Guys please help me this is my second time asking the same thinggg pls
How are coastal ecosystems a major source of oxygen for the rest of Earths waters?
Answers
Answer:
The ocean produces oxygen through the plants (phytoplankton, kelp, and algal plankton) that live in it.
Explanation:
These plants produce oxygen as a byproduct of photosynthesis, a process which converts carbon dioxide and sunlight into sugars the organism can use for energy. (hope this helps <3)
Related Questions
If a cell crossed over one time during Prophase I of Meiosis, how
many genetically distinct gametes would be produced?
Answers
Answer:
If crossing over doesn’t occur, then 2 out of the 4 daughter cells would be identical.
We have 46 chromosomes and are diploid meaning we got 1 set (23 chromosomes) from our mom and 1 set (23 chromosomes) from our dad.
In prophase 1, homologous chromosomes associate (chromosome #1 from dad and chromosome #1 from mom. They both code for the same things, but they are NOT identical)
Let’s compare mitosis to meiosis
On the left, see how in mitosis all chromosomes (even homologous) line up in single file (imagine all 46 lining up individually). When anaphase splits the sister chromatids (which are identical) in mitosis, each daughter cell gets the exact same genetic info.
(they get both homologous chromosomes: 1 from dad (yellow)and 1 from mom (purple) resulting in a full diploid set)
On the right in meiosis, see how the homologous chromosomes associate and will split? Chromosome #1 from mom (purple) is going to the left daughter cell while chromosome #1 from dad (yellow) is going to the right daughter cell. This means the two daughter cells will only have 1 set for chromosome #1 (either moms or dads but NOT both) and become haploid (1 set of 23 chromosomes)
Again in mitosis, all 46 lined up individually, but in meiosis the 23 from mom and 23 from dad first associate and each orient to decide which daughter cell gets the dads chromosome or the moms chromosome. They assort independently meaning just because dads chromosome #1 went to the left DOESN’T mean that dads chromosome #2 or #3 will go to the left. This gives a unique pattern of 23 chromosomes for the 2 daughter cells of meiosis 1 (a various mixture of moms and dads, but it is possible to result in a daughter cell with just moms and just dads set, though this would be a very small probability like 1 in 2^23 )
So each daughter cell of meiosis 1 is a haploid set (only 1 set instead of 2) and the opposite of the other (since 1 has fathers while the other has mothers for the same chromosome)
Meiosis 2 is just like mitosis. Here the sister chromatids separate producing 2 identical daughter cells
(identical if crossing over doesn’t occur. Crossing over only occurs on adjacent homologous chromatids)
If crossing over doesn’t occur then both sister chromatids are identical so that 2 out of 4 daughter cells will be exactly identical haploid sets. The other 2 are identical to each other as well.
Explanation:
Answer:
please give me brainlist and follow
Explanation:
Mitosis creates two identical daughter cells that each contain the same number of chromosomes as their parent cell. In contrast, meiosis gives rise to four unique daughter cells, each of which has half the number of chromosomes as the parent cell.
sorry .it's half answer
What was the Court’s decision in United States v. Nixon (1974) and how did the decision uphold the idea that even the President of the United States is not above the nation’s laws?
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Answer:
The Supreme Court decided that the President was required to turn over tape recordings and other materials that had been subpoenaed by special prosecutor Leon Jaworski.
In trying to withhold some materials related to the Watergate investigation, Nixon's lawyer had argued that the President of the United States "is not subject to the processes of any court in the land except the court of impeachment." The Supreme Court disagreed, in unanimous fashion. They held that the President could not use executive privilege as an excuse for hiding wrongdoing or avoiding prosecution. In an interview some years after his resignation, Nixon still held to his view, claiming that when the President does something, "that means that it is not illegal." He felt that being in the position of President put him above the law. But the Supreme Court had firmly disagreed. They rejected the idea of "absolute, unqualified Presidential privilege of immunity from judicial process under all circumstances." Executive privilege can only protect matters of military or diplomatic confidentiality
Someone please help me with this question
Answers
the appearance changes but the identity does not
where do daughter cells come from
Answers
Explanation:
Daughter cells are cells that result from the division of a single parent cell. They are produced by the division processes of mitosis and meiosis. Cell division is the reproductive mechanism whereby living organisms grow, develop, and produce offspring.
a daughter cell that just got created via mitosis is most likely in what stage?
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in an otherwise normal cell, what happens if one mistake is made during dna replication?
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Answer:
Most mistakes are corrected, and if they are not, they may result in a mutation, defined as a permanent change in the DNA sequence. Mutations can be of many types, such as substitution, deletion, insertion, and trinucleotide repeat expansions. Mutations in repair genes may lead to serious consequences such as cancer.
Explanation:
which organ system is responsible for protection against injury, infection, and dehydration?
Answers
Answer:
The integumentary system protects the body's internal living tissues and organs, protects against invasion by infectious organism, and protects the.body from dehydration.
Explanation:
double-stranded dna looks like a ladder that has been twisted into a helix, or spiral. the side supports of the ladder are:
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how is carbon dioxide produced in a cenent plant
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during which checkpoint would damaged or improperly replicated dna halt progression through the cell cycle?
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Answer:
G2/Growth 2 phase
Answer:
When a cell's DNA is damaged, a sensor protein activates p53, which halts the cell cycle at the G 1start subscript, 1, end subscript checkpoint by triggering production of a cell-cycle inhibitor. This pause buys time for DNA repair, which also depends on p53, whose second job is to activate DNA repair enzymes.
Which muscle looks like a saw blade along the rib cage?
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Answer: Serratus anterior muscle.
Explanation:
15. Which muscle is anterior to the tibia and helps prevent foot drop?
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Answer: Anterior Tibialis muscle
Explanation:
which is true of the anterior horns of the spinal cord?
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Answer:
They house cell bodies of somatic motor neurons.
Explanation:
each anterior root and corresponding posterior root unite within the intervertebral foramen to become a spinal nerve
If predators A and B prey upon the same species and predator A is eliminated, the population of predator B will likely __________.
a.
be eliminated
b.
increase
c.
decrease
d.
remain the same
Please select the best answer from the choices provided
Answers
Answer:
b
Explanation:
since predator seems to have the upper hand the predator a will most likey not be able to have any prey causing the preadotors b to inrease
Answer:
It's B
Explanation:
heparin is a naturally occuring anticoagulant produced by
Answers
Heparin is a naturally occurring glycosaminoglycan produced in the body by basophils and mast cells
Which of the following describe ways septic tanks potentially contaminate drinking water?
I. Using septic tanks in rural areas
II. Rising sea levels near coastline septic tanks
III. Leaks from septic tanks into groundwater
I and II
II and III
I and III
I, II, and III
Answers
Answer:
lll and ll
Explanation:
Answer:
| and ||
Explanation:
Most of the reactions by which energy from carbohydrates is released for use by the cell take place within the?
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Answer:
Explanation:
The cellular process of releasing energy from food through a series of enzyme-controlled reactions is called respiration . Some of the energy released is used to produce ATP. Some of the energy released is lost as heat.
The release of energy from carbohydrates takes place within the
mitochondria.
The mitochondria is an organelle found within cells and it is regarded as
the power house of the cell. This is because energy is generated in it which
gives the cells power to perform its daily activities.
Energy generated from carbohydrate is usually in the form of ATP and it
involves series of reactions such as glycolysis, kreb cycle etc to ensure
adequate energy yield.
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how do potassium channels select the ion that can travel through the channel? group of answer choices membrane-spanning subunits concentration pore loop voltage
Answers
Answer: Potassium channels allow K+ ions to easily diffuse through their pores while effectively preventing smaller Na+ ions from permeation. ... This selection process occurs at the narrow selectivity filter that contains structurally identified K+ binding-sites
Explanation:
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How do differences between the peaks and valleys of the two graphs demonstrate interactions between these populations?
Answers
Answer:
peaks and valleys show population increase and decrease between 2 species or more.
Explanation:
the peaks and valleys are used to show predation hence if there is an increase in prey there will be an increase in the predators and if there is a decrease in prey there will be a decrease in predators therefore creating peaks and valleys in that graph hence demonstrating population interactions between the two species.
Motor commands are carried by __________ from the brain along the spinal cord.
Answers
Answer:
descending tracts
Explanation:
Answer:
Descending tracts
Explanation:
"The descending tract is the pathway that the motor neurons take to reach the lower motor neurons that provide the nervous tissue needed for muscle movement."
Hope this Helps
True or False: Exhalation is a passive process.
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Answer:
true
Explanation: edg
differentiate bw jellyfish and hydra
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Explanation:
The polyp form is found in the genus hydra, whereas the most typical form of Medusa is found in the group called sea jellies"(jellyfish).
ANSWER ASAP!
Discuss the unique properties of water. (Polar, Hydrogen bonds, Cohesion, Adhesion)
Answers
Answer:
Water has cohesive and adhesive properties.
Water molecules have strong cohesive forces due to their ability to form hydrogen bonds with one another. Cohesive forces are responsible for surface tension, the tendency of a liquid's surface to resist rupture when placed under tension or stress.
Adhesion and cohesion are important water properties that affects how water works everywhere, from plant leaves to your own body. ... Cohesion: Water is attracted to water, and Adhesion: Water is attracted to other substances.
Answer & Explanation:
The difference in electronegativity between oxygen and hydrogen atoms creates partial negative and positive charges, respectively, on the atoms.
Water molecules attract or are attracted to other polar molecules.
Molecules that do not dissolve in water are known as hydrophobic (water fearing) molecules.
Because of its extensive hydrogen bonding, water (H2O) is liquid over a far greater range of temperatures that would be expected for a molecule of its size. Water is also a good solvent for ionic compounds and many others because it readily forms hydrogen bonds with the solute.
Cohesion holds hydrogen bonds together to create surface tension on water.
Since water is attracted to other molecules, adhesive forces pull the water toward other molecules.
Water is transported in plants through both cohesive and adhesive forces; these forces pull water and the dissolved minerals from the roots to the leaves and other parts of the plant.
Key Terms:
hydrogen bonds: A weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.
adhesion: The ability of a substance to stick to an unlike substance; attraction between unlike molecules
cohesion: Various intermolecular forces that hold solids and liquids together; attraction between like molecules
hydrophilic: having an affinity for water; able to absorb, or be wetted by water
hydrophobic: lacking an affinity for water; unable to absorb, or be wetted by water
polarity: The intermolecular forces between the slightly positively-charged end of one molecule to the negative end of another or the same molecule.
why do most cells in the human body divide infrequently?
Answers
i think its its either C or D but i don't know correct me if I'm wrong.
A swimmer dives underwater and needs to swim a long distance while holding her breath. This prevents her body from getting oxygen.
What is most likely to occur in her cells so that glycolysis can continue to produce ATP?
a) cellular respiration
b) alcohol synthesis
c) lactic acid fermentation
d) alcohol fermentation
Answers
Answer:
C is the correct option.
Explanation:
Cells in the body continue to produce ATP in absence of oxygen.
Lactic acid fermentation is most likely to occur in the swimmer's cells so that the process of glycolysis can continue to produce ATP. Thus, the correct option is C.
What is Lactic acid fermentation?
Lactic acid fermentation is a metabolic process in which glucose or other six-carbon sugars are converted into cellular energy (ATP) and the metabolite lactic acid. It is an anaerobic fermentation reaction which occurs in some bacteria and animal cells, such as muscle cells and in absence of oxygen molecule.
Lactic acid fermentation happens in the skeletal muscles. In this process, pyruvate is converted to lactic acid by the lactate dehydrogenase enzyme when oxygen is inadequate. Fatigue is brought on by the formation of lactic acid which buildup in the muscles.
Therefore, the correct option is C.
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What is the biggest bird in the world?
Answers
Answer:
the biggest bird in the world is the Common ostrich
Explanation:
Brainliest ?
Use the information to answer the following question.
1. tRNA brings the correct amino acid specified by the mRNA codon
2. DNA is used as a template to create mRNA, which leaves the nucleus
3. Amino acids are bonded together to make a polypeptide (protein)
4. mRNA molecule binds to a ribosome
5. The ribosome releases both the mRNA molecule and the polypeptide (protein)
Which of the following demonstrates the correct sequence of events that occurs during protein synthesis?
A. 2, 4, 1, 3, 5
B .2, 4, 3, 5, 1
C. 1, 2, 3, 4, 5
D. 4, 2, 1, 5, 3
Answers
Answer:
The correct sequence of events that occurs during protein synthesis? A
Explanation:
2. DNA is used as a template to create mRNA, which leaves the nucleus
4. mRNA molecule binds to a ribosome
1. tRNA brings the correct amino acid specified by the mRNA codon
3. Amino acids are bonded together to make a polypeptide (protein)
5. The ribosome releases both the mRNA molecule and the polypeptide (protein)
During protein synthesis, all the machinery for synthesis occurs in a sequential manner and the first need is a DNA template, so the correct option is a.
What events occur during protein synthesis?Protein synthesis occurs in the ribosomal machinery and the process is called translation and starts after transcription.
DNA acts as a template for transcription and makes mRNA which translates into protein. mRNA act as a messenger for protein synthesis, this mRNA converts into protein with the help of ribosomal machinery.
In the process tRNA act as an adapter molecule adding an amino acid to the protein chain according to the codon on mRNA. In the last step protein and mRNA are released by the ribosome.
Therefore protein synthesis starts with DNA, hence option a is correct.
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1. Which of the following is NOT a stress which affects plant cellular reactions?
A. Drought stress
B. Heat stress
C. Nutrient stress
D. Salt stress
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Answer:
I believe the answer would be C. Nutrient stress. I hope this helps you! :)
what is the term that describes the deffusion of water through a selectivity permable membrane
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Answer:
Explanation:
If I don't give the Italians my third crowbar, will my pasta privileges be reviewed by an all knowing ferret?
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Answer:
no
Explanation:
Answer:
yes
Explanation:
the Italians will be furious!! You will have no pasta and the ferret will scratch your face. PLEASE GIVE THEM YOUR CROWBAR! I BEG YOU! YOU DON'T WANT TO SEE THE ITALIANS ANGRY