Answer:
Fossil fuels can't be reused or replaced.
Explanation:
How many different versions of a gene are carried in a single normal cell?
If two populations of people share the same DNA "spelling difference" (i.E., mutation), what does this mean about these two populations?
Answer:
It could mean that those two populations could be common ancestors because the spelling differences are the same
Explanation:
The similar spelling variations between the two populations could imply that they share common ancestry.
What is DNA?Deoxyribonucleic acid, or DNA, is the name given to the genetic material carried by humans and nearly all other species. An individual's DNA is present in nearly all of their cells.
Nucleotides are the molecular building components that make up DNA. A phosphate group, a sugar group, and one of four different nitrogen bases make up these building components. Nucleotides are joined into chains and the locations of the phosphate and sugar groups are switched to form DNA strands.
Every cell in the body has DNA in its nucleus. Groups of these firmly bound fragments make form chromosomes. The majority of people possess 46 pairs of chromosomes, or 23 pairs per pair.
Thus, The similar spelling variations between the two populations.
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ten effects of unsuitable work place environment to human health
What is nuclear energy?
A. the energy released in nuclear reactions
B. the energy it takes to bond elements to form compounds
C. the energy holding the particles in a nucleus together
D. the energy that causes the water in a pot on the stove to boil and form steam
Answer:
C
Explanation:
Nuclear energy is the energy in the nucleus, or core, of an atom. Atoms are tiny units that make up all matter in the universe, and energy is what holds the nucleus together. There is a huge amount of energy in an atom's dense nucleus.
A student conducted an experiment with two rose plants to determine if a liquid formula for fertilizer produced greater growth than a dry formula. After testing each fertilizer on two different plants for one month, his data led to the conclusion that the liquid formula was a better promoter of plant growth. When he described his conclusion to his teacher, she told him he needed to conduct additional trials. The teacher most likely asked for additional trials because O she did not believe the new formula helped plants grow better than the old formula. O it was necessary to see data from more plants before the conclusion could be accepted. O it was necessary to have tested the fertilizer on different kinds of plants. O she thought he should test additional fertilizer formulas on the same two plants.
Answer:
O it was necessary to see data from more plants before the conclusion could be accepted.
Explanation:
science trials typically have to be done at least 3 times
Answer:
B
Explanation:
EDGE2020
Every ____ has a specific _____
• cell membrane
• function
• cell wall
• chloroplast
• mitochondria
• nucleus
• cytoplasm
• organelle
Answer:
Every organelle has a specific function
my claim is I think we need to change the grouping penguins of Gentoo and Adelie. i just need evidence and reasoning, this is SCIENCE hurry
Answer:
Emperor penguins are likely to pair with different mates the next breeding season; only about 15 percent pair with the same mate the following year. Adelie penguins, meanwhile always breed with the same mate as long as they both return to the same nesting ground.
Creation of marine reserves to protect Adélie penguin food sources and foraging areas.
Explanation:
Leading and lagging DNA strands exist at a replication fork because ___________.A. the DNA polymerase can add new nucleotides onto either the 3' end or the 5' end B. the two strands of DNA are antiparallel, and DNA polymerase can only add new nucleotides onto a 5' end C. the two strands of DNA are parallel and DNA polymerase can only add new nucleotides onto a 3' D. end the two strands of DNA can be either parallel or antiparallel the two strands of DNA are antiparallel, and DNA polymerase can only add new nucleotides onto a 3' end
Answer:
B. the two strands of DNA are antiparallel, and DNA polymerase can only add new nucleotides onto a 5' end
Explanation:
Deoxyribonucleic acid, known as DNA, is the genetic material of a cell, which must first undergo replication i.e produce two identical copies of itself, before a cell can divide. During replication, the double stranded DNA unwinds into a replication fork consisting of two single strands of DNA.
These single strands of DNA are called leading strand (runs from 3'-5') and lagging strand (runs from 5'-3'). These single strands that runs at opposite direction from one another exists at the replication fork because the two strands of DNA are antiparallel i.e. are opposite to one another, and DNA polymerase can only add new nucleotides onto a 5' end.
Leading and lagging DNA strands exist at a replication fork because the two strands of DNA are antiparallel, and DNA polymerase can only add new nucleotides onto a 5 'end.
A replication fork is the juncture between two strands of DNA when it is replicating itself.
In each of them (speaking of the homologous strands) the opposite chain is carried out to have the double genetic information when approaching cell division.
The direction in which the enzymes act is unique from 5 'to 3', this determines the template chain must have the direction 3'→ 5', so that the new chain in formation, complementary and antiparallel, has the direction 5 '→ 3' coinciding with the enzyme's working system.The basic reaction that takes place in replication is a polymerization reaction, in a growing DNA chain a nucleotide is incorporated whose base is complementary to that of the template chain.The DNA polymerases at the two ends of the free nucleotide to be incorporated use its phosphate group or 5 'end to add it to the growing chain.Therefore, we can conclude that leading and lagging DNA strands exist at a replication fork because the two strands of DNA are antiparallel, and DNA polymerase can only add new nucleotides onto a 5 'end.
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help? plz mark brainliest?!
Answer:
Darwin
Explanation:
He was a scientist who was all about evolution (change over time)
please help!
Factors that include precipitation, temperature, climate, sunlight are all examples of _______ factors
A) biotic
B)abiotic
C)biological
D)ecological
Answer: the answer is b, abiotic
Explanation: Abiotic factors are the non-living parts of the environment that can often have a major influence on living organisms and Abiotic factors include water, sunlight, oxygen, soil and temperature.
Answer: D
Explanation:
HELP PLEASE!
Life Science:
Why does Nitrogen have to be continually converted into other compounds in the Nitrogen Cycle?
Answer:
because we can breath the nitrogen otherwise we can die
The Texas blind salamander (Eurycea rathbunl) lives in the Edwards Aquifer region around San Marcos. Along with other species the salamander lives in total darkness in the underground crevices and caves of the aquifer region. The table lists some of the organisms that live in this environment and their food sources. Edwards Aquifer Cave Inhabitants Food Sources Texas blind salamander Blind shrimp Snails Amphipods Intestinal roundworm Blind shrimp, amphipods Protozoa, fungl, detritus Detritus Detritus. Texas blind salamander In an energy pyramid for these aquifer cave dwellers, which of the following would be placed at the bottom? A Snails C Protozoa B D Texas blind salamanders Blind shrimp
Answer:
The answer is Protozoa
Explanation:
Which species has the MOST RECENT common ancestor with the ROBIN?
Hagfish
(outgroup)
Salmon
Jaws
Frog
Keratinous
scales
Lizard
Lungs:
Four limbs
Alligator
D
Gizzard
Feathers
Claws
Robin
or nails
G
Rat
Fur;
Mammary
Glands
Gorilla
Time
O Lizard
O Salmon
O Gorilla
give a reason why eggs shell is porous
Answer:
if it's porous it must absorb stuff
Explanation:
like a napkin
Answer:
Explanation:Directly under the chicken egg's shell are two membranes. When the eggs are laid by the mother they are warmer than the air, and as they cool the material inside the egg shrinks a little bit. ... The tiny pores in the shell allow the carbon dioxide to escape and fresh air to get in.
In a watershed, why would the water be cleaner near the top where it just rained as oppose to the bottom where the water collected?
Answer:
Because the Pollution and oil from streets and dirt, etc... on land would be washed down to or brought to the low collection point of the watershed therefor the fresh rain would be cleaner than the collection of polluted dirty water
Explanation:
Down syndrome is a common genetic disorder that is caused by having an extra copy of chromosome 21. Which method will show whether or not a baby has down syndrome?
a. Karyotype
b. Family history
c. Genetic survey
d. Punnett square
Answer:
a. Karyotype
Explanation:
Karyotypes describe the chromosome count of an organism, so all the chromosomes would be in front of you, and it'd be easy to tell if there are 2 or 3 chromosome 21.
Bees play a central role in the health of terrestrial ecosystems because they are vital
to the pollination of plants. The extinction of bees could cause the collapse of plant-
based terrestrial (land) ecosystems. Based on this description, bees can best be
described as a
A.native species
B.foundation species
C.keystone species
D.specialist species
Answer:
C
Explanation:
Bee can be described as a key stone speices
The molecule is known as the universal energy source of the cell
Answer:
El ATP es la molécula universal que almacena y distribuye la energía a muchos procesos: fabricación de componentes celulares, transporte, transmisión de señales, etcétera.
Explanation:
Answer: ATP or Adenosine triphosphate
Explanation:
Select the correct answer.
Which of these is an example of selective breeding?
A.
A scientist places bacteria in a Petri dish treated with antibiotics and observes what happens to the population over time.
B.
A farmer plants tomato seeds that have been genetically modified to be pest resistant in his garden.
C.
A farmer only allows trees that produce tart apples to reproduce until he has a population that only produces tart apples.
D.
A scientist uses the genetic material from a unicellular organism to create an exact copy of that organism.
Answer:
the answer is C
Explanation:
Seletive breeding means only nuture one specific kind of species. In answer C, the farmer only allows trees produce tart apples to reproduce, so the answer is C.
Hope this will help❤️
You have been chosen to lead Brampton's first ever space mission. Referencing what you've learned about day to day living in space, identify 3 differences you will experience between daily routines in space, and daily routines on earth.
Answer:
Doing experiments, maintenance and cleaning.
Explanation:
Astronauts perform tasks of the day which is supervising experiments, performing routine maintenance on station equipment and the astronauts wipe the walls, floors, and windows to keep them clean in order to avoid any type of microbial growth. Most of the activities are similar in space to the earth i.e. sleeping, eating the meal three times a day and exercise to maintain health and become active all the day.
Which statement best describes the pioneer organisms involved
in ecological succession?
Select one:
Pioneer organisms are restricted to desert biomes.
Pioneer organisms do not require sunlight.
Pioneer organisms are the last organisms to appear.
Pioneer organisms modify the environment.
Answer: Pioneer organisms modify the environment.
The statement that best describes the involvement of pioneer organisms in ecological succession is as follows:
Pioneer organisms modify the environment.Thus, the correct option for this question is D.
What is Ecological succession?Ecological succession may be defined as the gradual and continuous replacement of one community by another community over a long period of time.
Pioneer organisms are those organisms that arrive first in any ecosystem which is bare. The pioneer species are always found to be present in the bare area. The organisms that are the last organisms to appear known as climax organisms.
Pioneer organisms modify the environment in such a way that makes the bare atmosphere a little bit improved with respect to the need of other organisms.
Therefore, the correct option for this question is D.
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I am made of many cells, which makes me __________. I make my own food through a process called photosynthesis. This makes me a__________.
Answer:
multicellular
Explanation:
plant cell
Answer:
I am made of many cells, which makes me multicellular. I make my own food through a process called photosynthesis. This makes me a(n) plant/ autotroph .
Explanation:
plz answer this question what is it
Answer:
option(D) is right answer
Explanation:
because human takes oxygen and plants take carbon dioxide
Answer:
well, what we can do here is eliminate what we know. It's not A, because ALL living organisms reproduce. (examples include humans, cows, plants, etc.) for now, until we see the other answers, we will skip b. It can't be C, because on a trusted website, it states that the unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells. Rudolf Virchow later made important contributions to this theory. ... All organisms are made up of one or more cells.
If we take a look at D, It could be true because in another trusted website, it states that Oxygen helps organisms grow, reproduce, and turn food into energy. ... Although other animals may use different organs to breathe with, they all get oxygen into their bodies through respiration. So, Looking back up to B, it seems less likely now that we've viewed everything. D is the answer, I wasn't paying attention earlier, haha.
Hope this helps! brainliest is appreciated :)As you become an adult, the cells in your body
1 keep dividing
2 stop dividing
3 stop changing
4 can't repair themselves
could someone answer 3, 4 and 5 for me please? i’ll give you brainliest answer or whatever :).
Answer:
2. In the natural environment, plants produce their own food to survive. As with photosynthesis, plants get oxygen from the air through the stomata. Respiration takes place in the mitochondria of the cell in the presence of oxygen, which is called "aerobic respiration".
3. Both cellular respiration and fermentation are process that break down food and convert the chemical energy stored in the food to ATP molecules. Both these processes begin with glycolysis and convert glucose to pyruvate. ... Fermentation only uses the latter.
4. Energy is usually absorbed during photosynthesis.
Photosynthesis is the process whereby green plants manufacture their food in the presence of sunlight(energy source), water and carbon dioxide:
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
↑
Sunlight
Sunlight supplies solar energy that is used to converted the chemical species into glucose that stores chemical energy.
Respiration is the reverse of photosynthesis. In this reaction, oxygen gas combines with glucose to produce energy with water and carbon dioxide as by products. The energy stored in photosynthesis is released during respiration.
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O ↑ energy
Explanation:
Answer:
2. The process of respiration in plants involves using the sugars produced during photosynthesis plus oxygen to produce energy for plant growth. As with photosynthesis, plants get oxygen from the air through the stomata.
3. Both cellular respiration and fermentation are process that break down food and convert the chemical energy stored in the food to ATP molecules.
4. Energy is usually absorbed during photosynthesis.
Photosynthesis is the process whereby green plants manufacture their food in the presence of sunlight(energy source), water and carbon dioxide:
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
↑
Sunlight
Sunlight supplies solar energy that is used to converted the chemical species into glucose that stores chemical energy.
Respiration is the reverse of photosynthesis. In this reaction, oxygen gas combines with glucose to produce energy with water and carbon dioxide as by products. The energy stored in photosynthesis is released during respiration.
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O ↑ energy
DESCRIBA EL CLIMA DESÉRTICO
This oceanic zone contains some of the
deepest parts of the ocean.
A. Kelp Forest
B. Abyssal Zone
C. Coral Reefs
The abyssal zone, which lies between 4,000 and 6,000 meters (13,000 and 20,000 feet) below the surface, is the deepest region of the ocean. So, option B is the answer.
The region of the ocean that lies beyond the continental shelf is commonly referred to as the oceanic zone. The sunshine zone, twilight zone, midnight zone, and abyssal zone are the four vertical zones that make up the open ocean.
Abyssal zone is characterized by high pressure, low temperatures, and very little light.
Kelp forest is found in shallower areas, often between 20 and 100 meters deep and Coral reefs are located in tropical, shallow waters.
Therefore, option B is correct.
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HELP PLEASE
Which of the following is a result of continental drift?
It causes climate change, which puts selective pressure on organisms.
It results in intentional introduction of invasive species, leading to competition.
It causes the buildup of atmospheric carbon, leading to climate change.
It results in habitat fragmentation, due to construction of new buildings.
If an organism has a vestigial structure, that structure likely once had a function in a(n)
Answer:
Early Ancestor
Hell p please
Directions: Explain where each part of the directional terms are
located:
A. Body planes
1. Sagittal
2. Mid-sagittal
3. Coronal/frontal
4. Transverse/horizontal
B. Directional terms
1. Superior
2. Inferior
3. Anterior
4. Ventral
5. Posterior
6. Dorsal
7. Medial
8. Lateral
9. Proximal
10. Distal
11. Superficial
12. Deep
C. Body cavities
1. Dorsal
2. Cranial
3. Spinal
4. Thoracic
5. Abdominal
6. Pelvic
D. Quadrants
1. Right upper quadrant (RUQ)
2. Left upper quadrant (LUQ)
3. Right lower quadrant (RLQ)
4. Left lower quadrant (LLQ)
Answer:
A. Body planes
1. Sagittal: cut along the lengthwise plane of the body. divides left and right parts.
2. Mid-sagittal: cut exactly down the median. divides left and right parts equally. (would cut vertically down the nose)
3. Coronal/frontal: divides the body into anterior and posterior parts
4. Transverse/horizontal:cut along the lengthwise plane. divides anterior and posterior. (coronal section)
B. Directional terms
1. Superior: toward the head end or upper part of a body structure. above. (AKA cranial or cephalad) The face is superior to the neck.
2. Inferior: away from the head end or toward the lower part of a structure or the body. (AKA caudal) The navel is inferior to the chin.
3. Anterior: toward or at the front of the body. (AKA ventral). The windpipe (trachea) is anterior to the esophagus.
5. Posterior: toward or at the backside of the body. (AKA dorsal). The heart is posterior to the sternum.
7. Medial: toward or at the midline of the body. The bridge of the nose is medial to the eyes.
8. Lateral:away from the midline of the body. The eyes are lateral to the nose.
9. Proximal: close to the origin of the body part or point of attachment of a limb.
10. Distal: farther from the origin of a body part or the point of attachment of a limb. the foot is distal to the knee.
11. Superficial: toward or at the body surface. (AKA external). The skin is superficial to the muscles.
12. Deep:away from the body surface (AKA internal). The intestines are deep to the spine.
C. Body cavities
1. Dorsal: consists of two subdivisions which are continuous with each other: cranial cavity and spinal cavity
2. Cranial: space inside the skull
3. Spinal: extends from cranial cavity almost to the end of the vertebral column. protected by the vertebrae
4. Thoracic: separated from rest of ventral cavity by the diaphragm. contain heart, lungs, etc that are protected by the rib cage
5. Abdominal: contains stomach, liver, intestines, etc
6. Pelvic: contains reproductive organs, bladder, and rectum
D. Quadrants :
1. Right upper quadrant (RUQ): Lobe of the liver is located and gallbladder. contains liver, gallbladder, small and large intestines
2. Left upper quadrant (LUQ): Main portion of the stomach. contains stomach, pancreas, spleen, small and large intestines
3. Right lower quadrant (RLQ): The Cecum, appendix, and part of the small intestine are located. contains small and large intestines, appendix, female ovary and uterus, bladder.
4. Left lower quadrant (LLQ): Descending colon. Contains small and large intestines, female ovary and uterus, bladder