Answers
Fertilization refers to the process of two gametes of opposite sex uniting (option C).
What is fertilization?Fertilization is the process whereby the male gamete unites with the female gamete to form a zygote.
In sexually reproducing organisms, the male organism of a species produces a gamete called sperm cell while the female organism produces egg or ova.
Therefore, it can be said that fertilization refers to the process of two gametes of opposite sex (male and female) uniting.
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Related Questions
- Hello! I am currently in the systematical process, of completing a FRQ, for my AP Psychology, course, and was wondering, if you could potentially, provide assistance; help, on this scenario, as follows:
Prompt: Eighteen-year-old Jennifer is afraid of heights. She has sought professional help to overcome this paralyzing fear but to little avail. When she is higher than two stories, she is reminded of a frightening trip to a high observation deck as a child. Each time Jennifer knows she will be in a high place, she plans out her approach days ahead but is anxious and agitated until the moment arrives. She realizes her fears are irrational but cannot seem to help her behavior.
A) Explain how the following approaches to psychology would help Jennifer understand the causes of her fears.
• Humanistic
• Psychoanalytic
• Cognitive
• Behavioral
• Sociocultural
B) Explain how the following types of psychologists would attempt to examine Jennifer’s behavior.
• Counseling
• Developmental
Answers
Answer:
A) Behavioral
B) Developmental
which process produces rna from dna
a.translaion
b.replication
c.trascription
d.conjugation
Answers
Answer: C transcription
Explanation:
Most fats and fat-soluble nutrients are absorbed and carried through the ______ system.
Answers
Most fats and fat-soluble nutrients are absorbed and carried through the lymphatic system.
In the digestive system, absorption of digested food takes place in the intestine. To increase the surface area for absorption, the small intestine contains tiny projections called microvilli. Each of these microvilli contains blood vessels that absorb digested food and nutrients like carbohydrates and proteins into the blood stream and takes them to the liver through the hepatic portal vein. As for fats and fat-soluble nutrients though, they do not take this route - their molecules are just too big
Instead, fats and fat-soluble nutrients are absorbed through a different route, the lymphatic system. The microvillus in the small intestine also contains a vessel called the lacteal. This vessel is used for absorption of fats and leads to the lymphatic system. The molecules of fat are then further broken down and deposited in the heart, where they are absorbed into the blood vessels.
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A mutation that causes resistance in a population of beetles is an example of _______. a. macroevolution b. microevolution c. migration d. reproduction please select the best answer from the choices provided a b c d
Answers
A mutation that causes resistance in a population of beetles is an example of microevolution and the reason is mutation.
Evolution means when something evolves or changes and gets adopted because of those changes eliminating the previous population and getting fit in the environment and then leading life and growing and increasing their population. Evolution can be both macros which means evolution which is bigger and got sustained for a longer time and microevolution which means evolved but was not able to be sustained for a longer duration and is the change in allele frequencies that occurs over time within a population. This change is due to four different processes: mutation, selection, gene flow, and genetic drift. This change happens over a relatively short amount of time and in the case of the beetle's population, it is an example of microevolution because mutations are changes in genetic level so beetles were able to survive but not for a longer time and the changes didn't leave it effect for longer periods of time and few pieces of evidence of it are pesticide resistance, herbicide resistance, and antibiotic resistance are all examples of microevolution by natural selection.To know more about microevolution this click at https://brainly.com/question/8318826
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Answer:
Microevolution
Explanation:
The tissue found covering body surfaces, lining body cavities, forming the internal and external linings of many organs, and constituting most gland tissue is tissue.
Answers
The tissue found covering body surfaces, lining body cavities, forming the internal and external linings of many organs and constituting most gland tissue is epithelium tissue.
Epithelial tissues are one of the four basic types of animal tissues, the rest being muscular tissues, connective tissues and nervous tissues. They are thin, continuous, packed, protective layers of cells that line the outer surfaces of blood vessels and organs. Epithelial tissues can be classified based on the shape of individual cells and based on the number of layers.
Based on shape, epithelial tissues can be divided into squamous, cuboidal and columnar epithelial cells. Squamous cells are usually flat and are found on surfaces that are susceptible to rubbing and abrasion as they are easily replaced, for example, the skin. Cuboidal epithelial cells are cube shaped, and columnar cells are long. Some columnar epithelia have hair-like projections called cilia, and some act as glands and secrete mucus.
Based on the number of layers of cells, epithelial tissues can be divided into simple (single layer) and stratified (multiple layer) epithelial cells.
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Plant cells and some animal cells have
vacuoles, however, plant cell vacuoles
are...
A. much higher in quantity.
B. much larger in size.
C. very rare.
Answers
Answer:
B. much larger in size.
:0 x
What type of signal directs the synaptic vesicles to release their neurotransmitters into the synapse?.
Answers
Electrical signals direct the synaptic vesicles to release their neurotransmitters into the synapse.
Synaptic vesicles are the key organelles at the neuron terminals involved in synaptic transmission. They store neurotransmitters that are released in the synapses through an electrical impulse. A synapse is a gap between two neurons through which the electrical impulse is transferred from one neuron to another.
Directing synaptic vesicles through electrical impulses occurs by exocytosis. Exocytosis is observed to be a result of protein-protein interactions. Proteins of synaptic vesicles interact with the proteins of the plasma membrane of the pre-synaptic axon terminal and direct the synaptic vesicle to release neurotransmitters into the synapse.
We can thus say that neurons communicate through electrical impulses, often called action potentials, and chemical neurotransmitters released into the synapse.
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It is difficult to study the specialized abilities of the left and right cerebral hemispheres in the brains of normal individuals because.
Answers
It is difficult to study the specialized abilities of the left and right cerebral hemispheres in the brains of normal individuals because the information is exchanged between the two hemispheres swiftly and thoroughly.
The longitudinal fissure divides the two cerebral hemispheres that make up the vertebrate cerebrum (brain). Therefore, the left and right cerebral hemispheres of the brain can be considered to be separate. The cerebral cortex, which is the outermost layer of grey matter in each of these hemispheres, is supported by an inner layer of white matter. In eutherian (placental) mammals, the corpus callosum, a massive bundle of nerve fibers, connects the hemispheres. Other vertebrates also have smaller commissures that connect the hemispheres, including as the fornix, anterior commissure, and posterior commissure. To coordinate regional operations, these commissures transmit information between the two hemispheres.The cerebral hemispheres have three known poles.The information is exchanged between the two hemispheres swiftly and thoroughly.
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Can someone answer these questions?
1. If antibiotics typically target peptidoglycan in the cell wall, then which type of bacteria
would be more difficult to kill and why?
2. Why is all the color lost when thin-walled bacteria are washed with alcohol during the
staining process?
3. Are bacteria living or non-living?
4. What is the purpose of Gram staining?
5. What pigment gives each stain its color?
Answers
Answer:1.Gram-positive bacteria, 2.some of the bacteria are able to retain the primary stain and some are decolorized by alcohol.
Explanation:
1. those species with peptidoglycan outer layers, are easier to kill - their thick peptidoglycan layer absorbs antibiotics and cleaning products easily. In contrast, their many-membraned cousins resist this intrusion with their multi-layered structure. Therefore, infection prevention techniques must ensure that they can breach the thick peptidoglycan layer of the Gram-positive bacteria but also get through the many layers of the Gram-negative bacteria. 2. The cell walls of gram positive bacteria have a thick layer of protein-sugar complexes called peptidoglycan and lipid content is low
i hope this helps :)
Nitrogen-15 amount of protons, neutrons,and electrons
Answers
Answer:
seven protons, eight neutrons and seven electrons make up an atom of nitrogen-15.
Explanation:
You should ask the patient if he/she is okay before performing cpr. true or false
Answers
Yes, we should to ask to patients if she or he okay before CPR.
True or false: CPR should be to a patient who is unconscious but not unresponsive?CPR needs to be started right away if the patient isn't breathing, unconscious, or has no pulse. Always keep in mind that chest compressions are the first step in good CPR. It's crucial to remember that death is most likely to occur after 10 minutes of brain oxygen deprivation.
Before performing CPR , check vict is responding or not. Ask her if she is ok and touch on her shoulder. If she responds or is breathing CPR is not necessary.
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Answer: This is true.
Explanation: Before performing any first aid/CPR, you should ask permission unless they are unconscious or unresponsive.
How many turns of the double helix must be unwound during replication of the e. coli chromosome?
Answers
It is given in the question that the E. coli chromosome contains 4,639,221 base pairs.
As we know that the one turn of double-stranded chromosome contains ten base pairs.
Therefore, if we need to find the number of turns for 4,639,221 base pairs, then we need to divide it by ten.
Hence, the number of turns of the double helix that is required for unwinding during replication of E. coli is 463922.
What is E. coli ?E. coli or Escherichia coli is a type of bacteria that is known to reside in our intestines. E. coli belongs to the family of Enterobacteriaceae. When this bacteria is found in urine, then it can cause some dangerous urine infections, ultimately infecting urinary tract infections.
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Which organisms are heterotrophs 
Answers
In a chemical reaction, substance A transfers electrons to substance B. which statement is correct?
• Substance B is oxidized and acts as the reducing agent.
•Substance A is oxidized and acts as the oxidizing agent.
•Substance A is reduced and acts as the reducing agent.
•Substance B is reduced and acts as the oxidizing agent.
Answers
Chemical reactions are said to be the changes that form new substances. When A transfers electrons to B then substance B is reduced acts as an oxidizing agent.
What are oxidizing agents?Chemical reactions are said to use compounds known as electron acceptors as oxidizing agents. They receive electrons from the reducing agent to finish their electrical configuration of the valence shell. These also go by the name "oxidizer."
Because it donates extra electrons from the valence shell, substance A, which is an electron donor, acts as a reducing agent. While giving electrons, some compounds undergo reduction. The best example of this is NaCl, where the sodium atom provides electrons and the chlorine atom takes them.
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Water molecules are formed using polar covalent bonds.
A. Identify the type of bond that holds different water molecules together
B. Explain how this bond gives water the all of the characteristics that make life possible on Earth.
Answers
Answer:
hydrogen bonding
Explanation:
water molecules are polar hence forming hydrogen bonding and this gives water unique properties such as relativly high melting and boiling points,high specific heat capacity, cohesion and adhesion
Which structure is perforated with pores to allow material to move in and out of the nucleus?.
Answers
The nuclear envelope is perforated with pores to allow it to move in and out of the nucleus.
Every cell in the body has a nucleus, except for mature erythrocytes (red blood cells). While some cells contain more than one nucleus such as skeletal muscle and some other cells contain several nuclei.
The nuclear envelope surrounds the nucleus. i. e. largest organelle of the cell. It has a similar structure to that of
the plasma membrane. But the nuclear envelope contains tiny pores that allow a few substances to pass between it and outside the cytoplasm, i.e. the cell contents excluding the nucleus.
Therefore, the nuclear envelope is perforated with pores to allow it to move in and out of the nucleus.
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Which is a characteristic of the littoral zone of lake Erie?
A. floating aquatic plants
B.free-floating autotrophs
C. low level of biodiversity
D. wide variety of fish species
PLEASE ANSWER THIS I NEED IT FOR HW
Answers
The characteristic of the littoral zone of lake Erie among the above given choices is: floating aquatic plants.
The correct answer choice option a
What is meant by aquatic plants?These are plants which are generally adapted to survive in water to perform life processes.
Plants generally has chlorophyll in their chloroplast which enables them to manufacture their food by themselves through the process of photosynthesis.
These floating aquatic plants are plants belong to the littoral zone because they are organisms which are found in aquatic or water environment. And as such littoral zone includes to those areas of water bodies close to land.
So therefore, thecharacteristic of the littoral zone of lake Erie among the above given choices is: floating aquatic plants.
The correct answer choice option a
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Do both cells in model 3 have nucleus?
Answers
Animal and plant cells have many differences. However, they also have many structures in common. One of them is the nucleus that protects their genetic material. Yes, both cells in model 3 have nucleus.
What are the differences between animal and plant cells?Among the differences between animal and plant cells, we can mention the followings,
Plant Cells
Have a cell wallHave chloroplastsHave a unique big-sized vacuoleHave plasmodium, chromoplasts, and glyoxysomes.Animal Cells,
Have centriolesHave many small vacuolesHowever, they also share many characteristics. Among them we can mention that both of them
are Eukaryotic cellshave a cell membrane carry their genetic material in the nucleus and mitochondria.have organelleshave microtubules in their cytosol have pigmentsThe attached image (model 3) shows two cells. One of them is a plant cell and the other one is an animal cell.
Both of them have a nucleus, among other structures in common. So the answer is YES, both cells in model 3 have nucleus.
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Which step in respiration utilizes a terminal electron acceptor such as diatomic oxygen (o2)?
Answers
Oxygen serves as the final electron acceptor in cellular respiration, eletron transport chain. The electrons travel via the electron transport chain and ATPase, the enzyme that produces high-energy ATP molecules, before being taken up by oxygen.
What is electron transport chain?An electron transport chain (ETC) is a collection of protein complexes and other molecules that connect protons (H+ ions) across a membrane with the transfer of electrons from electron donors to electron acceptors via redox processes (both reduction and oxidation occur simultaneously) a group of proteins in the mitochondria's inner membrane. The inner mitochondrial membrane of eukaryotic organisms houses the electron transport chain and the location of oxidative phosphorylation.The ETC receives electrons from NADH and FADH2 through the cooperation of four big multisubunit enzyme complexes and two mobile electron carriers. The electron transport chain contains a large number of membrane-bound enzymes.Learn more about the electron transport chain with the help of the given link:
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Which process occurs during a light-independent reaction?
A light source stimulates electrons to move through a chain of proteins called the electron transport chain.
The reaction uses the energy from ATP and NADPH molecules to form glucose from carbon dioxide.
Green chlorophyll molecules absorb solar energy.
ATP and NATPH molecules become energy carriers for the next stage of reactions.
Answers
The Calvin-Benson cycle and the light independent process both take place in the stroma of the chloroplast. Carbohydrates are created from carbon dioxide through a sequence of chemical processes.
These processes are powered by the ATP and NADPH produced during the light-dependent process.
What is referred to as photolysis?Photolysis is the interaction of one or more photons with one target molecule and is a chemical reaction in which an inorganic chemical (or an organic chemical) is broken down by photons. It is also referred to as photodissociation and photodecomposition.
ADP and a phosphate group are joined by the rotating ATP synthase to create ATP. This procedure, known as chemiosmosis, enables light-dependent electron transport to generate ATP in addition to NADPH (which is produced at the ETC's conclusion).
The Calvin cycle is also known as the C3 cycle, the nighttime reaction of photosynthesis, or the light-independent reaction. However, it is most active during the daytime when there is a surplus of ATP and NADPH.
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what is a density of an object whose mass is 180 gramsand whose volume is 45cm3
Answers
Answer:
4.04
Explanation:
density=mass/volume
we know the mass and volume so we can plug it into the formula to get the equation density=180/45. then just divide that and you get 4.04
Principles of Ecology
NEW VOCABULARY
autotroph
biomass
carnivore
detritivore
food chain
food web
herbivore
heterotroph
omnivore
trophic level
Caden Holm a
yoad
Use your book to fill in vocabulary terms in this paragraph about
food chains.
In a
, matter and energy move from
. A food chain is made of several steps; each organism
in the food chain represents a step called a
A(n)
to
is a heterotroph that eats only plants, whereas a
preys on other heterotrophs. A(n)
plants and animals. Nutrients are returned to the soil, air, and water by
A model that shows all the possible feeding
relationships at each trophic level is called a
If you were a
scientist and you wanted to determine the weight of living matter at a
certain trophic level, you would measure the
eats both
Answers
A trophic web is an interaction between different organisms in which energy transference occurs. 1) food chain, 2) autotroph, 3) heterotroph, 4) trophic level, 5) herbivore, 6) carnivore, 7) omnivore, 8) detritivore, 9) food web, 10) biomass.
What is a trophic web?
The trophic web is the interaction between different organisms involving the transference of energy when some of them feed on the other ones.
Organisms occupy different trophic levels in the web. The ones placed at lower levels pass energy to the ones at the higher levels.
Organisms at each level feed on the preceding one and become food for the next one.
The first link corresponds to a producer organism -autotroph-.The following links are the consumers -heterotrophs-: herbivores and carnivores.The last links are the decomposers that degrade organic matter from dead organisms.A trophic web is composed of different food chains. Several food chains interconnected create a trophic web (food web).
Because it is a web, all organisms are in equilibrium until a change occurs. When a sudden change affects any of the involved links, there can be a cascade effect on the web.
In a (1) food chain , matter and energy move from (2) autotroph to (3) heterotroph .A food chain is made of several steps; each organism in the food chain represents a step called a (4) trophic level . A(n) (5) herbivore is a heterotroph that eats only plants, whereas a (6) carnivore preys on other heterotrophs. A(n) (7) omnivore eats both plants and animals. Nutrients are returned to the soil, air, and water by (8) detritivore .A model that shows all the possible feeding relationships at each trophic level is called a (9) food web .If you were a scientist and you wanted to determine the weight of living matter at a certain trophic level, you would measure the (10) biomass .You can learn more about trophic webs at
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Complete question
Use your book to fill in vocabulary terms in this paragraph about food chains.
In a (1) , matter and energy move from (2) to (3) .
A food chain is made of several steps; each organism in the food chain represents a step called a (4) .
A(n) (5) is a heterotroph that eats only plants, whereas a (6)
preys on other heterotrophs.
A(n) (7) eats both plants and animals.
Nutrients are returned to the soil, air, and water by (8) .
A model that shows all the possible feeding relationships at each trophic level is called a (9) .
If you were a scientist and you wanted to determine the weight of living matter at a certain trophic level, you would measure the (10) .
Terms
autotrophbiomasscarnivoredetritivorefood chainfood webherbivoreheterotrophomnivoretrophic levelMany times a shark is seen with pilot fish swimming around it, eating scraps of food from the shark's meal. The shark is not harmed by the pilot fish, and the pilot fish benefits from the shark. What kind of relationship is this?
Answers
Commensalism : One organism benefits while the other neither benefits nor is harmed.
Commensalism :Long-term biological interactions known as commensalism occur when members of one species benefit while members of the other species suffer neither benefits nor harm.
What is a interspecies relationship?A nonsexual relationship that develops between animals of various species is known as an interspecies friendship. There have been numerous reports of interspecies relationships between wild and domesticated animals that have been captured on camera and in video. Competition, predation, and symbiosis are the three main divisions of interspecies interactions.
What is the difference between interspecific and interspecies?While intraspecific interaction refers to competition between members of the same species for territory, food, and mating, interspecific competition is the competition between members of different species for either food or territory.
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Fish without jaws are called _____ and includes the _____ and the_____
Answers
Answer: There are two categories of jawless fish: hagfish and lampreys. Hagfish usually feed on dead or dying fish. These fish can be found around the tunnels they dig in muddy bottoms, in moderate depths and cold waters. Scientists only know of about 20 species of hagfish worldwide.May 8, 2017
Sorry if it doesn't answer your sentence or question , i just thought about writing this..
What is the function of a stop codon?
A) tells ribosomes and tRNA to stop reading codons and detach
B) tells ribosomes and tRNA molecules to attach to a strand of mRNA and begin reading and translating the codons that follow
C) tells ribosomes and tRNA to return to the nucleus of the cell
D) tells ribosomes and tRNA to package the proteins for transport out of the cell
Answers
The function of the stop codon is that it tells ribosomes and tRNA to stop reading codons and detach. That is option A.
What is stop codon?Stop codon which is also known as the terminal codon is defined as the sequence of nucleotides that signals the cell to terminate the production of proteins.
Examples of the stop codons seen in the cells include the following sequences:
UAG, UAA, and UGA.The functions of stop codons include the following:
They signal the end of protein coding sequences,They mark the site at which protein synthesis ends, andThey disassociate the ribosomal subunits.Therefore, the function of the stop codon is that it is tells ribosomes and tRNA to stop reading codons and detach.
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Our brains are able to focus on and process ____________ of the information we perceive. a. all b. most c. very little d. approximately half please select the best answer from the choices provided a b c d
Answers
Answer:
IT'S LETTER "C" (VERRY LITTLE)Explanation:
Correct Me If I'm Wrong
Which igneous rock has an amorphus texture?
Answers
What is the independent variable?type of sugar
age of the rats
amount of sugar
weight of the rats
Answers
If the scale of this map is 1 cm=600km. What is the distance between Chicago, Illinois and Beijing, China?
Answers
Answer:
10 629 kilometers or 5,739 nautical miles
Explanation:
im right
Causal experiments may be used to test predictions. these predictions may be used to refine physical models. these physical models may be used to develop explanations of natural events. true false
Answers
The given statement is true that Causal experiments may be used to test predictions, these predictions may be used to refine physical models and these physical models may be used to develop explanations of natural events.
Scientific studies are used to test hypothesis . These hypothesis tests are used to refine models and These models are then used to develop explanations.
A hypothesis is idea about how something works that can be tested using experiments. A prediction is what will happen in an experiment if the hypothesis is correct.
Hypothesis is a statement that is capable of being falsified (capable of being shown to be wrong or incorrect). It is not a question.Scientific method-There is no such thing as a "scientific method"; there are only multiple and different ways of generating evidence-based understanding.Model- It is a tool (physical, conceptual, or mathematical) used to advance the scientific understanding of a phenomenon by the use of the tool.learn more about prediction and hypothesis here-
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