Darwin studied actual birds on the Galapagos Islands instead of using a simulation, as you did in this lab. Studying natural selection in the field can be challenging. List at least three possible challenges Darwin might have faced.
Answer:
1. Darwin did not know how genetic material passed from one generation to the next because Mendel's laws of heredity had not yet been formulated
2. Finches have many phenotypic adaptations that can not be observed easily
3. Phenotypic traits are expected to evolve slowly, thereby taking many generations
Explanation:
In the Galapagos Islands, Darwin observed that there were many varieties of finches that showed variation in the size and shape of their beaks. Darwin determined that finches' beaks evolved in response to environmental changes (finches' beaks were different in different islands). Darwin had several challenges to make this discovery. First, Mendel's laws of heredity had not yet been formulated, thereby difficulting the analysis of quantitative traits (in this case, finches' beak) which are the result of the combined action of many genes and the environment. Second, finches (as well as all species) possess many phenotypic adaptations, thereby difficulting the study of single traits in an evolutionary context. Finally, phenotypic changes are gradual and therefore descendence with modification cannot be easily recognized by observation in the field.
Answer:
Traits other than beak type might affect natural selection.
It could take many generations to observe adaptions to a population.
The environment may be complex and hard to study.
Changes in the environment may occur faster or slower than changes to the birds
The birds may be interdependent with other organisms that may change, too.
Explanation:
just took the quiz
this the sample
surface area of the cell
Answer: Depending on the volume ratio of the cell you can identify the surface area.
Explanation:
Food-borne illnesses can have substantial health and economic consequences. Correctly identify the steps that can lead to food-borne illness by Salmonella/Campylobacter and E. coli 0157:H7
1. Bloody diarrhea and hemolytic uremic syndrome can result
2. Live E. coli 0157:H7 bacteria are ingested
3. A Shiga-like toxin is produced
4. Incomplete cooking of raw hamburger fails to kill all pathogens
5. Live Salmonella or Campylobacter bacteria are ingested
6. Diarrhea, abdominal pain and nausea can result.
7. Incomplete cooking of poultry and fruits/vegetables fails to kill all pathogens
8. The pathogen multiplies in the intestinal tract for 2-48 days
Answer:
4,6,5,1,3
Explanation:
Which of the following is NOT a way that humans can reduce flooding?
Building a flood control dam
Removing trees and grass
growing near rivers
Building levees and walls
Making a river deeper or straighter
How could the pressure of a gas increase if temperature is constant?
Answer:
Gay Lussac's Law - states that the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature. If you heat a gas you give the molecules more energy so they move faster. This means more impacts on the walls of the container and an increase in the pressure.
Explanation:
When selecting food, the most nutritious option is to select whole foods.
O True
O False
Answer:
true
Explanation:
Eating more whole foods will help you cut down on calories from the added fats and sugars we get from processed and fast foods. Whole grains. You might think the benefits of whole grains have mostly to do with fiber, but there's so much more than that
Which of the following is the mRNA codon of the DNA code, ATC CGA GTC? Why?
A. TAG GCT CAG
B. UAG GCU CAG
C. TAG GCU CAG
Answer:
The answer is B.
Explanation:
In DNA sequence, A will pair with T and C will pair with G. During mRNA, T will convert into U.
Answer i rlly don't know big dawg my bad cuddie choose b tho
Explanation:
jhbgvcbhnjklkjhgf
in which amino acid imidazole group found
Answer:
Histidine contains imidazole group which can be uncharged or positively charged, depending on its local environment. Lysine & arginine contains positively charged R group while glutamate has negatively charged R group.
the more kinetic energy is in a collision
a) The more potential energy is released
b) The more sound energy is released
c) The less potential energy is released
d) the less sound energy is released
Answer: A
Explanation:
elk with large antlers are able to fight off other males and will dominate The herb are
Answer: disruptive
Explanation:
how do organelles interact in the production and use of hemoglobin found in theses cells
Answer:
B
Explanation:
Answer:B
Explanation:
Which characteristic of viruses prevents them from being used as evidence to support cell theory?
O Viruses do not have nuclei.
O Viruses cannot move by themselves.
O Viruses replicate only inside host cells.
O Viruses can have glycoproteins on their surfaces.
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Answer:
Viruses replicate only inside host cells.
Explanation:
Viruses are not used as evidence to support the cell theory because they are not considered a cell and cannot carry out vital life processes without getting into host cells.
According to the cell theory, the cell is the basic unit of life, all living organisms are made up of cells and cells arose from preexisting cells. A virus that is not in a host cell is just a piece of DNA/RNA surrounded by a protein coat and is not capable of carrying out any life process for it to be considered living.
Viruses are only able to reproduce and multiply when they get access to a living host. They use the genetic mechanisms of the host to replicate their DNA/RNA using the lytic or lysogenic cycle. Hence, they are not used to support the cell theory.
What happens first during cellular respiration?
A. The movement of small organic molecules into a mitochondrion
B. The breakdown of food molecules into smaller organic molecules
C. The formation of many molecules of ATP
D. The breakdown of small organic molecules into carbon dioxide
Answer:
B
Explanation:
Answer:
b
Explanation:
i took the quiz
Galileo and newton both study the night sky. Galileo study Jupiter and its moons. Newton study the gravitational force that held the planets in orbit. Which of these statements best explains why the two scientist propose different theories about the solar system?
a. both scientist had different interests.
b. both scientist lacked scientific evidence.
c. they wanted to be the first to discover new planets.
d. they wanted to contradict each other‘s theories.
Answer:
a. both scientists had different interests.
Explanation:
Newton focused in physics for the most part and the study of what we know now as Newton's laws
while Gallileo focused on planets and astrology
PLEASEEE I NEED HELP it’s brain pops worksheet Worksheet
Identify It
Identify which image is a chromosome and which is a double helix. Then answer the questions below.
Answer:
first one is chromosome and second one is double helix
Explanation:
idek if that's what your asking lol hope you do good
First image is the double helix and the second one is chromosome.
What are chromosomes?A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are the histones.
Chromosomes allow DNA to be accurately copied during these cell divisions. So one more time. Chromosomes are found in the nuclei of our cells and allow DNA to be accurately copied during cell division.
Chromosomes are arranged in ordered haploid sets around the centre of the metaphase plate at mitosis in several grass species and hybrids.
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what feature (s) would you fin in the northwestern part of the united states
A. an island arc
B. earthquakes
C. volcanoes
D. earthquakes and volcanoes
(please help lol)
Answer:
B
Explanation:
Describe the 3 ways plant seeds are dispered by other organisms.
Answer:
wind
sporulation
animals
Explanation:
Answer:
Plants can't walk to different places and take their seeds somewhere else they have developed other methods to move their seeds. The most common methods are wind, water, animals, explosions and fire. Dandelion seeds float in the wind.
Explanation:
There are five different types of seed dispersal and they are gravity, wind, ballistic, water, and animals.
Excess Post Exercise Oxygen Consumption (EPOC) occurs, most often as a result of
a. High intensity interval training (HIIT)
b. Low intensity endurance training
C. Short term, moderate intensity strength training
d. ALL of the above
Next Previous
Answer: all of these exercise modes, but less likely with low intensity endurance training.
Explanation: exercise increases respiration requirement and therefore oxygen requirement. Energy stores (glycogen) are used first but with then the body needs to maintain energy production at an increased level. There is a limit to how quickly energy can be supplied from respiration and additional energy is generated anaerobically with the by product being lactic acid. An ‘oxygen debt’ is incurred because normal homeostasis requires the metabolism of lactic acid and energy for repair of any cellular damage, requiring oxygen consumption above what is required for normal resting metabolism. It is possible in elite athletes that during low intensity training they may be able to operate aerobically for an extended period.
Which conclusion is best supported by the information?
A. The protist is an animal-like flagellate because it has
a flagellum.
B. The protist is a plant-like dinoflagellate because it
produces oxygen.
C. The protist is a plant-like dinoflagellate because it was
found in salt water.
D. The protist is an animal-like flagellate because it has
a nucleus.
Answer:
The correct answer is - B. The protist is a plant-like dinoflagellate because it produces oxygen.
Explanation:
Protists are a eukaryotic organism that is not a plant, animal, or fungi but definitely, they all arise from a common ancestor as these single-cell organisms with cell organelles like the nucleus. These shows similarities with all three kingdoms of the eukaryotes. It shows similarities with the animals they move and depend on the particle outside of their body for nutrition and energy.
Plants-like protists are the protist or dinoflagellates that present in freshwater, marine water perform photosynthesis and provide oxygen and glucose in the water for and maintain the oxygen in the water for the organism to breath.
Plant-like protists are essential to the ecosystem. They are the base of the marine food chain, and they produce oxygen through photosynthesis for animals to breathe
Answer:
b
Explanation:
Water and wind can
soil, or carry
or carry it away.
Answer:
what are you trying to ask about?
Answer:
move soil
Explanation:
because the wind can carry the soil/move the soil
From which vessels does heart get its blood supply?
Answer:
coronary arteries
Explanation:
Two major coronary arteries branch off from the aorta near the point where the aorta and the left ventricle meet. And they create a muscle with blood which is coronary arteries
How are land plants adapted to survive on land? What are the benefits of living on land rather than in water?
Answer:
Sample Response: Plants that are able to survive on land developed specialized vascular tissue such as xylem and phloem. This vascular tissue aids in the transport of water and other resources needed by the plant. Land plants also developed a cuticle, or waxy layer, to prevent water loss and seeds to protect young plants. The benefits of living on land are greater access to sunlight and less competition with other plants for resources.
Explanation:
BRAINLIEST
Which of the following processes add carbon dioxide to the atmosphere? *
Photosynthesis
Cellular respiration
Decomposition by decomposers
All of the above
a & b
b & c
Answer:
All the above
Explanation:
I'm not 100% sure this is accurate. Good Luck!
Good science depends on interactions...
A. within the government
B. within the a group of scientists who all agree
C. within the scientific community
D. within those in authority in the science world
Answer:
c i took the k12 test
Explanation:
Good science depends on interactions within the scientific community. Thus, the correct option for this question is C.
What is Science?Science may be defined as the branch of scientific study that significantly deals with the stalking and application of knowledge and understanding that is based on the natural and social world following a systematic methodology based on evidence and inference.
Science is further classified into three categories such as physics, chemistry, and biology. Each of them illustrates detailed information on the basis of their attributes, principles, concepts, etc.
Science always involves the scientific analysis of facts and understanding based on the natural world. It always deals with the concept of interaction between the scientific community related to biotic and abiotic factors distinctly.
Therefore, good science depends on interactions within the scientific community. Thus, the correct option for this question is C.
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How do parachutes work?
5-10 sentences
Use all these terms in your paragraph: Gravity, Acceleration, terminal velocity, force, air resistance.
Help plssss
Answer:
A parachute works by forcing air into the front of it and creating a structured 'wing' under which the canopy pilot can fly. Parachutes are controlled by pulling down on steering lines which change the shape of the wing, cause it to turn, or to increase or decrease its rate of descent.
Under which condition is the speed of cellular chemical reactions within a cell most likely to decrease?
Answer:
The products of the reaction decreases
Explanation:
When the product are formed in a chemical reaction it leads to decrease in chemical reaction rate in a cell.
What Factors Affect the Speed of Chemical Reactions?Some chemical reactions are fast and some are slow due to presence of different factors.
The collision between the reactants specially at the reactive site of the molecule will be needed to complete the chemical reaction.
So larger the size of reactant slower be the reaction or even no reaction occur due to less collision.
The more surface area of the particle lead to more collision and faster the reaction.
More Concentration of chemical reactants lead to faster the reaction rate. Higher the pressure of the reactant lead to faster the reaction rate.
Increasing in temperature can also lead the molecules move faster, average kinetic energy of the molecule can also increases.
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Interphase is the part of the cell cycle during which these phases occur:
A. Growth 1, Synthesis, Growth 2
B. Growth 1, Synthesis, Growth 2, Mitosis
C. Growth 1 and Growth 2
D. Mitosis and Cytokinesis
Answer:
The correct answer is - A. Growth 1, Synthesis, Growth 2.
Explanation:
The cell cycle has three important phases Interphase, M -phase and cytokinesis. Interphase is the laongest phase of eukaryotic cell cycle. This phase shows no observational change in the cell, however, it collects nutrients, generates protein and replicates DNA and prepare the cell for the M- phase.
Interphase has 3 phases G1, S, and G2 phase. G1 phase is the phase that collects nutrients and increase the size of the cell for the cell division. S phase or synthesis phase is the phase takes maximum time in cell divivon and acompanied by protein generation, duplication of the genetic material. G2 phase is preparatory phase that prepeare the cell before the cell enter in the M - phase.
HELP PLEASE
need to find the average for the values
Answer:
Average for zero: 51.1
Average for two: 76.3
Average for four: 87.4
Average for six: 103.3
Blank 1: 51.1
Blank 2: 76.3
Blank 3: 87.4
Blank 4: 103.3
Explanation:
The above answers gave the average of each of the set of numbers.
To calculate the average of a set of numbers, It is done by simply summing the numbers and then dividing the numbers by the total number of values in that set of numbers.
From the data given, zero, two, four and six all have their set of numbers. So, with those values, the average was calculated.
What have researchers found a correlation between with respect to black holes? HELP PLEASE QUICK
Answer: It’s A I think
Explanation:
I have no idea. Its Not D, im pretty sure. And I dont think it’s B. So it’s either A or C, and I think it’s A.
Answer: A
Explanation: just took the quiz and got it right
State a technology and
explain how it is used to
forecast a future event.
I don't really know your question but I will tell you what can be predicted.
But how can a technological forecast be made to contain probability dimensions in the same way other forecasts do? Most people think of a technology as a quite specific physical entity. They do not conceive of this entity as having the variable characteristics which would permit range forecasts or probability statements. To their minds, a precisely defined technology either will exist in a given situation, or it will not. And the forecaster must predict this exact event or else he is wrong. This misconception—which would place an impossible demand on any forecaster causes much of the confusion in discussions about technological forecasting.
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