Answer:
Both are true; the second is part of the cell theory.
Answer:
false
Explanation:
Organelles make up the cell
Which of the following is not a layer of hair?
Group of answer choices
Cuticle
Root
All the above are layers of hair
Cortex
Medulla
Answer: the root is not a referred to as a layer of the hair
Explanation: Medulla, Cortex, and cuticle are 100% layers but the root doesn’t seem to be one
Fossils of a species of bear are found in layer 5. Which layer is most likely to
have organisms that lived at the same time as the bear species?
layer 4 brainliest would be appreciated
Explanation:
This is based on relative dating method of layers of rock or fossils. The relative dating method is based on the fact that the older the layer of rock or fossils the deeper it will be situated. The more older the more deeper or conversely the more younger, the less will be the depth of the layer of rock or fossils. Here layer 8 is the deepest layer, so it would possess rock layer with embedded fossils which is the most oldest. Layer 1 is the most superficial layer of rock and would contain fossils which is the most youngest. The species of bear are found in layer 5. Hence the immediate layer covering it is the 4th layer of rock. So, any fossils embedded in layer 4 would belong to the nearest possible time of existence of the b
Fossils of a species of bear are found in layer 5, so the layer that is most likely to have organisms that lived at the same time as the bear species is layer 4, which is present in option A.
What are fossils and rock layers?Fossils are the remains or traces of organisms that lived in the past, and they are often found in sedimentary rock layers. When an organism dies, its remains may be buried by sediment, and over time, the sediment may harden into rock, preserving the remains in the process.
Fossils can also be formed when an organism leaves behind a trace, such as footprints, which are preserved in the sediment and eventually turned into rock. So the fossils of layer 5 are similar to those of layer 4, as they both lived in the same environment.
Hence, fossils of a species of bear are found in layer 5, which is the same as the bear species, which is layer 4, which is present in option A.
Learn more about the fossils and rock layers here.
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The mechanism through which a parents gene is turned off, through the attachment of a methyl group to that parent's DNA is called :
A) methylation
B) mutation analysis.
C) cross contamination.
D) spermatogenesis or oogenesis.
Answer:
the answer is a methylation
Explanation:
why some bacteria stain positive and some stain negative?
Answer:
Due to differences in the thickness of a peptidoglycan layer in the cell membrane between Gram positive and Gram negative bacteria, Gram positive bacteria (with a thicker peptidoglycan layer) retain crystal violet stain during the decolorization process.
Explanation:
I looked it up.
What two things make blood pressure? *
A. pressure caused by contraction of heart ventricle and pressure exerted on blood by
walls of blood vessels
B. pressure caused by contraction of heart atrium and pressure exerted on blood by walls of blood vessels
C. pressure caused by stressful workload and pressure exerted by teachers
D. pressure caused by contraction of heart ventricle and pressure due to gravity
Answer:
I think it's A, I am not sure
Explanation:
What do tuberculosis, HIV, and malaria all have in common?
Group of answer choices
A. They all can be spread through body fluids, such as blood
B. They all respond to antibiotics.
C. They are all spread by parasites.
D. They are all non-transmissible diseases.
Answer:
"B.) They all respond to antibiotics." Is the correct answer.
Explanation:
Tuberculosis cannot be spread through blood, it is an airborne illness.
Malaria is spread through mosquitoes
They are all Transmissible diseases.
So, the only one that fits this question is B.
1. Water is the only substance that exists in nature as a solid, liquid, and gas
at Earth's
Put the following events in the order that they occur for a digital recording to become sound waves through a speaker
(1)The electrical signal moves through a voice coil
(2)The voice coil produces a magnetic field
(3)Changing the magnetic field pushes and pulls on the diaphragm
(4)Sound is encoded on a digital recording
The diaphragm vibcates to produce sound waves
(5)The digital recording plays the sound as an electncal signal
Put the number in orders
———————————
Answer:
1) sound is encoded on a digital recording as an electrical signal.
2) the digital recording plays the sound as an electrical signal.
3) the electric signal moves through a voice coil
4) The voice coil produces a magnetic field.
5) changing the magnetic field pushes and pulls on the diaphragm.
1. Chargaff’s rule states that the amount of _______ in DNA is always roughly equal to the amount of thymine, and that the amount of guanine in DNA is always roughly equal to the amount of cytosine.
2. The outside of the DNA double helix is made of alternating groups of deoxyribose sugars and _______.
3. The DNA double helix is _______, meaning that the two strands run in opposite directions.
4. What's x-ray crystallography?
5. Explain how Rosalind Franklin's x-ray crystallography work helped Watson and Crick in their quest to determine the physical structure of DNA.
6. What did Watson, Crick, and Franklin discover about the structure of DNA?
7. How did Watson, Crick, and Franklin's work reiterate Chargaff's findings?
1. adenine
2. phosphates
3. antiparallel
4. X-ray crystallography is a technique used to learn more about the three-dimensional structure of biological molecules. In x-ray crystallography, a molecule (for example, DNA) is crystallized. Then, x-ray beams are directed onto the molecular crystal. The pattern of diffraction, or bending, of the x-rays provides information about the physical properties of the molecule. Rosalind Franklin used x-ray crystallography to investigate the three-dimensional structure of DNA.
5. Watson and Crick were interested in learning more about the physical structure of DNA. They had come up with several hypotheses about how DNA could be structured, but they needed more concrete evidence of the molecule's structure. Rosalind Franklin's Photo 51 provided important information to Watson and Crick as they worked on a model of the three-dimensional structure of DNA.
6. Photo 51 confirmed that DNA is a double helix. Watson and Crick's model of DNA included that it is antiparallel, and that each base pair is held together by hydrogen bonds. The DNA chain is comprised of an outer backbone alternating between the sugar deoxyribose and phosphate groups. The base pairs, which are held together by hydrogen bonds, are located on the inner portion of the double helix.
7. Chargaff found that the number of adenine nucleotides was always roughly the same as the number of thymines, and the number of cytosines was about the same as the number of guanines. This provided the insight that in the DNA double helix, A selectively bonds with T, while G bonds with C. This explains why Chargaff consistently found that the number of As and Ts, and the number of Cs and Gs, were the same in his studies.
Answer:
adenine
phosphates
antiparallel
X-ray crystallography is a technique used to learn more about the three-dimensional structure of biological molecules. In x-ray crystallography, a molecule (for example, DNA) is crystallized. Then, x-ray beams are directed onto the molecular crystal. The pattern of diffraction, or bending, of the x-rays provides information about the physical properties of the molecule. Rosalind Franklin used x-ray crystallography to investigate the three-dimensional structure of DNA.
Watson and Crick were interested in learning more about the physical structure of DNA. They had come up with several hypotheses about how DNA could be structured, but they needed more concrete evidence of the molecule's structure. Rosalind Franklin's Photo 51 provided important information to Watson and Crick as they worked on a model of the three-dimensional structure of DNA.
Photo 51 confirmed that DNA is a double helix. Watson and Crick's model of DNA included that it is antiparallel, and that each base pair is held together by hydrogen bonds. The DNA chain is comprised of an outer backbone alternating between the sugar deoxyribose and phosphate groups. The base pairs, which are held together by hydrogen bonds, are located on the inner portion of the double helix.
Chargaff found that the number of adenine nucleotides was always roughly the same as the number of thymines, and the number of cytosines was about the same as the number of guanines. This provided the insight that in the DNA double helix, A selectively bonds with T, while G bonds with C. This explains why Chargaff consistently found that the number of As and Ts, and the number of Cs and Gs, were the same in his studies.
Explanation:
this is the answer Pennfoster gave me
Examine the pattern of the wave shown. What is true about the amplitude and wavelength of the wave when the pattern changes?
The amplitude of the wave increases while the wavelength decreases.
Wavelength is the distance between one crest or trough to the next and amplitude is the height of the wave from the point of equilibrium.
match each term to its definition
Answer:
Solar Wind --> a stream of charged protons and eletrons
Solar Prominence --> A violent explosion
Gamma Ray Proton --> energy released
<3 * hope this helps! * <3
Answer:Solar Wind --> a stream of charged protons and eletronsSolar Prominence --> A violent explosionGamma Ray Proton --> energy released
Explanation:
Just a reminder to take a break! Your brain is hurting and you need some water! Use this app to understand not to cheat too!
Answer:
THX
Explanation:
Your mind needs to rest
Natural selection is affected by which three factors? A. reproduction B. evolution C. variation D. overproduction E. mechanism F. competition
Natural selection is affected by evolution as three factor. The correct options are A, B and C.
Thus, Natural selection results in the transmission of advantageous genetic variants through reproduction.
As a result, a new generation of organisms emerges that has a higher chance of surviving and reproducing.
For instance, giraffes have an edge over other species due to their long necks, which have allowed them to graze on leaves that others cannot reach.
Because they had access to greater food, those with longer necks were able to breed and pass on the trait to the next generation. Less likely to survive and pass on their genes would be those with shorter necks and access to less food.
Thus, Natural selection is affected by evolution as three factor.The correct options are A, B and C.
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B vitamins and vitamin C are water soluble vitamins.
O A.
True
B.
False
Answer:
A. TRUE
Explanation:
"B-complex vitamins and vitamin C are water-soluble vitamins that are not stored in the body and must be consumed each day." says google
Which of these is not an environmental effect of building dams?
A. increased water temperature
B. soil erosion upstream
C. weed growth downstream
D. reduced fertility downstream
Please help!!! Am taking unit test!! Should give 23 points!
Answer:
C
Explanation:
In the 2 sentences or less how can we solve global warming
Explanation: We can turn of the lights when were not using them and use bike rids instead of car rides use solar panels.
Contaminated water called leachate from _____ can pollute groundwater.
Group of answer choices
A.solid waste incinerators
B.bioplastics
C.compost bins
D.sanitary landfills
E.recycling centers
Answer:
option D
Explanation:
Infusion is formed by the leaching of water in waste in a landfill along with the transfer of certain contaminates. Contaminated water called infusion from sanitary landfills can pollute groundwater.
What is sanitary landfill?Sanitary landfill is a landfill where waste is decomposed into biologically and chemically inert materials in a setting which is isolated from the environment.
There are the following types of landfills:
Municipal solid waste landfills.Industrial waste landfills.Hazardous landfills.Contaminated water called infusion from sanitary landfills can pollute groundwater.
Thus, the correct option is D.
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Help please I need a. and b. For number 2
Answer:
they are both dominant
Explanation:
because of the capital P overrides tge lowercase p
Answer:
PP = purple and Pp = purple
Explanation:
Purple is dominant in both genotypes.
Mining leads to a reduction in
because it destroys
by uprooting forests and demolishing mountainsides.
Answer:
Your answer is rainfall.
Answer:
biodiversity
habitats
Explanation:
plato
Science has had no negative impacts on society.
Please select the best answer from the choices provided
OT
OF
Answer:
false
Explanation:
Answer:
the answer is false
Explanation:
What odd thing happens at Mercury’s perihelion to the sun ?
The cartilage on the ends of long bones serves which of the following functions? *
Answer:
Articular cartilage also serves to cushion the ends of long bones against impact. It does not attach tendons. Red blood cells are made in the bone marrow and the synovial membrane is made of a different type of connective tissue.
The difference between a habitat and a niche is that a niche is
A. The specific functional role of an organism
B. The organism's preferred habitat
C. The kind of place an organism occupies.
Answer:
A. The specific functional role of an organism
Explanation:
A habitat is the general place where an organism lives and a niche is the range of physical and biological conditions in which a species lives and the way the species obtain what it needs to survive and reproduce.
Sam doesn't feel like he's being treated fairly by his parents. He wants to stay out
later, but they want his curfew set at 10PM. What is causing this conflict?
dispute over resources
differing values
Opower struggle
Omiscommunication
Answer:
c. power struggle
hope this helps
What are the different possible gametes for AABBDd?
Answer:
8
Explanation:
Diffrent types AaBbDd
How do the cells and organs of the Skeletal and Muscular system work together?
Answer:
A tendon
Explanation:
Tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A tendon serves to attach the bone to muscle
which pattern of change in living things does the fossil record show?
i think this is helped you )))
Given the following phylogenetic tree, which evolutionary event occurred most recently?
A.) development of different forms of symmetry.
B.) development of tissues.
C.) each of these traits evolved at the same time.
D.) protostome and deuterostome development.
Answer:
Option-D
Explanation:
A phylogenetic tree is a diagrammatic representation which is constructed in to show the common ancestors at the base of the tree and the branches represent the new species.
The phylogenetic tree which is constructed based on the traits evolved during evolution is known as a cladogram. In the given question, the cladogram represents the evolution of various groups of the organism from a common ancestor based on the traits evolved.
The trait which was evolved earlier is present at the base like the development of tissues while the most common trait is present at the top which is the development of deuterostome and protostome.
Thus, Option-D is the correct answer.
Father
B b
Mother
B
b
BB
Bb
Bb
bb
B=dominant
b = recessive
The gene for brown hair (B) in Goats
Consider the possible genotypes of the offspring of two heterozygous brown goats. The ratio of brown to white
offspring in this case would be
A)
1:3.
B)
2:2
3:1
D)
3:4
Answer:
C. 3:1
Explanation:
Bb is still dominate because the bigger letter takes over the smaller letter.
Theres 3 dominate genes (Brown) and 1 recessive (White)
A newborn child was brought to the hospital nursery before he was marked with his parents' names. The hospital workers must use what they know
about genetic outcomes to determine whom the child belongs to. They use his traits to help them. The baby has freckles (F dominant), and attached
earlobes (I recessive). They believe that the baby most likely belongs to a couple in which the man has attached earlobes but no freckles. It is known that
the woman is heterozygous for freckles and earlobe type.
Complete the Punnett square below to determine the probability that the child belongs to this couple. List the possible combinations of the father's
alleles across the top and the possible combinations of the mother's alleles down the left side. Then write your answer in the space below. Include a
brief statement explaining how you reached your answer.
Answer:
Explanation:Which of the following equations are balanced correctly?
2Ag2O → 4Ag + O2
Zn + HCl → ZnCl2 + H2
Cu + H2O → CuO + H2
2C4H10 + 13O2 → 8CO2 + 10H2O
