Answer:
The correct answer is
D. yes-or-no questions about easily observable characteristics.
Explanation:
just took the test from E D G E and got 100%
hope this helps :D
Yes-or-no questions about easily observable characteristics. So, the correct option is D.
What are Dichotomous keys?A dichotomous key is defined as a device designed by scientists to help its users identify a particular type of object and organism based on physical characteristics.
A dichotomous key is divided into two sections which usually contain specific questions with two options that are yes or no in each step. When a question is answered, the key directs the user to ask the next question until the user is able to correctly identify the name of the unknown organism.
Thus, Yes-or-no questions about easily observable characteristics. So, the correct option is D.
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Write the numbers in the correct order to sequence the food through the digestive tract. 1- Peristalsis begins in the esophagus. 2- Food is pushed into the throat with the tongue. 3- Epiglottis closes to allow food to pass to the esophagus. 4-Chyme mixes with digestive enzymes. 5- Esophageal sphincter allow food to pass to the stomach. 6- Food is mixed with digestive juices forming the chyme that moves to the small intestine. 7- Stool moves to the rectum then to the anus. 8- Digested nutrients move to the blood. 9- Water is absorbed and waste is transformed into the stool. 10- Waste product moves into the large intestine. )
Answer:
2: food is pushed into the throat with the tongue, 3 epiglottis closes to allow food to pass esophagus, 1 peristalsis begins, 5 esophageal sphincter allow food to pass, 6,4,10, 9,7,8
Explanation:
The karyotype reveals that the aliens have a total of 200 chromosomes in each somatic cell. Assuming this alien reproduces sexually, how many chromosomes would its gametes have?
Answer:
100
Explanation:
in sexually reproduction gametes are formed by meiosis where number of chromosome is reduced by half(haploid gametes)
Michael, a new lab analyst, receives an email notifying him that his expected samples from a recent outbreak should be arriving soon. To prepare for his analysis, he decides to look into what type of diseases could be spread between animals and humans, as this is a new field for him. Michael has received limited information about the details of the outbreak from the epidemiologists that traveled to the site, but he does know that both animals and humans were infected by some type of virus. Michael looks through some of the lab manuals on how the samples will be handled once in the lab. While reading through these guidelines, he realizes that there are some terms he is not quite sure of.
Below are sentences that reflect the terms that Michael had to acquaint himself with while reading through the published guidelines from his laboratory. Please review the sentences below and fill in the blanks with the correct word(s).
a. arthropods
b. togaviruses
c. encephalitis
d. arbovirus
e. flaviviruses
f. zoonosis
A virus that is able to be transmitted via _________like ticks, flies, and mosquitoes is considered __________.
2. Some arboviruses are able to move through the bloodstream and infect the brains of humans and arbovirus animals. This disease manifestation is called __________.
3. A_______ is a disease that can be transmitted from animals to humans.
4 Several encephalopathies, such as Eastern equine encephalitis and West Nile virus encephalitis, are caused by the____________ These viruses can infect humans and and animals such as horses and birds.
Answer:
the correct option is:
A virus that can be transmitted through arthropods such as ticks, flies, and mosquitoes is considered an arbovirus.
2. Some arboviruses can move through the bloodstream and infect the brains of human and animal arboviruses. This manifestation of the disease is called encephalitis.
Explanation:
Arboviruses are very dangerous for humans, some do not generate painful bites, others are hematofogous (they feed on human blood) and others are nocturnal, which bite humans at night without their perceiving it.
Diseases of these viruses that are transmitted by vectors such as arthropods cause encephalitis, cardiac, pulmonary disorders, etc.
An example of this is the Chagas disease that is generated by the transmission of the Vinchuca arthropod.
What do you think would happen if there was more glucose (sugar) than available NAD+? Explain.
Answer:
n people who have developed diabetes, glucose builds up in the blood, resulting in hyperglycemia. ... And, too much sugar in the bloodstream can cause other types of damage to body tissues, which can increase the risk of heart disease and stroke, kidney disease, vision problems, and nerve problems in people with diabetes.
Explanation:
Which of the following is the largest known gravitationally bound structure in the universe?
Which of the following is the largest known gravitationally bound structure in the universe?
Galaxy
Cluster
Solar system
Local Group
Answer:
Cluster
Explanation:
A cluster is the largest gravitationally bound object in the universe.
Answer:
Cluster
Explanation:
A cluster is the largest gravitationally bound object in the universe.
Which of the following areas indicates the occipital lobe on the diagram below? Region A is the anterior (front) section. Region B is the medial (middle) superior (up) section. Region C is the posterior (back) section. Region D is the medial (middle) inferior (down) section. Region D Region B Region C Region A
Answer:
Region C is the posterior (back) section.
Explanation:
Hope it helps.
The area which indicates the occipital lobe on the diagram below Region C is the posterior (back) section.
What area is present in the occipital lobe?
The occipital lobe is the visible processing area of the brain. It is associated with visuospatial processing, distance and depth detection, color determination, object and facial recognition, and memory formation.
Where can the occipital lobe be found?In the Back Area of each cerebral hemisphere.
Where is the place seen?
occipital lobe
The visual cortex is located in the occipital lobe of the brain and is primarily responsible for interpreting and processing visual information obtained from the eyes. The amount of visual information obtained and processed by the visual cortex is truly large.
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The ____ is a small thin-walled tube that leads from the floor of the urinary bladder to the outside of the body. Group of answer choices
Answer:
Urethra
Explanation:
I'm pretty sure it would be the urethra but if it's not let me know.
The urethra is a small thin-walled tube which leads from the floor of the urinary bladder to the outside of the body.
What is the excretory system?Human excretory system includes organs that facilitate the removal of nitrogenous wastes out from the body. The main excretory organs in the human body include kidney, ureter, urinary bladder and urethra. Kidneys are the organs which filter blood and urine is the filtrate obtained that is excreted out of the body.
The urethra is the small thin-walled tube that lets urine leave from bladder and the body. In the males, urethra passes through the prostate gland. In the females, the urethra is much shorter. It runs from the bladder to open in front of the vagina.
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1. Hypothesize in what type of environments it would be advantageous for a protist to be autotrophic, heterotrophic, or mixotrophic.
Answer:
See below
Explanation:
Protists fall into the category of eukaryotes. They are diverse in nature and typically are found to be single celled organisms containing very organized structures.They are classified based on what is their source of nutrition.
Autotrophic - capable of photosynthesis to produce their own food, so an environment where sunlight, CO2 and water is available.
Heterotrophic - feed on other organisms , an environment where prey is plenty and very limited or no access to sunlight.
Mixotrophic - a combination of the above two, an environment with all of the aforementioned factors present.
What must occur for protein translation to begin? A water molecule must be added to the protein chain. A peptide bond must form between subunits of mRNA. The amino acid Cys must be picked up by tRNA. The codon AUG must be identified.
For protein translation to begin, the codon AUG must be identified.
PROTEIN SYNTHESIS:
Protein synthesis is the process whereby living organisms synthesize proteins using the information stored in their DNA. Protein synthesis involves transcription and translation. Transcription occurs in the nucleus where DNA is used as a template to synthesize mRNA. Translation occurs in the ribosome where mRNA transcript is used to synthesize amino acid sequence. During translation, mRNA codons are read and binded to by the anticodons of a tRNA molecule.However, for translation to begin, a specific mRNA codon called START CODON with the sequence: AUG must be identified first.
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Answer: The correct answer is The codon AUG must be identified.
Explanation: Confirmed correct. :)
Describe the sizes of the sun, moon and Earth models given to the participants. Before embarking on the actual activity, what did the participants learn as a result of the size of the models?
Answer:
(A). (1).SUN AND EARTH= the distance between the sun and the earth is about 0.5 miles.
(2). MOON AND SUN: the distance between the moon and the sun is about 400m.
(B). Kindly check Explanation.
Explanation:
PART A:
(GIVEN TO THE PARTICIPANTS) DESCRIPTION OF THE DISTANCES SIZES OF;
(1).SUN AND EARTH= the distance between the sun and the earth is about 0.5 miles.
(2). MOON AND SUN: the distance between the moon and the sun is about 400m.
PART B = what did the participants learn as a result of the size of the models?
The participants learnt if they so wish to make the size of the moon to be equal to that of the sun, the people or the participants have to move or go back because initially to them(participants) they thought that if are able to move the moon to the sun, it will be equal.
How did the research presented in the article affect scientists’ understanding of the evolution of eukaryotes.
Answer:
Archaea and eukaryotes are very closely related than bacteria and eukaryotes. because both archaea and bacteria responsible for the formation of more complex cells
Explanation:
It has been believed for many years that archaea and eukaryotic cells are genetically related to a developmental process that involves the production of eukaryotic cells by archaea development. At the same time, scientists believe that archaea have more to do with eukaryotic cells than bacteria. This is because research shows that bacteria are also closely related to eukaryotic cells, meaning that along with archaea, bacteria are part of the evolutionary process that makes up these cells.describe the process involved when the human eye views an object
Answer:
How the eye view an object.
As the object appear before the eye,
Light enter the cornea, the domeshape that cover the front eye.
The light then enter the pupil through the cornea.
The light then hit the eye lens, a transparent structure that focuses the light through the virteous humour, a gel like substance that surrond the retina.
The retina then receive the light that was focused by the eyes lens and transform it to electrical impulses.
The electrical impulses is then transmitted to the person through the optic nerve,
The optic nerve then interpret it as the object view.
Explanation.
Eyes are organs of the visual system. They provide both humans and animals with the ability to receive and process visual information, thereby enabling different photo response functions that are independent of vision. Eyes detect light and convert it to electrical impulses in neurons. The optic nerve then send it to the brain which is then is interpreted as what is seen.
How the eye view an object.
As the object appear before the eye,
Light enter the cornea, the domeshape that cover the front eye.
The light then enter the pupil through the cornea.
The light then hit the eye lens, a transparent structure that focuses the light through the virteous humour, a gel like substance that surrond the retina.
The retina then receive the light that was focused by the eyes lens and transform it to electrical impulses.
The electrical impulses is then transmitted to the person through the optic nerve,
The optic nerve then interpret it as the object view.
What are striations, and how do they form?
Answer:
Striations or striae are scratches or small elongated grooves in bedrock or on clasts that are the product of abrasion . Clasts protruding out of basal sliding ice are dragged along bedrock surfaces producing the marks. The rate of abrasion depends on the effective force with which individual clast fragments are pressed against the bed, the flux of fragments over the bed, and the relative hardness of rocks in the ice and of the bed (Hallet, 1979). Hallet (1979) also noted that where geothermal heat flow or frictional heating are high, or where the ice is extending, the rate of abrasion should be higher. He also noted that glacier thickness has no affect on abrasion, and hence on the nature of striation morphology.
Explanation:The presence of striations is a reflection of the spatial and temporal variations in the stresses exerted by rock fragments entrained in basal ice, as well as a representation of glacier sliding (e.g., Boulton, 1974; Kamb et al., 1976; Hallet, 1979, 1981; Shoemaker, 1988; Iverson, 1991). The greater the stresses exerted, the greater the promotion of crack growth and brittle failure, and the deeper and wider the striae tend to be (Drewry, 1986).
Classify the following organisms into their respective kingdoms (i) Yeast (ii) Penicillium (iii) Rhizobium (iv) Mushroom (v) Amoeba (vi) fish
Answer:
(i) Yeast- Kingdom Fungi
(ii) Penicillium- Kingdom Fungi
(iii) Rhizobium- Kingdom Eubacteria
(iv) Mushroom- Kingdom Fungi
(v) Amoeba- Kingdom Protista
(vi) fish- Kingdom Animalia
Explanation:
Living organisms were classified into a large group called KINGDOM, which represent the largest and most generic grouping consisting of organisms that share a few similarities. The kingdoms that living organisms were classified into are as follows: Plantae, Animalia, Fungi, Protista, Eubacteria, Archaebacteria, etc.
Based on the question, the mentioned organisms are classified into the following kingdoms:
(I) Yeast: Yeast is a unicellular microbe classified under the Kingdom Fungi due to possession of chitin in its cell wall and other similar features with members of kingdom Fungi.
ii) Penicillium- Penicillium is a genus classified under the Kingdom Fungi.
(iii) Rhizobium- Rhizobium is a genus of prokaryotic organism (lack membrane-bound nucleus and organnelles) classified under the Kingdom Eubacteria.
(iv) Mushroom- Mushrooms are saprophytic (heterotrophic) species of organisms classified under the Kingdom Fungi.
(v) Amoeba- Amoeba is a genus of unicellular eukaryotes classified under the Kingdom Protista.
(vi) fish- Fishes are organisms classified under the Kingdom Animalia
The genomic DNA of an organism has a base composition of 40% C-G base pairs and 60% A-T base pairs. Assuming a random sequence of bases, what is the expected frequency of the Tsp E1 restriction sites 5'-CCGG-3'?
Answer:
The correct answer is (0.2)^4.
Explanation:
Based on the given information, the given genomic DNA is A-T rich, and the base pair composition is C-G = 40 % and A-T = 60%. Therefore, as per Chargaff's rule, Each C and G will possess 20%, and each A and T will possess 30%.
Therefore, the probability of each base will be,
C = 20/100 = 0.2
G = 20/100 = 0.2
A = 30/100 = 0.3
T = 30/100 = 0.3
Now the expected frequency of the Tsp E1 restriction sites 5'-CCGG-3' will be 0.2 * 0.2 * 0.2 * 0.2 = (0.2)^4.
What type of feedback loop is breathing?
In both photosynthesis and respiration, _______ synthesis is coupled to the diffusion of protons across a membrane from high to low concentration.
Answer:
ATP is the answer
Observations of organisms include descriptions of why the organism has certain traits. descriptions of the number, size, and arrangement of parts of the organism. conclusions made about the characteristics of an organism. conclusions made based on an organism’s DNA.
Answer:
The correct statement is descriptions of the size, number and arrangement of parts of the organism.
Explanation:
The act of obtaining information from a suitable primary source is termed as an observation. It is the very initial step in the array of steps that comprises a scientific method and it incorporates the recording of data regarding an observed natural process.
Observation permits the researchers to inquire regarding the apposite scientific questions, to produce an applicable hypothesis, and to set up significant experiments, which will provide suitable answers to the queries asked earlier.
Answer:
B. descriptions of the number, size, and arrangement of parts of the organism.
Explanation:
took the test, hope this helps.
What is the behavioral biology, ethology, and comparative psychology?
Answer:
Comparative psychology and ethology psychology are both about animal science ( that is all i know about behavioral biology, ethology, and comparative psychology )
Glycogen Synthase Kinase:_______.
A. Will only phosphorylate glycogen synthase (GS) after GS has been phosphorylated by casein kinase.
B. Phosphorylates glycogen phosphorylase
C. Phosphorlyates Casein Kinase.
D. Is activated by the insulin signaling pathway.
Answer:
A. Will only phosphorylate glycogen synthase (GS) after GS has been phosphorylated by casein kinase.
Explanation:
Glycogen synthase kinase (GSK) is a type of enzyme capable of phosphorylating serine and threonine residues on the glycogen synthase (GS). The insulin hormone activates the synthesis of glycogen by dephosphorylating GS, but it is a mechanism that depends on the previous phosphorylation of GS by Casein Kinase (CK). GSK is also known to phosphorylate the insulin receptor (IRS), and thus controlling glucose metabolism.
What makes ribosomal RNA useful as a molecular clock? (2 points) A large portion of the DNA ring is not vital to structure or function, allowing it to accumulate neutral mutations. Its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. A slow mutation rate makes it useful for determining evolutionary relationships between ancient species. It is only found in select organisms, making it easier to compare relationships between species that have it.
Answer:
The correct statement is that a slow mutation rate makes it useful for determining evolutionary relationships between ancient species.
Explanation:
The rRNA or ribosomal RNA has an application as a molecular clock because of many factors. It exhibits a very slow mutation rate, that is, around one million years because of which it stays highly conserved in all the organisms. In the ribosomal RNAs of two organisms, the degree of mutations can be associated directly with the time they were originated in the past.
In supplementation, it possesses essential biological function because of which it can be witnessed in almost all the species.
Answer:
A slow mutation rate
Question 18 (5 points)
Farmers have taken advantage of some plants that car
fertilization. This process allows plants to grow much faster and is known as
A) vegetative reproduction.
OB) alternation of generations.
C) fruit reproduction
D double fertilization
Answer:
Vegetative reproduction
2. Exocrine glands, such as sweat glands, secrete fluids
glands secrete hormones directly into the bloodstrea
3. The _______ gland plays an important role in puberty
4. Epinephrine, triggering the "fight or flight" response
glands, which sit on top of the kidneys.
5. Most glands that secrete hormones operate using fe
When hormone concentrations are high, the gland w
the hormone.
6. Many cells produce chemicals called_____ hormon
impact inflammation and reproduction.
7. The gland that helps regulate growth, body temperat
lod the
Answer:
pituitary gland
Prostaglandins
oestrogen and testosterone
Explanation:
The pituitary gland plays an important role in puberty. Puberty refers to the time in which a boy or girl sexually mature. Many cells produce chemicals called Prostaglandins hormone which impact inflammation and oestrogen and testosterone are the hormones which is responsible for the maturation of eggs in female and sperm in male. these hormones plays a vital role in the growth and development of human body.
Answer:
1.Hormones
2. endocrine
3. pituitary
4. adrenal
5. less
6. prostaglandins
7. thyroid
8. Steroidal hormones enter the cell directly and interact with DNA inside the nucleus. These hormones change gene expression, affecting the RNA that is produced and the proteins that are translated in a cell. Nonsteroid hormones do not enter the cell. Instead, they bind to specific receptors on the outside of the cell membrane. This triggers molecules called secondary messengers, such as cAMP, to begin their work of relaying information in the cell, where other chemicals, messengers, and proteins are involved to create a cellular response.
Explanation:
Penn Foster
narrowing of the coronary arteries due to buildup of debris along the artery
Answer:
The correct answer is coronary artery disease.
Explanation:
The narrowing of blockage of the coronary arteries, generally resulting due to atherosclerosis is known as coronary artery disease. Atherosclerosis also is known as the clogging or hardening of the arteries and is the accumulation of fatty deposits and cholesterol on the artery's inner walls.
These fatty deposits of plaques can prevent the flow of the blood to the muscles of the heart by physically choking the artery or by resulting in unusual artery function and tone. In the absence of a sufficient supply of blood, the heart becomes deficient of the essential nutrients and oxygen it requires to function appropriately. This can further result in angina or chest pain.
In many states, gypsy moths are harming human residents and industries. Revise your explanation to the question in part C to explain how gypsy moths can negatively affect humans.
Answer:
Gypsy moth is a pest which destroy trees.
Explanation:
Gypsy moths are harming human residents and industries because gypsy moth is a pest which destroy trees which are present in human residents. These trees are responsible to clean the environment if these trees are destroyed, the health of the people are adversely affected. It also destroy many important crops such as cotton crop so the destruction of cotton crop leads to the destruction of textile industry. Its caterpillar also produces toxin which affect human skin when they comes in contact.
Answer:
The rise of the gypsy moth population will eventually kill many trees, as they won’t be able to perform photosynthesis. This event will negatively affect the lumber and construction industries, as well as the beauty of public and private landscapes.
Explanation:
Answer on edmentum.
Unit Test
How does increasing the distance between charged objects affect the electric force between them?
O The electric force increases because the distance has an indirect relationship to the force.
The electric force increases because the distance has a direct relationship to the force.
O The electric force decreases because the distance has an indirect relationship to the force.
O The electric force decreases because the distance has a direct relationship to the force.
Answer:
C. The electric force decreases because the distance has an indirect relationship to the force.
Explanation:
The electric force decreases because the distance has an indirect relationship to the force. Therefore, the correct statement is option C.
What happens when the distance between two charged items grows?As the distance between two charged items grows, the electric force between them diminishes. Because of the inverse square law, which states that the force of attraction or repulsion between two charged objects diminishes as the square of the distance between them rises, this is the case.
The force exerted by two charged objects will be decreased to one-fourth of its initial strength if the distance between them doubles. Similar to this, if the distance is quadrupled, the force loses 90 percent of its initial power. As a result, the electric force between charged objects lessens with increasing distance.
The farther the distance between charged objects, the weaker the electric force between them becomes due to the decrease in the strength of the electric field. This relationship follows an inverse square law.
Therefore, electric force decreases because the distance has an indirect relationship to the force.
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Donor Blood Type Recipient Blood Type A- Successful
A+ A-
O- AB+
Would the above two transfusions be successful or would either of them harm the recipient? For each transfusion, explain your reasoning. In your explanations, use the following terms: antigen, antibodies, and agglutination.
Answer:
The first blood transfusion in which the donor blood type is A+ and recipient blood type is A- would not be successful as the donor blood is A+, which signifies that the blood comprises both Rh factor and antigen A, while the recipient blood group is A-, which signifies that the blood does not comprise Rh factor and possess only antigen A. Therefore, at the time of transfusion, the Rh factor of donor blood will be regarded as a foreign body by the recipient, and thus, will generate antibody against the donor Rh factor provoking immune rejection and agglutination.
On the other hand, the second blood transfusion in which the donor blood type is O- and the recipient blood type is AB+, the blood transfusion would be successful as the blood group O- is a universal donor, as it neither possesses any A or B antigen nor Rh factor. This blood group is accepted by all the blood group recipients.
Somatic cells in elephants have 56 chromosomes. How many chromosomes would be carried by the gametes produced by elephants
Answer:
As somatic cells are diploid (2n) 2n=56
gametes receive only haploid set so, n=28
The number of chromosomes carried by the gametes produced by elephants would be : 28
Given that The elephants posses 56 chromosomes in its somatic cells and somatic cells are known as diploid cells ( i.e. 2n ) while the gametes will only carry a haploid set of chromosome ( i.e. n ).
Determining the number of chromosomes contained in the gametes
since ; 2n ( chromosomes of a somatic cell ) = 56
∴ n ( chromosomes contained in a gamete ) = 56 / 2 = 28
Hence we can conclude that The number of chromosomes carried by the gametes produced by elephants would be : 28.
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Which mode of genetic recombination is matched correctly with its description? transduction—virus transfers genes from one bacteria to another conjugation—involves splitting of one cell and results in two identical cells binary fission—requires direct cell-to-cell contact of bacteria transformation—uses a pilus to transmit genetic information between bacteria
Answer:
transduction—virus transfers genes from one bacteria to another
Explanation:
Transduction is a mechanism of recombination where DNA fragments are inserted into bacteria by a viral vector. The mechanism of transduction is commonly used by molecular biology laboratories to insert gene fragments into both bacterial and mammalian cells.
Conjugation is the genetic mechanism in which bacteria transfer genetic information among them by direct contact.
Binary fission is the most common type of asexual reproduction in bacteria. In binary fission, the DNA molecule is replicated and, subsequently, the bacterial cell is divided into two daughter cells with identical genetic material.
Finally, the transformation is the mechanism of horizontal gene transfer in which one bacterium takes up genetic information into the surrounding environment and incorporates it into its genome.
Answer:
transduction—virus transfers genes from one bacteria to another
Explanation:
edge
Properties of water Classify each statement as an example of adhesion, cohesion, or surface tension. Match each statement to the appropriate category.
a. A sewing needle floats when it is placed gently on top of water in a bucket.
b. Water molecules ding to plant cell walls. A water strider runs across a pond without breaking the surface.
c. A drop of water spilled on a table forms a drop on the table, rather than spreading out over the surface.
d. Water molecules cling to the side of a beaker. Water molecules are attracted to each other.
Answer:
c
Explanation: