Protists have a distinct nucleus that is separated from the cytoplasm by the nuclear membrane. True or False
A babies iron stores are depleted by approximately how many months after birth?
Which nutrient aids in your body’s growth, everyday functioning, and maintenance?
According to the endosymbiotic theory, some organelles are believed to have evolved through a symbiotic relationship between eukaryotic and prokaryotic cells. describe three observations that support the endosymbiotic theory.
According to the endosymbiotic theory, mitochondria and chloroplasts are organelles that evolved through a symbiotic relationship between eukaryotic and prokaryotic cells.
The endosymbiotic theory proposes that mitochondria and chloroplasts were once aerobic bacteria, which were ingested by anaerobic bacteria and these types of cells then started a symbiotic relationship.
The lines of evidence that support the endosymbiotic theory include:
Both mitochondria and chloroplasts have bacteria-like ribosomes.Both mitochondria and chloroplasts have their own genetic material (DNA) organized in a circular molecule.Both mitochondria and chloroplasts divide by binary fission (like bacteria).Both mitochondria and chloroplasts have a similar size as prokaryotic (bacteria) cells.In conclusion, according to the endosymbiotic theory, mitochondria and chloroplasts are organelles that evolved through a symbiotic relationship between eukaryotic and prokaryotic cells.
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In what ways do ice and snow influence the storage of energy? What evidence supports this?
The __________ circulation drains all of the organs of the digestive system.
The major body structures and organ systems form during which trimester
The fetus can also kick, blink, and grasp. By the second trimester, all structures and body organs have been formed, but are not fully functional, like the kidneys and lungs. The kidneys are the organs that help to filter blood.
How many trimesters are there?Pregnancy has three trimesters, each of which is marked by specific fetal developments. A pregnancy is considered full-term at 40 weeks.
In humans, an unborn baby which develops and grows inside the uterus (womb). The fetal period begins 8 weeks after fertilization of an egg by a sperm and ends at the time of birth.
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Why does rwanda have the highest percentage of female lawmakers in the world?
Red blood cells contain the protein . when red blood cells are old or injured, the spleen breaks them down and converts the heme from their hemoglobin into . the liver further converts it into , which is stored in the . when you eat fat, the cells of your small intestine release the hormone . contraction of the forces the into the , where it emulsifies fats and aids in their digestion.
Red blood cells contain the protein HEMOGLOBIN. When red blood cells are old or injured, the spleen breaks them down and converts the heme from their hemoglobin into a GREEN PIGMENT CALLED BILIVERDIN. The liver further converts it into BILIRUBIN WHICH IS RELEASED INTO THE PLASMA AND IS RECIRCULATED IN THE LIVER AND IS THEN BOUND INTO ALBUMIN which is stored in the GALLBLADDER AND EXCRETED IN THE DIGESTIVE SYSTEM IN THE FORM OF BILE. When you eat fat, the cells of your small intestine release the hormone UROBILINOGEN where contraction of them forces them into the SMALL INTESTINE where it emulsifies fats and aids in their digestion.
Answer:
The correct answer given below:
Explanation:
Red blood cells contain the protein Haemoglobin. When red blood cells are old or injured, the spleen breaks them down and converts the heme from their hemoglobin into Bilirubin. The liver further converts it into Bile which is stored in the Gall bladder. When you eat fat, the cells of your small intestine release the hormone Cholecystokinin. Contraction of the Gall bladder forces the Bile into the Duodenum, where it emulsifies fats and aids in their digestion.
The entry of bile and pancreatic juice into the duodenum is controlled by
The hepatopancreatic sphincter (sphincter of Oddi) regulates the entry of bile and pancreatic juice into the duodenum. The hormones secretin and CCK, along with the parasympathetic nervous system, control the secretion of these fluids that are essential for digestion.
The entry of bile and pancreatic juice into the duodenum is controlled by the hepatopancreatic sphincter, also known as the sphincter of Oddi. This sphincter acts as a gatekeeper to regulate the flow from the bile duct, carrying bile from the liver, and from the main pancreatic duct, carrying pancreatic juice from the pancreas. The release of digestive enzymes, alkaline bicarbonate, and bile into the duodenum is a crucial process for neutralizing acidic chyme and aiding in the digestion of fats, proteins, and starches.
The hormones secretin and cholecystokinin (CCK) play significant roles in this regulatory process. Secretin is released when acidic chyme enters the duodenum, prompting the pancreas to release bicarbonate-rich pancreatic juice. CCK, on the other hand, is stimulated by the presence of proteins and fats in the duodenum, leading to the secretion of enzyme-rich pancreatic juice and the contraction of the gallbladder to release bile. Lastly, the parasympathetic nervous system, through vagal stimulation, also influences pancreatic secretion during the cephalic and gastric phases of gastric secretion.
A student makes the analogy that the cardiovascular system is like a highway. Why is this a good analogy?
Answer:
The correct answer is that the blood transports materials to and from distinct parts of the body.
Explanation:
As an essential biological fluid, blood flows spontaneously in the blood vessels and the heart, mainly via the pumping of the heart. It comprises plasma, aqueous fluid, and various cells like red blood cells that offer it its color.
The blood helps in the mediation of nutrients and oxygen, which are essential for performing important procedures of the body. It also assists in translocating molecules and cells of the immune system to various tissues, and to disperse hormones all through the body.
During adolescence, the _____ matures before the _____ in the brain.
_______ feathers shape the bird and give rigidity to the wings. A. Contour B. Crop C. Down D. Powder
Victoria has a crate of vegetables that weighs 100 newtons. She exerts a force of 100 newtons to lift the crate with a pulley. What’s the mechanical advantage in this situation? less than 1 equal to 1 equal to 0 more than 1
Answer:
Option B , equal to 1
Explanation:
Mechanical advantage is the ratio of out force to the input force.
Here,
Input force (IF) [tex]= 100[/tex] newtons
Output force (OF) [tex]= 100[/tex] newtons
The mathematical relationship for mechanical advantage (MA) is as follows
[tex]MA = \frac{OF}{IF}[/tex]
Substituting the given values in above equation, we get
[tex]MA = \frac{100}{100} \\MA = 1[/tex]
Thus, mechanical advantage is equal to 1
Option B is correct
A disease that appeared recently and is rapidly increasing or threatening to increase in the near future is referred to as:
Using the above set-up what is the phenotypic ratio of the offspring of this cross?
a.1:1:1:1
b.3:1
c.1:2:1
d.4:0
The phenotypic ratio of the offspring of this cross is 1:2:1. Hence the correct option is c.
The phenotypic ratio of the offspring resulting from this cross is 1:2:1. This ratio is derived from a dihybrid cross, considering two independently assorting traits. In such a cross, each parent is heterozygous for both traits. The possible phenotypic combinations in the offspring are determined by the various genotypic combinations resulting from the independent assortment of alleles during gamete formation.
In this case, the ratio 1:2:1 represents the four possible combinations of alleles in the offspring. One-fourth of the offspring are expected to be homozygous dominant for both traits (YYRR), two-fourths heterozygous for both traits (YyRr), and one-fourth homozygous recessive for both traits (yyrr). This phenotypic ratio is a classic representation of a dihybrid cross following Mendelian inheritance patterns. Hence the correct option is c.
In the peripheral nervous system, _______________ carry messages from special receptors in the skin, muscles, and other internal and external sense organs to the spinal cord, which sends them along to the brain. hormones motor nerves neuromodulators sensory nerves
The jellylike liquid located in the posterior chamber of the eye is the
The answer to this question is Vitreous Body. The Vitreous Body is a jelly form substance that fills the space on the eyeball of humans. The vitreous body also helps transmit light in the retina and this also functions to help maintain the shape of the eyeballs and make it stay in place.
What does the immune system monitor continuously to ensure the protection of the body?
How does a plant benefit from mycorrhizae?
Answer: By symbiotic association
Explanation: Mycorrhiza can be defined as the symbiotic association between the plant and fungus.
The term defines the function of fungus in the plant rhizosphere present in the roots of the plant. Its main function is to provide nutrition to the plant body.
This kind of association is mutualistic. In some cases it can have parasitic association.
The dna of ______ floats freely around the cell's cytoplasm.
What characteristic of life can be seen when a Venus fly trap closes on an insect?
Answer:
death and survival
Explanation:
the fly tried to survive but ended up traped in the venus fly trap the killed :)
How does human evolution or natural selection relate to the susceptibility of disease like malaria?
Dhara was recently in a car accident. her doctor told her that she has frontal lobe damage. how will this damage affect dhara? she will not recognize others. she will have memory loss. she will not experience fear. she will be less self-aware.
Dhara was recently in a car accident. her doctor told her that she has frontal lobe damage she will have memory loss. The correct option is B.
Higher cognitive skills, personality, decision-making, and memory retrieval are all significantly influenced by the frontal lobe.
Memory deficits, particularly in the capacity to recall and retrieve information, may result from damage to this region.
Dhara can have trouble remembering recent experiences, creating new memories, or recalling knowledge she has already gained. Her daily activities and social relationships may be impacted by this.
Thus, the correct option is B.
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Your question seems incomplete, the probable complete question is:
Dhara was recently in a car accident. her doctor told her that she has frontal lobe damage. how will this damage affect dhara?
A. she will not recognize others.
B. she will have memory loss.
C. she will not experience fear.
D. she will be less self-aware.
Emts respond to a known heroin abuser who is unresponsive. if they give naloxone (narcan) to this patient, the emts should recall that:
Answer:
Naloxone/Narcan administration may cause agitation and/or withdrawal symptoms.
Explanation:
Remember that the main purpose of administering Narcan/Naloxone is to correct respiratory depression in a patient. Prior to administering the medication, a patient must meet three primary criteria:
1. Pinpoint pupils ( evident in a patient with Opiod overdose)
2. Unconsiousness
3. Respiratory depression (cannot breath on their own)
Once those three criteria have been confirmed, under medical control guidance, you can administer Narcan/Naloxone (per proper packaging instructions).
The purpose of this medication is NOT to bring someone out of uncounsiousness. However, if too much is administered, there is a significant chance that the patient can become consious. Therefore, the patient can eitherr be 1) combative and angry because you "took him/her out of their high" or 2) they can be grateful that you helped them out. That being said, you want to be aware that if the patient is combative, your safety is at risk and you will need to involve law enforcement.
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Is it true that the assyrian people lived in north of mesopotamia near the euphrates river?
Which question can be answered by science?
A. Should the government regulate the use of shopping bags?
B. Why do you think people should use paper bags?
C. Should people be required to reuse plastic bags?
D. What is the effect of paper bags on the environment?
Answer;
D. What is the effect of paper bags on the environment?
This is an example of a question that can be answered by science.
Explanation;
To answer a question science constructs theories, and then compares them to empirically-collected data, and decides which theories provide better fits to the data. For example to the question, "What is the effect of paper bags on the environment?" can be answered using science, by developing a hypothesis, that paper bags have a negative effect on the environment, then collecting data experimentally and then deciding whether the hypothesis is acceptable.
Trichodesmium is a nitrogen-fixing cyanobacteria. Why might this cyanobacteria be important to other organisms in nitrogen-poor waters?
Answer:
The answer is Trichodesmium is an important source of usable nitrogen in the nutrient-poor waters and represents almost half of the nitrogen fixation in marine systems.
Explanation:
Nitrogen fixation is the process of converting atmospheric diatomic nitrogen into biologically usable forms of nitrogen, such as ammonium oxides and nitrogen. Trichodesmium is the only known diazotropic capable of fixing nitrogen in daylight in aerobic conditions, being the main diazotropic in marine pelagic systems and an important source of usable nitrogen in the nutrient-poor waters where it lives. Trichodesmium fixes nitrogen on a scale that represents almost half of the nitrogen fixation in marine systems worldwide.
Fertile land is by the _____________ artist ____________.
Fertile Land is painted by the Dutch artist Van Gogh.
Vincent van Gogh, a Dutch Post-Impressionist painter, is well-known for his landscapes, including paintings of fertile land. One of his famous works depicting fertile land is "Wheatfield with Crows." Van Gogh often depicted the rural life and natural beauty of the countryside, capturing the vibrancy of the fields with his bold use of color and dynamic brushstrokes. His paintings reflect his emotional connection to the land and its cycles of growth and harvest. Another notable example is "The Harvest," showcasing the busy, fertile farmland during the peak of the agricultural season.
A healthcare provider prescribes a diagnostic workup for a client who may have myasthenia gravis. what is the initial nursing objective for the client during the diagnostic phase?
Final answer:
The initial nursing objective for a client being diagnosed with myasthenia gravis is to ensure safety, manage symptoms, and support during diagnostic tests. Nurses must focus on assessing respiratory function, swallowing, applying the 'assess, document, re-assess, and advocate' strategy, educating the client, and monitoring responses to diagnostic interventions.
Explanation:
Initial Nursing Objective for Myasthenia Gravis Diagnostic Phase
The initial nursing objective for a client undergoing a diagnostic workup for myasthenia gravis is to ensure the client's safety and to manage symptoms during the diagnostic tests. Myasthenia gravis is an autoimmune disorder that affects the neuromuscular junction, leading to a reduction in the number of acetylcholine receptors and resulting in muscle weakness. During the diagnostic phase, it is crucial that nurses assess and monitor the client's respiratory function and ability to swallow, as these can be significantly affected by muscle weakness. The application of the “assess, document, re-assess, and advocate” strategy ensures a thorough evaluation of symptoms and effective communication with the healthcare provider for timely intervention.
It is also imperative for the nurse to educate the client on the nature of the diagnostic tests, such as the administration of an inhibitor of acetylcholinesterase, which can temporarily restore muscle contractility by allowing more acetylcholine (ACh) to remain at the neuromuscular junction. Monitoring the client's response to these tests is essential for accurate diagnosis and to facilitate the initiation of an appropriate treatment plan.