Answer:
The cell cycle of cell multiplication is regulated by three types of genes, the regulatory genes that control mutations, the generic promoters of cell replication, and genes that inhibit cell replication.
The balance between these three types of gene group are what result in a good multiplication of cells without mutations or neoplastic developments.
The p53 gene is one of the genes that is considered as the guardians of the genome, since it is in charge of corroborating and regulating mutated cells, in this way it inhibits their progression in the cell cycle by putting a stop to not replicate defective genes or genes with alterations.
Explanation:
The p53 gene is one of the most altered genes seen in malignant neoplasms, since by altering our guardian of the genome many mutations overlook and more carcinogenic potential will have neoplastic tissue.
In the three groups of genes that we write, all three have a fundamental roll in the cell cycle, but in order to trigger malignant neoplasms, it is necessary that there be a continuous series of gene mutations in these three groups, it is not enough with the mutation of a single gen.
How do organisms get the energy they need?
Group of answer choices
A)Plants break down the glucose they produced in photosynthesis, and animals get energy from eating other organisms
B)Plants do not require energy because they do not move, and animals get energy by performing exercise
C)Plants get energy from fertilizers, and animals get energy by drinking water
D)Plants get energy from glucose produced in the soil, and animals get energy directly from sunlight
Answer:
The answer is A
Explanation:
Plants use photosynthesis to create oxygen and glucose from carbon dioxide in the chloroplast and animals get some of this energy by eating the plants (look up Energy Pyramid for more examples)
How do normal faults differ from reverse faults?
Answer:
In a Normal Fault, the hanging wall moves downwards relative to the foot wall. They are caused by extensional tectonics. This kind of faulting will cause the faulted section of rock to lengthen. In a Reverse Fault, the hanging wall moves upwards relative to the foot wall.
Explanation:
Answer:
In a Normal Fault, the hanging wall moves downwards relative to the foot wall. They are caused by extensional tectonics. This kind of faulting will cause the faulted section of rock to lengthen. In a Reverse Fault, the hanging wall moves upwards relative to the foot wall.
Explanation:
When 2 heterozygous parents (Rr) are crossed, what are the alleles of the
offspring?
a. 100% Rr
b. 50% RR, 50% Rr
c. 25% RR, 50% Rr, 25% rr
When two heterozygous parents (Rr) are crossed due to dominance effect offspring will be 25% RR, 50% Rr, 25% rr, hence c is correct option.
What is heterozygous parents?Heterozygous condition when parent having both the allele showing different trait of one character and one allele masks the trait of another allele.
When cross of heterozygous parents (Rr) x (Rr).
Gametes are R,r and R,r.
Genotype will be 25% RR, 50% Rr, and 25% rr.
Due to law of dominance, one allele R is dominant over the other allele during crossing over.
Cross of parents in punnet square is attched in image below.
Therefore, both the parents are heterozygous, so offsprings will be having genotype, 25% RR, 50% Rr, 25% rr, hence option c is correct.
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Carbon is stored in
A.Trees and other living things
B.Oceans
C.Underground in soil and fossil fuels
D.All are correct
Answer:
all are correct
Explanation:
Carbon is also found in the atmosphere where it's a part of carbon dioxide gas emitted when fossil fuels are burned and when living organisms breathe. It's in organic matter in the soil, and it's in rocks. But far and away the most carbon on Earth is stored in a surprising place: the ocean.
Which of the following statements is accurate?
Choose 1 answer:
A Species Y and Species Z can
interbreed.
Species A and Z share a recent common ancestor.
Species A and Species Y are the same.
Species X evolved from Species Y.
Stuck? Watch a video or use a hint.
Reporta problem
Answer: Species A and Species Y are the same
Explanation: Good luck! :D
I WILL MARK BRAINLIEST!!!!
Water has a “bent” geometry. Which explanation does not explain why?
A.Water’s oxygen has unbonded electron pairs that repel each other.
B.Water can form hydrogen bonds.
C.Electrons are evenly distributed in the water molecule.
Answer:
c i think
Explanation:
Answer:
C.Electrons are evenly distributed in the water molecule.
Explanation:
A group of tissues that join together to perform a specific function is___?
Answer:
An organ
Explanation:
Which event would most likely lead to the emergence of a new species from an existing species?
A.
part of a population becomes reproductively isolated
O
B.
part of a population is killed by an infectious disease
O
C .
a beneficial trait disappears from a population
D.
a beneficial trait appears in a population
How do automatic stabilizers help counter the ups and downs of the business cycle ?
organisms that must obtain nuttrients and energry by eation other organisms are
Answer:
consumer or heterotrophic
Explanation:
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Kono Dio Da!!!
ASAP!! HELP PLEASE!! I WILL MARK YOU BRAINLIEST!!!
What do plants and phytoplankton have in common?
a
live on land
b
are consumers
c
use photosynthesis
d
use chemosynthesis
Answer:
C
Explanation:
Im not 100% sure but I'm almost 100% sure thats the answer
Answer:c
Explanation:
True/False: Disease and Invasive Species are two causes of extinction.
Answer:
True
Explanation:
Answer:
True.
Explanation:
A mother has one allele for dimples and one allele for no dimples. How many
of her gametes will carry the allele for dimples?
A. 0%
B. 25%
C. 100%
D. 50%
Answer:
50%, i believe
Explanation:
So the mother in the problem must have gotten her alleles from her mother and father. Who donated what we are not sure. All we know is that she got one allele for dimples and one allele for no dimples. These are part of the mother's somatic cell DNA. This DNA is duplicated during interphase, right before meiosis occurs as the mother begins to form her gametes, however.
Which form of nitrogen is most abundant on earth? N2 (Atmospheric Nitrogen) NH3 (Ammonia) NO2- (Nitrite) NO3- (Nitrate)
Answer:
N2 (Atmospheric Nitrogen)
Explanation:
Nitrogen is a chemical element positioned as 7 on the periodic table. Nitrogen is found as a gas in the atmosphere (N2) and constitutes the most part of the air making it the most abundant gas on Earth.
Atmospheric nitrogen (N2) is the most abundant of its form found on Earth. It can be converted to its compound form e.g. nitrates (a plant usable form) by lightning and some bacteria in the soil.
Please help me with this one.
Answer:
Explanation:
just add what you think how to do it.
During meiosis, homologous chromosomes exchange genetic
material. This exchange of genetic material -
As larvae, echinoderms have bilateral symmetry? Yes or no ?
Answer:
no
Explanation:
Weebugs get energy storage molecule from eating greenleafs. What change to the greenleaf population could decrease the number of births in the weebug population?
A) increase greenleafs
B) decrease greenleafs
A decrease in green leaves can decrease the number of Weebugs. Hence, option B is correct.
How do green leaves make energy?Green leaves are producers. They contain a pigment named chlorophyll which helps to trap sunlight which is required by the leaves to make food, and this process is called photosynthesis.
Green leaves take carbon-di-oxide, sunlight, and water, and in the presence of chlorophyll, glucose is produced and oxygen is released as a by-product. This process takes place in the chloroplast. There are four steps involved in photosynthesis that is Absorption of light, transfer of electrons, ATP production and carbon fixation,
These leaves are consumed by primary consumers such as Weebugs, and they get energy. A decrease in green leaves can decrease the number of Weebugs. Hence, option B is correct.
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Alice is studying biological molecules. She has isolated a molecule and identified the nucleotide bases adenine, cytosine, guanine, and thymine. Which molecule did Alice isolate?
Answer:
DNA
Explanation:
I know this from learning it in school
Selection is:
O picking what you want for supper
O making more babies than will survive
O having an adaptation
O a desirable trait when choosing a mate
Answer:
Making more babies that will survive and having an adaption
Explanation:
How long (in centimeters and years) was the Precambrian period to the rest of the scale?
Answer:
Total length of Precambrian period is [tex]6[/tex] meter [tex]45[/tex] centimetres
Explanation:
Precambrian period has two major sub divisions
a) Archean (oldest) and
b) Proterozoic
The length of Precambrian period would be equal to the sum of length of Archaean eon and the Proterozoic eon.
The length of Proterozoic eon [tex]= 240 + 55\\[/tex]
[tex]= 295[/tex]
Or
[tex]2[/tex] meter [tex]95[/tex] centimetres
The length of Archean eon [tex]= 3[/tex] meter [tex]50[/tex] cm
Total length of Precambrian period [tex]= 295 + 350\\[/tex]
[tex]= 645[/tex] centimetres
Or
[tex]6[/tex] meter [tex]45[/tex] centimetres
This term takes into account both the actual emission of carbon by an act, but also the
carbon used to help create, transport, and dispose of any waste associated with that
act. What is this phrase?
This is a curved, pointed appendage, found at the end of a toe or finger in most mammals, birds, and some reptiles. It is often used to refer to the hooked structures found on arthropods.
Answer:
Claws
Explanation:
I was doing the test
Which of the following identifies the most important reason why the percentage of deaths due to infectious diseases dropped from 1970 to 2015?
Group of answer choices
A.The number of people living in poverty fell as nations became increasingly more developed.
B.More people moved into urban areas, and fewer people remained in disease-prone rural areas.
C.More children were immunized against the major infectious diseases.
D. The use of pesticides became increasingly effective at killing biological threats.
Answer:
A
Explanation:
I choose A people in one hand really have to come together and make this world a strong, better, and brighter place.
Which of the following fields is(are) part of the environmental movement?
а. scientific
b. social
C.political
d. all of the above
Scientific, social, and political all are the fields are part of the environmental movement. Thus, the correct option is D.
What is the Environmental movement?Environmental movement was a social, political, and the scientific movement for addressing environmental issues. This movement includes conservation and the green politics. It is also known as the ecology movement.
Environmental movement includes the sustainable yield of natural resources, the preservation of wilderness areas and also biodiversity. The modern Environmental movement, has began in the time of 1960s with the concern about air and water pollution, became broader in scope to include all landscapes and human activities.
Therefore, the correct option is D.
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What are the possible outcomes of combining a
lower with green leaves (GG) and green/red leaves
Gg) with a Co-Dominance relationship?
a. 3 Flowers with green leaves and 1 with red leaves
b. 2 Flowers with green leaves and 2 flowers with green/red leaves
c. 2 Flowers with green leaves and two flowers with 2 red leaves
Answer:
im guessing green is dominant
Explanation:
Two green leaves, two green/red leaves
1pt Which of the following cells would be produced by meiosis?
A. a heart cell
B. an eye cell
C. a sperm cell
D. a skin cell
Answer: c
Explanation:
because meiosis produces our sex cells
Using the drop-down menus, match the definitions below with the appropriate terms. All of the living and non-living things in a particular area: The total variety of organisms that live in the biosphere: A group of organisms that breed and produce offspring that can breed: All of the living things in a particular area:
Answer:
All of the living and non-living things in a particular area: environment
The total variety of organisms that live in the biosphere: biological diversity
A group of organisms that breed and produce offspring that can breed: species
All of the living things in a particular area: biotic factor
Explanation:
Environment is defined as the sum total of all living and non-living factors in a particular area. When they interact together as a unit, it is referred to as ecosystem.
Biological diversity refers to the total variety of living organisms that live in the biosphere.
Species refers to a an assemblage of similar organisms that are capable of breeding together to produce fertile offspring.
The biotic factor of an area refers to the living things/component of that area.
Answer:
Using the drop-down menus, match the definitions below with the appropriate terms.
All of the living and non-living things in a particular area:
✔ ecosystem
The total variety of organisms that live in the biosphere:
✔ biodiversity
A group of organisms that breed and produce offspring that can breed:
✔ species
All of the living things in a particular area:
✔ community
Explanation:
Information related to the organisms found on Earth during
various geological time periods is represented in the accompanying
chart.
OOEEOC 0-0 C-E
2525
-Edw-
4.6 (?) Billion
600 Million
200 Million
60 Million
Years Ago
Years Ago
Years Ago Years Ago
Precambrian
Paleozoic
Mesozoic Cenozoic
(Simple
(Age of Amphibians, Fishes, (Age of Reptiles) (Age of
Multicellular
and Invertebrates)
Mammals)
a organisms and
First Protists)
Past
Present
Geologic Time
Which statement concerning the first appearance of the organisms
over the time period represented in this chart is most likely
correct?
Answer:
D
Explanation:
A researcher attempts to use a segment of ribosomal RNA as a molecular clock to calculate the date of the last common ancestor of two species. He finds that the two species diverged from a common ancestor 150 million years ago. These particular species have abundant fossil records that strongly suggest that these species diverged 100 million years ago. Which of the following answer choices best describes a reason for the discrepancy in the date of the last common ancestor of these species?
A. Ribosomal RNA is not a reliable molecular clock and should not be used for dating.
B. The neutral mutation rate used in calculating the last common ancestor date may not have been accurate.
C. It is highly likely that the two organisms did not share a common ancestor, so the results are invalid.
D. A large portion of the ribosomal RNA is not vital to survival, so it is not likely to be well preserved.
Answer:
B
Explanation:
It is B because the mutation rate should not have been accurate if it showes that they diverged 150 million years ago. But the abundant fossil records show that it diverged 100 million years ago.
Hope this helps:)
Ribosomal RNA is not a reliable molecular clock and should not be used for dating.
What is molecular docking?In structural molecular biology and computer-assisted drug design, molecular docking is an important technique. The purpose of ligand-protein docking is to anticipate a ligand's most common binding mode with a protein having a known three-dimensional structure.What is dating? Carbon dating is used to determine the age of ancient material such as an archaeological or paleontological specimen .A molecular clock estimates how long it has been since similar species separated from a common ancestor based on DNA sequences (or the amino acid sequence of proteins encoded by DNA).
Hence, the correct option is A.
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