(Choose the correct word)
In a DNA molecule, the [nitrogen bases/phosphates] of each chain form bonds that hold the halves of the molecule together.
3.
How does mass extinction affect species that survive?
There are no surviving species if a mass extinction occurs.
They fill new roles in the changed environment.
They will soon become extinct.
They combine gene pools.
Answer:
They fill new roles in changed environment
Explanation:
why is a keystone species' role in the ecosystem compared to the keystone brick's role in the arch?
13. Which statement is true about the process of mitosis? *
A. The process occurs only in plants.
B. The process occurs only in animals.
C. The process occurs in every type of organism.
D. The process occurs only in multicellular organisms.
Answer:
D. The process occurs only in multicellular organisms.
What can be concluded about the importance of mitosis in repairing cuts on the skin?
Mitosis is helpful but not necessary in repairing cuts on the skin.
O Mitosis is a necessary step in repairing cuts on the skin.
O Mitosis slows down the process of repairing cuts on the skin.
Mitosis is not involved in repairing cuts on the skin.
Answer:
Mitosis is a necessary step in repairing cuts on the skin.
Explanation:
When the portion of tissue cracks, then there are cells wasted. So, mitosis will generate tones of fresh cells in periods to fill the break and secure the tissue greater again. This guarantees that the tissue is back to health and can perform accurately. It's like wound healing. A necessary goal of mitosis is to replenish dead or destroyed cells like skin cells that are continually being shed.
Only the constituents of amino acids and proteins
Explanation:
An amino acid is an organic molecule that is made up of a basic amino group (−NH2), an acidic carboxyl group (−COOH), and an organic R group (or side chain) that is unique to each amino acid.
the common property of all protein is that they consists of long chain of a-amino acids
(alpha amino) acids .... In protein molecules the a-amino acids are linked to each other by peptide bonds between the amino group of one amino acid and the carbonxy group of its neighbours
Please help, 100 points! Most scientists agree that life began on earth approximately 3.5 billion years ago. What would a scientist need to do in order to test this hypothesis and gather evidence?
A: Recreate the composition of the atmosphere and oceans on Earth as they were 4.5 billion years ago.
B: Travel to a similar planet or moon in its own early formation and recreate the chemical reactions which took place on Earth.
C: Gather the raw materials, such as inorganic compounds, on Earth 4.5 billion years ago and recreate the chemical reactions that could have taken place.
D: This is not a testable hypothesis since there is no way to travel back 4.5 billion years or to run the experiment for the next 4.5 billion years. (This one is obviously wrong)
Around 3.8 billion years ago, near the conclusion of this phase known as the late heavy bombardment, life on Earth first emerged, hence option A is correct.
What is the origin of life?Even before the 3.5 billion years ago when the oldest fossils on Earth were discovered, just at the conclusion of the time of late intense bombardment, there is evidence of biological activity.
The 3.5 billion-year-old "stromatolites," which are hard structures created by bacteria, also provide evidence of their presence. Stromatolites are produced when microbe-made sticky mats catch and organize sediments into layers.
It has been discovered that trophozoites contain organic material from 3.5 billion years ago. 3.5 billion-year-old rocks have been found to contain microbial remnants, some of the planet's earliest evidence of life.
Therefore, 3.8 billion years ago, near the conclusion of this phase known as the late heavy bombardment, life on Earth first emerged, hence option A is correct.
Learn more about the origin of life, here:
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Why is fertile soil important in plant growth?
Answer:
A fertile soil has the following properties: The ability to supply essential plant nutrients and water in adequate amounts and proportions for plant growth and reproduction; and. The absence of toxic substances which may inhibit plant growth.
Match the cave type with its example
Column A.
1.____formed by solution
2.____formed by erosion
3.____formed by pressure/flow
Column B.
A. Limestone caves
B. Lava tubes
C.sea caves
The gamete of a red fox has 19 chromosomes in it. How many chromosomes are in the red foxes DIPLOID skin cells?
Answer:
38 chromosomes are in the red foxes DIPLOID skin cells
Explanation:
There are two principal types of cells in the organism:
Diploid cells (2n) Somatic diploid cells (2n) reproduce by the process of mitosis and produce two diploid cells.Germ diploid reproductive cells (2n) also reproduce by mitosis and produce two diploid cells. But can also reproduce by the process of meiosis, suffering a reduction in the number of chromosomes and producing four haploid cells (n). Haploid cells (n)Gametes are the product of germ cell division by meiosis, and they have only one set of chromosomes, n (19 in this example). Their destiny is to merge in the process of fecundation, during which a new diploid cell called the zygote emerges through fertilization. The zygote is a complete diploid cell that suffers successive mitosis and forms a new organism (a new fox in this case).
- So, through meiosis, the diploid germ cell (2n) produces four haploid cells (n) that are the gametes.
- Through fecundation or fertilization, two gametes (n) merge and produce a diploid cell (2n) that is the zygote.
If the red fox gamete has 19 chromosomes (haploid number n, the single set of chromosomes), it must merge with another gamete (coming from the other parent) with 19 chromosomes to form the zygote. The zygote is a diploid cell. The zygote will suffer many mitosis divisions to become a new fox.
To know the number of chromosomes in a skin cell, we need to duplicate the number of chromosomes in the gamete (19).
N = 19 = Haploid number2N = 2 x 19 = 38 = Diploid numberthe hyphae of bread mould that creep along the substrate?
Answer:
Ibdfjfvfjfb
Bbbndb
Explanation:
Nnx fjd dkd wkskss
13. Which of the following is a bacterial disease?
(a) Polimyelitis (b) Filariasis (c) Tetanus (d) Malaria
Answer:
TetanusHope it helps
Have a good day
a family does on a walk beside a river what would most likely happen to the river if the oceans did not exist
Answer:
The river would get larger because it would snow and hail more often.
Answer:
The river would get larger because it would snow and hail more often.
Explanation:
4.) How could you expand your radius of understanding about "Science"? I
Answer:
Throughout the below portion, the description of the given topic "Science" is characterized.
Explanation:
Today, human beings are inventing a variety of inventions to make their lives more simple and because of science, we can grow today. Science is also considered to be a conscience. Human beings have become a science, etc., to achieve their physical pleasures. Many wonderful wonders of science have completely transformed human life, Science has invented many things that all the people in the world are amazed at.why do plants look green?
Answer:
The longer answer lies in the details of photosynthesis, the electromagnetic spectrum, energy and “special pairs” of chlorophyll molecules in each plant cell. ... As such, plants look green because they absorb red light most efficiently and the green light is reflected.
Explanation:
Green plants are green because they contain a pigment called chlorophyll. Chlorophyll absorbs certain wavelengths of light within the visible light spectrum. ... Green light is not absorbed but reflected, making the plant appear green. Chlorophyll is found in the chloroplasts of plants
Answer:
Plants look green because of a natural pigment called chlorophyll, which absorbs the red, blue, and other wavelengths of light, and it reflects the green back to your eyes, so that is what you see. Chlorophyll traps the light from the sun to be used for photosynthesis, so without chlorophyll, plants could not survive!
Explanation:
hope this helps
Which part of an angiosperm contains seeds?
leaf
fruit
spore
pine cone
Answer:
fruit
Explanation:
If the code on the template DNA strand is TACGCA the RNA built from that template during transcription would have the sequence type your answer..
Answer:
AUGCGU
Explanation:
According to the base-pairing rule, Thymine (T) always pairs with Adenine (A), and Cytosine (C) always pairs with Guanine (G). In addition, RNA has Uracil (U) in the place of Thymine. Following these two rules, TACGCA is transcribed as follows:
T A C G C A
A U G C G U
Hence, the transcription product of TACGCA is AUGCGU.
Bees can pollinate all types of flowers.
Answer:
Yes,it's clear that bees play a vital role in food production. They are excellent pollinators! Most food crops—including fruits, vegetables, nuts, and seeds—must go through pollination. That's the process of moving tiny pollen cells between plants to help them make seeds.
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The ONLY way a new allele can enter a population is
Answer:
D. Mutations
Explanation:
how do variations lead to adaptations?
Answer:
Favorable variations may allow an organism to be better adapted to its environment and survive to reproduce. Beneficial traits are favored in a population so that they may become better represented. Changes in the genetic makeup of a species may result in a new species; this is biological evolution.
Which of these is a large reservoir of nitrogen that is unusable by most organisms?
soil
atmosphere
ocean
outer space
of the ozone depleting gases restricted by the Montreal Protocol, NOAA measurements show that atmospheric concentrations of
nearly all these gases were decreasing in the atmosphere by 2018. The graph depicts data collected in the stratosphere over
Antarctica. Which ozone depleting gas has almost been eliminated from the stratosphere?
Answer: C
Explanation: I took the test
help please I’m currently failing biology and need to get my grade up :((
How does the product of cell division with meiosis differ from the product of cell division with
mitosis?
The difference is that mitosis produces two diploid (2n) somatic cells that are genetically identical, but meiosis produces four haploid (n) gametes that are genetically unique from each other.
which of the following is not a function of the skeleton
Answer:
The answer is B
Explanation:
why do some scientists think the "origins" question cannot be answered scientifically?
I personally think because of the intelligent design vs. evolution theories. what do you think?
Answer:
agreed
Explanation:
for certain things like how humans were created and everything like that I totally agree because you can't really do research if something that over the years is probably either hidden or gone so if there wasn't any evidence of how any of this came to be by now it would be gone. some things you just can't put a logical explanation on
Please help me write this!! 20 points!!!!
Submit a one-paragraph summary describing the topic you chose, your model, what it represents, how you made it, and the specific science involved. It is important that you are using science terminology and are accurate.
I just need you to explain the science involved with specific terminology for the diagram below. Like the processes below described in detail!
Answer:
The diagram shows how how plants use carbon dioxide, water and sunlight to create glucose and oxygen, this process is called photosynthesis. It also shows how the mitochondria in animal cells create energy, this process is called respiration.
Question 1 of 10 Match each term with its best description.
1.Parent rock
The original rock before it metamorphoses. 2.Burial metamorphism
Parallel alignment of platy grains. 3.Metamorphic rock ?
A rock changed by heat, pressure, and fluids.
4.Foliation
A process that changes rock because of pressure with equal intensity from all directions
Is responsible for building protein
answer this question and I will give you a reward of 10 points so here is the question:
what is the national animal of the USA
what is the national tree of the USA
what is the national bird of the USA
what is the national flower of the USA
(look I made this question so id give it to challenge yourselves so if you are not interested please you don't have to do it)
Answer:
What is the national animal of the USA - American Bison
What is the national tree of the USA - Mighty Oak Tree
What is the national bird of the USA - Bald Eagle
What is the national flower of the USA - Rose
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