During replication, enzymes called ____________________ untwist the double helix, separating the two parental strands. The point at which the two chains separate is known as the _______________________.
Answer:
During replication, enzymes called helicases untwist the double helix, separating the two parental strands. The point at which the two chains separate is known as the replication fork.
Explanation:
Replication is the process of multiplication of DNA molecules where, from one molecule, two molecules with the same information as the original can be obtained.. Each new replicated DNA molecule has an original strand and a new strand, so replication is semi-conservative.
For replication to occur, the double strand of DNA must be separated, a process that requires the participation of a group of enzymes called helicases. The helicases are responsible for breaking the hydrogen bonds between the complementary bases of one strand and another.
The DNA strands, when separated, form a zipper-like image, and the point of separation between the two is called the replication fork.
The study of genes is called genetics.
The correct answer is During replication, enzymes called helicases untwist the double helix, separating the two parental strands. The point at which the two chains separate is known as the replication fork.
What is replication?Replication is the process of multiplication of DNA molecules where, from one molecule, two molecules with the same information as the original can be obtained. Each new replicated DNA molecule has an original strand and a new strand, so replication is semi-conservative.
For replication to occur, the double strand of DNA must be separated, a process that requires the participation of a group of enzymes called helicases. The helicases are responsible for breaking the hydrogen bonds between the complementary bases of one strand and another.
The DNA strands, when separated, form a zipper-like image, and the point of separation between the two is called the replication fork.
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What is the relationship between a double helix and a chromosome?
Answer:
a chromosome contains many genes. A gene is a segment of DNA that provides the code to construct a protein. The DNA molecule is a long, coiled double helix that resembles a spiral staircase.
Explanation:
Human cells have 23 pairs of chromosomes containing DNA. The chromosomes serve as the structure that holds the DNA. The DNA acts as a complete set of instructions that tells our bodies how to develop.
How do plants change the environment?
Answer:
They give out air and they absorb carbon dioxide
Which variable is being tested in this experiment?
Answer:
The size of the pot as that the only variable that changes
Explanation:
PLEASE HELP
Match the following dna strand to its complementary strand of rna TAC - CCG - AAT -TCG
An Olympian ski jumper uses friction to
stop. This is an example of what type of
energy transformation.
Answer:
Heat energy
Explanation:
When friction acts between two surfaces that are moving over each other, some kinetic energy is transformed into heat energy.
13. What term do we use to describe the maintenance of constant conditions, such
as blood glucose levels, body temperature and water levels, inside the body?
A. Hormonal control
B. Nervous system
C. Homeostasis
D. Endocrinosis
Answer:
C. Homeostasis
Explanation:
"Homeostasis" refers to the process of maintaining the body's equilibrium. The body tries to adjust to different stimuli in order to help it function in normal ranges. For example, when a person is exposed to a cold weather all of a sudden, the person starts to shiver in order to maintain homeostasis. Shivering is a contraction of the muscles that allows the generation of heat.
On the contrary, when a person is exposed to the sun during summer, his body will start to sweat in order to maintain homeostasis. Sweating allows the heat to dissipate from the body thereby lowering the body's temperature.
How does earths rotation help to maintain its temperature? Please help!!!
Answer:
Earth returns an equal amount of energy back to space by reflecting some incoming light and by radiating heat (thermal infrared energy). Earth's average surface temperature is maintained by two large, opposing energy fluxes between the atmosphere and the ground (right)—the greenhouse effect.
what is the term for a charged atom that forms when the numbers of electrons and protons are not equal?
Explanation:
Ion, Ion is a chraged atom or molecule. It is charged because the number of electrons do not equal the number of protons in the atom or molecule
Fossil fuels, such as coal and oil, get their names because they form from fossilized organisms trapped under extreme pressure and heat from the center of Earth. Explain how the model shows the requirements for fossil fuel formation.
Answer:
hey you forgot the model, can you include a link to the model? i can't access it on brainly though so g docs or something like that should be fine.
Food provides molecules that serve as fuel and building material for all organisms. Plants undergo photosynthesis and make their own food. Other organisms, like humans and the horse seen below, are consumers and eat food. How is energy released from food, and what is the importance of ATP? Include the name of the process and the overall chemical equation in your explanation
Answer:
The correct answer is - cellular respiration is the process to release energy from food in the form of ATP.
Explanation:
Food, as we know, is the only source of energy for the body but it requires to converted from the form of what we eat which is carbohydrates, protein, fat into an energy source that cells and the body can use for various functions. The process that converts food into energy is cellular respiration.
Cellular respiration is a set of complex chemical reactions that convert sugars into energy in the form of ATP which is the only currency of energy cell can use. The reaction has three stages glycolysis converts glucose in pyruvate, Krebs cycle releases carbon in the form of CO2 from pyruvate, and electron transport which is oxygen-dependent reaction.
Cellular respiration can be understood by the following chemical equation:
C6H1206 + 6O2 ====> 6CO2 + 6H2O + ATP
From what sources does water evaporate?
Answer:
from precipitation, oceans lakes streams and soil
HELP PLS I WILL GIVE U BRAINLY
Answer:
molecules
Explanation:
we can eliminate salts right away
cations are positively charged ions
anions are negatively charged ions
molecules is a group of atoms that is bonded together
Which pair of words is incorrect?
HELP SOON ASAP HELP HELP HURRY
Answer:
Black bear-carnivore
Explanation:
Black bears are omnivores because they eat berries, plants, and meat. Hope this helped and have a great day/ night! :D
A tiger ran 15 km in 5 seconds. What was the tigers speed?
this is for science wont let me pick the subject
Answer:
speed of tiger = 3 km / sec
or 3000m / s
Explanation:
distance = 15 km
time = 5 sec
speed = distance/ speed = 15 / 5 = 3 km/ sec .
Which of the following coordinate and control immune response?
B lymphocytes
T lymphocytes
antigens
antibodies
Answer:
I think it is antigens but i am just guessing.
Explanation:
i don't know for certain that this is the right answer but regardless have a good day
Please help!!!! Part B
Answer:
1. 5
2. 2
3. 4
4. 1
5. 3
Explanation:
Hope this helps! :)
Whats their contribution to the Theory of Evolution
1. Linnaeus
2. Lamarck
3. Charles Lyell
4. Mary Annings
5. Darwin
Ty
Answer:
Darwin is the correct answer of it
What is Darwin's Theory of Evolution? ... The theory of evolution by natural selection, first formulated in Darwin's book "On the Origin of Species" in 1859, is the process by which organisms change over time as a result of changes in heritable physical or behavioral
I am a metal which can be drawn into thin wires.
l am used in an electric circut. Identify who l am
And my properties
Answer:
copper
Explanation:
The most common material used in electrical circuit and for making electrical wire is copper. The properties of copper is listed below:
Copper has a very good electrical and thermal conductivity.Copper is relatively cheap when compared to other metals.Copper is soft and malleable, that is it can be beaten into sheets without breaking or crackingCopper is ductile, that is it can be drawn into thin wires,Why was the path to discovery of the theory evolution easy or difficult? (Explain)
Chickenpox is a contagious disease caused by the varicella zoster virus. This disease is characterized by an itchy skin rash accompanied by headaches, body aches, and a low-grade fever. These symptoms appear 10 to 21 days after exposure to the virus. After an individual has had the chickenpox, the virus can remain inactive in nerve cells for years and then re-emerge as a painful skin rash called shingles. Based on this information, what best describes the reproductive cycle of the varicella zoster virus? A. lysogenic only, because the virus causes symptoms that primarily affect the skin B. lytic only, because the virus causes symptoms that primarily affect the skin C. neither lytic nor lysogenic, because the virus has immediate and latent effects D. both lytic and lysogenic, because the virus has immediate and latent effects
Answer:
itssssssss D ma'ammm sorry this is longgg
can you help me please?
what does DNA looks like? describe the structure of DNA?
When science alters or clones genes and inserts them into an existing strand of DNA to make a new trait is know as:
O selective breeding
O genetic engineering
O natural selection
O gene therapy
What type of clinical diagnosis can be
made by examining a karyotype?
Answer:
Down syndrome is one (I think)
Explanation:
Clinical cytogeneticists analyze human karyotypes to detect gross genetic changes—anomalies involving several megabases or more of DNA. Karyotypes can reveal changes in chromosome number associated with aneuploid conditions, such as trisomy 21 (Down syndrome).
Only about 10 percent
of the energy from each
level of an energy
pyramid is available to
the trophic level above
it. (The rest is used to
power life processes or
is lost as heat.)
If the primary producers
have 10,000 units of
stored energy, how
much energy would you
expect to be transfered
to first-level, second-
level, and third-level
consumers?
Answer:
First leve consumer: 1,000 energy units
Second level consumer: 100 energy units
Third level consumer: 10 energy units
Explanation:
First level consumer: 1,000 energy units. Second level consumer: 100 energy units. Third level consumer: 10 energy units.
What is trophic level?The group of species in an ecosystem that are at the same level in the food chain is referred to as a trophic level. A food chain has five basic trophic levels, each of which has a different nutritional relationship to the main energy source.
The Sun is any ecosystem's main source of energy (although there are exceptions in deep sea ecosystems). Primary producers, sometimes referred to as autotrophs, receive their energy input from the Sun's solar radiation.
The first trophic level is made up of primary producers. Consumers, also known as heterotrophs, make up the remaining trophic levels; heterotrophs are unable to reproduce.
Therefore, First level consumer: 1,000 energy units. Second level consumer: 100 energy units. Third level consumer: 10 energy units.
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HELPPPP how does the burning of fossil fuels by humans affects the carbon cycle
Answer:
Explanation: by bunning fossil fuel it releases carbon into the air
what can you infer about an average star's brightness and temperature?
Answer:
Stars with a high temperature are blue and bright, while stars with a low temperature are red and dim. For example, Spica is a blue star at approximately 25,000 K with a high brightness, and Barnard's star is a red star at approximately 3,000 Suns with with low brightness.
Explanation:
please give me a heart
Lelilani lives in Hawaii. Most of the rocks she collects for her science experiment are igneous. Why is this true?
Answer:
Igneous rocks form from the cooling and solidification of magma or lava. In Hawaii, there are volcanoes present, which produce magma and lava. Therefore, it makes sense as to why the rocks she collects are igneous.
Explanation:
A type of plant that has cells inside that form long tubes and carry nutrients and water is called _____________.
Question 4 options:
vascular.
non-vascular.
tubular.
mushroom.
Answer:
Vascular
Explanation:
Vascular Tissues consist of long, narrow cells arranged end-to-end, forming tubes. There are two different types of vascular tissues, called xylem and phloem. Xylem is vascular tissue that transports water and dissolved minerals from roots to stems and leaves.
Which of the following tissues does not provide support in flowering plants?
A. Collenchyma
B. Parenchyma
C. Xylem
D. Phloem
Answer: B
Explanation: it says which one does not provide, collenchyma does provide support.
The tissue which does not provide support in flowering plants is parenchyma. The correct option is b.
What is parenchyma?Parenchyma is a type of simple permanent tissue that makes up a major part of ground tissues in plants, where other tissues like vascular tissues are embedded. They are non-vascular and composed of simple, living and undifferentiated cells, which are modified to perform various functions.
The main characteristics of parenchyma are, They are living permanent tissues that can divide at maturity and help in the regeneration and healing of wounds, Parenchyma cells are the foundation of a plant as reproductive cells are parenchymatous, Single parenchyma cells of a zygote can develop into an entire plant. These cells are called “totipotent” cells, Parenchyma cells occur in the form of continuous masses as homogeneous parenchyma tissues e.g. in the pith and cortex of stems and roots, mesophyll of leaves, the flesh of succulent fruits and in the endosperm of seeds.
Parenchyma cells may be associated with other types of cells to form heterogeneous complex tissues such as the parenchyma of the xylem and phloem.
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