Answer and explanation
Endoplasmic reticulum (ER) is a tubulus membrane that is found in the cytoplasm of the Eukaryote. It's structure consists of the nuclear envelope and the pheripheral endoplasmic reticulum.
Endoplasmic reticulum is divided into 1. smooth ER and 2. rough ER
1. Rough ER - has large numbers of ribosomes attached to the outer surfaces of the lamella membranes, this is the area of ribosomes important for protein production, storage and export. The modified proteins move slowly along the inside of the rough ER until they are packed into small vesicles of the endoplasmic reticulum. After packaging, the proteins are moved by elements of the cytoskeleton either to the Golgi apparatus or to the plasma membrane.
2. Smooth ER - Is involved in the synthesis of steroid. On the surface of smooth ER, there are no ribosomes, therefore it does not participate in the formation of proteins. Its function is to contains many enzymes and other proteins, in liver cells, that have the ability to detoxify a wide range of drugs and poisons.
. you want to design a breathing machine that will bring 500 ml of air into the lungs. you begin with 100 ml of air at 2 atm of pressure. how would you change the pressure in your machine to accomplish your goal?
The pressure would be changed to 4 atm in the machine to bring 500 ml of air into the lungs.
What is pressure and what is breathing and why the pressure is brought up to 4 atm?Breathing is a biological phenomena , biological practice to inhale the air and exhale CO2 through lungs.In the process the inhalation lasts for 3 sec and exhalation for 3.5 seconds of time.Pressure is the quantity representing the force per unit area of the region in a considered time.To design a machine bringing 500 ml of the air into the lungs, initially it was at 100 ml of air at 2 atm .Hence the pressure would be changed to 4 atm in the machine to bring 500 ml of air into the lungs.To know more about breathing visit:
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SC.7.N.3.1 (assessing SC.6.N.3.1)8. Which of the following would be considered a theory?A. Animal research is more effective in labs that are outdoorsB. The universe was created from a single massive explosionC. Nuclear energy should be widely used to produce energyA cold front will arrive in 6 hours and result in heavy rainD
The universe was created from a single massive explosion would be considered a theory because it can't be tested directly,
I need help with this practice problem My questions are located at the top of the pic
Hi. We just had a session with this same question is there any doubt left?
If your digestive system is damaged or fails, how are other body systems or the body as a whole affected?
Body systems must work together. If one system will be damaged or fails, the other systems will be affected. If the digestive system will be fail, digestion will fails. Water will not be absorb that will lead to the circulatory system to have difficulty in the consistency of blood. If there is a presence of digestive disease, there will be an interference in the digestion as well. Other organ functions will be affected, too. Several effects will be seen such as dehydration, poor absorption of nutrients, blocked blood flow, etc. If the digestive shuts down due to damage of muscles or nerves, it may cause nausea, vomiting, lack of appetite and malnutrition. The nervous and circulatory systems work with the digestive system and these systems are greatly affected if it will not work properly.
The respiratory system is affected if the digestive system fails. These two systems work together to provide power to the entire body system. If digestion fail due to overeating, it can cause abdominal bloating. Bloating can lead to shortness of breath.
Read each example and decide what the resulting effect on the gene pool of that population would be.
A zebra migrates to join a different herd of zebras.
Competition for sunlight leads to taller trees.
The DNA of a snake changes to make its venom stronger.
A grassfire randomly sweeps through a population of buffalo
and kills most of the animals.
Being a migratory mammal, the zebra moves to several herds as it acquires newer alleles from other populations.
Taller trees result from the fight for sunlight, which may benefit particular alleles. New alleles may be produced from DNA when a snake's DNA is altered to make it deadly. Buffalo rushed across the grass, picking random alleles.
What impact do changes in a population's gene pool have?The size of a population's gene pool is assumed to have some bearing on its capacity for adaptation and evolution. For instance, a population's potential for future adaptability to shifting environmental conditions may be increased by a broad and diversified gene pool.
Genetic variety can be increased by new genes and alleles being created as a result of gene duplication, mutation, or other events.
When individuals leave their family unit or herd to join other populations, this is known as gene flow in animals. New alleles are introduced into populations when people move in and out.
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Answer:
1. B
2. D
3. A
4. C
Explanation:
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how could the differences in these pictures be related to evolutionary fitness?
To be considered as fit for evolution processes, a species must be able to adapt in its environment and with capacity to reproduce sucessfully. Ambrosia, for example, is an invasive species. It has the abillty to promote accelerated evolution due to its adaptibility to its environment. Zea mays is an excellent species for genetic analysis. Quercus also has evolutionary potential because of its physiological characteristics.
I WILL MARK BRAINLIST What’s the correct answer answer asap for brainlist please someone please
Answer: C
Explanation:
A biologist found an asymmetrical organism. A part of the organism was injured, but it was able to repair itself through regeneration.
Because the organism is asymmetrical and it was able to regenerate, it’s probably
.....
, and belongs to the phylum
....
.
Answer: 1. The right answer is amphibian.
2. The right answer is Mollusks.
Explanation:
1. Regenerating a limb is not possible in mammals, as in most vertebrates. But in amphibians such as the salamander yes!
This amphibian does it very well, capable of making tail, eye or snout too. For a very long time, scientists have been trying to understand this secret of the salamander, or that of the zebrafish, because the answer is scientifically interesting but also, of course, because we can hope to take advantage of it to imagine one day of medical treatment for injured members. Just over a year ago, an Australian team showed the role of macrophages, cells of the immune system.
2. Mollusks (Mollusca) are a branch of Lophotrochozoans animals. They are unsegmented animals, with bilateral symmetry sometimes altered. Their body usually consists of a head, a visceral mass, and a foot. The visceral mass is covered in whole or in part by a mantle, which secretes a calcareous shell. The nervous system includes a double periesophageal collar. The general cavity is more or less reduced to pericardium and nephridia.
What makes the reactants of photosynthesis and the reactants of cellular respiration similar?(1 point)Both involve combinations of glucose, water, and carbon dioxide.Both involve light energyBoth involve combinations of carbon, hydrogen, and oxygen. (my answer)Both involve ATP molecules.
Photosynthesis and cellular respiration are, in a way, opposite reactions.
While photosynthesis takes the light energy and water and converts carbon dioxide into glucose, cellular respiration takes the glucose to produce chemical energy and it results in carbon dioxide and water.
This means that both reactions involve glucose, carbon dioxide, and also water, so this would be the correct answer (A).
Why might protists like a euglena or algae not have a gullet or oral groove?
Protozoans like paramecium have protoplasmic invasions called gullets, which aid in these species' food uptake and digesting.
What are protists?Protists have eukaryotic cells, as opposed to bacteria, these organisms feature cytoplasmic membrane-bound components as well as a nucleus that is membrane-bound.
Another kind of protists is zooflagellates, they resemble animals and use flagella to move. Flagella are whip-like organelles that rapidly spin and help an organism move through the water like a boat's propeller.
The majority of zooflagellates have one to eight flagella that aid in movement, protists do not belong to a monophyletic group of creatures.
Therefore, The paramecium's gullet functions as the buccal cavity where food is transformed into food vacuoles for digestion.
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How far apart has Africa and North America move apart since 2001
Africa and North America have moved apart since 2001 by a total of about 21 inches.
What is a Continent?This comprises of about seven landmasses on the earth which is usually very large and discrete and comprises of different countries. Examples include Africa, Asia, North America, South America etc.
Continents in the world such as Africa and North America move apart since 2001 at a rate of 1 inch per year. Since we were told that it occurred in 2001 then the total years in which it occurred is 21 then =
1 inch × 21 = 21 inches.
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A scientist claims that Elysia chlorotica, a species of sea slug, is capable of photosynthesis. Which of the following observations provides the best evidence to support the claim?1) Elysia chlorotica grows in the dark when food sources are available.2) Elysia chlorotica grows faster when exposed to light than when placed in the dark.3) Elysia chlorotica will die if not exposed to light.4) Elysia chlorotica grows when exposed to light in the absence of other food sources.
The observation which best supports the claim that Elysia chlorotica is capable of photosynthesis is number 4. The ability to photosynthesize doesn't mean it won't be able to eat other food sources when abailable, but that it will be able to survive and grow in abscense of food sources if it is exposed to light, as light is necessary to obtain the energy for the process of photosyntesis.
Look up one prion disease and describe it here. What population does this disease infect? How is it usually transmitted? How common is it? What are the major symptoms? Be sure to cite your sources.
Kuru is a Transmissible spongiform encephalopathy which was formerly common among the Fore people of Papua New Guinea. This disease is caused by a prion, i.e., a protein that can trigger other proteins in the brain to fold abnormally. The abnormally folded proteins in the brain cause neurodegeneration which ultimately lead to death. The main symptom of the Kuru disease is the loss of coordination and control over the muscle movements. The transmission of Kuru was because of a ritual in which Fore people consumed body parts of their family members just after their death. The Fore people stopped to eat human meat in the early 1960s, causing the kuru epidemic to decline dramatically. It is not certainly known if the last kuru victim died in 2005 or 2009.
During what phase of the cell cycle do chromosomes replicate?
The phase of the cell cycle in which chromosomes replicate is the S phase.
What is Cell cycle?This is referred to as the series of events that take place in a cell during the process of reproduction an d in this scenario , the parent cells divide which gives rise to two daughter cells. Chromosome on the other hand is a thread like structure which is made up of DNA.
The S phase occurs between G₁ phase and G₂ phase and is an important process in mitosis as the DNA in the nucleus are synthesized and the traits present are usually passed to the offspring.
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what happens when change in the dna is not repaired in a cell that will become an egg or sperm?
What happens when a change in the DNA of an egg or sperm is not repair will depend on the location of the mutation. This means that whether the changed DNA region is a gene, a regulating sequence or "junk" DNA, the cell can survive or not. In case it survives, the replaced nucleotide may not altere the protein it codifies, resulting in a silent mutation, or it can cause altereations in the functioning even though not being lethal.
What is the name of the southern part of South America?
Answer:
Patagonia is the southern psrt of south america.
I need help with this question please and thank you, I’m not sure if I’m correct
In the core of cells, we can find the nucleus, which controls many of the cell functions and contains our DNA, that is found in chromosomes, thread-like structures made up of packaged DNA. The DNA, in turns, carries genes, sequences of nucleotides responsible for a product, which can be either an RNA molecule or a protein.
Water molecules moves out of a red blood cell and its shrivels is an example of.
A Protein Channel
B Simple Diffusion
C Facilitated Diffusion
D Osmosis
Answer: D Osmosis
Explanation: Water moves into and out of cells by osmosis
This table suggests that: A. a pH of 9 is the optimal pH for all enzymatic reactions. B. enzymes have particular pH's at which they function best. C. reactions proceed at the same rate for all enzymes. D. as the pH increases, the reaction rate always increases.
The answer to this question is B. enzyme have particular pH's at which they function best, since we can see both enzymes at different pH values, have different reactions rates: considering enzyme 1, the highest reaction rate is in pH 10, and considering the enzyme 2, the highest reaction rate is in pH 9.
Although animal nervous systems differ in complexity, their nerve cells are still remarkably similar
a. True
b. False
It is true that, Despite the fact that the complexity of animal nervous systems varies, their nerve cells are still remarkably similar.
Nearly all multicellular animals have nerve systems, but their complexity varies greatly. Sponge and the tiny blob-like placozoan and mesozoan organisms are the only multicellular animals without a nervous system. A diffuse nerve net makes up the nervous systems of ctenophores (comb jellies) and cnidarians (such as anemones, hydras, corals, and jellyfish). With the exception of echinoderms and a few worm species, all other animals have a nervous system that includes a brain, a central cord (or two parallel cords), and nerves that radiate from the brain and central cord.
The nervous system's most fundamental roles are to direct an organism's movement and to influence its surroundings (such as through pheromones). Signals are sent from one cell to another or from one part of the body to another to accomplish this. Signals that travel to muscle cells trigger the activation of muscles and signals that travel to endocrine cells triggers the release of hormones into the bloodstream or other internal fluids are the sources of the output that the nervous system produces.
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primates have long growth and development periods because:
Primates have long growth and development periods because: they have larger brains and higher intelligence as compared to other organisms.
Primates is the order of the class Mammalia. They are different and more advanced from all the other animals. They have more intelligence, five-digit feet and hand, more vision power than smelling power and slower growth. Their life span is also very large.
Brain is the most complex and largest organ of the body. It is the master regulator of all the actions of the body. The brain is divided into left and right hemispheres. There are three sections of the brain: forebrain, midbrain and hindbrain.
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You are examining a patient who has been in an accident. You test their motor skills and find that they can move their limbs but cannot write with a pencil and stumble often when walking. You conclude that they have damage to the part of the brain that governs fine muscle control. What area is this?A. Brain stemB. PituitaryC. Cerebral cortexD. Cerebellum
The answer is the letter D. Cerebellum- responsible for fine muscle control.
*Cerebellum is responsible for maintaining balance and posture.
what is the role of antibiotics is atropine
Atropine is a prescription medicine that is used to treat the symptoms of low heart rate (bradycardia), reduce salivation and bronchial secretions before surgery, or as an antidote for overdose of cholinergic drugs or mushroom poisoning. Atropine may be used alone or with other medications.
answer part seven and eight can help me move onto the next problem
To complete both parts of the questions we can say that: meiosis is the type of cell division used to form the gamete cells, the process of meiosis produces four haploid cells that contain a single copy of each chromosome, being four cells with 23 chromosomes (structure carrying genetic information found inside the nucleus of a cell) each in the case of humans. About the second part of the question that is talking about mutations, the only statement that is not true is that all the mutations are harmful.
Cognitive Development
Explain what is meant by “dimorphic” and how this term applies to pathogenic fungi.
Dimorphism is the occurence of the existence of two forms, in the case of sexual dimorphism the existence of two distinct types of a individual. The dimorphism among fungi is the capacity to convert between two specific morphological forms, like hyphae and yeast, the Ascomycota phylum have dimorphic organism. The dimorphism in fungi can happen depending of environmental condictions or situations, like an yeast in cold temperatures turning into mold.
Please help with Biology question
Answer:
from the pelvis or to more distant parts of the abdomen.
Explanation:
Which is the best definition of activation energy?
A) the energy required to end a chemical reaction
B) the energy required to bind a substrate to an active site
C) the energy required to form or break the bonds of reactant molecules
D) the energy required to re-form bonds in product molecules
Activation energy is the energy required to form or break the bonds of reactant molecules (option C).
What is activation energy?Activation energy of a chemical reaction is the energy required to initiate a reaction.
For example, the flame from the fuse of a firecracker provides a small initial amount of energy, after which the explosive reaction proceeds by itself, releasing a considerably larger quantity of energy.
The activation energy of a chemical reaction is strictly required to make a reaction occur i.e. conversion of reactants to products.
Therefore, the energy needed to break the chemical bonds of a reactant molecule is the activation energy.
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This element can form a wide variety of substances, including long chains. The different substances it forms are central to the molecules found in living things.What element it this?a) carbonb) oxygenc) hydrogend) nitrogen
Introduction to Biology: Biomolecules
In the options, they are listing the four more abundant elements in living beings: carbon (C), hydrogen (H), nitrogen (N), and oxygen (O). Given that all of them are essential to forming the molecules found in living beings, we need to check their chemical properties, because they are telling us that is an element that can form long chains.
• Hydrogen, has only 1 electron and can form one bond at a time, so it cannot form long chains
,• At normal conditions, ,Oxygen, form molecules of only 2 oxygen atoms (O₂), not long chains.
,• Nitrogen, is a similar case to oxygen because at standard temperature and pressure it forms a diatomic gas (N₂)
,• Carbon ,has ,4 atoms that can form covalent chemical bonds,, which allows it to form ,polymers, at, standard temperatures.
This means the correct answer is a) carbon.
Hi I’m not sure if I’m right with this Question I need some help please and thank u
The reason why these cells can develop too many tasks at once, beyond having the specific genes expressed, is that they can constantly produce usable forms of energy in form of ATP by using glucose in cellular respiration. So the correct answer to this question is the final one.
