicrobial drugs, animals contribute to the development of antimicrobial resistance, it is important to use these drugs only when medically necessary.
the production (e.g. growth enhancement) purposes as well as for the treatment, control or prevention of animal diseases. Even today, it is not entirely understood how these drugs make animals grow faster. The drugs are primarily added to feed, although they are sometimes added to the animals’ drinking water.
CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION I WILL MARK YOU BRAINLIEST THANK YOU !!!
Answer:
C. Non-depletable
Explanation:
Answer is C. because it is replaced often and cannot be completely used up
pls help i dont get it
easy 5th grade science please look at photo and answer!! giving brainliest
Answer:
What happens after water particles returns to the ocean is that it'll evaporate over the island, and precipitation happens :3
Explanation:
:3
Interaction between multiple, individual polypeptide chains to form a complex is ______ structure
Answer:
alternative structure
a) Exploin neurulation
Answer:
Explanation:
Neurulation is a process in which the neural plate bends up and later fuses to form the hollow tube .which eventually differentiate into the brain and the spinal cord of the central nervous system.
Why would a normally aquatic or marine species adapt to the supralittoral fringe where they have to deal with desiccation and temperature stress?
Answer:
In order to survive.
Explanation:
A normally aquatic species adapt to the supralittoral fringe in order to survive in that environment. Supralittoral zone also referred to the area on coastlines and estuaries, that is regularly splashed, but not submerged by ocean water. This environment is different for the marine organisms that causes adverse effect on the marine organisms but these marine animals has the ability to adapt that environment by using certain mechanism in order to survive and easily reproduce in that environment.
PLEASE HELP ASAP
Which of these is an example of a population in a desert ecosystem?
A. a saguaro cactus
B. the amount of rainfall
C. a fennec fox and it's young
D. hawks and the lizards they feed on
Answer:
A
Explanation:
because cactus are in the desert
name two processes for which dna is responsible for
Answer:
Explanation:
DNA contains the instructions needed for an organism to develop, survive and reproduce.
Contains the genetic instructions for the development and function of living things
The main role of DNA in the cell is the long-term storage of information.
The two major processes that the DNA performs in the cell include:
Storage of genetic information Synthesis of protein for the regulation of cellular activities.The DNA stores the genetic information relating to the cell and ensures that the integrity of stored information is preserved and inherited by subsequent generations. It does this by replicating itself in a semi-conservative way and copies of the replicated DNA are inherited by subsequent generations. This is why the DNA is otherwise known as the molecule of hereditary.
DNA is also at the center of protein synthesis. It forms the template for the synthesis of RNA in a process known as transcription and the RNA forms the genetic codes for the synthesis of protein.
Hence, storage of genetic information and indirect regulation of cellular processes are two major processes attributable to the DNA.
More about the functions of the DNA can be found here: https://brainly.com/question/12535449
