Which specimen had tiny hind legs with a mobile knee and several toes and lived 35-40 mya? Basilosaurus Pakicetus Sinonyx Ambulocetus
if an dna molecule is compared to a spiral staircase, what parts make up the steps.
A)pairs of nitrogen bases.
B)sugar and nitrogen base.
C)sugar and phosphate.
D)pairs of sugars.
Answer:
Option A, pairs of nitrogen bases
Explanation:
The helical structure of DNA if compared to the spiral staircase then, the following structure of spiral staircase will resemble to the following parts of DNA -
a) The spiral staircase's hand rail will be equivalent to the sugar phosphate base of DNA that holds the nitrogenous base
b) The steps of spiral case will be equivalent to the pair of nitrogenous base
Nitrogenous base pair include
- Pair of adenine (A) and thymine (T)
- Pair of guanine (G) and cytosine (C)
Thus, option A is correct
Five ch2 groups bonded in a ring" describes the structure of _____.
What are two properties shared between the eye and all other astronomical detectors??
Light collecting is one important property. This is determined by the diameter of the aperture and primary lens of the astronomical detector. The pupil of the eye is analogical to the aperture of the detector.
Another property is the formation of an image. Astronomical detectors have photosensors that convert the photons of light to electrical energy. This is analogical to the eye retina (rods and cones).
Which of the following describes a possible theme? Scout tells the history of the town. Jem had his arm broken at thirteen. There are different kinds of bravery. Dill dares Jem to touch the Radley house.
There are different kinds of bravery.
The correct answer is option C, There are different kinds of bravery.
Reason -
Theme usually represents the learning’s from the lessons or the poem. The theme is the conclusion of the entire story and some time with in a subjected work there can be more than one theme. Here in this case “There are different kinds of bravery” can be considered as a learning from an article or story, while other options just represents an instance from the same story or lessons.
The deadliest disease in india was kala mari (black death), also known as
Which is not a specific function of the right hemisphere of the brain?
Final answer:
The specific function not associated with the right hemisphere of the brain is language processing, as the left hemisphere primarily controls these verbal abilities.
Explanation:
The question asks which function is not specific to the right hemisphere of the brain. The right hemisphere is known for its capabilities in recognizing objects, including faces, patterns, and melodies. It excels in perceptual skills and can efficiently complete tasks like putting puzzles together and drawing pictures. On the other hand, verbal abilities, including the ability to speak, write, and understand language, are predominantly located in the left hemisphere. Therefore, the specific function that is not associated with the right hemisphere is language processing.
This distinction between hemispheres illustrates the brain's lateralization, where different functions are predominately controlled by one hemisphere over the other. While the right hemisphere excels in spatial and nonverbal reasoning, it has very limited verbal abilities, pointing to the specific function of language processing as not being a specific function of the right hemisphere.
Knowledge of human genes gained from research on the structure and function of human genetic material has led to improvements in medicine and health care for humans. Identify one specific concern that could result from the application of this knowledge
Final answer:
The primary concern from the use of human genetic knowledge is the potential for genetic discrimination and the ethical implications of human genetic engineering.
Explanation:
Research on the structure and function of human genetic material has ushered in many advancements in medicine and healthcare. However, there is a specific ethical concern that arises from the application of this knowledge, particularly the potential for genetic discrimination. This involves treating individuals differently based on their genetic information, which could impact employment, insurance, and other areas of life. Another concern is the possibility of human genetic engineering, which raises profound ethical issues about the modification of human traits.
Jake wants to enrich the nitrogen content of his soil through fixation. Which crop can he use for this purpose? wheat sugarcane cashew nuts alfalfa
A condition in which inadequate intake of vitamin b12 or folic acid causes production of large abnormal red blood cells is called
In order for transcription to happen, DNA must
Answer: Unwind
Explanation: Transcription is a process where a DNA strand is used to make a copy of mRNA. A complementary mRNA strand is made from the DNA strand. This mRNA is then later used to make proteins. In this process the junk information, present in DNA in form of introns is also spliced.
DNA is a double stranded structure, which is present in helical structure and both the strands are twisted together. In order to make the mRNA copy with the help of the enzyme RNA polymerase, DNA must open up. Then only RNA polymerase will be able to access the nucleotides of DNA.
A recent encyclopedia entry about dogs cites multiple research papers done by scientists at veterinary schools. According to the article, Labrador retrievers come in two specific breeds: English and American. The English breed is described as stocky and heavy, while the American breed is described as tall and lanky. The article describes current scientific research as showing that males of both breeds usually weigh about 29-41 kg (65-90 lb), and females weigh 25-32 kg (55-70 lb). Coat colors for both breeds come in solid black, yellow, or chocolate. All labs have strong tails and webbed feet, which help them swim. Devon would like to use this information to determine if his new dog is an English or American Labrador retriever. Which best describes the reliability of the information?
Which describes genetic information prior to the beginning of mitosis?
The correct answer is Chromatin.
Chromatin refers to the complex of proteins and DNA, which develops chromosomes inside the nucleus of eukaryotic cells. DNA is not visible in the free linear strand; it is enveloped around the nuclear proteins and is highly condensed so that to get fit within the nucleus.
The basic structural unit of chromatin is nucleosome. Due to its composition, it describes the genetic information before the start of mitosis.
Why is it so important to be able to amplify dna fragments when studying genes? dna fragments are too small to use individually. a gene may represent only a millionth of the cell's dna. restriction enzymes cut dna into fragments that are too small. a clone requires multiple copies of each gene per clone?
Answer: Option A
Explanation:
It is important that the fragment of DNA should be amplified in order to get an optimum of DNA which is to be used for any purposes. While performing any experiment or using the DNA for research purposes requires DNA in a amount which is easily used for experiment.
A small size of DNA or a fragment of DNA is not suitable for the experiment. Any detection of bacterial growth, et cetera requires DNA in an optimum amount.
So, it should be amplified prior to the experiment.
A scientific hypothesis must be both ______and capable of being proved false
Answer:
Testable
Explanation:
A hypothesis refers to a testable statement that is made about the nature of particular observation or relationship. It is testable, that is, hypothesis can be tested for being true or false by experimentation. If the results of the experiment are in accordance with hypothesis, it is accepted. On the other hand, if the results do not explain the hypothesis, it is proved false.
A scientific hypothesis must be both testable and capable of being proved false.
A scientific hypothesis must be both testable and capable of being proved false.
A hypothesis is a tentative explanation or prediction that can be tested through experiments or observations.
It should be possible to design experiments or make observations that have the potential to disprove the hypothesis.
For example, if a hypothesis states that all swans are white, it can be tested by observing swans in different locations.
If a researcher finds a black swan, it would disprove the hypothesis.
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When a species is made up of different smaller groups, each of those smaller groups is known as a ____.
Answer:
variety
Explanation:
Which lobe of the cerebral cortex is most directly involved in touch and body position?
The lobe in the cerebral cortex which corresponds to the touch and body position is the Parietal Lobe. It is placed in the middle portion of the brain. A part of the brain called somatosensory cortex is situated in this lobe which is important in dealing the body’s senses.
A new cell membrane is formed when the cytoplasm pinches together during this stage of the cell cycle.
How can the nurse determine a patient's history of allergies? (select all that apply.) by administering a dose and monitoring the patient's response by looking at the front of the chart or in the patient's electronic medical record (emr) by asking the patient by looking at the mar by looking at the patient's allergy bracelet?
Why is primary production and animal life concentrated at the surface in pelagic regions of the open-ocean?
Are carriers that consist of monoglycerides, fatty acids, and lecithin, and serve to transport digested fats from food to the intestinal cells.
Which series correctly lists the order of species (from a to
e.that belong on the timeline?
Answer:
The correct answer is A. afarensis, A. africanus, H. habilis, H. erectus, H. sapiens
Explanation:
Eukaryotic cells differ from prokaryotic in that they contain cellular _______.
A. energy
B. organelles
Medicines in the body interact with the body proteins. how might normal variations in your genes affect your response to different medicines
Genetic variations affect how an individual responds to medicines by influencing the rates at which drugs are activated and deactivated, which can affect drug efficacy and side effects. Understanding these variations is key to personalized medicine and optimizing treatment plans.
Normal variations in your genes can significantly affect your response to different medicines due to the field of pharmacogenomics, which studies how genetic variations influence an individual's reaction to therapeutic drugs.
Mutations in genes that code for drug-metabolizing enzymes can lead to variations in drug activation and deactivation rates. For instance, if these enzymes activate a drug too slowly, standard doses may be less effective. Conversely, if enzymes deactivate a drug too slowly, the drug might remain in the system at high levels and cause side effects. Furthermore, genetic variations can determine the appropriateness of drug dosages, leading to more personalized and effective treatment plans.
Therefore, understanding genetic variations is essential in personalizing medicine, which aims to tailor treatment based on an individual's unique genetic makeup, potentially improving efficacy and reducing adverse reactions to medications.
In the image, two cookies are used to model tectonic plates. Which plate boundary does this model represent? convergent boundary divergent boundary transform boundary none of these
Answer:
The correct answer is the divergent boundary.
A divergent boundary, in plate tectonics refers to a linear characteristic, which prevails amid the two tectonic plates that are moving away from each other. The Mid-Atlantic Ridge and the Great Rift Valley are the examples of divergent boundaries.
Iceland is an illustration of a country going through a continental divergent boundary. The Mid-Atlantic Ridge differentiates Iceland and is the boundary between the Eurasian and the North American tectonic plates.
In the given image, the model represents a divergent plate. Therefore, option B is correct.
What are divergent boundaries?Divergent boundaries are a type of tectonic plate boundary where two plates are moving away from each other. This movement causes tension to build up in the Earth's crust. It leads to the formation of a variety of geologic features, including rift valleys, mid-ocean ridges, and volcanoes.
At divergent boundaries, magma rises up from the mantle to fill the gap created by the plates moving apart. As the magma cools, it forms a new crust. This crust pushes the old crust away on either side of the boundary.
This process of seafloor spreading is responsible for the formation of mid-ocean ridges, which are underwater mountain ranges that extend for thousands of kilometers. Thus, option B is correct.
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Your question is incomplete, most probably the full question is this:
In the image, two cookies are used to model tectonic plates. Which plate boundary does this model represent?
A. Convergent boundary
B. Divergent boundary
C. Transform boundary
D. None of these
The image is attached below:
A client underwent a mastectomy 24 hours ago. which information will the nurse include in the plan of care?
Answer:
Mastectomy refers to a surgery in which the whole breast of the patient is removed. There are five distinct kinds of mastectomy. These are modified radical mastectomy, total mastectomy, partial mastectomy, radical mastectomy, and subcutaneous mastectomy.
After the surgery, the patient is instructed by the nurse to perform daily arm exercises, as if the axillary nodes are withdrawn, the affected arm may swell, and would become more vulnerable to infections. The patient is taught to assess the appearance of incision and site of the drain and to change dressing.
The patient is instructed to not raise the arm or elbow above the shoulder and to not abduct the affected arm until the drains completely get withdrawn. The patient is told to not use deodorants, to prevent wearing of jewelry and constricting clothing on the affected arm, and to carry the handbag on the unaffected arm.
A 79 year-old male resident of a long term care facility has contracted clostridium difficile and is experiencing consequent diarrhea. auscultation of the man's abdomen indicates hyperactive bowel sounds. what processes in the man's small intestine is most likely accompanying his current status?
The model is a diagrammatic representation of a plant cell. In which location does glycolysis occur in the cell?
Answer:
It occurs in the Cytoplasm.
Which statement most accurately explains how allosteric regulation can change an enzyme's catalytic activity?
Out of the following given choices;
In allosteric inhibition, a regulatory molecule binds to a location other than the active site, resulting in a change in enzyme shape that allows the active site to bind substrate.
In allosteric activation, a regulatory molecule binds to a location other than the active site, resulting in a change in enzyme shape that allows the active site to bind substrate.
In allosteric inhibition, a regulatory molecule binds to the active site, blocking substrate binding.
In allosteric activation, a regulatory molecule binds to the active site, allowing substrate binding.
The answer is B. When an effector molecule binds to an allosteric site, the enzyme changes conformation causing the enzyme to have a high affinity for its ligand at the active site. A good example to explain allosteric regulation is hemoglobin (which is not an enzyme though). The subunits of the hemoglobin have allosteric effects on each other. When oxygen binds to one subunit, its conformation change causing the subunit to bind to the allosteric site of adjacent subunits. This subsequently causes the other subunits to have more affinity for oxygen in their oxygen-binding active sites.
Each cerebral hemisphere can be roughly divided into four lobes. which lobe processes auditory information?