Answer: True
Explanation:
Why are the seminal vesicles important for human reproduction
Answer:
Seminal vesicle secretion is important for semen coagulation and may promote sperm motility, increase stability of sperm chromatin, and suppress the immune activity in the female reproductive tract.
Explanation:
Copy and paste the paragraph into Google, and you will get an article on the topic.
How did the Rf values differ between pigments and solvents?
Answer:
The Rf values indicate how soluble the particular pigment is in the solvent by how high the pigment moves on the paper.
Explanation:
The Rf values indicate how soluble the particular pigment is in the solvent by how high the pigment moves on the paper. Small Rf values tend to indicate larger, less soluble pigments while the highly soluble pigments have an Rf value near to one.
Hormones are chemical molecules produced by endocrine glands. One such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. Which two statements describe the probable reason for the function of the hormone? A)The cells in the heart have specific receptors that allow for the intake of hormones. B) The heart and the endocrine glands have the exact same types of cells. C)All cells make the same types of hormones. D)Thyroid hormones show their effect on the heart by means of specialized cells. E) Thyroid cells and cardiac cells have different DNA.
Answer:
i think option d is correct answer because it helps in the management of heart beat , blood pressure etc.
Compare and contrast the characteristics of the ideal tissue forming the outer surface of the body with that forming the lining of the small intestine. How are they similar and different? What tissues fulfill these needs?
The tissue that forms the outer surface of the body is a stratified squamous keratinized epithelium. The surface layer of dead cells(stratum corneum) is made to keep things out of the body, protecting it. The tissue that lines the digestive tract(e.g. intestine). Is made from 1 layer of columnar cells that facilitate the absorption of nutrients. Both tissues are epithelia.
The tissue that forms the outer surface of the body is a stratified squamous keratinized epithelium.
It should be noted that the cells on the surface of stratified squamous keratinized epithelium are very flat. The surface layer of dead cells is vital for protecting the body.
The tissue that lines the digestive tract that is, the intestine is made from a layer of columnar cells that is important for the facilitation of the absorption of nutrients.
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There are two properties of phospholipids that affect how tightly they pack together: the length of the hydrocarbon chain and the number of double bonds. The degree of packing, in turn, influences the relative mobility of these molecules in the membrane. Which of the following would yield the most highly mobile phospholipid (listed as number of carbons and number of double bonds, respectively)?
(a) 24 carbons with 1 double bond
(b) 15 carbons with 2 double bonds
(c) 20 carbons with 2 double bonds
(d) 16 carbons with no double bonds
Answer:
Explanation:It’s d
The Investigation
It’s your first day shadowing a detective, and already it’s been interesting…if you can call the murder of a young woman interesting. You’ve been trying to detach yourself by reading the file, but you have interviews later this morning and you’re nervous. Going back to the file, you jot down some notes on what you know so far.
Melissa was a 35-year-old nurse-midwife with over ten years’ experience delivering babies both in hospitals, as well as in homes when risk for complications were low. She was healthy; her only medical condition was an allergy to bee stings. The body was discovered by her boyfriend when he came over for a planned dinner. The dinner – spaghetti – was laid out, but no cooking had begun. There was also a plate of cupcakes, with a bite out of only one of them. The boyfriend said Meleea had not mentioned feeling unwell when they spoke earlier in the day. She was, however, tired, and understandably upset about a long birth she had assisted with where a mother had died in childbirth.
The medical examiner did not have results yet, so you sketch out some questions you have for the interviewees.
1. Who would you interview, and what would you ask?
2. Do you have any hypotheses about what happened to Meleea? Write at least one or two possibilities.
1. I would interview the boyfriend and family members of the mother who died in childbirth. I would ask where they were at time time of death and if they have an alibi.
2. There could have been something put in the cupcakes, since only one bite was taken from a single one.
Based on what you know of bone features, what do you think this canal is for? Why would we need a hollow space in this area of this bone?
Answer:
The mandibular canal, also referred to as the Inferior Alveolar Canal (IAC), sits within the mandible. It serves the purpose of housing the inferior alveolar nerve which is responsible for supplying sensation to the lower teeth.
This canal also houses the inferior alveolar vein - a dental vein whose function is to (with the assistance of the posterior alveolar artery) drain blood from the lower teeth and jaw.
A picture of the mandibular canal is attached.
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Which structure of a paramecium is analogous to a “reserve copy” of all the cell’s genes
Answer:
micro nucleus
Explanation:
. Some people have developed allergies to animal insulin. Explain why the immune system would be able to distinguish animal insulin from human insulin
Answer: Difference between animal and human insulin and/or not being properly purified.
Explanation:
Insulin is a hormone that regulates the metabolism of secreted by the β-islet of Langerhans cells of the pancreas. It that allows blood sugar, known as glucose, to pass into cells. Glucose comes from the food and drinks and it is the body's main source of energy. So, insulin plays a key role in maintaining proper blood glucose levels.
Animal insulin is produced by the pancreas of animals, usually cows and pigs. Then, the insulin is purified to reduce the chance of the insulin user developing a reaction to the insulin.
Each organism has its own genetical identity and any foreign particle is treated as an antigen. And, there is small chemical difference between insulin produced in animals and insulin produced in humans. That difference, caused by a different sequence of peptides, can be recognized by the immune system as something foreign and as such can be a threat to the body. And that would trigger an immune response. Also, the response can be because it hasn't been properly purified and contains other compounds or proteins that are also foreign.
Which shows the most direct path that carbon can take through the carbon cycle? plant ® atmosphere ® animal animal ® plant ® atmosphere plant ® animal ® atmosphere atmosphere ® animal ® fossil fuel
The most direct path that carbon can take through the carbon cycle is: plant ---> atmosphere ---> animal.
What is the carbon cycle?The carbon cycle refers to the various processes by which carbon flows through the ecosystem.
The carbon cycle involves processes which remove carbon and other processes which release carbon into the atmosphere.
The most direct path that carbon can take through the carbon cycle is plant ---> atmosphere ---> animal.
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Answer:
The answer is C) plant ® animal ® atmosphere
Explanation:
Probiotics help to reinforce the integrity of the gastrointestinal tract by forming a network of proteins that blocks the movement of pathogens through its lining. If the integrity of the GI tract lining is compromised, pathogens can move more easily into the blood. This condition of compromised integrity of the GI tract is called
Answer:
The correct answer is "leaky gut".
Explanation:
"Leaky gut", also known as "intestinal permeability", is a term used to describe a condition of the gut's mucosal lining at which it becomes permeable as a result of suffering from damage. This is a serious condition since undigested food particles, toxic waste products or pathogens can move more easily into the blood. This contributes to suffer from different diseases, which can become chronic if the condition gets unattended.
The fact that each plant gets only one allele from each parent plant is detailed in the law of
Answer: segregation law
Explanation:
Which of the following best describes how ACh changes the ion permeability of the sarcolemma?
A) ACh activates acetylcholinesterase.
B) ACh entry into the axon terminal causes neurotransmitter release.
C) ACh binds to receptors in the junctional folds.
D) ACh entry into the muscle fiber causes Ca2+ to be released by the sarcoplasmic reticulum.
Answer:
C) ACh binds to receptors in the junctional folds.
Explanation:
The statement 'ACh binds to receptors in the junctional folds' best describes how ACh changes the ion permeability of the sarcolemma (Option C).
The sarcolemma is the plasma membrane of the muscle cells.
Moreover, acetylcholine (ACh) is a neurotransmitter that is released by motor neurons during muscle contraction.
After release, ACh binds to specific (nicotinic) receptors in the sarcolemma at the neuromuscular junctions (i.e., junctional folds).
These receptors are also called chemical-gated and/or ligand-gated channels because they are known to modify the ion permeability of the sarcolemma.
In conclusion, the statement 'ACh binds to receptors in the junctional folds' best describes how ACh changes the ion permeability of the sarcolemma (Option C).
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A circular double-stranded DNA molecule contains 4200 base pairs. In solution, DNA is in a B-form helix, with about 10.5 base pairs/turn. The DNA has 12 superhelical turns. What is its superhelix density
Answer:
The correct answer is - 3 × 10⁻²
Explanation:
first find LKo = length of BDNA/ 10.5 bp/turn
= 4200/10.5
= 400
now calculate Δ LK= LK - LKo
ΔLK = 412-400
ΔLK = 12
now, superhelix density = ΔLK/LKo
⇒ 12/400 = 0.03
= 3×10⁻²
Thus, the correct answer is - 3 × 10⁻²
A population of birds lives on a small island. Another population of the same species lives on the mainland. The distance between the island and the mainland is too great for birds to fly back and forth. Recently, a series of sandbars and tiny islands have formed between the island and the mainland?
Answer:
Explanation:
Based on this information it can be said that this formation between the islands and the mainlands will most likely cause an increase in gene flow between the bird populations. Since the islands and the mainland are now connected birds from both these two different habitats will begin mating and producing progeny, thus causing gene flow to increase between these species.
Answer:
An increase in gene flow between the birds population.
Explanation:
Which best describes a person's carbon footprint?
O A. The amount of carbon dioxide he or she releases into the
atmosphere
B. The amount of carbon consumed by a person
C. The amount of carbon he or she absorbs from the environment
O D. The amount of nitrogen he or she fixes into carbon
A. The amount of carbon dioxide a person releases into the atmosphere
Answer:
Pretty sure its A if not sorry
Explanation:
what is a part of interphase A. cytokinesis B. telophase C. anaphase D. s phase
Answer:
D
Explanation:
I did it on my own soci know it's the answer
In the context of interphase, the S phase is the specific part where DNA replication occurs, contributing to the overall process of cell division and ensuring the transmission of genetic material to new cells and the correct option is option D.
Interphase is the longest phase of the cell cycle, and it is divided into three main stages: G1 phase, S phase, and G2 phase. Among these stages, the S phase is specifically responsible for DNA replication. It is during the S phase that the cell's DNA is duplicated in order to prepare for cell division.
During the S phase, the DNA helix unwinds, and the two strands separate. Enzymes and proteins then work together to synthesize new complementary strands for each of the separated DNA strands. As a result, two identical copies of the DNA molecule are produced.
The S phase plays a crucial role in maintaining the genetic integrity of the cell. By accurately duplicating the DNA, the cell ensures that each daughter cell formed during cell division receives an identical set of genetic information. This is vital for the proper functioning and development of organisms.
Thus, the ideal selection is option D.
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Jessica weighs 125 pounds. She rode a bike at 17mph for 25 minutes. What is the calorie cost of this activity?
a. 185 calories
b. 178 calories
c. 180 calories
d. 190 calories
e. 188 calories
Answer:
b. 178 calories
ok so 17mph is 0.57 weight/min
so what were going to do is multiply 125 times 0.57 which is 7.125
then multiple that answer by 25 mintues: 7.125 x 25 = 178.12...etc
now if we round this up it stays as 178!
A microbiologist would like to use a noncompetent genus of streptococcal bacteria, Enterococcus faecalis, as a cloning host to express genes from Streptococcus pneumoniae, which is naturally competent. Is this possible? Group of answer choices
Answer:
Yes, with the assistance of electroporation the bacteria Enterococcus can be made competent, and afterward, the Streptococcus bacterial genes can be presented within the Enterococcus with the help of a cloning vector.
The electropermeabilization or electroporation refers to a microbiology technique in which the permeability of the cell membrane is enhanced with the application of the electric field. This permits drugs, chemicals, or DNA to get presented within the cell.
The procedure of electroporation is generally used in the field of microbiology to transform yeast, bacteria, or protoplasts of plants by presenting novel coding DNA.
Eggs and sperm are examples of _____. zygotes somatic cells diploid cells gametes
Answer:
gametes
Explanation:
gradpoint
mechanism of the formation of urine
Explanation:
Filtration, Reabsorption, Secretion: The Three Steps of Urine Formation. The kidneys filter unwanted substances from the blood and produce urine to excrete them. There are three main steps of urine formation: glomerular filtration, reabsorption, and secretion.
An atom has a mass of 35 a neutron mass of 35 and an electron mass of 35. What is the estimated mass of the atom
The estimated mass of the atom is 70 amu...
ExplanationAn atom has a proton mass of 35 and a neutron mass of 35 , Mass of an atom is equal to the sum of number of protons and number of neutrons .
In this case , number of protons p = 35 Number of neutron n = 35 So , the estimated mass of the atom will be :-
M 35 protons + 35 neutrons = 70 amuhope this answer correct (^^)....
Different types of protists move in different ways. Describe how one type of protists you observed moves. Be specific.
Answer:
Euglena is a protist and it moves with the aid of structures called flagella
Explanation:
Flagella are known as locomotive cells which propels from the body parts of organisms . They are made of protein structures and formed in a helical manner.
They are whip like structures and usually helps in the movement of the protists through liquid surfaces through the whip like movement of the flagella.
What do you think might happen to tissues such as the intestinal lining if a disorder blocked mitotic cell division in all cells of the body
Answer:
This is what actually happens with chemotherapy for cancer. Drugs are given which inhibit cell division. Cells such as tumour cells, which are rapidly dividing are affected most, then other dividing cells such as the epithelial lining of the gut, which nedds cell division to repair itself. The result is ulceration and bleeding.
hope this answer is correct
A student recorded the height of each student in the school. She then made a bar graph of her results. She observed that
the results form a bell-shaped curve. The student could use her graph as evidence to support which argument?
Height is affected by multiple pairs of genes on different chromosomes.
The alleles for tall height and short height are codominant.
The allele for being tall is dominant to the allele for shorter heights.
There are three alleles for height that demonstrate incomplete dominance.
Answer:
Height is affected by multiple pairs of genes on different chromosomes.
Explanation:
The height is a quantitative trait, it is a phenotypic feature that presents a continuous range of variation in the population. The cumulative effects of many genes and the environment produce a normal distribution bell-shaped curve when they are drawn, this being a characteristic of quantitative genetic traits. Examples of quantitative traits include, among others, height, metabolic rate and weight.
The student could use their graph as evidence to support the argument that "The alleles for tall stature and short stature are codominant."
What is a Codominant gene?Codominant: Autosomal codominant inheritance is the condition in which the heterozygote has the characteristics determined by both alleles (dominant and recessive).
What is allele?Allele genes are those that occupy the same locus on homlogous chromosomes and are involved in determining the same character.
With this information, we can conclude that the genes alleles of the students in this class are codominant.
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In a certain variety of lentils, one gene controls color: red is completely dominant to orange, while a second independent gene controls pattern: large spots are co-dominant with small dots. A dihybrid cross involving these two genes should result in:
Answer:
a phenotypic ratio 9:3:3:1
Explanation:
one gene controls color: red (R) is completely dominant to orange (r) a second independent gene controls pattern: large spots (L) are co-dominant with small dots (l)A dihybrid cross involving these two genesCross:
Parental) RrLl x RrLl
Gametes) RL Rl rL rl
RL Rl rL rl
Punnet Square) RL Rl rL rl
RL RRLL RRLl RrLL RrLl
Rl RRLl RRll RrLL Rrll
rL RrLL RrLl rrLL rrLl
rl RrLl Rrll rrLl rrll
F1) 9/16 R-L-, red and large spotted individuals
3/16 R-ll, red and small dotted individuals
3/16 rrL-, orange and large spotted individuals
1/16 rrll, orange and small dotted individuals
Note: The symbol "-" refers to either the dominant allele or the recessive one
Why is it difficult to establish rules, regulations and laws to protect sea turtles over their entire range
Answer:
The reason why it is difficult to create rules, regulations and laws to protect sea turtles over their entire range is that, it would take a concerted effort on a global scale to achieve that. The logistics and administration of such efforts of would take some years to work out.
Explanation:
Answer:
The reason why it is difficult to create rules, regulations and laws to protect sea turtles over their entire range is that, it would take a concerted effort on a global scale to achieve that. The logistics and administration of such efforts of would take some years to work out.
Explanation:
Sea turtles can be found around the world. The efforts described above, therefore, would require that many different countries and cultures would have to cooperate as well as own their share of the responsibility required to make it so.
Legislation with regard to the efforts would need to be executed if not simultaneously, at least over approximately the same block of time.
Not only that, it would require tons of research as the peculiarity of each geographical location would be considered.
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Starting with the illuminator and ending with your eye, describe the path of light traveling through a microscope with a specimen on a slide.
Answer:
A) Light, originates from source
B) With the help of the condenser, it becomes focused onto the specimen on the slide
C) The light then enters the objective lens which magnifies the image.
D) The magnified image/light then passes through a series of mirrors and prisms made of glass and eventually entering the eyepiece
E) The eyepiece further magnified the image then throws it to be received by the eyes.
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Craig Mellow investigated RNA interference by injecting antisense and double-stranded RNAs into C. elegans. If the antisense and double-stranded RNAs were very similar, but not identical, to C. elegans mex-3, what would be the results of their experiment
Answer:
It is required that the seed region of the processed dsRNA molecule bind to the mRNA of mex-3 in order to inhibit its translation
Explanation:
Double-stranded RNAs are small interfering non-coding RNAs (about 20 nucleotides in length) that, after processing, can bind by complementary base pairing to RNAs and thus inhibit protein translation by a mechanism referred to as 'RNA interference' (RNAi). The base pairing is not always perfect; however, the guide strands of dsRNAs can conserve their ability to inhibit the translation if the complementarity is enough good to match target RNA sequences. The critical region in the dsRNA that is required to bind target RNAs is known as seed region, and consists of 6 to 8 nucleotides in length.
Implanting an electrode that supplies a weak electrical current to specific brain areas is called _____. It is useful in the treatment of _____
Answer:
Deep Brain Stimulation (DBS)
Depression, Uncoordinated body movements such as in Parkinson's disease
Explanation:
Deep brain stimulation is a surgical procedure in which a device that sends electrical impulses to the brain by means of lead wires connected to electrodes placed in the specific areas of the brain, is implanted in the body, typically the chest region.
This surgical procedure is usually required to treat diseases in which there is irregular and improper nervous stimulation of the brain resulting in various nervous disorders such as irregular muscle movements as in Parkinson's disease as well as depression.
The impulses sent from the stimulator device to the electrodes in the brain through the wires, serves to stabilize and normalize nerve signals sent to the brain.