I believee it's the Cretaceous Period?
All of the dinosaur periods are at the start of Earth's timeline, and "the end of life's start" suggests the end of dinosaurs, meaning, when the asteroid hit. So it's probably one of the Mesozoic periods.
The T-rex first appeared in the Cretaceous Period, and the asteroid hit somewhat during middle of the Cretaceous Period.
I hope I'm right, and I hope this helps!
The atomic number of carbon is six, which means that a carbon atom has six protons. Carbon has three
naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. Which of these statements are true
about carbon and its isotopes? Select all that apply.
A. All carbon atoms have six neutrons.
B. All carbon atoms have six protons and six electrons.
?
C. Atoms of all carbon isotopes have either more than 6 electrons or fewer than 6 electrons.
D. Atoms of some naturally occurring carbon isotopes may have six neutrons.
E. Atoms of some naturally occurring carbon isotopes may have twelve neutrons.
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Answer:
B. All carbon atoms have six protons and six electrons.
D. Atoms of some naturally occurring carbon isotopes may have six neutrons
Explanation:
Isotopes are atoms of the same elements having same atomic number but different atomic masses.
Atomic number is the number of protons (or electron number in neutral atoms) present in the atomic nucleus of the atom.
Atomic mass number is the sum of protons and neutrons present in the nucleus of the atom.
Considering the options above from the above definitions:
A. All carbon atoms have six neutrons is false because carbon-12, carbon-13 and carbon-14 has 6, 7 and 8 neutrons respectively.
B. All carbon atoms have six protons and six electrons is true because the atomic number of carbon is 12.
C. Atoms of all carbon isotopes have either more than 6 electrons or fewer than 6 electrons is false because atoms of all carbon isotopes have six electrons.
D. Atoms of some naturally occurring carbon isotopes may have six neutrons is true because atoms of carbon-12 have six neutrons.
E. Atoms of some naturally occurring carbon isotopes may have twelve neutrons is false because none of carbon-12, carbon-13 or carbon-14 have twelve neutrons.
Answer:
the answer is b and d
Explanation:
A student observed a palisade cell using a microscope. The microscope had four objective lenses, each with a different magnification. Which objective lense should the student use?
Answer:
x4 objective
Explanation:
The student should use the x4 objective lense in order to be able to observe the palisade cell of a leaf.
The palisade cells are located below the cuticle and the epidermis of the leaf and the x4 objective will provide the largest field of view for adequate study by the student. The x4 objective is also easier to focus compared to the lower objectives.
How does DNA in cells determine an organisms complex traits
Answer:
DNA contains codes for proteins, which are necessary for the growth and functioning of an organism. DNA separates into long single strands that make up each part of an organism. DNA produces the energy an organism needs in order to grow.
Explanation:
WILL GIVE BRAINLIEST!!!!!!
An amino acid is to a polypeptide as:
glycogen is to glucose.
testosterone is to a steroid hormone.
a phospholipid is to a plasma membrane.
a nucleotide is to a nucleic acid.
Answer:
I think it's D I could be wrong but that's what I'm thinking
Answer:
The correct answer in Option B.
The analogy pertains to the building blocks or monomers of biomolecules, with the monomer preceding the polymer....
plz mark brainliest
What is the relationship between the depths of earthquake foci and latitude
Which statement about the genetic traits of humans is true?
O Visible traits depend on the dominant and recessive forms of genes from each parent.
O Recessive forms of genes are always visible.
Dominant forms of genes are always inherited from each parent
O Visible traits are the same for each member of a family.
Question 11
A hereditary trait is one that is genetically determined. Inherited traits are passed down from parent to child according to the rules of Mendelian genetics. Most traits are not strictly determined by genes, but rather are influenced by both genes and the environment....
Explanation:
The characters that offspring inherits from its parent is called genetic traits. It passes from parent to child in the form of a genome inside the cell nucleus.
The correct statement about the genetic traits of humans:
Option A. Visible traits depend on the dominant and recessive forms of genes from each parent.
This can be explained as:
Recessive traits are not visible in the presence of dominant traits and get masked.The dominant trait does not always get transferred from each parent. Even a single parent can pass a dominant allele.Visible traits are not the same and common for family members as crossing over and recombination occurs.Therefore, dominant and recessive allele from parents decides the phenotype.
To learn more about genetic inheritance follow the link:
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what explains why water moves from the roots to the leaves of plants
Answer: The word you are looking for is cohesion
Explanation.it is important for moving water from the roots to leaves
What three factors influence autumn leaf color? (pink)
Answer: Three factors influence autumn leaf color-leaf pigments, length of night, and weather, but not quite in the way we think.
*
v) Carbon dioxide is important for photosynthesis
Answer:
This statement is true.
Answer:
true
During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. ... However, photosynthesis doesn't just drive the carbon cycle — it also creates the oxygen necessary for respiring organisms.
Explanation:
hope this helps you
Crown me as brainliest:)
Explain how coupling reactions allow a cell to capture the free energy of glucose oxidation rather than allow it to escape to the environment through heat
Answer:
This reaction is endothermic, therefore the energy uptake will be the main pillar of metabolism, in addition, the phosphorylation energy will always be used for the cell, on the other hand, in the case of phosphorylation, reverse effects will be seen, and this is when a I play an enzyme called kinase.
On the other hand, the intake or capture of energy in the form of energy currency is understood as the medium GIVES energy to the cell, it captures it and is not exothermically released in the form of heat.
Explanation:
These processes happen because of it at postpondrial moments, where the insulin hormone is high and it is sought to phosphorylate glucose to retain it inside the cell so that it does not dissipate exothermically.
This is the mechanism by which the human generates energy reserves of complex carbohydrates such as glycogen.
what is the percentage of thymine in human ?
Answer:
29.4% or rounded 29%
Explanation:
Thymine is a compound which is one of the four constituent bases of nucleic acids. A pyrimidine derivative, it is paired with adenine in double-stranded DNA.
Hope this helps ya!!
How many neutrons does Phosphorus have? Use the diagram below to help find the amount:
Answer:
16
Explanation:
PLEASE PLEASE ANSWER ASAP
How is photosynthesis and cellular respiration related?
Answer:
They go hand in hand as a cycle.
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant, and oxygen is a by-product. Cellular respiration converts that glucose and oxygen into water and carbon dioxide, which then go through photosynthesis again.
Analyze: Click the FOREST tab. Click the plus (+) button for mushrooms several times. Click Advance year a few times. Select the DATA tab. How did adding mushrooms affect trees? GIZMOS.
Answer
82
Explanation:
i think
Answer:5b
Explanation:itchy
The measurement of how far the particles are pushed from their _______________is called amplification.
(Can somebody please help me out. I'm giving 20 points and Brainliest for the first correct answer.
limit
compression
wavelength
starting point
Answer:
i think its compression
Explanation:
...
Answer:
The anwser is the starting point hope this helps :)
Explanation:
i took the test and got it right :)
what does earth have that makes it different from other planets
Answer:
Life, water, huge population of living organisms, biodiversity of species.
Explanation:
Earth is the only planet in our solar system that can maintain living organisms. It is the only planet in our solar system that is suitable for humans and animals to live on. Only planet with water suitable for a human/animal to drink. Many different types of species and organisms live on earth. And there is a large amount of living organisms living on earth.
Hope this helps!
Which of the following contains all the rock, soll, lava and magma found on
Earth
A) Geosphere
B) Atmosphere
C) Hydrosphere
Answer:
Geosphere
Explanation: geo means earth
Answer:
Geosphere
Explanation:
Genetic information is stored and transmitted within
A.nucleic acids.
B. proteins.
C.amino acids.
D.sugars.
due in 5 min hurry please help
Hey there!
The answer is "not producing enough of what you need".
Answer:
the answer is c I'm pretty sure but don't hold me on it
what are the building blocks of protiens
a- the empire state
b- washington monument
c- amino acids
d- your mom
Answer:
amino acids
Explanation:
amino acids in protein build up muscle and provide energy storage. I hope this helps
Which mutation results in the mutated DNA sequence having more or less,
nucleotides than the original?
Silent
Nonsense
Missense
Frameshift
Answer:
Frameshift
Explanation:
Mutations are randomly-occuring changes that occur within the genetic code, DNA due to errors within replication. DNA molecules are long-chain, helical macromolecules that store genetic information They are made up of varying sequences of monomers called nucleotides. which form base pairs and sequences of codons in a reading frame, which gives instructions for protein formation.
Single nucleotide polymorphisms are common, and often result in no changes in amino acids, as silent mutations. Some errors add a random nucleotide (SNP) that results in a premature stop codon, called nonsense mutation. Missense mutations are SNPs that change the sequence of codons resulting in a different amino acid.
Frameshift mutations result from insertions or deletions of nucleotides not divisible by 3. This results in more or less nucleotides needed for a codon and disrupts the reading frame- this results in a different translation of proteins
Describe how bacteria have become resistant to treatment.
Answer:
Explanation:
Bacteria gene will mutate and this trait will be passed along to the offspring. This allows them to withstand treatment.
What causes a volcanic eruption?
If a strand of DNA has 35% A, what percent will be T?
Answer:
65%
Explanation:
7) Match who accomplished what with the following options.
a) Charles Darwin
b) Carl Sagan
c) Aristotle
d) Alfred Wallace
e) Stanley Miller
1) ______ He was able to produce organic molecules from inorganic molecules by replicating what he thought to be conditions of early earth's atmosphere
2) ______ He was able to produce ATP (energy) molecules by replicating conditions of early earth's atmosphere.
Answer:
1. stanley miller
2. carl sagan
Explanation:
it for dreelliot 1/2 divided by 1
RED HAIR IN HUMANS……
PLEASE HELP ILL PUT U IN BRAINLIEST
Answer: A B E
Explanation:
2. An atom consists of 21 protons 22 neutrons and a number of electrons which
information will be MOST helpful in determining the atom's identity
The number of protons and neutrons
The number of protons
The number of electrons
The number of valence electrons
CUERALL
Answer:
the number of valence electrons cuerall
What if researchers followed a similar method used in this activity to calculate the correlation coefficients for the gene expression patterns of every patient with osteosarcoma and they found that all patients fell into two categories of gene expression patterns? What would this tell you about the single disease we call osteosarcoma? How might this information affect osteosarcoma cancer patient diagnosis and treatment in the future?
Answer:
- Abnormal gene expression patterns can lead to osteosarcoma
- Different signaling pathways (at least two) are involved in osteosarcoma
- Differentially expressed genes might be promising biomarkers for early detection of osteosarcoma
Explanation:
Cancer can be defined as a group of genetic diseases that are characterized by uncontrolled/inappropriate cell growth. In general, cancer pathways are associated with abnormal expression of signaling components that disrupt the regulatory networks capable of controlling cell function, thereby cancerous cells can inhibit programmed death cell (apoptosis). Osteosarcoma is one type of cancer disease that starts in the bones, i.e., this disease may be triggered by overactivity of bone cells. Additionally, it is important to note that different immune-related genes were recently found to be dysregulated in osteosarcoma. For example, differentially expressed immune-related genes involved in PI3K/AKT, MAPK and JAK-STAT signaling pathways have shown prognostic value in this disease.
Abnormal gene expression patterns can lead to osteosarcoma, different signalling pathways are involved in osteosarcoma, and differentially expressed genes might be promising biomarkers for the early detection of osteosarcoma.
What is the cause of osteosarcoma?Most osteosarcomas are not caused by inherited gene modifications, but instead are the effect of gene changes acquired during the individual lifetime.
Sometimes these gene modifications are caused by radiation therapy used to treat another form of cancer because radiation can harm the DNA inside cells.
Thus, these are the following reasons.
To learn more about osteosarcoma click here:
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Which question can be used to evaluate reliability of a source?
“Do these results support the author's own opinion?”
“Is this data challenged by anyone in the public?”
“Is this research relevant to me?”
“Who was paid to do this research?”
Answer:
Do these results support the Author's own opinion?
Explanation:
The question can be used to evaluate the reliability of a source is Do these results support the author's own opinion?
In sources (books, articles, etc), reliability implies the information of a source can be trusted. This occurs if:
All the information is based on factsThe information is not manipulated by the author's opinion or interestsIn this context, it is expected the information of the source is objective rather than influenced by the author's opinion. Therefore, one way to check the reliability of a source is "Do these results support the author's own opinion" because if the information is manipulated by a personal opinion, the source is not reliable.
Also, other questions are not appropriate because they are related to other aspects such as relevance, not reliability.
Learn more in: https://brainly.com/question/11616885