Answer:
D) that geographically isolated groups of dogs may be selected for quite different traits, resulting in a different dog breed
Explanation:
Artificial selection is a type of selective breeding made by humans in which offspring with desired traits are selected. Modern dogs evolved by artificial selection. Dog breeding began around 30,000 years ago from selective breeding of wolves that were separated from their original population and bred to produce dogs with desired traits (especially, loss of aggressive behavior). Purebred are reproductively isolated groups of dogs originated from the same lineage (i.e., the same common ancestor for each group), that never mated with another dog breed.
Which of the following is NOT a function of receptors?
Answer:
Receptors they receive signal an initiate a response that send a specific signal onward.
Explanation:
Receptors is performed may be affected environmental factors, like light, temperature, pressure, or other receptors.
Receptors can to be change the conformation and posture response to chemical reactions by called signaling.
Most receptors the cellular parts located the part of reporter outside of the cell.
Receptor and often alter the receptor conformation, and are found membrane, and receptor are located only inside the cell.
Receptor cellular control the functions such gene transcription.
Receptor can induce growth, and death, control channels or the regulate cell, and the cell receptors depends on the type of receptors expressed.
Answer: *Olfactory receptor, taste receptor, thermoreceptors are the receptors used for the senses of smell, taste and perceive temperature stimuli. *Photoreceptors are the receptors used to detect light. They are found in rods and cones of the retina in the eye. *Pain receptors sense the pain in parts of the body.Mar 18, 2015
Explanation:
Which of the following is composed of a population of a species plus populations of other species? A. Community B. Biotic Potential C. Abiotic community D. Ecosystem
A Community is composed of a population of a species plus populations of other species. Thus, the correct option is A.
What is Population?A Population may be defined as a group of individuals belonging to the same species living in the same area at a given time. Some demographic characteristics of a population are size, density, birth rate, death rate, population dispersal, etc.
A community may be defined as a group of individuals belonging to different species living in the same area at a given time.
An ecosystem may be defined as a place or area where individuals of different species along with abiotic factors live together and interact with one another for the purpose of food, shelter, and space.
The Abiotic community deals with the existence of abiotic factors like temperature, rainfall, fire, winds, mountains, hills, etc.
Therefore, a Community is composed of a population of a species plus populations of other species. Thus, the correct option is A.
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an antibiotic is a type of medication that cures infectious diseases. why does the word antibiotic suggest that these medications would be ineffective against viruses?
Answer:
An antibiotic treats bacterial infections, not viral ones. For viruses, you would take antiviral medications.
Answer me!!!!
Read the descriptions of two experiments below.
Experiment 1: A group of students did a test to see if the
acidity of water affects the growth of pea plants. They
followed a logical method and performed their experiment
once, using a control group and experimental groups. The
results supported their hypothesis.
Experiment 2: A group of students did a test to see if the
acidity of water affects the growth of bacteria in the water,
They used a control group and experimental groups. They
repeated their experiment several times and received the
same results each time.
Which experiment is more likely to be reliable, and why?
O A. Experiment 2, because it gave the same results every time
O B. Experiment 1, because its results supported the hypothesis
O C. Experiment 1, because it followed a logical method
O D. Experiment 2, because its setup included a control group
Answer:
A
Explanation:
Because it is giving you the same results ( i just did the test and got it right)
Answer:
a.
Explanation:
just took the test
do you think sewer lice is alive? why or why not?
Answer:
I don't now because i dont read or hear about it
Match the following: Hypoxia. A. May be cuased by tumors, mucus, or inflammatory material.B. May be caused by left sided heart failure.C. Huge amounts of harmful free radicals cause profound CNS disturbances, coma, and death D. Is difficult to identify in dark-skinned individuals.
Answer:
it is c
Explanation:
In order to determine whether you have hypoxia, your doctor will need to check the amount of oxygen in your blood. Therefore, option (C) is correct.
What do you mean by hypoxia?Hypoxia is low levels of oxygen in your body tissues. It causes symptoms like confusion, restlessness, difficulty breathing, rapid heart rate, and bluish skin.
Moreover, hypoxia is a state in which oxygen is not available in sufficient amounts at the tissue level to maintain adequate homeostasis; this can result from inadequate oxygen delivery to the tissues either due to low blood supply or low oxygen content in the blood (hypoxemia).
Hence, heart and lung function issues can lead to five categories of conditions that cause hypoxemia: ventilation-perfusion (V/Q) mismatch, diffusion impairment, hypoventilation, low environmental oxygen and right-to-left shunting.
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what is plasmolysis?
Answer:
plasmolysis is the process of shrinkage or contraction of the protoplasm of plant cell as. result of loss of water from the cell.
Answer:
Plasmolysis is defined as the process of contraction or shrinkage of the protoplasm of a plant cell and is caused due to the loss of water in the cell. Plasmolysis is an example of the results of osmosis and rarely occurs in nature.
The word Plasmolysis was generally derived from a Latin and Greek word plasma – The mould and lusis meaning loosening.
Explanation:
Answer from Gauth math
Which one of the following most accurately describes how the spindle poles are separated during anaphase B? Dyneins pushing spindle poles further apart from each other Myosin on actin tracks pulling the spindle poles into position Kinesins pushing spindle poles farther apart from each other Microtubules directly pushing and pulling on the spindle poles Kinesins pulling microtubules and spindle poles towards the periphery of the cell
Answer: im also stuck on this helpp
Explanation:
Answer:
B
Explanation:
B: Kinesins pushing spindle poles farther apart from each other
answer it answer it .
Answer:
Pseudopodia
Explanation:
Human uses his legs for locomotion and movement similarly in amoeba pseudopodia is used for movement in amoeba and other unicellular organisms. Pseudopodia is a structure in amoeba which is used for movement and locomotion in amoeba and it is also used for engulfing food, amoebic movement is also considered as a protoplasmic movement.Answer:
c
Explanation:
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Which of the following is not used to hold liquids?
a.
flask
b.
graduated cylinder
c.
balance
d.
test tube
Answer:
C. balance
This is because it is because a balance is an even distribution of weight hence balance is not used to hold the liquid instead a balance is used to weigh the liquid
Answer:
c. balance
Explanation:
2. Explain the factors that led Wilson to the idea of (a) studying small islets, (b) fumigating them, and (c) observing the recolonization of species.
Answer and Explanation:
The ecologists MacArthur and Wilson took the term island biogeography theory to refer to the predictions about the number of species that could be inhabiting on an island.
Island biogeography theory establishes that the two factors that affect species richness in natural communities on an island are the distance from the mainland and the size of the island.
At the same time, these factors affect inmigration and extinction rates. According to the theory, islands that are closer to the continent have higher possibilities of receiving immigrants than those islands that are located farther from the mainland. This is the effect of distance.
The effect of size is reflected in the relation between island size and species diversity. In smaller islands, the probability of extinction is higher than in bigger islands. Bigger islands can have more species than smaller ones.
In the case of two islands of the same size and different distance to the mainland, both of them will have the same extinction rate, but the one closer to the continent will have a higher immigration rate, and so, a higher amount of species. The S value will be higher on the island closer to the continent.
Experiment:
To prove that the observations about the species richness and its relation to island size and distance to the continent were not a casualty, manipulation experiments were developed. These experiments helped to prove how the colonization process take place from cero. To observe the entire process of ecological succession and the tendencies proposed by the island biogeography theory Wilson and Simberloff (1970) eliminated the fauna on some islands to observe how they were recolonized from the continent. They fumigated the mangler island and studied these islands to account for the variation in arthropod richness over time. They studied many islands classified by distance. On each island, the richness increased at different rates. The island closest to the continent received more immigrants and is colonized faster than the other ones, reaching its original richness faster. The farthest island was recolonized but at a much lower rate and it does not reach equilibrium while the study was going on. Although, it was expected to reach equilibrium with time.
What climate zone includes much of North America, Europe, and Asia?
A. Temperate zone
B. Polar zone
C. Pacific zone
D.Tropical zone
Polar zone includes much of North America Europe and Asia
lol anyone?
the weather calls for icy roads to the city scatter salt in the road. explain how this may affect plants that are next to the road?
Explanation:
A common way to clear icy roads is to apply a layer of salt, which lowers the freezing temperature of water and melts the ice.
A living microorganism or its toxin may cause human disease that is transported through the US MAIL MUST be marked as a:________.A. MordantB. VirusC. InfestationD. Etiologic agent
what has a greater influence on protien levels
Question is incomplete, The complete question is as follows:
What has a greater influence on protein levels?
A. Protein degradation has a greater influence because they are denatured faster than the cell can produce them
B. mRNA destroyer concentration has a greater influence because it is destroying mRNA before proteins can even be produced
C. mRNA destroyer concentration has a greater influence because mRNA is destroyed right after the proteins are produced
D. Protein degradation has a greater influence because outside factors like antibiotics can cause it, and it is difficult to recover from
Answer:
B. mRNA destroyer concentration has a greater influence because it is destroying mRNA before proteins can even be produced
Explanation:
mRNA destroyer concentration has a greater influence on protein levels because mRNA destroyers abort the mRNA as soon as the enough mRNA are produced before formation of proteins.
mRNA destroyer follow the mRNA around itself and dragged it once mRNA is picked for protein synthesis.
Hence, the correct answer is "B".
Vanessa attempts to freeze liquid mercury. Which statements describe particle arrangement and motion that occur in mercury?
Answer:
Volume of mercury decreases due to close arrangement of particles.
Explanation:
When we freeze liquid mercury, its volume decreases and density increases from from 13.69 g/cm3 to 14.184 g/cm3 and form a solid mercury. The motion of particles stop when we freezes liquid mercury and the particles settles into a stable arrangement. If we cool the liquid mercury and the temperature reaches to -38.83 °C, then it converts from liquid into solid substance.
ANSWER FAST Which statement about cell theory is INCORRECT? New cells are spontaneously created from existing cells. All organisms are composed of one or more cells. Cells are the basic unit of life and structure. New cells are created from existing cells.
Classify the events according to the gas they primarily contribute to the atmosphere.
#1 goes to methane, #2 goes to oxygen,#3 goes to carbon dioxide,#4 goes to carbon dioxide. make sure you double check.
Explanation:
A plant can produce oxygen sufficient for the consumption of four people whereas carbon dioxide absorbed by the plant is more than forty-eight pounds. The total release of carbon dioxide by livestock is 15 % of the greenhouse gas production whereas methane production is 155-264 pounds. When a forest fire happens it releases a massive amount of carbon dioxide which is around 1.8 million tons.
What are greenhouse gases?Greenhouse gases are gases such as methane, carbon dioxide, CFCs, and HFCs. They have impacted the atmosphere negatively. The concentration of these gases is highly rising in the atmosphere at an alarming rate. These gases trap the heat of the sun and do not leak out.
Therefore, the emission of greenhouse gases should be monitored.
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give a short introduction of carl von linnaues and rh whittakers regarding classification of living beings one major point
What are Carotenoids?
A. Pigments that reflect purple light.
B. Pigments that reflect green light.
C. Pigments that reflect orange light.
D. Pigments that reflect blue light.
(Scientific method please answer) A _________ is an educated guess about the answer to a question.
Answer:
A hypothesis is a possible explanation for a set of observations or an answer to a scientific question. A hypothesis could also be called an "educated guess". Another way of thinking about it, is that a hypothesis is a possible answer to the question you've asked.
hoped i helped
The leading strand runs in a
direction and is replicated
A. 5' to 3', continuously
B.5' to 3', discontinuously
C. 3' to 5', continuously
D. 3 to 5', discontinuously
Answer:
option C is correct that is 3` to 5` continuously
Explanation:
when replication begins the two parent DNA strand are separated one of this is called leading strand and is replicated continuously in the 3` to 5` direction the other strand is lagging strand and is replicated discontinuously in short sections
Which of the following will cause a decrease in the mass of an object? A. Increase in the gravitational pull B. Decrease in the gravitational pull C. Increase in the quantity of substance present in the object D. Decrease in the quantity of substance present in the object
Answer:
C
Explanation:
ayudaa por fa es para mañana
teniendo en cuenta la lectura uno de los métodos más rápidos económicos y eficaces para eliminar las bacterias del agua es la
A. desinfección
B. esterilización
C. cloración
D. inmunización
Which is represented by the image?
Answer:
represent by image.
Explanation:
To store an image on a computer, the image is broken down into tiny elements called pixels. A pixel (short for picture element) represents one colour. ... In order for the computer to store the image, each pixel is represented by a binary value. We call this representation of colours a “bit-plane”.
According to the theory of plate tectonics,which is one feature that plates carry?
Answer:
According to the theory of plate tectonics, seafloor features do plates carry.
Explanation:
There are many rough spots which can no longer hold, the sudden release of the built-up motion releases, and the sudden movement under the sea floor causes a submarine earthquake in the area.
Answer:
seafloor
Explanation :).
Fish developed many characteristics for survival. Match the parts of the fish to their correct functions.
allow the fish
to breathe
underwater
protects the fish
from the external
environment
creates balance and
helps with escape
and predation
eye
gills
fin
mouth
scales
The fish breathes by using its gills. The outer scales protect themselves from the outer environment. Fins are for creating balance and protection. Mouth and eye is for predation.
What are the characteristics of fish?
A fish is classified as a vertebrate because it has a vertebral column. There are different types of fish, such as cartilaginous fish and bony fish. In cartilaginous fish, the endoskeleton is made up of cartilage, and this is seen in some large deep-sea animals such as sharks.
Bony fish such as Labeo rohita have endoskeletons made up of bones. This bone is stronger and harder than the cartilage. Most deep-sea animals lack bony skeletons because the pressure exerted on the body at that depth causes them to sink; this is why they evolved in this manner. Some fish can store an oil-like structure that helps them maintain body functions. Some have an air bladder that maintains the proper position.
Hence, the fish does breathe through its gills. The outer scales protect themselves from the outer environment. Fins are for creating balance and protection. Mouth and eye is for predation.
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Which of the following represents a mutualistic relationship?
1 point
Both organisms benefit
Both organisms do not benefit
One benefits and the other is unchanged
One benefits and the other is harmed
Food moved to the back of the mouth by the tongue causes all of the following EXCEPT covering the opening of the larynx by the epiglottis. pressure against the pharynx to initiate swallowing. elevation of the soft palate to seal off the nasal cavity. the swallowing center stimulates successive waves of muscle contraction in the esophagus. churning of the stomach contents.
Answer:
churning of the stomach contents.
Explanation:
When food is moved to the back of the mouth by the tongue (deglutition), it does not cause the churning of the stomach contents.
The churning of stomach contents occurs when the bolus from the mouth has entered through the lower esophageal sphincter into the stomach. Churning is the mixing of the bolus with digestive juices containing acids and enzymes secreted from the stomach lining.
An organism that reproduces asexually will have
Answer:
An offspring identical to itself.
Explanation:
The difference between asexually reproduction and sexually reproduction is that when you asexually reproduce, you are simply duplicating yourself. There are many ways you can asexually reproduce, like after a certian growth time, you would just simply split yourself. A part of you can just come off too. The last one is franmentation. It is when you take a big part of you off, and then if it was big enough, it would grow. (Occurs in Starfish). But when you sexually reproduce, two haploids would come together, creating a diploid which would duplicate. And asexually reproduction, you would already start with a full set of genes. (Which is identical to your mother's)