Which statement best explains why these cells have structural differences?
The cells have different functions.
The cells evolved in different organisms.
One of the cells is more primitive than the other cell.
One of the cells develops into the other type of cell.
Answers
Answer:
a
Explanation:
the red blood cells protect you’re healthy cells from bacteria and/or viruses
and the nerve cell sends signals to our muscles and/or brain
Related Questions
how does oxygen have a direct effect on sea urchins
Answers
Answer:
When the oxygen level is low in a Purple Sea Urchin, muscles associated with Aristotle's Lantern pump fluid through its body (through the canals). Carbon dioxide (waste/not good stuff) is released through the anus. The Purple Sea Urchin obtains oxygen through diffusion only (the diffusion of oxygen into the organism).
Explanation:
Brainliest please
Sea urchins breathe through their feet tubes because of nonavailability of lungs and gills in them. When the oxygen level is low at that time, the sea urchins pump fluids through their anus.
How are sea urchins able to survive sea ?Sea urchins are able to survive in sea because of the tiny hair called spines present on their body as water currents are created because of the hair and waste gets washed away with the water currents created.
When the carbon dioxide level gets increased in the sea at that time the skeletal structures of the marine animals are also affected.
The shells made up of calcium also gets affected because of the increasing acidity in the water. Carbon dioxide not so good is released through the anus and this totally affects the normal regulation of the creature.
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is algae is saprophytic plant
yes
no
Answers
Which level of organization is shown in the diagrarn?
organ
0 tissue
organ system
O cell
Answers
Answer:
A. organ
Explanation: that is a kidney which is a organ, composed of cells making a tissue. It can't be tissue or cell then, and organ systems are multiple organs working together. so it's organ
what type of circulatory system do earthworms have?
Answers
Answer:
a closed circulatory system.
Explanation:
an earthworm circulates blood exclusively through vessels.
Answer:
Closed circulatory system.
What is the name for the type of graph shown in the image below?
A) Bar graph
B) Box-and-whisker
C) Cumulative frequency
D) Stem-and-leaf
Answers
Answer:
box-and-whisker is the right answer i think
Answer:
box and whisker
Explanation:
B
How is aerobic cellular respiration different from fermentation?
Answers
Answer:
Aerobic respiration is a metabolic process that occurs in the presence of oxygen while fermentation is a catabolic process that occurs in the absence of oxygen.Explanation:
the organs protected by the thoracic cage include the
Answers
Answer:
....heart and lungs
Explanation:
The organs protected by the thoracic cage include the heart and lungs
17. What two headed muscle comes together with the soleus to attach to the heel?
Answers
The gastrocnemius muscle
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structure of the atmosphere: Beginning at the surface of the earth list in order the layers of the atmosphere
Answers
Answer:These layers are the troposphere, stratosphere, mesosphere and thermosphere.
Explanation:
Mitosis is the division of the cell nucleus and cytoplasm into two genetically identical daughter cells.
a. True
b. False
Answers
Answer: True.
i am pretty sure.
21. Three different processes are occurring in the drawing below. Name each process and describe it.
Answers
The three different processes that are occurring in the above drawing are:
1. Process A: Diffusion.
2. Process B: Facilitated diffusion.
3. Process C: Active transport.
Cell transport refers to the movement of ions, molecules, or substances across the cell membrane, either into or out of the cells of a living organism.
From the above diagram, the three (3) different processes that are occurring are:
1. Process A: Diffusion.
Diffusion refers to the movement of gas molecules from a region of high concentration (top) to a region of lower concentration (bottom) until an equilibrium is attained or reached.2. Process B: Facilitated diffusion.
Facilitated diffusion refers to the movement of substances or gas molecules across a cell membrane from a region of high concentration (top) to a region of lower concentration (bottom), especially through the help of transport protein.3. Process C: Active transport.
Active transport involves the movement of substances across the cell membrane from a region of lower concentration to a region of higher concentration, against a concentration gradient and in the presence of oxygen.Read more: https://brainly.com/question/18646362
what is the last structure of the air passageway in your lungs
Answers
Answer:
Bronchioles
Explanation:
You inhale through your nose and the air is filtered. It goes down the pharynx. It goes through the larynx. A "door" called the epiglottis opens during breathing. Then it enters the trachea. (windpipe) It goes through the bronchus. The tertiary bronchi branch into fine tubules called bronchioles, the last passageways for air. Air ends its pathway in the ________. (I bet you can guess because you're so smart!) They're surrounded by capillaries that connect the pulmonary arteries and veins. This enables the transfer of oxygen and carbon dioxide.
I hope this helped!!! Good luck on the test/quiz/project/homework/etc. you're working on! If you want I can give you a l!nk to the article I used. If not, it's fine too. Have a great day!
what happens before RNA polymerase begins to work
Answers
D. Nucleic acids attach to the bases in the DNA.
Explanation:
Transcription begins when an enzyme called RNA polymerase is added to the DNA template and begins a new chain a new chain to produce complementary RNA. During the RNA synthesis transcription takes place, then the cap and tail is added and then splicing occurs. RNA polymerase moves from the 3 'end to the template strand creating the RNA-DNA double helix or similar the base sequences. This makes a chain with each sugar by the set of bonds called phosphodiaster linkage. Then, the enzyme unwind the DNA and begins the synthesis of RNA. Therefore, D. Nucleic acids attach to the bases in the DNA.
Line is defined as a
a. a geometric shape that is open and moves from one point to another.
b. a slowly curving path along a plane.
C. a path through space.
d. The distance or area between around, above, below,and within objects.
Please select the best answer from the choices provided
Ο Α
ОВ
OD
Answers
Answer:
A is the answer
Explanation:
a line is a infinetly thin infinetly long straight line.
what is the approximate percentage of total fixed nitrogen attributed to human activities?
Answers
Of the annual global total of fixed nitrogen, human activities account for roughly 45%.
Nitrogen fixation is the global amount of nitrogen that gets assimilated by any living organism into another organic compound. The organic compound can be ammonia or nitrogen ions.
Of the total global annual nitrogen fixation, humans account for a great amount. The current estimation is that humans cause 45% of the nitrogen fixation annually. The leading causes of this high rate are the burning of fossil fuels and increased agricultural fertilizer use.
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the genetic material of the eukaryotic cell is stored inside which organelle
Answers
Where in your body do you think cell division is occurring?
Answers
Answer:
Everywhere except in gonad cellsExplanation:
Cell division by mitosis occurs in all human body cells except the gonads (sex cells). During mitosis, the DNA is exactly copied and a new daughter cell created with the same number of chromosomes as the parent cell, ie 46. In the sex cells, meiosis occurs where the DNA is halved and the daughter cell has only 23 chromosomes.
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And have an amazing day <3
Answer: in shoot and root tips
A rocket flies up into the air and returns back down to its exact spot. The displacement of the rocket is zero
true or false
Answers
Answer:
False ................
How do most terrestrial primary producers make their own food?
Answers
Answer:
Primary producers like plants make their own food by doing something called photosynthesis. ... Leaves of plants absorb light from the sun. Leaves of plants also absorb the air that people breathe out, called carbon dioxide. Leaves of plants also absorb water.
Explanation:
something called photosynthesis
In science, the term theory is applied only to ideas that are supported by a vast, diverse array of evidence. How is the term used in everyday life?
Answers
Answer:
It explains facts and allows people to make predictions.
Explanation:
In everyday life, the word theory often means an untested hunch, or a guess without supporting evidence. A theory not only explains known facts but also allows scientists to make predictions of what they should observe if a theory is true.
In science, the term theory is applied only to ideas that are supported by a vast, diverse array of evidence. The term is also used in everyday life based on personal beliefs which does not support any strong evidence.
What is scientific theory?In science, a theory is a term applied to a well-explanation of an aspect of the natural world on the basis of empirical evidence that has undergone rigorous testing and evaluation. The process involves collecting and analyzing data and observations and hypotheses are based on the data obtained which form the basis of scientific theory. Therefore, scientific theory is an explanation that has been verified by scientific researchers.
However, the term theory is casually used in everyday language without any scientific proof. For example, someone may say "I have a theory that the universe fake". This fact is casually spoken by a person which is not based on any scientific fact.
Scientific theories are based on evidence supported by rigorous testing, while everyday theories are based on personal beliefs without any strong evidence.
Therefore, the term theory is also used in everyday life, which is based only on a personal belief, and not only on any scientific fact.
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why are scientists obsessed with discovering water on mars ?
Answers
Answer:
Understanding the extent and situation of water on Mars is vital to assess the planet's potential for harboring life and for providing usable resources for future human exploration.
Explanation:
20 points
Cells are classified as prokaryote and eukaryote. If a cell has no nucleus
and no membrane bound organelles, as mitochondria and chloroplasts,
then it is classified as *
A.Eukaryote
B.Prokaryote
C.Endosymbiosis
D.both a and b
Answers
Answer:
B. Prokaryote
Explanation:
Because it does not have a well defined nucleus and bound organelles
Answer:
B
Explanation:
A prokaryotic cell is a simple, single-celled (unicellular) organism that lacks a nucleus, or any other membrane-bound organelle.In prokaryotes, the DNA (chromosome) is in contact with the cellular cytoplasm and is not in a housed membrane-bound nucleus. ... Throughout the course of evolution, organelles such as mitochondria and chloroplasts (a form of plastid) may have arisen from engulfed prokaryotes.
Which of the following statements are FALSE? A. Meiosis separates homologous chromosomes in a diploid cell to produce haploid daughter cells containing one copy of each type of chromosome. B. During prophase I, homologous chromosomes pair up and exchange DNA. C. During meiosis II, paired homologous chromosomes move up to the equator of the cell. D. During anaphase I, homologous chromosomes separate. E. In meiosis II, the sister chromatids of each chromosome separate. F. In meiosis I, ploidy is reduced. G. In meiosis II, ploidy is reduced. H. During anaphase I, sister chromatids separate.
Answers
The statements about meiosis that are false include the following:
C. During meiosis II, paired homologous chromosomes move up to the equator of the cell.
G. In meiosis II, ploidy is reduced.
H. During anaphase I, sister chromatids separate.
Meiosis can be defined as a type of cell division or duplication that occurs in all body cells found in living organisms, through which a single cell divides twice to produce four (4) haploid cells (gamete).
During cell division, deoxyribonucleic acid (DNA) must be replicated before meiosis can take place in any body cell found in living organisms.
Generally, the phases or steps that occur during meiosis include:
Prophase I.Metaphase I.Anaphase I.Telophase I.Prophase II.Metaphase II.Anaphase II.Telophase II.Furthermore, the statements about meiosis that are false include the following:
1. During meiosis II, paired homologous chromosomes move up to the equator of the cell.
The movement of paired homologous chromosomes to the equator of the cell takes place during prophase II.2. In meiosis II, ploidy is reduced.
Actually, it is meiosis I that reduces ploidy.3. During anaphase I, sister chromatids separate.
Sister chromatids are separated during anaphase II.Read more: https://brainly.com/question/12103012
Which two climates have very low levels of precipitation?
dry and polar
polar and highlands
highlands and temperate marine
temperate marine and temperate continental
Answers
Answer:
arid and semiarid
Explanation:
Because they are the lowest in the climate areas. hope this somewhat helps you out
~dry and polar: cold air cant hold as much water vapour as warm air, so precipitation is less likely.
Hope this helped you- have a good day bro cya)
aerobic fitness is how well the body transports and utilizes _______ for energy.
Answers
Answer: Oxygen
Explanation: There's no explanation to go with the answer, sorry.
5. What muscle is below the deltoid and is attached to the ulnar process? How many heads does this muscle have?
Answers
Answer:
What muscle is below the deltoid and is attached to the ulnar process? How many heads does this muscle have?
Explanation:
Triceps is the muscle that is responsible for the extension of elbow joint and also contribute to extension of shoulder joint. This muscle have three origin, that's why the name triceps. The triceps muscle has three heads which are:
A. The long head originates from the infraglenoid tubercle of scapula.
B. The lateral head originates from above the radial Grove in humerus.
C. The medial head originates form below the radial Grove in humerus.
These heads meet to form the body of triceps which gets inserted as triceps tendon in the olecranon process of ulna just behind the elbow. The contraction of this muscle causes the extension of the elbow joint.
Deltoid muscles are in your shoulder, which is the ball-and-socket joint that connects your arm to the trunk of your body. Deltoid muscles help you move your arms in different directions.
What is Deltoid muscle?The muscle known as the triceps is in charge of extending the elbow joint and helping to extend the shoulder joint. The name triceps refers to the fact that this muscle has three origins.
The scapula's infraglenoid tubercle is the source of the long head. In the humerus, the lateral head develops from above the radial Grove. In the humerus, the medial head develops from below the radial grove.
The triceps body is formed when these heads come together, and it is placed as the triceps tendon in the ulna's olecranon process, right beyond the elbow. The elbow joint extends as a result of this muscle contracting.
Therefore, Deltoid muscles are in your shoulder, which is the ball-and-socket joint that connects your arm to the trunk of your body. Deltoid muscles help you move your arms in different directions.
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what is Soil erosion..?
Answers
Explanation: Soil erosion is a gradual process that occurs when the impact of water or wind detaches and removes soil particles, causing the soil to deteriorate. ... The impact of soil erosion on water quality becomes significant, particularly as soil surface runoff. Sediment production and soil erosion are closely related.
State TWO reasons why enzymes are referred to as 'biological catalysts'.
Answers
Answer:
Like all other catalysts, enzymes are characterized by two fundamental properties. First, they increase the rate of chemical reactions without themselves being consumed or permanently altered by the reaction. Second, they increase reaction rates without altering the chemical equilibrium between reactants and products.
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which of the following is a true statement about glycolysis?
A. electrons and hydrogens get transferred to NAD+, making NADH
B. Electrons and hydrogens get removed from glucose when it gets oxidized
C. ATP gets made when a phosphate is transferred to ADP
D. ALL OF THE ABOVE
Answers
All the options are true statements regarding the glycolysis and its mode of
operation.
Glycolysis involves the breakdown of glucose in order to release energy.
This produces pyruvate, two hydrogen ions , two molecules of water and
the free energy is used to produce ATP
In glycolysis, electrons and hydrogens get removed from glucose when it
gets oxidized and then they get transferred to NAD+, making NADH.
The ATP is generated by the transfer of a phosphate to the ADP to form ATP
which is a source of energy.
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using your knowledge of photosynthesis, explain what is meant by the sentence “plants give us what we need and we give plants what they need.”