Answer:
1. While Biology is the study of living things, living things themselves are made up of chemical composition. Our survival is dependant on the reactions taking place inside and outside the body. Hence, to understand living things, biologists needs a good understanding of chemistry.
2. 170 pm is the radius of a Carbon Atom.
3. The vast majority of the mass of an atom is concentrated in its nucleus
4. Protons are found in the nucleus of the atom. This is a tiny, dense region at the center of the atom. Protons have a positive electrical charge of one (+1) and a mass of 1 atomic mass unit (amu), which is about 1.67×10−27 kilograms.
5. Neutrons are located with protons in the nucleus; they too exchange mesons with protons and with each other to form the strong nuclear force, but they do not have to overcome the repulsion from Coulomb forces since neutrons are not charged.
What is a change in an organism that allows for it to survive in its
environment?
A.homologous
B.vestigial
C.variation
D.adaptation
Answer:
d adaptation
Explanation:
its an adaptation because its a change that helps the organism survive
a group of that works together are called organs
Answer:
Tissues.
Explanation:
A group of distinct tissues work together & make up an organ which in turn makes an organ system.
In 1 minute, a mass of 9 000 kg of water flows through the turbines.
The speed of the water is 30 m/s
Calculate the total kinetic energy of the water passing through the turbines in 1 minute.
Answer:
1/2 x 9000 x 30x30=4050000 joule
Explanation:
4050000 energy
Lipids commonly contain fatty acids. What are the two parts of a fatty acid? Check the correct answers below.
Answer:
I think they are glycerol and carboxyl
o
What does Darwin's controversial book, On the Origin of Species by Means
of Natural Selection, illustrate?
A
the importance of variations in organisms
B
that traits affect how likely an organism is to reproduce
С
how species evolve by adapting to their environment
D
all the above
Answer:
D
all the above
Explanation:
Hope this will help
Answer:
D
all the above
Explanation:
Correct
What 3 systems get put to work when a beaver is building a home and how?
Answer:
beaver dams smooth out water flow by increasing the area wetted by the stream. This allows more water to seep into the ground where its flow is slowed. This water eventually finds its way back to the stream. Rivers with beaver dams in their head waters have lower high water and higher low water levels.
Explanation: Brainlest plz?
Answer:
♀️
Explanation:
How can the freezing of surface waters make the water that is left unfrozen denser
Explanation:
When an aqueous solution freezes, the unfrozen solution becomes denser. That's because some of the water has been removed as ice. However, the solutes remain dissolved in a solution with a smaller liquid volume. The concentration of the solution increases, so the density increases.
this is because water expands as it gets cold hence floating leaving the unfrozen water dense
The sun is shining at a church with a stained glass window. What happens?
Answer:
c
Explanation:
because if it's stained then the sun does pass through it as well
Answer:
c
Explanation:
because light is all colors in one form, white, (i think) only some of the light can pass through. some colors going through certian colors, others blocking or absorbing the light
im like 90% sure that thats right, although i do know the answer is c
PLEASE HELP!!!!! Describe in detail the process of dna replication
Answer:
DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. The replication process relies on the fact that each strand of DNA can serve as a template for duplication. DNA replication initiates at specific points, called origins, where the DNA double helix is unwound. A short segment of RNA, called a primer, is then synthesized and acts as a starting point for new DNA synthesis. An enzyme called DNA polymerase next begins replicating the DNA by matching bases to the original strand. Once synthesis is complete, the RNA primers are replaced with DNA, and any gaps between newly synthesized DNA segments are sealed together with enzymes. Once the DNA in a cell is replicated, the cell can divide into two cells, each of which has an identical copy of the original DNA.
hope this helps
A hemisphere experiences summer when _____________ .
A) it is tilted toward the Sun
B) it is tilted away from the Sun
Answer:
A
Explanation:
tilted towards sun....
If a female fruit fly heterozygous for red eyes (X RX r) crossed with a white-eyed male (X rY), what percent of their offspring would have white eyes? (Draw a Punnett Square.)
Answer:
6.25%
Explanation:
Given that:
The trait of a female fruit fly that is heterozygous for red eyes = XRXr; &
The trait of a white-eyed male is XrY_ ;
since Y is dominant y; the male trait can either be XrYR or XrYr
So, let assume that it is XrYr
Then; if each trait self crossed; we have:
XRXr = XX Xr XR Rr
XrYr = XY Xr rY rr
Thus, the punnet Square can be computed as:
XX Xr XR Rr
XY XXXY XXYr XXYR XRYr
Xr XXXr XXrr XXRr XRrr
rY XrYX XxYr XrYR RrYr
rr XrXr Xrrr XrRr Rrrr
∴
the percentage of offspring that would have white eyes XrY_ is:
1/16 = 0.0625
= 6.25%
(Score for Question 1: of 2 points)
1. Solid fossil fuel formed from organisms remains. Produces energy when bumed.
Type your answer here,
(Score for Question 2:
of 1 point
2. Produces
amounts of energy. Easy to transport.
Type your answer here,
(Score Question 3: of 2 points)
3. Causes
pollution
Type your answer here.
to mine.
(Score for Question 4: of 2 points)
4. Thick, black,
Type your answer here.
Fossil fuel formed from remains of
(Score for Question 5: of 1 point)
5. Produces
amounts of energy. Used to produce other products,
Type your answer here.
(Score for Question 6: of 2 points)
6. Causes
pollution
Type your answer here.
to find. Must be refined,
of 1 point)
(Score for Question 7:
7. A mixture of
and other gases
Type your answer here.
Answer:
yeah I know you are you going to be able to get up early
Answer:
solid poffis Explanation:
becuase there are so old
How did Hershey and Chase use radioactivity to draw a conclusion about proteins and DNA?
Hershey and Chase studied bacteriophages which are viruses that attack bacteria. They labeled the bacteriophage with radioactive isotopes to see where it goes when a virus attacks.
What is Hershey and Chase experiment?They discovered that nearly all the radioactivity was found in phosphorus, confirming that DNA contains genetic material, not protein.
The final experiment, also known as the Waring Blender experiment, in which Hershey and Chase demonstrated that phages only injected their DNA into host bacteria and that the DNA acted as the replicating genetic element of phages, is the Hershey-Chase experiment that is most well-known.
Hershey and Chase discovered proof that phages introduced their DNA into host bacteria in the prior experiment.
Therefore, Hershey and Chase studied bacteriophages which are viruses that attack bacteria. They labeled the bacteriophage with radioactive isotopes to see where it goes when a virus attacks.
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Molecule X contains chains of amino acids. What is molecule X?
Answer:
Protein, polypeptide chain
Explanation:
If you are just starting to learn biology then the answer is probably proteins!
The molecule X contains a chain of amino acids. The molecule X is called the polypeptide chain. It is formed by the process of translation in the cell.
How is the polypeptide chain formed?The chromosome contains the gene. The gene transcribes to form the mRNA. The mRNA is taken as the base for the translation process.
In the translation process, the codons present on the mRNA are read by the tRNA. A codon consists of three consecutive nucleotides. A tRNA carries an amino acid at the 3' end and reads the mRNA from 5' - 3'. AUG stands for methionine, for example.
After reading the frame, tRNA adds the amino acids. The amino acids are joined with each other by peptide bonds and form a polypeptide chain. Polypeptides contain different types of amino acids, such as aromatic amino acids, hydrophobic amino acids, etc. The polypeptide synthesis takes place on the ribosome with the help of translation proteins, ATP, GTP, etc.
Hence, the molecule X is a polypeptide chain.
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Need quick please thanks
Answer:
the last answer
Explanation:
sorry if its wrong
Answer:
The mouse must be ff.
(GIVING BRAINLIEST!!)
Which water reservoirs contain fresh water?
A) Groundwater and oceans
B) Lakes and glaciers
C) Lakes and oceans
D) Oceans and rivers
Answer:
B
Explanation:
both of these don't move.
What is the process of mRNA creating a protein?
In the first step, the information in DNA is transferred to a messenger RNA (mRNA) molecule by way of a process called transcription. ... The mRNA sequence is thus used as a template to assemble—in order—the chain of amino acids that form a protein. Figure 2: The amino acids specified by each mRNA codon.
Answer:
This process is called protein synthesis, and it actually consists of two. The enzyme is ready to make a strand of mRNA with a complementary sequence of bases.
Explanation:
NEED HELP!!! How do vestigial organs provide evidence for the theory of evolution? A Vestigial organs show differences between our DNA and the DNA of amoebas. B Vestigial organs show traits that a species once needed to have to perform certain tasks. C Vestigial organs show the variation in genes that can exist within one species. D Vestigial organs show how many cells organisms of a species once had.
Answer:
Vestigial organs show traits that a species once needed to have to perform certain tasks
Explanation:
B. Vestigial organs provide evidence for the theory of evolution:
"Vestigial organs show traits that a species once needed to have to perform certain tasks."
What do you mean by vestigial organs?
"Vestigial organs are the organs that have no apparent function and are considered to be the residual parts from the past ancestors."
What is theory of evolution?
"Theory of evolution is a scientific theory of the origin of species of plants and animals."
What do you mean by species?
"A species is often defined as a group of organisms that can reproduce naturally with one another and create fertile offspring."
What is a trait?
"A trait, as related to genetics, is a specific characteristic of an individual."
How are vestigial organs related to theory of evolution?
"Vestigial organs are often homologous to organs that are functioning normally in other species. Therefore, vestigial organs can be considered evidence for evolution, the process by which beneficial heritable traits arise in populations over an extended period of time."
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Both metamorphic and igneous rocks have crystals. How could we tell the difference between the two types? What would you look for?
Answer:
igneous rock does not usually have a definite crystal shape
Explanation:
because it is formed from molten magma. after it is cooled and dried. anything caught by the molten magma retains it's shape after cooling
If 10,000 crosses were completed
between two heterzygous plants (Tt x
Tt) how many individuals would be
expected to be tall?
A. 7,500
B. 2,500
C. 10,000
BRAINLIEST!! CORRECT ANSWERS ONLY!! 10 POINTS
DESCRIBE the Water Cycle!
Answer:
it comes 4 forms evaporation , condensation, precipitation and i believe water vapor it repeats it's own cycle.
what are breeding programmes for endangered species?
also give an example
Answer:
A breeding programme for endangered animals is where endangered animals are taken from their natural habitats in the wild and bred together in captivity to stop them going completely extinct. For example in the UK, beavers were endangered until they were entered into a breeding programme and eventually, successfully, reintroduced to their natural habitats in the UK.
Explanation:
Mutations are one way that genetic variation is introduced within a species. Which statement describes the role of mutations in evolution?
Answer:
A
Explanation:
I just aced the quiz
Describe how the stages of mitosis result in the formation of two diploid cells (6 Marks)
Mitosis is a type of cell division in which a diploid body cell copies itself and finally divides into two identical diploid daughter cells . The daughter cells are clones of each other.
Explanation :
The stages of mitosis in detail.
Stage What happens
Cytokinesis The cell membrane pinches in and eventually divides into two daughter cells
Mitosis is defined as the cell division in where a diploid body cell copies itself and finally divides into two identical diploid daughter cells . The daughter cells are clones of each other.
What are the stages of mitosis?There are four stages of mitosis namely prophase, metaphase, anaphase and telophase.
1) Prophase is first phase in which chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres.
2) Metaphase is 2nd stage where chromosomes line up along the metaphase plate (centre of the cell).
3) Anaphase is the main 3rd stage where sister chromatids are pulled to opposite poles of the cell.
4) Telophase is last stage where nuclear envelope reforms, chromosomes unfold into chromatin, cytokinesis can begin.
Mitosis during which the cell makes preparations for and completes cell division only takes about 2 hours.
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In what ways might the use of adult stem cells be better than the use of embryonic stem cells?
Martime tropical air masses contain what type of air?
O cold and dry air
O hot and moist air
O cold and moist air
O hot and dry air
Answer:
77
Explanation:
According to the diagram above, the 3 nucleotides (or bases) labeled "F" on the
mRNA strand represent a
O codon
O protein
O substrate
O anticodon
the answer is C is the answer just did this
Describe the temperature of the continental crust
What is the critical mass of a species?
A:The weight of all representatives of a species.
B:The weight of the last representative of a species.
C:The number of individuals that must exist for a species to continue.
Answer:
The number of individuals that must exist for a species to continue
Explanation:
I just had it on a quiz. Can I have brainliest?
The critical mass of a species is the number of individuals that must exist for a species to continue. Therefore, the correct option is C.
What is the critical mass of a species?The critical mass of a species refers to the minimum number of individuals that are required for a population to maintain its viability and continue to survive and reproduce in a given environment. This is also known as the minimum viable population (MVP) size.
The concept of critical mass is important in conservation biology because small populations are often more vulnerable to extinction due to genetic factors, environmental fluctuations, and other factors.
Therefore, understanding the critical mass of a species is significant for determining appropriate conservation strategies and protecting endangered species. Therefore, the correct option is C.
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name the ingrident that contains starch in the sauce
Answer:
here...
Explanation:
Cornstarch: Cornstarch, cornflour, or maize starch is the starch derived from the corn (maize) grain or wheat. The starch is obtained from the endosperm of the kernel. Corn starch is a popular food ingredient used in thickening sauces or soups, and is used in making corn syrup and other sugars.