Answer:
D. T- A
Explanation:
In dsDNA the bases in the two strands are paired through hydrogen bonds forming base pairs (bp). Adenine forms two H-bonds with thymine from opposite strand and vice-versa. Similarly, guanine is bonded with cytosine with three H-bonds. As a result, always a purine comes opposite to a pyrimidine.
A - T & G - C
The mechanism through which a parents gene is turned off, through the attachment of a methyl group to that parent's DNA is called :
A) methylation
B) mutation analysis.
C) cross contamination.
D) spermatogenesis or oogenesis.
Answer:
the answer is a methylation
Explanation:
If the eyes and jaws of a corpse appear stiff, about how much time has likely
passed since death?
Answer:
between 1 and 6 hours and believe the average though is 2-4
Answer:
big gangs
Explanation:
1. Water is the only substance that exists in nature as a solid, liquid, and gas
at Earth's
A researcher attempts to use a segment of ribosomal RNA as a molecular clock to calculate the date of the last common ancestor of two species. He finds that the two species diverged from a common ancestor 150 million years ago. These particular species have abundant fossil records that strongly suggest that these species diverged 100 million years ago. Which of the following answer choices best describes a reason for the discrepancy in the date of the last common ancestor of these species?
A. Ribosomal RNA is not a reliable molecular clock and should not be used for dating.
B. The neutral mutation rate used in calculating the last common ancestor date may not have been accurate.
C. It is highly likely that the two organisms did not share a common ancestor, so the results are invalid.
D. A large portion of the ribosomal RNA is not vital to survival, so it is not likely to be well preserved.
Answer:
B
Explanation:
It is B because the mutation rate should not have been accurate if it showes that they diverged 150 million years ago. But the abundant fossil records show that it diverged 100 million years ago.
Hope this helps:)
Ribosomal RNA is not a reliable molecular clock and should not be used for dating.
What is molecular docking?In structural molecular biology and computer-assisted drug design, molecular docking is an important technique. The purpose of ligand-protein docking is to anticipate a ligand's most common binding mode with a protein having a known three-dimensional structure.What is dating? Carbon dating is used to determine the age of ancient material such as an archaeological or paleontological specimen .A molecular clock estimates how long it has been since similar species separated from a common ancestor based on DNA sequences (or the amino acid sequence of proteins encoded by DNA).
Hence, the correct option is A.
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Given the following phylogenetic tree, which evolutionary event occurred most recently?
A.) development of different forms of symmetry.
B.) development of tissues.
C.) each of these traits evolved at the same time.
D.) protostome and deuterostome development.
Answer:
Option-D
Explanation:
A phylogenetic tree is a diagrammatic representation which is constructed in to show the common ancestors at the base of the tree and the branches represent the new species.
The phylogenetic tree which is constructed based on the traits evolved during evolution is known as a cladogram. In the given question, the cladogram represents the evolution of various groups of the organism from a common ancestor based on the traits evolved.
The trait which was evolved earlier is present at the base like the development of tissues while the most common trait is present at the top which is the development of deuterostome and protostome.
Thus, Option-D is the correct answer.
Father
B b
Mother
B
b
BB
Bb
Bb
bb
B=dominant
b = recessive
The gene for brown hair (B) in Goats
Consider the possible genotypes of the offspring of two heterozygous brown goats. The ratio of brown to white
offspring in this case would be
A)
1:3.
B)
2:2
3:1
D)
3:4
Answer:
C. 3:1
Explanation:
Bb is still dominate because the bigger letter takes over the smaller letter.
Theres 3 dominate genes (Brown) and 1 recessive (White)
What two things make blood pressure? *
A. pressure caused by contraction of heart ventricle and pressure exerted on blood by
walls of blood vessels
B. pressure caused by contraction of heart atrium and pressure exerted on blood by walls of blood vessels
C. pressure caused by stressful workload and pressure exerted by teachers
D. pressure caused by contraction of heart ventricle and pressure due to gravity
Answer:
I think it's A, I am not sure
Explanation:
To maintain a healthy diet, you should try to eat a diet rich in:
O green vegetables
2% milk
red meat
fruit juice
Answer:
I am not sure whether or not this is a statement or a question, but a healthy diet would consist of more diversity. You could live off of that and maintain a healthy body, but it would not be recommended.
Explanation:
Answer:
green vegetables
Explanation:
Which of the following lists the order of taxonomic levels from the largest to the smallest group?
domain, kingdom, class, order, family, phylum, genus, species
species, genus, family, order, class, phylum, kingdom, domain
class, family, order, domain, kingdom, phylum, genus, species
domain, kingdom, phylum, class, order, family, genus, species
Answer:
domain, kingdom, phylum, class, order, family, genus, species
Explanation:
which is d on edge 2021 :)
Domain, kingdom, phylum, class, order, family, genus, species is the correct order of taxonomic levels from the largest to the smallest group.
What is taxonomy?Taxonomy is a branch of science which deals with the classification of organisms on the basis of similarities and differences. It starts from domain and ends with species so we can say that domain, kingdom, phylum, class, order, family, genus, species is the correct order of taxonomic levels from the largest to the smallest group
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The ability to do work or cause change is called
energy
O force
O power
Owork
Answer:
energy
Explanation:
B vitamins and vitamin C are water soluble vitamins.
O A.
True
B.
False
Answer:
A. TRUE
Explanation:
"B-complex vitamins and vitamin C are water-soluble vitamins that are not stored in the body and must be consumed each day." says google
How do the cells and organs of the Skeletal and Muscular system work together?
Answer:
A tendon
Explanation:
Tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A tendon serves to attach the bone to muscle
What is something that happens when you change the wavelength?
Answer:
efd
Explanation:
imk a black ni gge r
which statement would most likely be used to describe variation
Answer:
"Variations that decrease reproductive success are more likely to be passed on" is the one statement among the choices given in the question that would least likely be used to describe variation. The correct option among all the options that are given in the question is the second option or option "B".
Explanation:
Answer:
Variations that decrease reproductive success are more likely to be passed on" is the one statement among the choices given in the question that would least likely be used to describe variation
Help please I need a. and b. For number 2
Answer:
they are both dominant
Explanation:
because of the capital P overrides tge lowercase p
Answer:
PP = purple and Pp = purple
Explanation:
Purple is dominant in both genotypes.
Which of these is true of fetal development by the end of the third trimester?
A. The placenta is absorbed by the uterus.
B. The fetus can survive outside the uterus.
c. All development is complete.
D. All growth is complete.
Answer:
B. The fetus can survive outside the uterus.
Explanation:
The third trimester starts in the wekk 28 (month 7 ) of fetal development and lasts until the birth pf baby, that is around week 40 (month 9) of pregnancy.
There are several changes occur in the thrid trimester of the fetal development such as hearing and visual has developed and the internal organs including the heart, lungs, intestines and stomach has developed enough.
So, at the end of fetal development of the third trimester as all the body organs have grown and developed, a fetus can survive outside the uterus.
The correct option is B.
Answer:
Option B
Explanation:
During the third trimester, the fetus continues to grow in weight and size however the body systems finish maturing. In fact, both mother’s body and the fetus continue to grow and change. Lungs, brain and kidneys keep maturing. Fetus position itself head-down and is 6 to 9 pounds in weight. Skull bones are soft but fetus become able to suck its thumb and cry. By 38 to 40 weeks, the lungs have matured fully . The end of third trimester marks the period when the fetus is ready for delivery. Hence option B is the correct answer
Both rock and bodies of water are considered a type of
A) water
B) soil erosion
C) reservoirs
in cycles of matter. When rock is exposed for mining,
A) water
B) soil erosion
C) reservoirs
can readily transport nutrients from rock to aquatic
ecosystems. Runoff that carries excess nutrients can cause algae blooms.
The effects of
A) water
B) soil erosion
C) a reservoir
also increase water pollution and can
clog waterways.
Check
Answer:
c
a
b
Explanation:
Both rock and bodies of water are considered a type of reservoirs. Thus, option C is correct.
In cycles of matter when rock has been exposed for mining, the answer is water. Thus, option A is correct.
Can readily transport nutrients from rock to aquatic ecosystems. Runoff that carries excess nutrients can cause algae blooms.The effects of soil erosion. Thus, option B is correct.
What is soil erosion?The removal of the top of the soil by water, wind and human activities has been called soil erosion. The reason due to which soil erosion takes [place is that trees should be planted in several rows to check the speed of the wind. This reduces soil erosion because of wind. Because the rivers cause soil pollution, dams are built in the upper course of the rivers to check soil erosion.
Soil erosion has happens when the dirt has been exposed to the high winds, heavy rains, and rushing water. In few circumstances, human activities, like farming and land clearance, expose soil to erosion. Soil erosion has been considered as the removal and transfer of the top layer of soil from its original location to another due to high winds and fast-running precipitation.
Therefore, Both rock and bodies of water are considered a type of reservoirs. Thus, option C is correct.
In cycles of matter when rock has been exposed for mining, the answer is water. Thus, option A is correct.
Can readily transport nutrients from rock to aquatic ecosystems. Runoff that carries excess nutrients can cause algae blooms.The effects of soil erosion. Thus, option B is correct.
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A newborn child was brought to the hospital nursery before he was marked with his parents' names. The hospital workers must use what they know
about genetic outcomes to determine whom the child belongs to. They use his traits to help them. The baby has freckles (F dominant), and attached
earlobes (I recessive). They believe that the baby most likely belongs to a couple in which the man has attached earlobes but no freckles. It is known that
the woman is heterozygous for freckles and earlobe type.
Complete the Punnett square below to determine the probability that the child belongs to this couple. List the possible combinations of the father's
alleles across the top and the possible combinations of the mother's alleles down the left side. Then write your answer in the space below. Include a
brief statement explaining how you reached your answer.
Answer:
Explanation:Which of the following equations are balanced correctly?
2Ag2O → 4Ag + O2
Zn + HCl → ZnCl2 + H2
Cu + H2O → CuO + H2
2C4H10 + 13O2 → 8CO2 + 10H2O
individuals joining a population is an example of
Which of the following ecological levels is correctly paired with its description?
A) Organism - all of the species living in a given area
B) Community - a group of one species living in a given area
C) Population - the regions on Earth that can support life
D) Ecosystem - all of the living and nonliving factors in an environment
E) Biosphere - anything that meets all of the characteristics of life
The correctly paired ecological level with its description is the option D. Ecosystem - all of the living and nonliving factors in an environment, among given options.
An ecosystem is a geographic region or area where all the living factors including animals, plants, bacteria, and others interact with all the physical or non-living factors such as landscape, humidity, water, and many more.
Other given ecological level and their description:
Organism - an organism is the living being that is the simplest form of ecological level composed of organ systems.Community - It is a population with similar characteristics that live in a particular area.Population - a group of members of a particular species living and interbreeding within a given area.Organisms > Population > community > ecosystemThus, the correct answer would be option D.
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What are the different possible gametes for AABBDd?
Answer:
8
Explanation:
Diffrent types AaBbDd
Contaminated water called leachate from _____ can pollute groundwater.
Group of answer choices
A.solid waste incinerators
B.bioplastics
C.compost bins
D.sanitary landfills
E.recycling centers
Answer:
option D
Explanation:
Infusion is formed by the leaching of water in waste in a landfill along with the transfer of certain contaminates. Contaminated water called infusion from sanitary landfills can pollute groundwater.
What is sanitary landfill?Sanitary landfill is a landfill where waste is decomposed into biologically and chemically inert materials in a setting which is isolated from the environment.
There are the following types of landfills:
Municipal solid waste landfills.Industrial waste landfills.Hazardous landfills.Contaminated water called infusion from sanitary landfills can pollute groundwater.
Thus, the correct option is D.
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Why is it essential that threatened
species compete for resources successfully
Answer:
Organisims compete to survive, like food, shelter, water amd more that is why it essential that threatened species compete for resources successfully
Why do the cells inside of your stomach get replaced every few days , but other cells in your body can live for weeks, months or even years?
Answer:
hi, this is the answer of your question
the cells that line your stomach can renew as fast as every two days, because they in contact with digestive acid.
Which is a
multicellular organism:
an atom, a molecule, a
cell, or a Komodo
dragon?
Answer:
Komodo dragon.
Explanation:
Animals, plants, and fungi are multicellular organisms
Indicate whether or not the following functions are performed by the excretory system.
____excreting waste materials
____excreting blood
____maintaining pH balance
____maintaining body temperature
____maintaining salt balance
____maintaining hormone levels
____maintaining water balance
Answer:
1. yes
2. no
3. yes
4. yes
5. yes
6. no
7. yes
Only excreting blood is the function that is not performed by the excretory system.
What do you mean by the Excretory system?
The excretory system may be defined as the system that consists of a pair of kidneys, ureters, and urinary bladder. It removes wastes from the body.
Excreting waste materials, maintaining pH balance, maintaining body temperature, maintaining salt balance, maintaining hormone levels (aldosterone), and maintaining water balance are all the functions that are performed by the excretory system.
Therefore, only excreting blood is the function that is not performed by the excretory system.
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explain how the products of photosynthesis are stored leaves!
Answer:
The products are stored in the form of starch because glucose is soluble
Explanation:
Answer:Although the cuticle provides important protection from excessive water loss, leaves cannot be impervious because they must also allow carbon dioxide in (to be used in photosynthesis), and oxygen out. These gases move into and out of the leaf through openings on the underside called stomata.
Explanation:
The motion of an object can be described by its
OA. speed.
OB. position.
OC. direction
OD. all of these
Answer: the correct answer is d) all of these . here so the other person can get brainlest . have a good day/ night!!
Explanation:
which example best describes how an X-ray machine works?
20 A QUESTIONS
O
Switching a flashlight on and off to transmit a message
0
Removing the batteries from a flashlight to keep a room dark
O Putting your hand in front of a flashlight beam to make a shadow
O
Shining a flashlight beam on a mirror to brighten a room
SUBMIT
Explanation:
putting hand in front of flash light
Answer: C
Explanation:
I just answered the question on a p e x
How can you decrease the effort force needed to push a weight to the top of the ramp? A) cover the surface with carpet B) increase the length of the ramp C) increase the height of the ramp D) decrease the length of the ramp
Answer:
B) increase the length of the ramp
Explanation:
Less force is needed to move the object over a longer distance.
Answer:
You can decrease the effort force needed to push a weight up the ramp if you increase the length of the ramp. You could also decrease the height of the ramp.Lengthen the ramp, decrease the mass of the object, use a machine can you decrease the effort force needed to push a weight
Explanation:
A ramp is an example of an inclined plane. Think back to the example of the ramp and the moving truck. The ramp reduced the amount of force needed to lift the box by moving it over a greater distance. The longer an inclined plane, the less force is required to move an object upward.
