Oxygen is the heart of the lungs
a.
F. The spindle is
the DNA found in the nucleolus.
b. a circular shaped bacterial chromosome.
joined strands of duplicated genetic material.
d. the centrioles and the microtubules they secrete.
C.
Answer:
C
Explanation:
state one way of monitoring the activity of the heart
A cardiac event monitor
how long does it take for a photon to travel through the convection zone
Answer:
50 million years
Explanation:
It can take a photon as long as 50 million years to travel all the way through the radiative zone. The convection zone surrounds the radiative zone. In the convection zone, hot material from near the Sun's center rises, cools at the surface, and then plunges back downward to receive more heat from the radiative zone.
Cell membranes are made up of a bilayer of phospholipids that are very selective about what substances can pass through.The table below shows the different types of molecules that can enter a cell. It compares the concentration on the outside to the inside of the cell, its relative size, and whether it is polar, nonpolar, or an ion. Determine how each molecule can pass into the cell. Is it by passive transport, active transport, or endocytosis? (3 points)
Answer:
Answer: Oxygen = passive Carbon Dioxide = passive Fructose = Endosytosis glutamine = Active Sodium ion = Active Potassium ion = Active Protein molecule = Passive or Endocytosis
Explanation:
js trynna get points lol
The molecules can pass into the cell by passive transport, active transport, or endocytosis.
Molecule | Concentration Outside | Concentration Inside | Size | Polarity | Transport | Mechanism
Glucose High Low Small Polar Diffusion
Oxygen High Low Small Nonpolar Diffusion
Sodium High Low Small Ion Active transport
Chloride Low High Small Ion Active transport
Amino acids Low High Medium Polar Carrier-mediated transport
Large protein Low High Large Polar Endocytosis
Glucose and oxygen can pass into the cell by diffusion. Diffusion is the movement of molecules from an area of high concentration to an area of low concentration. Glucose and oxygen are both small molecules, and they are both polar. This means that they can dissolve in the phospholipid bilayer of the cell membrane.
Sodium and chloride can pass into the cell by active transport. Active transport is the movement of molecules from an area of low concentration to an area of high concentration. Sodium and chloride are both ions, which means that they are charged particles. This means that they cannot dissolve in the phospholipid bilayer of the cell membrane. Instead, they need to be transported across the membrane by special proteins called ion pumps.
Amino acids can pass into the cell by carrier-mediated transport. Carrier-mediated transport is a type of passive transport that uses carrier proteins to transport molecules across the cell membrane. Amino acids are polar molecules, but they are larger than glucose and oxygen. This means that they cannot simply diffuse across the cell membrane. Instead, they need to be transported across the membrane by carrier proteins.
Large protein can pass into the cell by endocytosis. Endocytosis is a process by which the cell engulfs large molecules or particles. The cell membrane forms a pocket around the molecule or particle, and then the pocket pinches off to form an endocytic vesicle. The endocytic vesicle then fuses with a lysosome, where the molecule or particle is broken down.
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Which letter in Figure 1 represents meiosis? Why?
Which letter in Figure 1 represents mitosis? Why?
The letter D in Figure 1 represents meiosis, while letter A represents mitosis. Meiosis is a reductional cell division.
Mitosis is a type of cell division where a parent cell divides to produce two genetically identical daughter cells (in this case, diploid cells).
Meiosis is a reductional cell division where a parent cell divides twice to produce four daughter cells having half of the genetic material.
Meiosis occurs in germinal cells, while mitosis occurs in somatic (body) cells.
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Answer the following question number 13 for 20 point
Answer:
All i could fine is metamorphic rocks
Explanation:
Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors. Conditions like these are found deep within the Earth or where tectonic plates meet.
Hoped that helped:P
Answer:
D, or hornfels.
Explanation:
Hornfels is a metamorphic rock formed by the contact between mudstone / shale, or other clay-rich rock, and a hot igneous body, and represents a heat-altered equivalent of the original rock. This process is termed contact metamorphism. It's not like animal metamorphism.
How did the bombardment of Earth by solid particles affect its temperature
Answer:it affected it by being hot
Explanation:
snglekns
The bombardment of the earth by solid particles affects its temperature because the bombardments release heat and make the earth warmer, and due to this, the early earth was hotter.
What is the earth?The Earth is the planet in the solar system that moves around the sun, and it has living plants and animals along with non-living substances such as soil, air, water, etc. Most of the earth is covered with water and the earth has various populations, biomes, and biodiversities, and all of this biodiversity is due to changes in climate and geography, which result in the presence of various animals.
Hence, the bombardment of the earth by solid particles affects its temperature because the bombardments release heat and make the earth warmer, and due to this, the early earth was hotter.
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Which of the following statements is true about the role of water in cellular respiration?
Answer:
The correct answer is " It is one of the ending compounds."
Have a good day!
Explanation:
Which of the following is NOT a function of cardiovascular system?
A: moving white blood cells to infection sites.
B: moving oxygen throughout the body.
C: building immunity towards diseases.
D: transporting nutrients throughout the body.
Answer:
c.building immunity towards diseases
Please help
4.___are essentially molecules of DNA.
The ____theory accounts for the method by which a molecule of DNA makes a
copy of itself.
Answer:
Nucleotide
DNA replication
Explanation:
The limb of an alligator, when compared to that of a dog supports which type
of evidence of evolution?
A.embryology
B.fossil record
C.homologous stucture,
D.geographic distribution.
No links or bots please and thank you
help me pls ASAP it's need
Answer:
slash and burn methods results in soil erosion due to the fact that it causes landslides, dust clouds and contaminated water. Soil washes away during rain and trees are no longer supported by the soil holding their roots in place
Do you think there should be regulations on industries that make fertilizers and farmers who use fertilizers to ensure that excess nitrogen does not reach water ecosystems? Why or Why not? Write at least five sentences defending your answer.
Given what we know, we can confirm that there should in fact be regulations on fertilizer manufacturers and farmers who use fertilizers to ensure that excess nitrogen does not reach water ecosystems due to its negative effects on the ecosystems.
What is Nitrogen?Nitrogen is an element that is most often found in a gaseous state.It is color and odorless.It is found in the air, water, and almost everywhere else around us, but in low quantities. It can form toxic gases such as ammonia when in high concentrations in the air. Why can it be harmful in excess?Excess nitrogen in water is very bad due to the effect on algae. Contrary to what we may initially believe, excess nitrogen can help algae to grow at very high rates.However, these algae blooms sap the oxygen from the water at increased rates and damage if not kill all other marine life in the area as a consequence.Therefore, regulations should be in place for fertilizer manufacturers and farmers who use fertilizers to ensure that excess nitrogen does not reach water ecosystems due to its negative effects on the ecosystems.
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Which statement is true about the law of reflection?
The angle of reflected light is the same as the incoming angle of light.
The angle of reflected light distorts the image to appear larger or smaller.
The angle of reflected light is smaller than the incoming angle of light.
The angle of reflected light is larger than the incoming angle of light
Answer:
The law of reflection defines that upon reflection from a smooth surface, the angle of the reflected ray is equal to the angle of the incident ray, with respect to the normal to the surface that is to a line perpendicular to the surface at the point of contact.
The reflected ray is always in the plane defined by the incident ray and the normal to the surface at the point of contact of the incident ray.
The images produced by plane mirrors and curved mirrors can be understood by the law of reflection.
Law of reflection is defined as:
The principle when the light rays falls on the smooth surface, the angle of reflection is equal to the angle of incidence, also the incident ray, the reflected ray, and the normal to the surface all lie in the same plane.
What is Reflection of Light?
The process through which light rays fall on the surface and gets bounced back is known as a reflection of light.
Explanation:
Answer: The angle of reflected light is the same as the incoming angle of light.
Explanation:
The law of reflection states that the incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane. The angle of reflection is equal to the angle of incidence.
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Answer:
lol XD
Explanation:
Bob has brown hair and Sally has blonde hair. If brown hair is dominant and blonde hair is recessive, is it possible for Bob and Sally to have a blonde-haired child? Use the GENOTYPE of each parent to EXPLAIN your answer.
Answer:
no it is not possible
Explanation:
bc when you do a punnett square brown hair is dominant so there is not a possible way for their child to have blonde.
why are peas carbohydrates
Explanation:
Hope this helps you !!a cell makes and secretes a certain protein. explain where it is made, how it is secreted from the cell and what kind of transport is used
. . . . . . .. . . . .. . . . . . . . . . . . . .. ..
Hope this helps
what is the process that breaks down nucleic acids into nucleotides
a. dehydration synthesis
b. synthesis
c. polymerization
d. hydrolysis
please help ty
Answer:
D. Hydrolysis
Explanation:
Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case.
I hope this helps have a great day :)
The process that breaks down nucleic acids into nucleotides is hydrolysis. The correct option is d.
What is hydrolysis?Any chemical reaction in which a water molecule breaks one or more chemical bonds is known as hydrolysis.
When water is the nucleophile, the phrase is used generically to refer to substitution, elimination, and solvation processes.
Nucleo depolymerase is another name for nuclease. By cleaving the phosphodiester bond that connects the nucleotides in the nucleic acids, the nucleic acid is broken down into nucleotides.
Either an enzyme or a non-enzyme can cleave the nucleic acid chain. Since the initial step in the alkaline hydrolysis of a polynucleotide is the transfer of the bond from C5' of the subsequent nucleotide to C2' of the same nucleotide, a 2'-OH group is necessary.
Thus, the correct option is d.
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Which of the following statements is correct about pollination?
Answer:
B should be correct
Explanation:
Pollen from an anther drops or rubs off on a pollinater. The pollinator then moves/takes it to another flower and it goes on the stigma of a flower.
Can someone please help me with the next 15-20 questions that I'm about to upload today? they're all due today and it's for physical science 11th grade
Answer:
yes
Explanation:
I can help. As long as it's before 9
Pharmacodynamic tolerance involves changes in _____________ while metabolic tolerance involves changes in _____________. Group of answer choices A. enzymes / neurons B. neurons / enzymes C. brain / neuron D. neuron / brain
Answer:
B
Explanation:
Pharmacodynamic tolerance involves changes in neurons, while metabolic tolerance involves changes in enzymes.
What is pharmacodynamics?
"Pharmacodynamic interactions" are interactions in which substances directly affect one another's effects. Sedatives, for instance, typically potentiate one another.
Neurons are the cells of the nervous system the cell plants are branch-like structures like the roots of a plant, they contain absorb information using electrical impulses and transport it into different areas of the brain.
The central nervous system contains the brain and the hypothalamus, and the peripheral nervous system contains all the neuron cells.
Therefore, while metabolic tolerance affects changes in enzymes, pharmacodynamic tolerance involves changes in neurons.
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Rewrite the following equation in slope-intercept for. 6x - 4y = -5
Answer:
y = 3/2x + 5/4
Explanation:
Y = mx + b. DONE.
Sally sustained damage to some autonomic ganglia. What part of the visceral reflex arc is interrupted
The part of the visceral reflex arc that is interrupted is the motor response in a target cell. The visceral reflex is part of the autonomic nervous system (ANS).
The visceral reflex arc refers to the reflex arc present in the autonomic nervous system (ANS).
This reflex arc (visceral reflex) generates glandular muscular (motor) responses within internal organs.
The visceral nervous system controls different body functions including, among others, digestion, respiratory rate, heart, pupillary dilation, etc.
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Which of the following is surrounded by two phospholipid bilayers?
a) Ribosomes b) the vesicles
C. CYTOPLASM
D) THE NUCLEOPL
Answer:
D. THE NUCLEOPLASM.
Explanation:
I think there is a typo in your option but that's fine! I understand.
Is a mountain building explained by plate tectonics
Answer:
Yes. So are earthquakes and volcanoes.
Explanation:
Answer: No, I don't think so.
Explanation:
What is the function of tRNA?
A.catalyze the assembly of amino acids into a protein
B.carry genetic instructions for building a protein
C.bring an amino acid to the ribosome
Answer:
decode a messenger RNA (mRNA) sequence into a protein
Explanation:
tRNAs function at specific sites in the ribosome during translation, which is a process that synthesizes a protein from an mRNA molecule.
100 POINTS PLEEEEEEEEEEEEEEEAAAAAAAAAAASSSSSSSEEE
Answer:
claim: muscles
Evidence: usable energy
Reasoning: your breathing increases
Explanation:
Answer:claim: musclesEvidence: usable energy Reasoning: your breathing increases
Explanation:
Which of the following is an example of a positive feedback?
a. when your body is cold and triggers shivering to warm your body up
b. insulin's reducing blood sugar
c. withdrawing your hand from a painful stimulus, like a broken glass
d. the formation of a platelet plug during blood clotting
Answer:
C
Explanation:
that's the only one that seems reasonable. and (positive)
New cells are created from ______ ______.
Explanation:
New cells are created from existing cells through a process referred to as the cell cycle