Answer:
External factors include physical and chemical signals. Growth factors are proteins that stimulate cell division. – Most mammal cells form a single layer in a culture dish and stop dividing once they touch other cells.
Explanation:
From Google
Answer:
physical and chemical signals
Explanation:
Which two stars are most similar in luminosity?
Answer:
Procyon B and Proxima Centauri
Explanation:
Procyon B and Proxima Centauri are most similar in luminosity but Alpha Centauri and the Sun have most similar luminosity and temperature.
The primary star in the system, Procyon A, is a bright yellow-white star and one of the brightest stars in the night sky. The two stars that are most similar in luminosity are Procyon B and Proxima Centauri.
Procyon B is a white dwarf star that is part of the Procyon binary star system, located approximately 11.4 light-years away from Earth in the constellation Canis Minor.
Proxima Centauri is a red dwarf star and the closest known star to our solar system, located approximately 4.24 light-years away in the southern constellation of Centaurus. It is a part of the Alpha Centauri star system, which also includes the binary pair of stars, Alpha Centauri A and Alpha Centauri B.
To compare the luminosity of stars, astronomers often use a classification system called the Hertzsprung-Russell (H-R) diagram. This diagram plots stars based on their luminosity and temperature. Stars of similar luminosity can be found within the same region of the H-R diagram.
Therefore, the two stars that are most similar in luminosity are Procyon B and Proxima Centauri.
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Which best defines a diploid cell during meiosis?
two diploid cells after the first meiosis. To provide clear explanation, in contrast haploid cells only contain 23 chromosomes and are created after meiosis II which is 4 in number.
Answer:
a cell that has double the number of chromosomes as the daughter cell
Explanation:
What is The Cell Theory?
Answer:
cell theory is the historic scientific theory, now universally accepted, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells.
Answer:
all living things are made of one or more cells. cells are the basic unit of life; and new cells arise from existing cells. it goes on and on
Explanation:
The two amino acids animated above are joined together by a
molecule of
in the process.
and form a
DONE
Intro
Answer:Peptide Bond and Water
Explanation:
The two amino acids animated above are joined together by a peptide bonds.
What do you mean by peptide bond?Along a peptide or protein chain, a peptide bond is an amide-type covalent chemical bond that connects two consecutive alpha-amino acids from C1 of one alpha-amino acid to N2 of another.
A covalent bond between two amino acids is known as a peptide bond. Peptide bonds are used by living things to make long chains of amino acids called proteins. Proteins play a variety of roles, including providing structural support, catalyzing crucial reactions.
When the carboxyl group of one molecule reacts with the amino group of the other molecule, a molecule of water H20 is released, forming a peptide bond between the two molecules.
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What is the absolute brightness of a white star?
Answer: 10 parsecs from earth
Explanation:
The ornaments plants called fems,why
Explanation:
Ferns are commonly known as ornamental plants because of their delicate appearance and bright colors. - Ferns have a huge variety of plants exhibiting different characteristics. - They are vascular plants.
please. follow. meWhat percentage of the atmosphere needs to be full in order for precipitation to fall?
Gene, DNA, cell Cell Membrane, Cell Wall, Chromosomes, and Nucleus in order from small to large
Answer:
DNA, Gene, Chromosome, Nucleus , Cell membrane, cell wall , cell
.......
explain how we can get energy out of ATP. What has to happen for us to get energy out of ATP?
Answer:yes
Explanation:
Can you help me with this question, and have a good day.
Answer:
Phenotype
Explanation:
A Phenotype refers to the observable physical properties of an organism. Hope this helps
Which organelle packages proteins into vesicles? *
A chloroplasts
B nucleus
C ribosomes
D Golgi apparatus
Which organell
Answer:
The Golgi Apparatus
Electron transport in mitochondria results in a chemiosmotic gradient of which particle across the mitochondrial membrane?
1. ADP
2. ATP
3. Protons
4.neutrons
Answer:
ATP
Explanation:
"The electron transport chain forms a proton gradient across the inner mitochondrial membrane, which drives the synthesis of ATP via chemiosmosis."
-Khan Acadmey
How do stars produce energy through nuclear fusion
Answer: Stars produce energy from nuclear reactions, primarily the fusion of hydrogen to form helium. These and other processes in stars have lead to the formation of all the other elements.
which chemical equation is balanced …
PLEASE HELP ILL MARK U BRAINLIEST - THANKYOU
D is correct answer as shown in the picture .
I ate spaghetti and meatballs for lunch. Which two
biomolecules were present in my lunch?
i need this answer now pls help
Answer:
the answer is not h20 for it is not made
the answer is b im really really sure cuz
Which statement best describes a direct result of damage to a phospholipid bilayer?
The balance of ions inside a cell will be disrupted and proteins could leak out because the phospholipid bilayer forms the cell membrane.
Energy storage will be disrupted because the phospholipid bilayer is responsible for storing energy in the body.
Chemical messages could not be sent to different parts of the body because the phospholipid bilayer forms hormones.
A person would be vulnerable to disease because the phospholipid bilayer helps to fight infections in the body.
Answer: A: The balance of ions inside a cell will be disrupted and proteins could leak out because the phospholipid bilayer forms the cell membrane.
Explanation:
Answer:
A. The balance of ions inside a cell will be disrupted and proteins could leak out because the phospholipid bilayer forms the cell membrane.
please help Which diagram illustrates metaphase? A B C D
C diagram best illustrates metaphase.
What is mitosis and its stages?Prophase, metaphase, anaphase, and telophase are the four stages of mitosis.
1) Prophase: chromatin forms chromosomes, the nuclear envelope breaks down, and chromosomal centromeres bind to spindle fibers.
2) Metaphase: the chromosomes align on the metaphase plate (center of the cell)
3) Anaphase: sister chromatids are drawn to opposing poles of the cell;
4) Telophase: nuclear envelope recovers, chromosomes unroll into chromatin, and cytokinesis can begin.
hence A shows anaphase, B shows prophase and D shows telophase and cytokinesis
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By which mechanism does older oceanic rock move at a ridge? Magnetic forces move the rock. Continents drift and move the rock. The ridge subducts and moves the rock. New molten material rises and moves the rock.
Answer:
it is d the answer is right our welcome
Explanation:
The mechanism by which older oceanic rock move at a ridge is : ( D ) New molten material rises and moves the rock
Oceanic rocks ( crust ) are made up of basalt and gabbro. Oceanic crust is thinner when compared to continental crust because of the continental crust are composed of andesite and granite which are light colored as well.
Older Oceanic rocks are moved at the ridges only when new molten materials are formed and these material rises from the crust causing the older Oceanic rocks to move.
Hence we can conclude that the mechanism by which older oceanic rock move at a ridge is New molten material rises and moves the rock.
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Read the sentences.
I always spill on myself when cooking dinner. However, professional chefs themselves tend to maintain clean aprons and work areas when they cook.
Which choice correctly identifies two pronouns from the sentences?
I (reflexive), they (intensive)
I (intensive), they (reflexive)
myself (reflexive), themselves (intensive)
myself (intensive), themselves (reflexive)
Answer:
myself (reflexive), themselves (intensive)
Explanation:
"Reflexive Pronouns" refer to pronouns that are used when the subject and the object in the sentence are the same. The reflexive pronoun above is "myself." This pronoun functions as an object, but also refers to the subject "I."
"Intensive Pronouns" refer to pronouns that emphasize the noun that was already mentioned. In the example above, the intensive pronoun is "themselves" because it emphasizes the "professional chefs," which was mentioned beforehand.
It is easy to spot the reflexive and intensive pronouns because they end in "self" or "selves."
Examples: myself, yourself, himself, herself, itself, ourselves, yourselves, themselves.
Answer: myself (reflexive), themselves (intensive)
Explanation: I took the test I'm on k12 right now!
The table below shows the number of the sub-atomic particles in an atom of nitrogen.
Sub-atomic Particles
Sub-atomic Particle Number
Protons 7
Neutrons 7
Electrons 7
What is the amu of a nitrogen atom?
!PLZ I WILL REWARD BRAINLIEST!
Answer:
14amu
Explanation:
Given subatomic particles:
Number of protons = 7
Number of Neutrons = 7
Number of electrons = 7
Unknown:
Atomic mass unit; amu of nitrogen
Solution:
The atomic mass unit of a substance is the number of protons and neutrons in such an atom;
Atomic mass unit = number of protons + number of neutrons
This is because the mass of an atom is concentrated in the nucleus;
For the given specie;
Atomic mass unit = 7 + 7 = 14amu
Explain life cycle of bryophytes with example?
Please mark as Brainliest .......
Explanation:
Yes it is your answer I think it will help you
Help me please ASAP!
Answer:
It is used to edit genes
Explanation:
I looked it up.
Write a food chain from this food web with six tropic levels
Answer:
tiny water plants water fleas diving beetles small fish perch and heron
Explanation:
DNA and RNA are known as
Answer:
deoxyribonucleic acid and ribonucleic acid
Answer:
are know as nucleic acid
What characteristic defines this organism as eukaryotic
a.
ability to move
c.
ability to repond
b.
presence of a nucleus
d.
irregular shape and size
Answer:
b
Explanation:
its an organism consisting of cells in the form of chromosomes with a distinct nucleus.
DOODS IF YOU KNOW ABOUT BIOLOGY HERE ARE 2 QUESTIONS...YOU GET 10 POINTS IF YOU ANSWER BOTH AND BRAINLY!!
Answer:
mRNA
Explanation:
Please help me out once again
Which best describes two counteracting forces on an object?
using a dolly to push a box to another location
two children pulling apart a wishbone
a group of dogs pulling a dogsled across the ice
two people pushing a broken-down car up the road
Answer:
The answer is B: Two children pulling apart a wishbone
Explanation:
Edge2020!
Answer:
b
Explanation:
Homologous chromosomes may exchange segments, this is called crossing over. Crossing over increases genetic
variability
Where would you add crossing over" to the Venn diagram?
Answer: Meiosis
Explanation:
Crossing over of a chromosome always happen in meiosis 1. The material between the different sister chromatid in exchanged, so each gamete will be different of each other.
According to the question, the correct option is meiosis.
What is crossing over?Crossing over is the exchanging of genetic material that occurs in the germline. During the formation of egg and sperm cells, also understood as meiosis, paired chromosomes from each parent align so that similar DNA sequences from the paired chromosomes cross over one another.
Thus, meiosis is correct.
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