Answers
Answer:
a
Explanation:
There are two major differences between mitosis and meiosis. First, meiosis involves not one, but Two cell divisions. Second, meiosis leads to the production of germ cells, which are cells that give rise to gametes. Germ cells are different from somatic cells in a critical way. Whereas somatic cells are diploid, meaning they have two copies of each chromosome, germ cells are haploid. The haploid nature of germ cells is vital to the process of sexual reproduction.
Answer: B
Explanation:
Related Questions
The diagrams below show a cross-section of an environment in which there are no earthworms present and a cross-section of an environment in which earthworms are present.Which of the following statements are true of how earthworms affect their environment according to these diagrams?
I. Earthworms increase plant yields.
II. Earthworms decrease the quantity of topsoil.
III. Earthworms are beneficial to their environments.
IV. Earthworms are detrimental to their environments.
A.
I, II, and IV only
B.
II and IV only
C.
I, II, and III only
D.
I and III only
Answers
Which gas passes into the blood from the alveoli? And which gas passes out of the blood into the alveoli? Please help me
Answers
Oxygen passes quickly through this air-blood barrier into the blood in the capillaries. Similarly, carbon dioxide passes from the blood into the alveoli and is then exhaled
What must this cell do before it can carry out mitosis? (The cell has a diploid number of 444 chromosomes; 2n = 42n=42, n, equals, 4)
Answers
Answer:
grow its cell contents, double its DNA and synthesize proteins
Explanation:
Before a cell can carry out mitosis, such cell will need to grow and develop its contents, synthesize (double) DNA, and also synthesize proteins.
Mitosis involves the equational division of non-sex cells to give two daughter cells. Hence, the contents of a cell that wants to divide by mitosis must be enough to be shared by the two daughter cells.
This is why a cell that will divide by mitosis has to go through the G1 phase, the S phase and the G2 phase where the content of the cells grow and develops, DNA of the cell is replicated, and protein is synthesized respectively. All these processes take place during the interpphase stage of the cell cycle.
Final answer:
Before mitosis, a cell with a diploid number of 4 must replicate its DNA during interphase to ensure each daughter cell receives an identical set of chromosomes.
Explanation:
Before a cell can carry out mitosis, it must first undergo interphase, specifically the S phase (synthesis phase), where the cell replicates its DNA. During interphase, the cell's chromosomes are dispersed as structures in the nucleus and must be duplicated to ensure that each of the two resulting daughter cells receives an identical set of chromosomes. The process of DNA replication is crucial because chromosomes contain genes, which must be accurately distributed to maintain the organism's genetic information. Therefore, when an animal cell with a diploid number of four (2n = 4) undergoes mitosis, it produces two diploid daughter cells each with four chromosomes.
what are some benefits that bacteria have
i need help with this please
Answers
Making drugs, such as antibiotics and vaccines.
Making biogas, such as methane.
Cleaning up oil spills and toxic wastes.
Killing plant pests.
Transferring normal genes to human cells in gene therapy.
Which of the following characteristics is (are) possessed in common by true mosses, ferns, and spike mosses, and therefore becomes useless at helping to determine to which of these groups flower of stone belongs? 1. a sporophyte generation that is dominant 2. true leaves and roots 3. flagellated sperm 4. alternation of generations
Answers
Final answer:
True mosses, ferns, and spike mosses possess alternation of generations in common, which becomes useless for determining the flower of stone's group. Other characteristics they share include the presence of a sporophyte generation that is dominant.
Explanation:
Mosses, ferns, and spike mosses share the presence of alternation of generations, which is the cycle of having a haploid gametophyte stage and a diploid sporophyte stage in their life cycles. The sporophyte generation is dominant in these plants, meaning it is the more visible and longer-lived stage.
In terms of the other characteristics listed, true mosses, ferns, and spike mosses differ. True mosses have simple midrib-like structures resembling true leaves, while ferns have fronds and spike mosses have strap-like leaves. True mosses and spike mosses have flagellated sperm, while ferns do not. Additionally, true mosses and spike mosses lack true roots, instead having multicellular rhizoids, while ferns have true roots and leaves.
What evidence is there that every organism on earth once had a common ancestor
Answers
There is a tonne of evidence that points to a common ancestor for all living things on Earth. Numerous sources, including as genetic, morphological, and fossil data, contribute to this proof. First, the genomic data points to a common ancestor for all living things on Earth.
What is the depiction regarding the DNA ?DNA is a component of all living things, and all living things' DNA is made up of the same four nucleotide bases: adenine, guanine, cytosine, and thymine.
The same genetic code, which is a collection of instructions that governs how the data in DNA is utilised to make proteins, is also used by all living things. This shows that all living things had a common ancestor who had the same four nucleotide bases and genetic code.
Second, the data from morphology implies believe there is a single ancestor for all living things on Earth. There are some traits that all species have, such a cell membrane and a nucleus.
Additionally, the same fundamental building ingredients found in proteins, carbohydrates, and lipids make up every single life. This argues that all living things descended from an ancestor who had the same fundamental traits and building components.
Last but not least, fossil evidence points to a common progenitor for all living things on Earth. Direct proof of an organism's evolutionary history can be found in fossils. Scientists have been able to track the evolutionary history of creatures by analysing the fossil record, and they have found that all organisms have developed from a common ancestor. Consequently, there is a lot of data that supports the evidences.
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Is made of genetic material and a protein coat
Answers
Answer:
virus
Explanation:
a virus is surrounded by a protein coat
Whereas superficial flexors in the anterior compartment of the forearm originate from the _____ epicondyle of the humerus, the superficial extensors in the posterior compartment of the forearm originate from the _____ epicondyle of the humerus.
Answers
Answer:
Whereas superficial flexors in the anterior compartment of the forearm originate from the medial epicondyle of the humerus, the superficial extensors in the posterior compartment of the forearm originate from the lateral epicondyle of the humerus.
Explanation:
The forearm has 2 compartments: an anterior compartment responsible for the flexion of the wrist, and a posterior compartment with the function to extend the wrist.
The superficial muscles in the anterior compartment arise from the common flexor tendon that originates from the medial epicondyle of the humerus. This compartment is mostly innervated by the median nerve.
The superficial muscles in the posterior compartment originate from the lateral epicondyle of the humerus and are innervated by the radial nerve.
The ulnar nerve innervates the flexor carpi ulnaris and flexor digitorum profundus in the forearm.
A plant has two alleles for color the red allele is recessive and is represented by q the purple allele is dominant and is represented by p if 76 of 100 organisms are red what is q
Answers
Answer:
0.87Explanation:
As given
q=red (recessive)
p=purple (dominant);
According to Hardy-Weinberg law;
(p+q)= 1 = p²+ 2pq+ q²
As the information provided, the red allele is recessive and it is represented by q
so q²= 76/100 = 0.76
Now we can find the recessive allele frequency using it as q is the frequency of recessive allele.
Thus, q= √0.76
q= 0.8717797887
Thus, the value of q is 0.871
Answer:
The answer is 0.87
Explanation:
:D
Both of Brian's parents are deaf, and he is deaf also. American Sign Language is the primary language of communication in Brian's home. Vladimir and his family live in Russia, and their primary language is Russian. If we were able to look at some of the structures in Brian's and Vladimir's brain, we would probably see some physical differences. These differences would be accounted for by which of the following?
a. language-related brain functionsb. experience-expectant brain functionsc. experience-dependent brain functionsd. experience-derived brain functions
Answers
Answer: They would experience-dependent brain functions.
Explanation:
When parts of a gas cloud collapse, where does it material first form clumps?
In less dense regions with more space between atoms
In denser regions with little space between atoms
In denser regions with more space between atoms
In less dense regions with little space between atoms
Answers
Answer :in interstellar gases and stars
:contract
:slow evolution
:astronomers have observed their movements over time
:its distance from the other galaxy, its size compared to that of the other galaxy
:denser regions with little space between atoms
:same age stars
The material from the collapsing of parts of a gas cloud will first form clumps ; ( B ) In denser regions with little space between atoms
Since the inner cores of a gas cloud is denser ( i.e. little or no space between the atoms present in the inner cores of the gas cloud ). when a gas cloud starts collapsing the denser region of the gas cloud will collapse first into small fragments known as clumps.
The clumps formed during the collapsing of the inner core of the gas cloud will come together to form what is known as protostars after a very long period.
Hence we can conclude that the material from the collapsing of parts of a gas cloud will first form clumps In denser regions with little space between atoms.
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Which type of rock would most likely be weathered by acidic groundwater to produce a cave? *
A) Siltstone
B) Basalt
C) Quartzite
D) Limestone
Answers
Answer:
limestones, cause they fwea but nah fr no cap its limestones
Limestone is the type of rock would most likely be weathered by acidic groundwater to produce a cave. So, the correct option is (D).
What is Limestone?Limestone is a type of carbonate sedimentary rock. It is the main source of physical lime made from the mineral calcite and aragonite, which are different crystal forms of CaCO₃. Limestone is formed when these minerals precipitate out of calcium-rich water.
Limestone is formed when slightly acidic groundwater seeps through limestone rocks that dissolve a hole in the rock. The hole grows in size over time to form caves which are sometimes miles long.
Groundwater carries the dissolved calcite in solution and deposits it in other caves as limestone.
Thus, limestone is the type of rock would most likely be weathered by acidic groundwater to produce a cave. So, the correct option is (D).
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Damage to the enteric nervous system that innervates the digestive organs could affect: Damage to the enteric nervous system that innervates the digestive organs could affect:
A. deglutition.
B. salivation.
C. motility.
D. mastication.
Answers
Answer:
Option C, motility
Explanation:
Enteric nervous system (ENS) is essential for the motility of esophagus, stomach, small intestine and colon. The neural network of ENS controls the propulsive motility without depending on the connections with the brain or spinal cord. In other way, enteric small brain take care of specialized motility in all differentiated compartments along the digestive tract i.e from esophagus to recto-sigmoid
Hence, option C is correct
Which of the following statements best describes the relationship between sex chromosomes and autosomes in humans?
A. Sex chromosomes are only found in males while autosomes are found in both sexes.
B. Sex chromosomes are found in both sexes while autosomes are only found in females.
C. Sex chromosomes are found in diploid cells while autosomes are in haploid cells.
D. Sex chromosomes are found in haploid cells while autosomes are in diploid cells.
Answers
Answer:
sex chromosome are found in haploid cell while autosomes are in diploid cell
Horsetails are helpful for treating
bee stings
fevers
urinary tract infections.
bleeding injuries
Answers
Answer:
The answer is C : Urinary Tract Infections
Hope this helped!
Horsetails are helpful for treating urinary tract infections. Therefore option 3 is correct.
Urinary tract infections: Horsetails have historically been used as a traditional remedy for urinary tract infections (UTIs).
They are believed to have diuretic properties, potentially increasing urine production. However, it is essential to consult with a healthcare professional for an accurate diagnosis and appropriate treatment of UTIs, as they often require antibiotics for effective resolution.
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The first and second lines of defense against microbial invasion are part of The first and second lines of defense against microbial invasion are part of microbial antagonism. innate immunity. species resistance. species immunity. adaptive immunity.
Answers
Answer:
the correct option is B: "innate immunity"
Explanation:
The first line of defense comprises the skin, secretions of skin and mucous membranes. These structures are responsible for preventing entry of foreign particles that may cause harm.
The second line of defense consists of an inflammatory response, developing a fever, leukocytes and non-specific antimicrobial proteins.
If the body's first line of defense fails to keep out the pathogen, the second line of defense kicks in to defend the body.
And now the third line of defense, also called 'adaptive immunity', antibodies, lymphocytes and memory cells. These respond in a specific manner to the microbe that has invaded the body.
Hope that answers the question, have a great day!
The first and second lines of defense against microbial invasion are part of innate immunity.
Explanation:The first and second lines of defense against microbial invasion are part of innate immunity.
The first line of defense includes physical barriers, such as the skin and mucous membranes, which prevent microbial entry.
The second line of defense includes cellular and chemical components, such as phagocytes and inflammation, which work to eliminate microbes that have breached the physical barriers.
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what would happen if all of the foxes were hunted until they were gone in a forest ecosystem?
Answers
HELPPPPP WILLL GIVE BRAINLIEST!!!!!RATE!!!!! AND THANKS!!!!! EASY BUT IM DUMB!!!!
What two diseases have been studied together that provide evidence of evolution in humans?
A) malaria and ebola
B) cytochrome c disease and plasmodium fever
C) sickle cell anemia and malaria
D) iron-deficient anemia and yellow fever
Answers
Answer: The answer is B
Explanation: Sickle cell malaria is a genetic disorder that originated in Africa due to Malaria
Answer:
The answer is B
Explanation:
Imagine crossing a pea heterozygous at the loci for flower color (white versus purple) and seed color (yellow versus green) with a second pea homozygous for flower color (white) and seed color (yellow). What types of gametes will the SECOND pea produce?
Answers
Answer:
Hi there! I seen this question on a site named quizlet! So thats how im giving this answer to you right now! Hope this helps!
Explanation:
four gamete types: white/yellow, white/green, purple/yellow, and purple/green
in plants that undergo double fertilization ,the structure that forms to nourish the seed is called
Answers
Answer:
A. endosperm.
Explanation:
The Life Cycles of Plants quiz on edge.
PLZZZZZZ HELP!!!!
The purpose of the excretory system is to remove ____________, liquid, _____________ and waste from the body.
Answers
Answer:
It removes waste as gas(or carbon dioxide), liquid (like pee or sweat), and as a solid (like poopoo)
Explanation:
Research
The purpose of the excretory system is to remove metabolic wastes such as urea, excess salts, water, and other liquid waste products from the body.
What is an excretory system?The excretory system is a biological system found in living things that is responsible for the removal of metabolic waste products from the body. The system consists of many organs and parts, such as the kidneys, liver, lungs, skin, and intestines, that cooperate to filter and remove waste products from the blood and other bodily fluids, such as urea, excess salts, and water. and other liquid waste products.
The kidneys, the main organs of the excretory system, are essential for controlling the composition and amount of bodily fluids. Urine, made by the kidneys after filtering waste from the blood, is then carried to the bladder and expelled from the body through the urethra.
Therefore, the purpose of the excretory system is to remove metabolic wastes such as urea, excess salts, water, and other liquid waste products from the body.
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Alexander Fleming discovered a type of that kills bacteria, which led to the development of Penicillin.
Answers
Answer:
mold juice
Explanation:
Answer:
mold
Explanation:
he used was studying molds and how they formed when he accidentally discovered an antibiotic substance.
Symptoms of protozoan and helminthic diseases are due to
Answers
Answer:
Symptoms of protozoan and helminthic diseases are diarrhea, nausea, vomiting, cramps, fever, dehydration, anorexia, abdominal discomfort and weight loss.
Explanation:
Protozoan diseases such as malaria, giardia, and toxoplasmosis caused by protozoan organisms while helminthic diseases are caused by parasitic worms. These worms attack on the helminths which is a body part of human. Symptoms of protozoan and helminthic diseases are due to the attack of parasitic worms and harmful protozoans on the body parts of human beings.
The correct option is b) The damage to host tissues by the parasites. Symptoms of protozoan and helminthic diseases are due to the damage to host tissues by the parasites.
Damage to Host Tissues: Parasites can cause physical harm to the tissues they inhabit, leading to symptoms such as inflammation, pain, and dysfunction of the affected organs.Release of Toxins: Some protozoa and helminths release toxic substances that can directly harm host cells or disrupt normal physiological processes, resulting in symptoms.Immune Response of the Host: The body's immune system reacts to the presence of parasites. This immune response can cause symptoms such as fever, swelling, and tissue damage, as the body attempts to fight off the infection.These mechanisms together contribute to the overall symptoms experienced during protozoan and helminthic infections.
COMPLETE QUESTION
Symptoms of protozoan and helminthic diseases are due to ________.
a) The release of toxins by the parasites
b) The damage to host tissues by the parasites
c) The immune response of the host
d) All of the above
Where in this diagram would an earthquake's focus be located?
A. Underground, at the point where slippage aling the fault begins
B. At any point on Earth's surface where rock is deformed
C. On Earth's durfacem directly above the fault
D. About 70km below the fault, at sea level
Answers
Use the illustration and reading to define the process of transcription below.
Answers
Answer:What transpired it’s not showing the answer is a that would equal 10
Explanation:the hot girl said it
Which statement about homeostasis is false? Homeostasis depends primarily on positive feedback. Homeostasis is necessary for proper functioning of the body. Homeostasis is the maintenance of a steady physiological state within an organism or cell. The endocrine system plays a major role in maintaining homeostasis.
Answers
Homeostasis depends primarily on positive feedback is a false statement rest of all are true about homeostasis, hence option A is correct.
What is homeostasis?It is the condition in which an organism develops, a process through which its body has the ability to maintain stability if any change is occur in the external environment.
Homeostasis results in the following observations:
It is necessary for the proper functioning of the body.The endocrine system plays a central role in maintaining homeostasis.Homeostasis is the supervision of a controlled physiological state within an organism or cell.As external environment is changed there is a need for an organism to change according to the condition for its survival.
Therefore, option A is false about homeostasis.
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Why are enzymes needed during DNA replication?
Answers
Answer:
An enzyme is a molecule that speeds up a reaction. In the case of DNA reproduction, enzymes not only speed up the reaction, they are necessary for DNA reproduction.
Explanation:
An enzyme is a molecule that speeds up a reaction. In the case of DNA reproduction, enzymes not only speed up the reaction, they are necessary for DNA reproduction.
Recall that DNA is a long strand with a many repeating base pairs. In order for DNA to reproduce, the base pairs must be split apart. One half of the strand is then used as a template to build a new strand of DNA.
The enzyme helicase is responsible for splitting DNA along the base pairs. Helicase moves along the DNA strand unzipping the strand just as a zipper.
in which replication cycle is the viral genome reproduced without damage to the host cell
Answers
Answer:
lysogenic cycle
Explanation:
it allows a phage to reproduce without killing its host. Some phages can only use the lytic cycle, but the phage we are following, lambda ( λ), can switch between the two cycles.
The viral genome can be reproduced without harming the host cell during the lysogenic cycle. Here the viral genome becomes part of the host's DNA, and is replicated without causing cell death.
Explanation:The viral replication cycle in which the viral genome is reproduced without causing damage to the host cell is known as the lysogenic cycle. In this cycle, the viral genome is incorporated into the host DNA and is replicated along with the host cell’s DNA without causing cell death. This is in contrast to the lytic cycle where the virus destroys the host cell to release new virus particles. The lysogenic cycle allows the virus to lay dormant within the host cell, potentially for many years.
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All seed plants reproduce using
Answers
Answer:
They reproduce using seeds
Help ASAP!!!
2 children are playing a game in which they are pulling a rope in opposite directions with an equal force of 50N each, what will be the NET FORCE acting on the rope?
A.) 25N
B.) 0N
C.) 100N
D.) 50N
Answers
Answer:
Its 0N
Explanation: 50 and 50 pulling from each side will be 0 its like 50-50 from each side wich equals 0
Answer:
B is the answer.
Explanation:
The two children are exerting equal, but opposite forces that are balanced. Resulting to the net force is zero.