Answer:
Origin. Nuclear and mitochondrial DNA are thought to be of separate evolutionary origin, with the mtDNA being derived from the circular genomes of bacteria engulfed by the early ancestors of today's eukaryotic cells.
Explanation:
Which geological feature(s) are/is formed by the deposition of sandy, sediments?
Group of answer choices
a cliff
a canyon
sand dune
delta
Select the correct answer.
Which of the following bacteria is found on human skin?
OA. Shigella
OB.
Escherichia coli
O C. Staphylococcus aurea
OD.
Salmonella
Answer:
The answer is C.
List three ways in which plants use water
Answer:
Water helps in the germination of seeds. (ii) Water helps in the process of photosynthesis by which plants prepare their food. (iii) water helps in the transport of nutrients and minerals from soil to the plant
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Which of the following systems does NOT excrete some form of waste ?
A: Urinary
B: Integumentary
Or C: Skeletal
Answer:
Option C is write answer
su**
What does RNA have that DNA does not ?
Answer:
The major difference between DNA and RNA is that DNA is double-stranded and RNA is single-stranded. DNA is responsible for genetic information transmission, whereas RNA transmits genetic codes that are necessary for protein creation. DNA is a long polymer with deoxyriboses and phosphate backbone. Having four different nitrogenous bases: adenine, guanine, cytosine and thymine. RNA is a polymer with a ribose and phosphate backbone. Four different nitrogenous bases: adenine, guanine, cytosine, and uracil.
Have a great day friend! :D
Answer:
RNA uses predominantly uracil instead of thymine present in DNA.
Explanation:
That’s what RNA has that DNA doesn’t.
Describe how gravity is associated with many erosional agents.
Answer:
Gravity is associated with many erosional agents, because the force of gravity tends to pull all material down the slope. is when a rill channel evolves to become deep and wide. glaciers are dense so they can carry large rocks and debris for a long distance.
Role of gravity in erosion, because gravity tries to draw everything down the slope, gravity is linked to numerous erosional agents.
What are erosional agents?Glaciers and running water both erode due to gravity. This is a result of gravity pulling water and ice downward. These are examples of indirect effects of gravity on erosion.
Due to the force of gravity, mass movement is an erosional process that carries rocks and sediments down slope. The material is moved from higher heights to lower elevations, where it can be picked up and moved to even lower levels by other carrying mechanisms like streams or glaciers.
Therefore, glaciers and running water both erode due to gravity. This is a result of gravity pulling water and ice downward. These are examples of indirect effects of gravity on erosion.
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Which of the following characters can NEVER be an adaptation?
Answer:
ahh......
where r the options??
please help me, i’ll give brainlist and points please don’t be one of those people that go “link below”
Answer:
The answer is 4.
Explanation:
First step :)
Which type of mutation reverses the direction of parts of a chromosome?
Deletion
Duplication
Inversion
Translocation
Answer:
Its "C" Inversion
Explanation:
I took the test and got it correct
Type of mutation reverses the direction of parts of a chromosome is inversion. The correct answer is option C.
What is the basic structure of chromosome ?The chromosomes are thread like structures present in the nucleus and the these chromosomes carry the genetic information in them from one generation to another.
Inversion inverts the structure of chromsome and it basically turns the chromsomes inverted.
Inversion is the process where one arm of the chromosome gets detached from the basic structure and it gets attached in the inverted direction.
This creates multiple copies of DNA turning it into genetic material and one of the X linked recessive disorders is haemophilia in which same type of mutation caused by the chromosome at the 8th position takes place.
Therefore, Mutation that reverses the directions of the part of the chromosome.
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There are no ____________ in the ____________ , located where the nerve fibers of the ____________ leave the eye and enter the ____________ . Consequently, this region of the retina is commonly called the ____________
There are no PHOTORECEPTORS in the OPTIC DISC located where the nerve fibers of the RETINA leave the eye and enter the OPTIC NERVE. This region is commonly called the BLIND SPOT.
The retina is an important layer of nervous tissue that covers the inside of the eye, in which the sensation of vision initiates.
Photoreceptors are specialized cells within the retina that respond to light stimuli. In the retina, there are two types of photoreceptor cells: cones and rods.
The blind spot is a small portion of the visual field of the eye that localizes in the optic disk within the retina.
There are no rods or cones (i.e. photoreceptor cells) within the optic disk.
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I need help question 14
Answer:ok
Explanation:
What functions do carrier proteins perform In
active transport?
Answer:
Carrier proteins bound to the molecule, change shape, and transport the molecule through the cell membrane and onto the other side.
Is it this one I am really confused rn
Answer:
it depends on what you're trying to do
what company should the school district choose?
Answer:
The answer is E you're on the right track :)
Explanation:
your second best choice would be B by the way *
[tex]\huge\underline\mathtt\colorbox{cyan}{North Company}[/tex]
Explanation:
Because it does not use oil or natural gas( which are non-renewable) Also it uses renewable resources (like solar or wind power)How does the anatomy of mitochondria allow it to do
cellular respiration?
Answer: Mitochondria have an important role in cellular respiration through the production of ATP, using chemical energy found in glucose and other nutrients.
I am eating a steak, where did the energy in that steak come from before it became part of cow?
Answer:
The nutrients from the grass was the origin of the energy.
Explanation:
Hope this helps :)
Plants lose __ % water to transpiration resulting in 10% increase in atmospheric water vapor which increases relative humidity and chance of precipitation.
A: 90
B: 10
C: 100
D: 45
Answer: A
Explanation: Transpiration is the loss of water from the plant through evaporation at the leaf surface. It is the main driver of water movement in the xylem. Transpiration is caused by the evaporation of water at the leaf–atmosphere interface. Up to 90 percent of the water taken up by roots may be lost through transpiration as only a small amount of that water is used for growth and metabolism.
Would you expect the cells from the root of a plant to be the same is structure and function as cells from a leaf
please help don't guess.. I have a d in biology and I'm trying to get a better grade. my parents keep hassling me about it please help
True or false The further you go back in a family tree the more changes you would expect
to find in a conservative gene.
la verdad que
Explanation:
Which of the vitamins would be potentially the most dangerous to
consume in high does (greater than 10 X RDA) as single micronutrient?
O vitamin A
O vitamin B-12
O vitamin
O riboflavin
????
Answer:
Vitamin A
Explanation:
Most people with vitamin A toxicity have a headache and rash. Consuming too much vitamin A over a long period of time can cause coarse hair, partial loss of hair (including the eyebrows), cracked lips, and dry, rough skin. Chronic consumption of large doses of vitamin A can cause liver damage.
Consuming too much vitamin A over a long period of time can cause coarse hair, partial loss of hair (including the eyebrows), cracked lips, and dry, rough skin. Chronic consumption of large doses of vitamin A can cause liver damage. It can also cause birth defects in a fetus. Later symptoms include severe headaches and general weakness. Bone and joint pain are common, especially among children. Fractures may occur easily, especially in older people. Children may lose their appetite and not grow and develop normally. Their skin may itch. The liver and spleen may enlarge.
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what are some drawbacks to using mice in genetic studies?
Answer:
One drawback to using transgenic, knock-in, and knock-out mice to study human diseases is that many disorders occur late in life, and when genes are altered to model such diseases, the mutations can profoundly affect development and cause early death.
hope this helps
Explanation:
Genetically altered mice have served to recapitulate human diseases, including cancer, glaucoma, heart disease, and diabetes. However, despite their genetic similarity to humans, mouse models are criticized for their failure to accurately mimic human disease phenotypes.
Why it's bad to use mice as an experiment:
The use of mice as model organisms to study human biology is predicated on the genetic and physiological similarities between the species. Mice are less reliable as models of human disease, however, because the networks linking genes to disease are likely to differ between the two species.
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give a scientific explanation of evolution
Explanation:
according to DARWIN'S theory, evolution is derived from the parent's philosophy. meaning, the parents are offspring from an animal that mated with an (updated) version of that species...
Mutations may be caused by A. errors in replication B. exposure to radiation C. breakage of chromosomes D. All answer choices are correct
Answer: D all answer choices are correct
Both plant and animal cells need to produce energy for cellular functions. In both types of cell, this function is carried out by which organelle?
Why is the element carbon so versatile?
Answer:
C.
Explanation: can form many different types of structures and it's stable
Explanation:
C ...................
What is cellular respiration?
Answer:
cellular respiration is the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.
Explanation:
The structure that regulates air pressure between the external atmosphere and the middle ear cavity is known as the:
Answer:auditory tube
Explanation
The structure that regulates air pressure between the external atmosphere and the middle ear cavity is known as the Eustachian tube.
What is the structure of Ear?The ear is a type of organ of hearing and balance which consists of a cavity in the skull structure lined with soft tissue. It surrounds three distinct spaces filled with air or fluid i.e. the outer, middle, and inner ear. These specialized spaces host both the sound transmission apparatus and the sensory apparatus.
Types of bones present in the ear are
1. Hammer shaped bone known as malleus which is attached to the eardrum.
2. Anvil shaped bone known as incus present in the middle of the chain of bones.
3. Stirrup shaped bone known as stapes is attached to the membrane-covered opening which connects the middle ear with the inner ear (oval window).
The cavity of the middle ear is a narrow air-filled space which is a slight constriction divides it into an upper and a lower chamber known as tympanic cavity proper below and the epitympanum above. The main function of the Eustachian tube is to equalize the air pressure between the environment and the middle ear.
Thus, the structure that regulates air pressure between the external atmosphere and the middle ear cavity is known as the Eustachian tube.
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How might the interdependence of organisms in a specific habitat be
helped or harmed as a result of changes in the ecosystem over time?
Changes in an ecosystem may benefit one organism by removing predators while affecting the predator species negatively.
What is the effect of change in ecosystem over time on the interdependence of organisms in a specific habitat?Changes that occur in an ecosystem may occur as a result of natural or man-made causes.
Changes in an ecosystem may have positive or negative effects on the interdependence of organisms in a specific habitat.
For example in an aquatic habitat where certain species of fishes like sharks depends on smaller fishes like salmon to survive, if humans were to reduce the salmon population by overfishing, the sharks will be negatively affected as they may have to migrate to new hunting grounds.
However, some other fishes that are prey to shark may be able to grow more with the reduction on shark population in that area.
Therefore, changes in an ecosystem may benefit one organism by removing predators while affecting the predator species negatively.
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The left cerebral hemisphere controls the muscles on the right side of the body and vice versa. Which pathway generalization best explains this phenomenon
Given our understanding of neuroanatomy, we can confirm that the left cerebral hemisphere controls the muscles on the right side of the body and vice versa due to the motor decussate of the cortical spinal pathway.
A decussate in regards to the nervous system is described as when the nerve fibers cross from one side of the central nervous system to the other. The decussate in question corresponds to the cortical spinal motor decussate.
The cortical spinal pathway is the nerve pathway that is in charge of muscular control and therefore is the pathway that is responsible for the phenomenon described in the question.
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Why do you share similar traits with your parents?
Answer:
C- You inherited DNA from each parent
Explanation:
Answer:
you inherited DNA from your parents :D