Answer:
1. D (In population genetics, gene flow is the transfer of genetic material from one population to another.)
2. C (Genetic drift may cause gene variants to disappear completely and thereby reduce genetic variation. It can also cause initially rare alleles to become much more frequent and even fixed. When there are few copies of an allele, the effect of genetic drift is larger, and when there are many copies the effect is smaller.).
3. A and also E (Individuals with inherited characteristics that allow them to best compete for limited resources will survive and have more offspring than those individuals with variations that are less able to compete. Because characteristics are inherited, these traits will be better represented in the next generation.)
4. D (Gene flow can increase fitness but if it happens in another environment, it decreases the adaptability. If alleles are advantageous, the offsprings' inheritance increases.
5. B (Mutations are the main source of alleles)
Describe the necessary steps from observing a specimen with 4X objective lens to observing the same specimen with 100X objective lens under the light microscope.
In order to observe a specimen under 4X objective lens, the following procedures must be observed:
Set up the microscope ensuring that the lens have been adequately cleaned and the light source is workingMount the object on a slide and place the slide on the stage of a clean microscope.Switch the revolving nose piece to ensure that the 4X objective is in positionSwitch on the light sourceBring the object into focus by using coarse and fine adjustment knobs.Ensure that the image of the object is centered on the stage.In order to observe the same specimen under the 100X objective:
Switch the revolving nose piece to fix the 100x objective in place.Only use the fine adjustment knob to bring the image into focusIf the image will not resolve properly, a few drops of immersion oil may be applied to the slide to improve resolution.More on microscopy can be found here: https://brainly.com/question/13137774
1) Why does the addition of dideoxynucleotides to the DNA sequencing reaction cause DNA synthesis to stop after the modified nucleotide is added?
A)Because once a modified nucleotide is incorporated into the DNA, there is no free 5'OH group to attach the next nucleotide being added.
B)Because once a modified nucleotide is incorporated into the DNA, there is no free 3'PO4-group to attach the next nucleotide being added.
C)Because once a modified nucleotide is incorporated into the DNA, there is no free 3'OH group to attach the next nucleotide being added.
D)Because once a modified nucleotide is incorporated into the DNA, there is no free 5'PO4-group to attach the next nucleotide being added.
In Sanger sequencing, once a modified nucleotide is incorporated into the DNA, there is no free 3'OH group to attach the next nucleotide being added. This phenomenon is useful to sequence a polynucleotide chain.
Dideoxynucleotides (ddNTPs) are nucleotide inhibitors of the DNA polymerase, it is for that reason that they are used in Sanger sequencing.
The ddNTPs are similar to natural deoxynucleotides used by cells during ADN replication; however, ddNTPs lack a hydroxyl (OH) group on the 3’ carbon of the deoxyribose.
In consequence, once a ddNTP is added, DNA synthesis cannot progress, thereby this phenomenon can be used to determine the order of nucleotides during the elongation of a polynucleotide DNA chain.
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What was the universe immediately before the Big Bang occurred?
a black hole
a singularity
a super spiral galaxy
a mass of antimatter
the answer is a black hole
The universe immediately before the Big Bang occurred as a black hole. Thus, the correct option is A.
What is the Big bang?The big bang may be defined as the cosmic explosion that significantly marked the initiation of the universe according to the big bang theory. The origin of the universe is explained by the Big Bang theory.
At initial, the whole universe appeared like a black hole where no life is present. It was all the dark around each and every corner. The universe was an infinite stretch of ultrahot, dense material and everything consisted of empty space.
Before the big bang, the universe was almost infinitely small, dark, and a size less than a trillionth of a second. It was a period of inflation which is followed by a more catastrophic event which was violent, and known as the period of expansion.
Therefore, the universe immediately before the Big Bang occurred as a black hole. Thus, the correct option is A.
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Explain why it is not possible to make a conclusion from
this experiment.
Answer:
impossible every experiment have a conclusion
One person pulls on a rope with a force of 400 N to the right. Another
person pulls on the opposite end with a force of 600 N to the left. What is
the net force?
Two forces are applied on the rope of the magnitude 400N to the right and 600N to the left, as a result of these forces the net force on the object will be 200N. Thus, the correct option is A.
What is Net force?Net force is the resultant force of the total force which is being applied on an object. It is the sum total of the effect of all the forces on an object. Forces which are applied in opposite directions cancel out each other.
If the net force applied on an object is not zero, then it can be said that the object is not in equilibrium, and thus Newton's Second Law can be used to determine the motion of the object.
Here, two forces of different magnitudes and in opposite directions are applied on the rope to pull the rope. The forces are 400N to the right and 600N to the left.
As a result of these forces, the net force applied on the rope can be calculated by:
Net force = Difference between the forces applied in opposite directions or the sum of the forces which are applied in same direction
Net force = 600N (force applied to the left) - 400N (force applied to the right)
Net force = 200 N and the direction will be left as the magnitude is more in left direction than right
Therefore, the correct option is A.
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Lwhat is the length between basepairs in nieocleoid of e.coli
Answer:
As the length of a complete turn of a double helix is 3.4 nm long and each of them contains 10 base pairs, we can determine the distance between two consecutive pairs by simply dividing the length of the complete turn by the number of base pairs in it. The distance 3.410nm i.e. 0.34 nm. Note: Even though E.
HELP NEED ANSWER IN AT LEAST 5 MINUTES will give brainliest All of the following are apart of the cell theory except: O All cells carry out the life process O All cells within multicellular organisms are identical O All organisms are made of one or more cells O All new cells come from pre-existing cells
Answer:
All organisms are made of one or more cells. O All cells carry out life processes. O All…
Explanation:
Match the organism with the biome where you would expect to see it.
Answer:
What are the 26 states of matter?
Bose–Einstein condensate.
Fermionic condensate.
Degenerate matter.
Quantum Hall.
Rydberg matter.
Rydberg polaron.
Strange matter.
Superfluid
research historical and present ecosystem services in tonle sap. what services depend on size and timing of annual floods? how have human activities affected those in the past
Explanation:
A floods timming is affected
why is the carbon cycle important to marine science. 4-5 sentences
An animal cell that is surrounded by fresh water
will burst because the osmotic pressure causes
A. water to move into the cell.
B. water to move out of the cell.
C. solutes to move into the cell.
D. solutes to move out of the cell.
Answer:A
Explanation:
The osmotic pressure in the animal cell is higher than that in the fresh water.
The flow of water is from low osmotic pressure to high osmotic pressure.
The water moves into the cell and then bursts.
Which term can avoid traveling through a solid, a liquid, or a gas?
The term that can avoid traveling through a solid, a liquid, or a gas is "electromagnetic radiation" or "light."
Electromagnetic radiation: Electromagnetic radiation refers to the propagation of energy in the form of waves or particles through space. It includes various types of radiation, such as visible light, radio waves, microwaves, X-rays, and gamma rays.Traveling through solids: Solids have a tightly packed arrangement of atoms or molecules, which makes it difficult for electromagnetic radiation to pass through them. The particles in solids interact with the radiation and absorb or scatter it, preventing its transmission.Traveling through liquids: Liquids have a less rigid arrangement of particles compared to solids. While some electromagnetic radiation can pass through liquids, it may be partially absorbed or scattered due to interactions with the liquid molecules.Traveling through gases: Gases have widely spaced particles, allowing electromagnetic radiation to travel more freely compared to solids and liquids. However, certain gases can still interact with specific types of radiation, such as absorbing certain wavelengths or causing scattering.Overall, electromagnetic radiation, or light, has the unique property of being able to propagate through a vacuum, which means it can travel through space where there is no matter present, as well as through various mediums, including gases, liquids, and solids.
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convert 30 ft to cm .......................................
What organ system is responsible for Gaseous exchange between external environment and blood
Answer: That would be the Respiratory System.
Explanation:
Answer:
the respiratory system
Explanation:
Coral reefs are home to a quarter of all marine species on earth. what is one consequence of declining coral reefs?
Answer:
Marine life decreases and the food chain will have e a drastic change as well
Which statements describe the solar system ? Check all that apply.
Answer:
The solar system includes the Sun, planets, and moons.
The planets travel in orbit around the Sun.
Other planets help scientists understand Earth history.
Explanation:
I think this is what you want
Answer:
The solar system is the sun and everything that orbits around it. It includes the planets and their moons as well as numerous asteroids and comets. These objects are all held in orbit around the sun by the sun's strong gravity.
A person jogging from the forest to the office covers the 6,800
meters in 2 hours. Their speed is not constant and they slow down
and speed up at various times. What is their average velocity?
Round the answer to the hundredths place if necessary.
a 1.9 m/s north
b. Impossible to calculate since the speed wasn't constant.
C. 0.9420/s north
d. 56.67 m/s north
e. 1.34 m/s north
f. 0.56 m/s north
[tex]\\ \sf\longmapsto Avg\: Velocity=\dfrac{Total\: displacement}{Total\:time}[/tex]
[tex]\\ \sf\longmapsto Avg\: Velocity=\dfrac{6800}{7200}[/tex]
[tex]\\ \sf\longmapsto Avg\: Velocity=0.9420m/s[/tex]
Answer:
0.9420m/s north
Explanation:
Given,
Displacement (Total) = 6800 metres(m)
Time = 2 hours
We need to convert hours to seconds.
2 hours = 7200 seconds
We know,
[tex]\sf\longmapsto \: Average \: velocity = \frac{Total \: Displacement}{Total \: time} [/tex]
Let's start solving!
[tex]\sf\longmapsto \: Average \: velocity = \frac{6800 \: metres}{7200 \: seconds} [/tex]
[tex]\sf\longmapsto \: average \: velocity = 0.9420\: m/s[/tex]
Question 8
1 pts
s
When a person jumps off the diving board and they spread their whole body out in the
air, they will hit the water with a loud smack. This is called a "belly flop". This is due to a
unique property of water called
O capillary action
O surface tension
Odensity
O temperature
< Previous
Next >
Answer:
Surface Tension
Explanation:
Plants absorb carbon during which process?
A. Transpiration
B. Absorptive Synthesis
C. Respiration
D. Photosynthesis
Answer:
photosynthesis
Explanation:
this is because, plants use the carbon dioxide to prepare their own food through photosynthesis
Which of the following materials would not normally be found in glomerular filtrate?
A. Glucose
B. Urea
C. Water
D. Protein
Answer:
B
Explanation:
PLS ANSWER NOW THANK YOU :):) NEED HELP QUICKIn
1-2 sentences, describe the process of deposition and explain how it creates new landforms. :):)
Deposition is the geological process in which sediments, soil and rocks are added to a landform or landmass. Simply when layers of eroded material pile to create new landforms. For example, coastal deposition is how beaches are formed.
The geological process of deposition involves the addition of sediments, soil, and rocks to a landform or landmass. when eroded debris is piled up in layers to produce new landforms.
What is deposition?A deposition is testimony made under oath and taken down in writing by an authorized officer of the court, typically in an out-of-court setting and before trial.
Depositions are usually taken from key witnesses, but can also involve the plaintiff or defendant, to give the involved parties a fair preview of all the evidence.
The individual making the deposition is known as the deponent and false statements can carry civil and criminal penalties.
Therefore, The geological process of deposition involves the addition of sediments, soil, and rocks to a landform or landmass. when eroded debris is piled up in layers to produce new landforms.
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Hello,
Can someone re-word this well for 50 points?
"The lab allowed me to model and observe stream and river processes. Using a virtual model, I compared low and high velocity streams or rivers, low and high gradient streams or rivers, and low and high volume streams or rivers. I found that higher velocity streams or rivers can cause more erosion, as do higher gradient and higher volume streams or rivers. Not only did these factors move more small sediment, they also moved larger pieces of sediment."
Answer:
Explanation:
This lab here allowed me to model and notice the stream and river processes. I found that higher celerity streams or rivers can cause more abrasion, as do higher gradient and higher volume streams or rivers. Not only did these factors move more small sediment, they also moved bigger pieces of the sediment rock.
Which statement is true about dichotomous keys?(1 point)
Dichotomous keys can only be used to classify organisms based on their habitats.
Dichotomous keys can only be used to classify organisms based on their observable traits.
Dichotomous keys can only be used if the name of the species is unknown.
Dichotomous keys can only be used if the name of the species is known.
The dichotomous key is a classification tool based on morphological characteristics. The correct option is B. Dichotomous keys can only be used to classify organisms based on their observable traits.
What is a Dichotomous key?A dichotomous key might be considered a significantly useful tool to classify organisms.
The key provides an easy and fast way for identification by describing different morphological observable traits, leading you to the correct taxonomic classification.
The term dichotomous refers to how information is provided. You will always have two options (a and b, or 1 and 2), and you will have to choose one of them according to the characteristics of your organism.
Each time you choose an option, it leads you to the following description, which gets more specific each time.
Probably you might need an atlas or a dictionary to understand some of the technical terminologies.
You will also need to carefully observe your specimen, to get to distinguish different traits. If the specimen is too small you might need a loup.
The correct statement is B. Dichotomous keys can only be used to classify organisms based on their observable traits.
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Answer: 1. they lack roots 2. Dichotomous keys can only be used to classify organisms based on their observable traits. 3. domain 4. Both focus on illustrating taxonomic relationships between organisms. 5. domains
Explanation: just took the quick check made 5/5 hope this helps :)
what occurs if resources within a population are limited
Answer:
Explanation:
As resources are depleted, population growth rate slows and eventually stops,This is known as logistic growth.
Can you help me with this question?
Answer:
Explanation:
I DONT KNOW THE ANSWER
when a plant sweats or emits water is called
Answer:
Overall, this uptake of water at the roots, transport of water through plant tissues, and release of vapor by leaves is known as transpiration
Explanation:
transpiration
Hope this helped you- have a good day bro cya)
1. A severe weather watch means which of the following?* (
(1 Point)
The conditions are right for severe weather, but it is not occurring yet.
Severe weather is occurring
Severe weather has passed through and it is now safe to go outside
It is the season during which type of severe weather concerned occurs.
Answer:
Its the first one because a watch means it could happen (this one is random) but if its a warning that means EVACUATE AHHHHHHHHHH.
Explanation:
Your welcome :3
whut is a biofultproduc
What would most likely be the effect if an experimental design specifies only an experimental group?
1. The experiment will lack a control.
2. The experiment will lack a purpose.
3. The experiment will not be repeatable.
4. The experiment will not have variables.
The himalayan mountains were formed baecause of a
a.convergent boundary
B.transform fault
c.hot spot
D.divergent boundary
Explanation:
because of convergent fault (B).
hope this helps you.