Darwin proposed a theory of natural selection
What is the Darwinian theory in ?Darwin argued that species can evolve through time, that new species develop from older ones, and that all species descended from a single progenitor. According to this theory, every species has its own distinct set of heritable (genetic) differences from the common ancestor, which have been slowly accruing over very long time periods.
Charle's darwin theory of evolution by natural selection is the foundation upon which modern vocabulary theory is built.
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Which of the following statements best
describe what happens to the energy
released during cellular respiration in a
mouse?
Choose 2 answers:
A Some energy is transferred to the mouse's
muscles to power movement.
B Some energy is destroyed when it's lost as
heat to the environment.
C Some energy is used to help regulate the
mouse's internal temperature.
Answer:
a and c is the correct answer
Answer: Some energy is transferred to the mouse's
muscles to power movement (A)
Some energy is used to help regulate the
mouse's internal temperature. ()
Explanation:
The synthesis of sugar molecules through the process of photosynthesis requires energy absorbed from sunlight. Bearing this in mind, what kind of reaction is photosynthesis?.
Answer:
endothermic reaction
Explanation:
This means it cannot occur without energy (from the Sun).
Assume that a g1 somatic leaf cell nucleus in sunflower contains 16 picograms of dna. how much dna would be expected in a metaphase i cell of a flower?
A flower's metaphase I cell should have 32 picograms of DNA, based on the assertion made.
What is the metaphase?A phase of cell division known as "metaphase" (mitosis or meiosis). Individual chromosomes are typically dispersed throughout the cell nucleus. The chromosomes of the cell condense and move toward one another, aligning in the center of the dividing cell, and the nucleus of the cell disintegrates during metaphase.
What occurs first during the metaphase?Meiosis I's initial metaphase entails the alignment of paired chromosomes along the cell's middle (metaphase plate), guaranteeing that the two daughter cells that follow from meiosis I have two full copies of each chromosome.
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A__________ is a list of chronological steps that an experimenter must follow when
conducting an experiment.
Otrial
O "to do" list
procedure
conclusion
a fast-acting insecticide was spayed n a large population of cockroaches. Some cockroaches that are resistant to this insecticide survived. this is an example of:
a) Survival of the fittest
b) Species traits tend to remain constant
c) The environment does not change
d) None of the above
Natural selection offers adaptability to the species to survive and resist changes in nature. It is called survival of the fittest in nature. Thus, option a is correct.
What is natural selection?The theory of evolution of life is based on the concept of natural selection by species. Accumulation of variations in the species over long period of time leads to evolution of species.
The variation in traits allows the species to adapt and survive with the changes in the environment. Those species which successfully resist the changes in their environment, grow and reproduce further. This is thus an example of survival of the fittest in nature.
Thus, natural selection was an important concept proposed by Charles Darwin to predict the course of evolution.
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You are doing a study on the enzymatic effects of lysosomes and want to follow the whole process from the formation of the enzymes to their use in the lysosome. In what location of the cell would you begin this observation?.
Answer: You are doing a study on the enzymatic effects of lysosomes and want to follow the whole process from the formation of the enzymes to their use in the lysosome. In what location of the cell would you begin this observation? Endoplasmic reticulum.
8. True or false: Wind turbines are a leading source of bird deaths
A. True
B. False
Answer:
False. Cats are far and away the leading cause of 'unnatural' bird deaths, followed by collisions with buildings, vehicles, electrical lines, and communications towers. Wind turbine collisions are relatively small compared to these other threats.
Explanation:
Hope it helps! =D
All of the following are examples of passive transport except:____.
a. filtration.
b. osmosis.
c. endocytosis.
d. dialysis.
All of the given options are examples of passive transport except (c) endocytosis.
Passive transport refers to the movement of substances along a concentration gradient, i.e. from a higher concentration to lower concentration. No external energy is required in passive transport since the substances are moving down the concentration gradient.
On the other hand, endocytosis is an example of active transport. Active transport refers to the movement of substances against a concentration gradient, i.e. from a lower concentration to a higher concentration. Since it involves the movement of substances against the gradient, therefore, energy is needed to carry out this process.
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Please help asap NO LINKS PLS
What is the suggested first order of cells out of
anaerobic prokaryotes, multicellular eukaryotes,
photosynthetic prokaryotes, unicellular
eukaryotes?
Answer:
Anaerobic prokaryotes.
Explanation:
Hope this helps!
Scientists use science to____________________the world.
Answer:
Scientists use science to___Study_________________the world.
Explanation:
Hope this helps :)
cyanobacteria do not rely on other organisms for nutrition, but they do depend on other organisms for waste product removal. which cyanobacterial waste product can be toxic to them? choose one: a. carbon dioxide b. urine c. glucose d. oxygen
Cyanobacteria produce the waste product oxygen that can be toxic to them.
Cyanobacteria are also known by the name blue-green algae. These are the photosynthetic bacteria. They are also involved in the process of nitrogen fixation. Cyanobacteria are one of the earliest organism's that emerged in the world.
Since cyanobacteria are also involved in nitrogen -fixation activity. Hence they possess the enzymes for nitrogen fixation, which are sensitive towards oxygen. In the presence of oxygen, the nitrogen-fixing enzymes get inactivated. This is the reason why oxygen proves to be toxic to cyanobacteria. However, cyanobacteria do have a mechanism to carry out nitrogen-fixation separately in the chamber called heterocyst.
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Which of the following is NOT true about cytokinesis?
A. Begins in anaphase and continues on through telophase
B. Nuclei have taken on the appearance of interphase nuclei
C. Is the process whereby the cytoplasm of a single cell is divided to
spawn two daughter cells
D. Is first seen when the cell begins to pucker in, a process called
furrowing
Answer: A
Explanation:
I hope this helps!
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Thank you.
17. What product do all three reactions in Model 2 have in common?
In all the reactions, reactants release water as a by-product. Thus, this is a type of condensation reaction which is common in Model 2.
What is a condensation reaction?A chemical reaction in which two small molecules combine with each other to form a larger molecule is defined as a condensation reaction. Water is released as a by-product in this type of reaction.
Formation of sucrose, a disaccharide by combining two monosaccharides (Glucose + fructose) is an example of condensation reaction. Similarly, two amino acids are joined together to form a dipeptide through the elimination of water molecule.
Thus, condensation reactions are important in biochemistry for the formation of macromolecules.
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Answer:
Reactants release water as a by-product
Explanation:
determine all the possible modes of inheritance for the pedigrees. you are currently in a labeling module. turn off browse mode or quick nav, tab to items, space or enter to pick up, tab to move, space or enter to drop. pedigree a pedigree b pedigree c answer bank
Possible modes of inheritance for the pedigrees: A pair of alleles can inherit in one of three ways. Gregor Mendel (1822-1884), an Augustinian monk and botanist, demonstrated these patterns of inheritance using pea plant crosses.
The inheritance patterns are autosomal dominant, autosomal recessive, and X-linked.
Pedigrees and Inheritance Methods:
A pedigree is a chart that shows the blood connections between family members as well as which members of the family exhibit the trait or condition under investigation.
Pedigree Markers:
The pedigree symbols in the figures in this article are typical. Males are represented by squares, females by circles, while transgender or gender-neutral people are shown as diamonds for privacy purposes. Consanguineous marriages (marriages between blood relations) are indicated by a double line between the parents .
Building a pedigree is frequently the first step in finding a gene variant that causes a specific disease or feature. There are several words used in pedigree analysis.
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When Kevin was younger, he was amazed by dinosaurs and was always very fascinated by their extinction. He wants to study animals and ensure they do not become extinct in the future. Which career in biology would be best for Kevin? Why?
The career in biology that would be best for Kevin is to become a paleontologist.
What do you mean by Animal extinction?Animal extinction may be defined as the complete process of termination or elimination of a particular organism's species through the impacts of numerous consequences.
The branch of biology that significantly deals with the detailed study of prehistoric species is known as paleontology. This branch of biology determines the characteristics of past living organisms on the basis of their fossils.
Therefore, the career in biology that would be best for Kevin is to become a paleontologist.
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The universe is around 13. 5 billion years old, and homo sapiens could have been argued to have emerged in the last 200,000 years. If you scaled the life of the universe to one day long, starting at midnight and ending at midnight, at what time would homo sapiens emerge?.
Following this analogy, homo sapiens would appear at 23:59:58:72.
13.5 billion years is equal to [tex]13.5 x 10^{9}[/tex] years.
200,000 years is equal to [tex]2 x 10^{5}[/tex] years.
We can do a proportion:
[tex]13.5x10^{9} : 24 h = 2x10^{5} : X\\ X=24 h * 2x10^{5}/13.5x10^{9} = 3.56 x 10^{-4}h\\[/tex]
Because 1 hour has 3600 seconds, we can make the following proportion:
[tex]1 hour : 3600 s = 3.56x10^{-4}h : X\\X = 3.56x10^{-4}h * 3600 s / 1 h = 1.28 s[/tex]
This means that, if 13.5 billion years lasted 24 hours, 200,000 years would last 1.28 seconds. This does seem like a very small number for an immense period of time like 200,000 years, but it does put into perspective all the time that has passed since the creation of the universe.
So, homo sapiens would emerge 1.28 seconds before midnight or at
23:59:58:72.
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Suppose actively dividing eukaryotic cells were treated with a chemical that blocks the activity of the enzyme telomerase. What would happen to these cells?.
Cells would lose DNA at the ends of the chromosomes over many generations if treated with a chemical that blocks the activity of telomerase.
Telomerases are enzymes that add nucleotides to the ends of chromosomes since DNA polymerase III is unable to do so. It inserts TTAGGG sequences to the chromosomal ends roughly 1000 times. The inclusion of TTAGG sequences lengthens the original chromosome. Actively dividing eukaryotic cells treated with a telomerase inhibitor would be unable to duplicate the DNA at the tail end of their linear chromosomes.
As a result, the chromosomal ends are shortened. As cells divide, their chromosomes get shorter. Repeated sequences are added to the ends of the chromosomes, and the shortening process only shortens these sequences, leaving the major chromosomes containing genetic information intact. Telomeres therefore aid in the preservation of genetic information between generations.
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: minimally-invasive midline posterior interbody fusion with cortical bone trajectory screws compares favorably to traditional open transforaminal interbody fusion
In comparison to the conventional open TLIF procedure, midLIF required less time to perform and resulted in less blood loss.
What is MidLIF?
For the treatment of degenerative disorders, lumbar spinal fusion can be achieved using a variety of surgical procedures. Although midline lumbar interbody fusion (MIDLIF) provides a legitimate substitute for the more conventional pedicle screw trajectory, transforaminal lumbar interbody fusion (TLIF) is the most widely used method. This study's objective is to assess the clinical results from a cohort of patients who underwent MIDLIF in a single facility during the first training phase of the surgical team.
In comparison to the conventional open TLIF procedure, midLIF required less time to perform and resulted in less blood loss. These variations compare favorably to reported tubular minimally invasive TLIF values in the literature. In comparison to typical open TLIF, patient reported results from 6 weeks to 24 months after surgery, hospital length of stay, and reoperation/readmission rates all preferred MidLIF.
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The task of moving our bodies from one place to another belongs to our_______.
Answer:
the Locomotor system
Explanation:
the locomotion system is also known as the musculoskeletal system. it is made up of the skeleton, skeletal muscles, ligaments, tendons, joints, cartilage.
Kevin has learned about planarians, which are a species of flatworm. Some of these worms have two methods of reproduction. A planarian can produce new offspring by splitting itself and growing new body parts on each portion. Or it can mate with another planarian to produce offspring. Kevin believes that both methods of reproduction will produce offspring that are genetically identical to the parent. Do you agree? Explain your answer.
Answer:
No
Explanation:
Planarians reproduce asexually and sexually. In asexual reproduction, the offspring is made from only the genes of the mother planarian. Planarians splitting is an example of budding. Budding is asexual, and asexual reproduction creates a clone of the mom. Sexual reproduction uses both the genes of the father and mother, so the offspring is a mix of both the parent's genes. That means that the offspring is not a clone of either one of the parents.
A herd of deer lives in a forest where they eat the leaves of trees. The number of energy storage molecules in the trees and in the deer has increased. What has happened to the amount of carbon in the trees and in the deer?
The amount of carbon in the trees and in the deer . . .
a
has increased.
has increased.
b
has decreased.
has decreased.
c
has not changed.
has not changed.
d
is not related to the number of energy storage molecules.
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Which of the following correctly compares the changes that take place in an ecosystem during primary succession and secondary succession?
Primary succession takes place over a long period of time on newly formed land, while secondary succession quickly occurs in areas that has been disrupted by a natural disaster.
Primary succession takes place quickly on newly formed land, while secondary succession occurs over a long period of time in an area that has been disrupted by a natural disaster.
Primary succession takes place over a long period of time in an area that has been disrupted by a natural disaster, while secondary succession quickly occurs on newly formed land.
Primary succession takes place quickly in an area that has been disrupted by a natural disaster, while secondary succession occurs over a long period of time on newly formed land.
Answer:
Primary succession takes place over a long period of time on newly formed land, while secondary succession occurs quickly in areas that have disrupted by a natural disaster
Explanation:
The change in internal energy for a given system is –325 j. The system loses 155 j of energy as heat at the same time that it expands from an initial volume of 15. 0 l at 1. 00 atm of pressure. What is the final volume of the system in liters? enter your response without units to the nearest 0. 1 l.
(B) 16.7 L is the final volume of the system in liters when the change in internal energy for a given system is –325 j and he system loses 155 j of energy as heat at the same time that it expands from an initial volume of 15. 0 l at 1. 00 atm of pressure.
In thermodynamics, internal energy is a characteristic or state function that characterizes a substance's energy in the absence of capillary effects and the impacts of external magnetic, electric, and other fields.
The value of the energy is dependent on the substance's state, not the type of procedures used to get there, just as with any other state function. The work is equal to the change in internal energy when a system changes state as a result of a process in which only work is involved, according to the first law of thermodynamics.
The solution for the final volume of the system in liters when the change in internal energy for a given system is –325 j and he system loses 155 j of energy as heat at the same time that it expands from an initial volume of 15. 0 l at 1. 00 atm of pressure is attached which is 16.7 L.
We first must get the final volume (v2) after we plugged the equation (i) on the enthalpy. After getting the final volume, we will then convert the units to liter using the conversion factor of 1 L.atm = 101,325 J.
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Question correction:
The change in internal energy for a given system is -325 J. The same system loses 155 J of energy as heat at the same time that it expands from an initial volume of 15.0 L at 1.00 atm of pressure. What is the final volume of the system?
A) 13.3 L
B) 16.7 L
C) 32.0 L
D) 170. L
E) 185 L
what is the genue name for cocoa
Answer:
Theobroma
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Explication: Had to do a project about it
5. It takes 3 hours to cook an 8-pound turkey.
How long would it take to cook a turkey that is
14 pounds?
6.
The unitary method is a technique for problem-solving that involves first determining the value of a single unit, then multiplying that value to determine the required value.
It takes 3 hours to cook an 8-pound turkey. How long would it take to cook a turkey that is 14 pounds?
A problem can be solved using the unitary method by first determining the value of a single unit, and then multiplying that value to determine the required value. Essentially, the purpose of this procedure is to calculate the value of a unit from the value of a multiple.
It can be solved using simple unitary method.
Time taken by 8 pound turkey to get cooked = 3 hours
Therefore, time taken by 1 pound turkey to get cooked = (3/8) hours
Hence, time taken by 14 pound turkey to get cooked = (3/8*14) hours
= 5 hours 25 mins.
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Jess measured the door with the meter stick. Upon measuring, he found that the door to the classroom was 1.25 meters long. How many decimeters (dm) would this be?
Answer:
12.5 decimeters
Explanation:
Model 2 foot width in a high school classroom determine the mean for each data group, and describe in a complete sentence how you calculated them
Answer:
Good Luck... I have no idea
Red blood cells are specialised animal cells.
Compare the structure of a red blood cell with the structure of a plant cell.
Answer: Plant cell have cell wall, chloroplasts, large vacuole and vacuole is present in the center of the cell but in red blood cell cell wall, chloroplasts is absent and small vacuole is present.
Explanation:
Red Blood Cells are a type of specialized cells which are found in animals. These cells are present in large quantity in the blood as they contain hemoglobin protein which is responsible for the transportation of gases in the body.
What are Red Blood Cells?
Red blood cells are the specialized cells which are present in the blood of animals. These are responsible for the red color of blood. These cells does not have a nucleus and other cell organelles. The organelles are absent as cells require more space for carrying hemoglobin and transport gases.
Plant cells have a cell wall, chloroplast, large vacuole which is present in the center of the cell whereas in red blood cell the cell wall, chloroplasts are absent. A RBC has no nucleus however plant cells contain nuclei. RBCs are concave in shape.
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Which area should have the lowest temperatures?
Α 1
B. 2
C. 3
D. 4
Answer: A 1
Explanation: A 1 has th highest altitude. Hope this helps!
5. which of these variables effects on diffusion and osmosis were tested in this lab. choose all that apply by highlighting or underlining the variable.
The variables which affects the rate of diffusion and osmosis includes Temperature, solubility of molecules, size of molecules, concentration gradient, polarity of molecules.
What is diffusion?
The movement of molecules along a concentration gradient is known as diffusion. It is a significant process that all living things go through. Diffusion facilitates the flow of materials into and out of cells. Until the concentration gradient is the same everywhere, the molecules travel from the region of higher concentration to a region of lower concentration.
There are several variables that have an impact on the diffusion and osmosis processes, and they each separately and collectively change the rate and extent of diffusion. These elements consist of:
Temperature.Interaction Zone.The particle's size.the gradient of concentration's steepness.Complete Questions
What are the variables which effects on diffusion and osmosis were tested in this lab? choose all that apply by highlighting or underlining the variable.
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