Answer:
Transient killer whales prey on marine mammals, while resident killer whales prey on Chinook salmon
Explanation:
Remember, the term "ecotypes" is used to refer specifically to the observable differences found in the various kinds of whales, which includes their breeding populations, their language of communication, social structure, the type of food they eat, and their hunting behavior.
Thus, in the case of transient and resident killer whales in the Northeast Pacific, they are thought to represent different ecotypes rather than different species the Transient killer whales prey (feed) on marine mammals, while resident killer whales prey on Chinook salmon. Also, whales are generally thought to belong to the same species.
Help right answer please ??A fertilized egg receives 50% of its chromosomes from a sperm and 50% from the egg. Which process ensures that the sperm and egg contain only 50% of the chromosomes of an organism?
fertilization
meiosis
mitosis
mutation
The process that ensures that sperm and egg contain only 50% of the chromosomes of an organism is meiosis. The correct option is B.
What is meiosis?Meiosis is a type of cell division that occurs in reproducing organisms and results in a reduction in the number of chromosomes in gametes. Human body cells are diploid, with two sets of chromosomes (one from each parent).
Meiosis is a type of cell division that produces four gamete cells while reducing the number of chromosomes in the parent cell by half.
This process is necessary for the production of egg and sperm cells for reproduction.
A cell with a single set of chromosomes is referred to as haploid. The term haploid can also refer to the number of chromosomes in gametes, which are egg or sperm cells.
Meiosis occurs in primordial germ cells, which are distinct from the body's normal somatic cells and are designated for reproduction.
Thus, the correct option is B.
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It is important for any organism to maintain its boundaries, so that its internal environment remains distinct from the
external environment surrounding it.
Answer:
It is important for an organism to maintain its boundaries so that its internal environment
It is important for any organism to maintain its boundaries, so that its internal environment remains distinct from the external environment surrounding it. Without some sort of negative feedback mechanism, it would be impossible to keep our body chemistry in balance.
In order to understand how environmental dynamics will affect an ecosystem's structure and processes, scientist have developed a single
model to use. True
False
Answer:
False.
Explanation:
In order to understand the dynamics of the environment and the ecosystem it's essential to first understand the ecosystem structure and functioning and for that scientists have created diverse models. The structures for environmental analysis as no single structure can give a detailed explanation of the working of the environmental variables.If a DNA molecule is 22% adenine in any organism, which percentage of thymine will that DNA molecule contain?
Answer:
22% thymine
Explanation:
adenine is paired with thymine meaning there will be equal amounts.
Sickle cell anemia is a hereditary medical condition that affects red blood cells and is thought to protect against malaria, a debilitating parasitic infection of the liver and the blood. This protection would explain why the sickle-cell trait is found in people who originally came from Africa, where malaria is widespread. A landmark study in Africa tested children for the sickle-cell trait and for malaria infection. In all, 30% of the children had the sickle-cell trait, and 8.5% of the children had both the sickle-cell trait and malaria. Overall, 34.5% of the children had malaria.
Answer:
The answer is below
Explanation:
The complete question is:
(a) What is the probability that a child has either malaria or sickle-cell? Please use 3 decimal places.
(b) What is the probability that a child has neither malaria nor sickle-cell? Please use 3 decimal places.
(c) What is the probability that a child has malaria given that the child has the sickle-cell trait? Please use 3 decimal places.
(d) What is the probability that a child has malaria given that the child does not have the sickle-cell trait? Please use 3 decimal places.
(e) Are the events sickle-cell trait and malaria independent? What might that tell you about the relationship between sickle-cell and malaria
Answer:
Let S represent sickle cell anemia and M represent malaria. Hence, Given that:
P(S) = 30% = 0.3, P(S ∩ M) = 8.5% = 0.085, P(M) = 34.5% = 0.345
a) P(that a child has either malaria or sickle-cell) = P(S ∪ M) = P(M) + P(S) - P(S ∩ M)
P(S ∪ M) = P(M) + P(S) - P(S ∩ M) = 0.345 + 0.3 - 0.085 = 0.56 = 56%
b) P(that a child has neither malaria nor sickle-cell) = P(S ∪ M)' = 1 - P(S ∪ M) = 1 - 0.56 = 0.44 = 44%
c) P(child has malaria given that the child has the sickle-cell trait) = P(M / S)
From conditional probability, P(M / S) = P(M ∩ S) / P(S) = 0.085/0.3 = 0.283 = 28.3%
d) P(S') = 1 - P(S) = 1 - 0.3 = 0.7
P(M ∩ S') = P(M) - P(S ∩ M) = 0.345 - 0.085 = 0.26
P(child has malaria given that the child does not have sickle-cell trait) = P(M / S')
From conditional probability, P(M / S') = P(M ∩ S') / P(S') = 0.26/0.7 = 0.371 = 37.1%
e) Two events are independent if the occurrence of one event does not affect the other event. Malaria and sickle cell traits are not independent events because there is evidence of a biological link between the two conditions
Which statement describes the reaction for cellular respiration?
The equation is carbon dioxide + water > glucose + oxygen + water and energy is required in the form of light
O The equation is glucose + oxygen → carbon dioxide + water and energy is produced in the form of ATP.
The equation is carbon dioxide + water → glucose + oxygen + water and energy is produced in the form of ATP.
O The equation is glucose + oxygen → carbon dioxide + water and energy is required in the form of light.
Ο Ο
Answer:
B
Explanation:
The equation is glucose + oxygen ==> carbon dioxide + water and energy is produced in the form of ATP.
Answer:
The equation is glucose + oxygen -> carbon dioxide + water and energy is produced in the form ATP
Explanation:
Which question can be answered by science?
A. When is the most enjoyable time to go grocery shopping?
B. How much energy does it take to make a paper bag?
C. Should the government be regulating the use of grocery bags?
O D. Is it O.K. to force people to recycle their grocery bags?
Answer: A . How much energy does it take to make a paper bag
Explanation: Apex
What would most likely happen if a person increased the amount of saturated fat in his or her diet?
The persons risk of cardiovascular disease would increase
Answer:
Weight gain and obesity, risk of cardiovascular disease, if the fats are sugar there will be tooth decay and diabetes.
Suppose the human trait for freckles is controlled by a simple dominant and recessive relationship at one locus. Freckles, F, is the dominant allele, and a lack of freckles, f, is the recessive allele. In a college genetics class, the professor takes a tally of the number of students who have freckles and those with a lack of freckles. In this class of 123 students, 98 have freckles. Calculate the frequency of the dominant allele, F, and the heterozygous genotype, Ff. Assume there is no chance affecting this trait.
Answer:
f (p) = 0.55
F (pq) = 0.495
Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached file.
(0,-8) and (3,-2) find the distance between each pair of points
Answer:
The distance between the points is 6.71 unit
Explanation:
Given points;
(0,-8) and (3,-2)
The distance between the points is given by;
[tex]d = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}[/tex]
where;
x₁ = 0, x₂ = 3
y₁ = -8, y₂ = -2
[tex]d = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2} \\\\d = \sqrt{(3-0)^2 + (-2-(-8))^2} \\\\d = \sqrt{(3^2) \ + (-2+8)^2}\\\\ d = \sqrt{3^2 +6^2 } \\\\d = \sqrt{45} \\\\d = 6.71 \ unit[/tex]
Therefore, the distance between the points is 6.71 unit
100 PONITS!!!!!!!!!!!!EASY!!!!!!!
If all cells come from other cells, why is it that the cells are not all in the same phase at the same time?
Answer:
cell of different species can not me
BRO2.____________________________produce evidence that helps to answer important questions or could also lead to new questions. investigation theory law none of the above
Answer:
The correct answer is investigation
Explanation:
Investigation here means scientific investigation or experiment. In scientific process, when a new phenomenon is observed, an hypothesis is made in an attempt to explain the concept behind the observation. An experiment/investigation is then embarked upon to determine if the hypothesis provides the right answer or perspective to this observation. The outcome/conclusion of this experiment after repeated trials is referred to as theory while a theory tested over a long period of time is a law.
However, if the experiment doesn't confirm the hypothesis, new questions or hypothesis will have to be proffered
As you might expect, in both the individual and published results, Select word pairings had the highest pleasantness rating, while the lowest pleasantness ratings were given to the Select word pairings, with the remaining word type falling between these two extremes, in terms of perceived pleasantness of associated syllables.
Answer: Positive; Negative
Explanation:
As you might expect, in both the individual and published results, positive word pairings had the highest pleasantness rating, while the lowest pleasantness ratings were given to the negative word pairings, with the remaining word type falling between these two extremes, in terms of perceived pleasantness of associated syllables.
No context is provided however this should be the right answer. Positive word pairings elicit a happier feeling in humans so they will have a higher pleasantness rating. Words such as money and happy for instance have very high pleasantness ratings.
Negative word pairings on the other hand will have the lowest pleasantness ratings as they have more sombre connotations.
Which of the following is NOT a principle included in the modern cell theory? A.New cells are formed only by division of a preexisting cell B. The cell is the basic unit of structure and function for all organisms C.Living cells appear spontaneously from nonliving matter D.All living things are composed of one or more cells
Answer:
C
Explanation:
C is what we would call spontaneous generation which was debunked
Which of the following fields focuses on the investigation of the laws of nature?
A. science
B. technology
C.mathematics
D. engineering
Answer:
science and technology
Explanation:
the terms law diverse usage in many cases across all fields of natural science (physics, chemistry, astronomy, geoscience, biology).
Answer:
1
Explanation:
What would be the most likely effect of a large area of forest being cleared by logging?
An increase in animal respiration rate would cause an increase in carbon dioxide in the area.
Less carbon dioxide would be removed from the atmosphere in that area by producers
The availability of habitats for small rodents and birds in the area would increase.
More energy would be available for the primary consumers in the area.
Can someone please answer this
Less carbon dioxide would be removed from the atmosphere in that area by producers would be the most likely effect of a large area of forest being cleared by logging. Hence, option B is correct.
What are deforestation and its effects?The deliberate clearance of forested terrain is known as deforestation. Forests have been cleared throughout history and into the present era to make room for agriculture and animal grazing as well as to obtain wood for fuel, manufacture, and construction.
Across the world, deforestation has significantly changed the terrain.
Thus, less carbon dioxide would be removed from the atmosphere in that area by producers would be the most likely effect of a large area of forest being cleared by logging. Hence, option B is correct.
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Science extends our understanding of creation. TRUE or FALSE
Answer:
true
Explanation:
How cells,organs,tissue,and the organ system related?
The table shows the commonly eaten foods of some groups of organisms.
Commonly Eaten Foods List
Group Commonly Eaten Foods
A owls, raccoons, salmon
-----------------------------------------------
B birds, fruits, nuts, blossoms
---------------------------------------------------
C branches, barks, twigs, acorns
------------------------------------------------------
D vegetables, meat, grains
---------------------------------------------------
Which groups contain both primary and secondary consumers?
1. A, B
2. B, C
2. C, D
3. B, D
Answer:
3. B, D
Explanation:
A primary source is an animal that eats only plants. (herbivore) A secondary source is an animal that only eats herbivores (carnivores)
B has birds; which are food for carnivores, and fruits, nuts, and blossoms; which are food for herbivores.
D has vegetables and grains; which are food for herbivores, and meat; which is food for carnivores
The other options have only food for carnivores, or only food for herbivores, so the answer is 3
Answer:3. B,D
Explanation:
The table below lists a number of substances that are common on planet Earth. What are the five most abundant substances present in the Earth's atmosphere? Argon Silicon Dioxide Oxygen Ozone Carbon Monoxide Nitrogen Water Carbon Dioxide Sulfur
The order of elements by volume-fraction (which is approximately molecular mole-fraction) in the atmosphere is nitrogen (78.1%), oxygen (20.9%), argon (0.96%), followed by (in uncertain order) carbon and hydrogen Explanation: google.
Answer:
nitrogen
oxygen
argon
carbon dioxide
water
Explanation:
it is correct on study island
Fill n the blanks with the terms provided. Not all terms will be used.
lactase
pancreatic amylase
protein synthesis
starch
mitosis
DNA polymerase
secretd
excretd
protein
Enzymes are produced through ____________ within cells. Once formed, the location of enzymes secreted varies. Enzymes may remain within the cell. An example of an enzyme that does this is _______ protein synthesis polymerase that helps to form new DNA. Enzymes may also become embedded in the plasma membrane. The enzyme________does this.It can be found in the plasma membranes of small intestine cells. As a final option, some enzymes wil be___________from the cell and used and used by other cells. An example of this can be seen with pancreatic production of__________. Once it is released from the pancreas, it participates in ________digestion in the smal intestine.
Answer:
Enzymes are produced through protein synthesis within cells. Once formed, the location of enzymes secreted varies. Enzymes may remain within the cell. An example of an enzyme that does this is DNA polymerase that helps to form new DNA. Enzymes may also become embedded in the plasma membrane. The enzyme lactase does this. It can be found in the plasma membranes of small intestine cells. As a final option, some enzymes will be secreted from the cell and used by other cells. An example of this can be seen with pancreatic production of pancreatic amylase. Once it is released from the pancreas, it participates in starch digestion in the small intestine.
Explanation:
Enzymes are a special type of protein that have the important function to catalyze chemical reactions - this means that the lack of a certain enzyme will result in an important chemical reaction not happening, or happening at a much lower rate. These chemical reactions can be anabolic (meaning the creation -synthesis- of a molecule) or catabolic (which refers to the destruction -degradation- of a molecule).
For example, like the paragraph above explained, enzymes in the digestive tract have the task to convert the food that we ingest into smaller particles that can be absorbed by our intestines and used as nutrients. If one of these enzymes were to be absent, that specific nutrient wouldn't be properly digested - as it happens in people that are lactose intolerant (they lack the enzyme lactase, so they can't digest lactose, the sugar present in dairy products).
How is an apex consumer different from a primary consumer? Give an example.
Answer: Within an ecological food chain, Consumers are categorized into primary consumers, secondary consumers, tertiary consumers. Primary consumers are herbivores, feeding on plants. Caterpillars, insects, grasshoppers, termites and hummingbirds are all examples of primary consumers because they only eat autotrophs (plants). (noun) consumers with few to no predators of their own, residing at the top of their food chain. Explanation:
Both molecules and compounds are made up of 1.molecules 2.compounds 3.atoms
Two or more atoms joined together by shared electrons
form 1. A compound 2.an element 3.a molecule
Substances made from two or more different elements are 1.molecules 2.atoms 3.compounds
Answer:
1 atoms
2 molecule
3 compound
what does the Coriolis effect cause? apex
A. currents to the left-counterclockwise-regardless of location
B. currents to bend to the left-counterclockwise-in the northern hemisphere
C. currents to bend to the right-clockwise-regardless of location
D. currents to bend to the right-clockwise- in the northern hemisphere
Answer:
It's D
Explanation:
The reason for this is because the Coriolis effect causes currents and cyclonic weather weather systems to bend to the right in the northern hemisphere and left in the southern hemisphere.
*If it includes clockwise and counterclockwise, I believe northern hemisphere is clockwise and southern hemisphere is counterclockwise.
The Coriolis effect causes currents to bend to the right-clockwise- in the northern hemisphere.
An object, when moving on any rotating system undergoes an additional acceleration produced by a "force" perpendicular to the movement.
The result that this "force-acceleration" causes to the object is a deviation of its path that gives rise to a curved path, this "force" is the Coriolis effect.
The rotation of the Earth has an effect on objects that move on its surface called the "Coriolis Effect."When an object starts a movement pointing in a direction in the Northern Hemisphere, whatever that direction, the actual trajectory is curved to the right with respect to the initial direction.In the Southern Hemisphere it produces deviations to the left of the movements.Therefore, we can conclude that the Coriolis effect deflects ocean currents to the right in the northern hemisphere, and to the left in the southern hemisphere.
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A fish tank that is 50 gallons can hold how many 2inch long fish? a 25 b 12 c 15 d 50
Answer:
A. 25
Explanation:
According to this question, a 2inch long fish is present in a tank of volume 50 gallon.
The number of fishes the tank can contain can be derived by dividing the volume of the tank (50gallon) by the length of the fish i.e.
50 gallon ÷ 2 inches
= 25
Therefore, the tank will contain 25 fishes of length 2inches
MULTIPLE CHOICE QUESTION
What is the function of the nucleus?
It controls what enters and exits the cell
It is where proteins are created in the cell
It contains the genetic material in eukaryotes
It packages and sorts proteins
Answer:
a
Explanation:
Gizmo Warm-up When a person has a disease, his or her normal body functions are disrupted. Some diseases, such as diabetes and most cancers, are not spread from one person to another. But other diseases, such as the flu and strep throat, can be spread. These diseases are known as infectious diseases. Infectious diseases are caused by viruses, bacteria, and other agents known as pathogens. In the Disease Spread Gizmo, you will be able to observe how various pathogens can spread through a group of people. Click Play ( ) and observe. 1. Describe what happened on the SIMULATION pane
In the Gizmo warm-up,on STIMULATION, people begin to move around the room, after a while and after a person visits the buffet table, the person is likely to turn green,then overtime,the number of the green people increase.
When a person changes color on stimulation,the person's color change means/indicates that the person has been infected with a disease.
The color green further indicates that the disease the person is infected with is a food-borne disease.
The degree to which the findings of a study may be applied to a larger population represents how
sample is.
A inaccurate
B. generalizable
C. convenient
D. large
Please select the best answer from the choices provided
Ο Ο Ο Ο
С
D
Answer:
B
Explanation:
If the sample and research findings are applicable to the larger population size, then it shows that the sample used is generalizable. Thus, option B is correct.
What is generalizable?Generalizable is a wide and general application that a sample or an object possesses over others and can be used in research and academics to show the extension of the topic.
It is used to describe the study that can be applied to more and wide areas as it uses random and probable samples. It helps conduct comparative research as it is applicable in many areas.
Therefore, generalizable is the correct blank.
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The complete question is attached to the image below.
The cytoskeleton of a eukaryotic cell plays a major role in organizing the structures and activities of the cell. The cytoskeleton consists of three main types of fibers: microfilaments, intermediate filaments, and microtubules. The three types of fiber differ in size, composition, and the functions they perform in the cell. A structure of the cytoskeleton including microfilaments, intermediate filaments, and microtubules. Intermediate filaments are the thinnest ones, and microtubules are the widest ones. Drag the terms on the left to the appropriate blanks in the sentences on the right. Terms can be used once, more than once, or not at all.
1. In eukaryotic flagella, the fibers that slide past one another due to the activity of dynein proteins are _______.
2. Many cell organelles, most notably the nucleus, are anchored by which are assembled from a diverse class of proteins.
3. Centrosomes are sites where protein dimers assemble into ________.
4. The extension of pseudopodia in amoeba is due to the regulated assembly and destruction of ______.
5. The only cytoskeletal fibers not associated with intracellular movement or whole cell locomotion are the _______.
6. During muscle contractions, myosin motor proteins move across tracks of ______.
Answer:
1. Microtubules
2. Intermediate filaments
3. Microtubules
4. Microfilaments
5. Intermediate filaments
6. Microfilaments
Explanation:
According to this question, the three main types of fibres found in the cytoskeleton of eukaryotic cells are microfilaments, intermediate filaments, and microtubules. They serve different functions in the cell.
1. MICROTUBULES are proteinous fibres found in cells. They are responsible for the functionality of the eukaryotic flagella as they slide past one another due to the activity of dynein proteins.
2. INTERMEDIATE FILAMENTS are one of the three types of cytoskeletal fibres found in eukaryotes. They are made of different proteins and provide structural support/anchorage to many cell organelles, most notably the nucleus.
3. Centrosomes are organelles found in cells responsible for organizing proteinous fibres called MICROTUBULES. Hence, they are are sites where protein dimers assemble into microtubules.
4. Microfilaments are narrow cytoskeletal fibres made of protein called ACTIN. MICROFILAMENTS are actively involved in locomotion or movement, hence, their regulated assembly and destruction is responsible for the extension of pseudopodia in amoeba.
5. As mentioned earlier, INTERMEDIATE FILAMENTS are one of the three cytoskeletal fibres but the only one not involved in intracellular movement or locomotion. They are rather supportive fibers.
6. Muscle contractions is as a result of the activities of ACTIN AND MYOSIN proteins, which are components of a type of cytoskeletal fibre called microfilaments. Therefore, myosin motor proteins move across tracks of MICROFILAMENTS during muscle contraction.
What is the effect of large populations of deer on ecosystems?
Answer:
White-tailed deer fill the niche, or role, in ecosystems of both herbivore and prey. They are affected by, and themselves affect, their ecosystem. In forests, they have been described as a “keystone species” because their feeding activity can directly and indirectly affect many plants and animals.
