How has modern science refined our understanding of evolution since darwin/wallace’s publication?
Question delineates the parameters of the study and the degree of depth that will be need.
A scientific theory _____.
1.is an attempt to explain how or why things happen in the manner observed
2.is the scientific community’s best explanation for certain observable facts 3.describes an observed pattern in nature without attempting to explain it
Answer:
2. Is the scientific community's best explanation for certain observable facts
An organism that produces catalase enzyme is protected from the harmful effects of
Atlantic halibut is a species of flatfish that uses gills to extract dissolved gases from water for cellular respiration. During a storm, a population of halibut is carried down into a deeper layer of the ocean. Predict whether this population would most likely thrive or die, and select the best explanation.
Answer:
D. It would die, because there are lower oxygen levels in deep zones of the ocean.
The deeper the ocean, the less gas exchange there is.
Which of the following is an example of active transport?
A. osmosis of water across the cell membrane
B. transport of glucose into a cell
c. the sodium-potassium pump found in nerve cells
d. none of the above
Any process that requires energy to diffuse is considered active transport. Since osmosis occurs naturally, this can be disregarded. The correct option is C.
Thus, the molecule is too big to normally enter a cell, glucose transport can either be active or passive.
A vital membrane protein present in animal cells, including nerve cells, is the sodium-potassium pump. In opposition to their concentration gradients, it actively transfers potassium ions (K+) into the cell and sodium ions (Na+) out of the cell.
This pump preserves the gradients in these ions' concentrations, which are essential for a number of cellular functions include nerve impulse transmission and maintaining cell volume.
Thus, Any process that requires energy to diffuse is considered active transport. Since osmosis occurs naturally, this can be disregarded. The correct option is C.
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Which of the following is NOT a source of water pollution?
discharges of sediment
industry waste
city sewage
none of the above
Which example describes animals living in a social hierarchy
Answer:
2. a worker bee defends the hive while the queen bee lays eggs
4. a prairie dog barks to alert family members when it spots a predator
Explanation:
i just did the test on edg. your welcome
Venus is often called the sister planet of Earth. Give three reasons that might explain this designation.
Sections of dna within a gene that do not encode part of the protein that the gene produces are called :
The sebaceous glands are located in the __________ layer
which organ is found in the left, upper quadrant of the abdomen and secretes digestive enzymes, insulin, and glucagon
What do paleontologists use to determine the actual age of rocks? A.) Biogeography B.) Radioactive dating C.) Geologic time scale D.) Relative age
A 38-year-old client attends the prenatal clinic for the first time. a nurse explains that several tests will be performed, one of which is the serum alpha-fetoprotein test. the client asks what the test will reveal. what should the nurse include in the reply?
Muscle atrophy is a decrease in muscle mass. upon retiring, a weight lifter who works out less will likely experience atrophy of which types of muscles?
here's the answer:
20 characters
How do patients with ALS eventually succumb to the disease?
respiratory failure
heart attack
cancer
brain hemorrhage
stroke
The patients suffering from ALS eventually succumb to the disease by respiratory failure.
ALS or Amyotrophic lateral sclerosis is a progressive neuro-degenerative disease. This disease affects simple movements of the muscles like swallowing and muscular cramps and twitches are common in this. Some people with ALS choose invasive ventilation for breathing but most people lose the battle with ALS due to respiratory failure.
An operon encodes enzymes for making an essential amino acid and is regulated like the trp operon. Which of the statements is true?
Answer:
The amino acid acts as a corepressor
Explanation:
According to computer models, most coastal areas will experience what effect of global warming?
increased flooding
decreased temperatures
increased crop production
decreased precipitation
If your on GradPoint or NovaNet,
your answer would be (A) increased flooding.
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In symphysis joints the articular surfaces of the bones are covered with ________.
Somebody once told me the world is gonna roll me
I ain't the sharpest tool in the shed
She was looking kind of dumb with her finger and her thumb
In the shape of an "L" on her forehead
Well the years start coming and they don't stop coming
Fed to the rules and I hit the ground running
Didn't make sense not to live for fun
Your brain gets smart but your head gets dumb
So much to do, so much to see
So what's wrong with taking the back streets?
You'll never know if you don't go
You'll never shine if you don't glow
Hey now, you're an all-star, get your game on, go play
Hey now, you're a rock star, get the show on, get paid
And all that glitters is gold
Only shooting stars break the mold
It's a cool place and they say it gets colder
You're bundled up now, wait till you get older
But the meteor men beg to differ
Judging by the hole in the satellite picture
The ice we skate is getting pretty thin
The water's getting warm so you might as well swim
My world's on fire, how about yours?
That's the way I like it and I never get bored
Hey now, you're an all-star, get your game on, go play
Hey now, you're a rock star, get the show on, get paid
All that glitters is gold
Only shooting stars break the mold
Hey now, you're an all-star, get your game on, go play
Hey now, you're a rock star, get the show, on get paid
And all that glitters is gold
Only shooting stars
Somebody once asked could I spare some change for gas?
I need to get myself away from this place
I said yep what a concept
I could use a little fuel myself
And we could all use a little change
Well, the years start coming and they don't stop coming
Fed to the rules and I hit the ground running
Didn't make sense not to live for fun
Your brain gets smart but your head gets dumb
So much to do, so much to see
So what's wrong with taking the back streets?
You'll never know if you don't go (go!)
You'll never shine if you don't glow
Hey now, you're an all-star, get your game on, go play
Hey now, you're a rock star, get the show on, get paid
And all that glitters is gold
Only shooting stars break the mold
And all that glitters is gold
Only shooting stars break the mold
In symphysis joints the articular surfaces of the bones are covered with hyaline cartilage.
What is hyaline cartilage?
Hyaline cartilage covers the end of the bone in symphyses, but the link between bones is made by fibrocartilage. Symphyses are present at the vertebral joints. There is virtually little movement in any type of cartilaginous joint.
The symphysis pubis connects the bodies of the pelvic pubic bones. The cartilage covering the neighboring sides of these structures runs collagen fibers from one pubis to the other. The pubic symphysis is a one-of-a-kind joint made up of a fibrocartilaginous disc wedged between the articular surfaces of the pubic bones.
Therefore, Hyaline cartilage covers the articular surfaces of the bones in symphysis joints.
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"during which phase of mitosis does the nuclear membrane dissolve completely and the chromatid pairs arrange themselves in a single file?"
The answer is metaphase. It is marked by the arrangement of chromosomes at the center of the cell, half way between each of the mitoic spindle poles. Movement is intermediated by the kinetochore microtubles, which push and pull on the chromosomes to align them into what is called the metaphase plate. The chromosomes on the metaphase plate are held there firmly by pushing and pulling forces from the microtubules. Cells can stop in metaphase for days until the chromosomes are properly aligned and the cell go in anaphase.
The prophase of mitosis is the phase in which the nuclear membrane dissolves completely and the chromatid pairs arrange themselves in a single line. This prepares them for segregation during metaphase.
Explanation:The phase of mitosis you're referring to, in which the nuclear membrane dissolves completely and the chromatid pairs arrange themselves in a single file, is the prophase. During prophase, the nuclear membrane breaks apart and the chromatids congregate at the center of the cell. They become organized in a structure known as the mitotic spindle, which will help separate the chromatids in a subsequent phase, metaphase. This is a crucial step in the cell division process which ensures the correct distribution of genetic material to the two daughter cells.
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During a routine physical examination, a 65 year-old male patient tells the physician, "i get up several times during the night to urinate." based on this symptom, the physician suspects that the patient may have:
Based on the given symptoms of the patient of having to urinate frequently at night, it is probably the patient has an enlarged prostate gland or has an infection of the bladder or urinary tract as this problem causes a person to urinate frequently during the evening. It will make the person’s sleeping time to be disrupted as frequently urinating has the tendency of waking a person in order to urinate.
Based on the symptom of nocturnal urination, the patient may have an enlarged prostate or a urinary tract infection, which are common in older men. The doctor will likely perform diagnostic tests to identify the underlying cause of the urinary frequency.
The symptom of getting up several times during the night to urinate suggests that the physician may suspect that the patient has an enlarged prostate or a urinary tract infection (UTI). Both conditions are common in older men. An enlarged prostate can squeeze the urethra and make it difficult to completely empty the bladder, leading to frequent urination, especially at night. A UTI in older adults can be indicated by symptoms like a fever, pain during urination, and increased frequency of urination.
Moreover, UTIs can cause a notable decline in mental function in elderly patients. The physician's approach to monitoring fluid intake and ordering a urine culture is aimed at confirming the presence and identifying the causative agent of a possible infection.
The Cenozoic Era follows the end of the _______ period.
1.Triassic
2.Jurassic
3.Permian
4.Cretaceous
Answer:
Option (D)
Explanation:
The Cenozoic era starts after the end of the Cretaceous. It is marked by the global mass extinction event known as the Cretaceous-Tertiary (K-T) boundary. The Cenozoic era started from about 65 million years back to the recent.
The new species started to evolve from the start of this era and there were abundant land animals during this era, and so this era is often regarded as the age of mammals. This is the most recent era in the geological time scale and is marked by the diverse group of organisms that has appeared after a long evolutionary process.
The Cenozoic era is again divided into three parts-
1) Tertiary- It is divided into (a) Palaeogene, (b) Eocene, and (c) Oligocene
2) Neogene- It is divided into (a) Miocene and (b) Pliocene
3) Quarternary- It is divided into (a) Pleistocene and (b) Holocene
Thus, the correct answer is option (D).
Giving brainiest!!!What is a hypothesis? A. A questionnaire B. A scientific experiment C. A set of assumptions used to explain some phenomenon for its own sake D. An educated guess that is based on some phenomenon
Scientists often use fruit flies as a method to test hypotheses about human genes. Why are fruit flies advantageous in the study of human inheritance?
Answer:
Fruit fly or Drosophila melanogaster is one of the most well understood model organism. It is used extensively in scientific research, specially human genetics due to following reasons:
Drosophila and humans share almost 75% of genesDrosophila's reproduction cycle is only of 8-14 days so many generations can be observed in a short amount of timeThey are small and hence do not require a lot of spaceTheir maintenance is easy and cheapIt is a well studied model organism so a lot of information is available about themIt is easy to mutate Drosophila genes.
What part of the brain is responsible for making you feel hungry
Dogs are more sensitive to smells than humans because _____.
a. dogs tend to be microsmatic
b. humans have more olfactory receptors than dogs
c. dogs have many more olfactory receptors than humans
d. each individual olfactory receptor is more sensitive in dogs than in humans
Dogs have many more olfactory receptors than humans therefore they are more sensitive to smells.
Why do dogs use olfactory receptors?The ability of dogs to smell is essential for them to be able to recognize individuals, gather significant information about their surroundings, come to decisions, and learn new things. It is extraordinarily specialized and sensitive, especially in comparison to the human sense of smell.
Dogs devote a significant portion of their mental capacity to analyzing odors. They have more than 100 million sensory receptor sites in the nasal cavity, compared to 6 million in people, and the area of the canine brain that is dedicated to analyzing odors is approximately 40 times larger than the comparable part of the human brain. This is because dogs have a larger nasal cavity than humans do.
Therefore, dogs are more sensitive to smells than humans.
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Compare and contrast solutions and suspension and give a common example of each type of mixture.
Hey there!
Compare and contrast solutions and suspension
Solutions are mixtures in which the components are evenly distributed throughout. A suspension is a mixture of water and undissolved materials that do not settle out . An example of a solution is the salt dissolved in water. An example of a suspension is a non fat milk.
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Tobey
True or false: the action potential begins at one spot on the plasma membrane but spreads to adjacent areas of the membrane?
i think the answer is D ...
The nurse is preparing assignments for the day shift. it is most important that the client with which diagnosis and description is assigned to a registered nurse?