Answer:Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin.
Explanation:
What cell structure controls all life processes for the cell?
1. Cell Membrane
2. Cytoplasm
3. Vacuole
4. Nucleus
Answer:
4
Explanation:
The nucleus controls all of the cell's activities, such as growth and metabolism, using the DNA's genetic information. Within the nucleus is a smaller structure called the nucleolus, which houses the RNA (ribonucleic acid).
Which evolutionary mechanism increases inheritable variations
Recombination of genes
Bottleneck ig of genes
Gene flow
Genetic drift
Answer:
Recombination Of Genes
Explanation:
Recombination of the gene's evolutionary mechanism increases inheritable variations, hence option A is correct.
What are genetic variations in a population?Gene flow, recombination, and mutation are mechanisms that enhance genetic variety. There are more mechanisms that work to promote genetic diversity, but fewer that work to reduce genetic diversity.
Demographic bottlenecks tend to decrease genetic diversity by intensifying genetic drift, but because genetic drift is random and has local impacts owing to recombination, mutation, and selection, the overall impact may vary along the genome.
Because it introduces new variety into the population, the mutation is the only mechanism of evolution mentioned that increases the amount of genetic variation. Genetic drift is the haphazard loss of genetic variation over time.
Therefore, option A is correct.
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HELP ME PLEASE I HAVE TO TURN IT IN NOWW !!! Pleaseee
Answer:
I think, (Not 100% sure, but i think its H
Explanation:
According to the base-pairing rules for DNA, which of the following statements
NOT true?
A always pairs with T
C always pairs with G
T always pairs with G
T always pairs with A
Answer:
T always pairs with A
Explanation:
I think so I'm super sorry if its wrong :)
According to the base pairing rule, guanine always forms a bond with cytosine, while adenine always pairs with thymine, T is not paired with G, hence option C is correct.
What is base-pairing in DNA?Because it is RNA, there is no complementary base pairing between the bases adenine and thymine in DNA. Uracil, which has a structure remarkably similar to that of thymine, is present in place of thymine.
Base pairing rule, guanine always forms a bond with cytosine, while adenine always pairs with thymine structure of DNA is created by the binding of these base pairs
Although they keep the two strands of DNA together, they are not strong enough to withstand replication.
Therefore, the base pairing rule, guanine always forms a bond with cytosine, while adenine always pairs with thymine, hence option C is correct.
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3. Autotrophs that convert light energy into chemical energy is called
a. photoautotrophs
b. heterotrophs
c. chemoautotrophs
d. omnivores
Answer:
A) Photoautotrophs
Explanation:
Tbh Im not entirely sure but photo means light and it seems like the most likely answer
Please help It is making me cry
Answer:
What are you supossed to be doing
Explanation:
Answer:
Can you give me the answers?
Explanation:
17. Which of the following BEST describes the concept of reclamation? (1 point)
O creating new, habitable land out of riverbeds
O clearing naturally grown forests
O using microorganisms to restore a polluted area
O using a natural resource over again
Scientists are studying the bacteria living in termites because they want to
genetically engineer......
Bacteria that can resist pests on crops.
Bacteria that can create ethanol from left over plant material.
Bacteria that create a vaccine.
Bacteria that create antibiotics.
Answer:
B. this is why Those bacteria may contain genes that will help convert plant material to ethanol. so B. and if it's wrong then sorry but if it's right u welcome ;)
Bacteria that can resist pests on crops.
The following information should be considered:
In the case when the scientist should studying the bacteria that lived the termites so it should resisted the pest on the crops. These kind of bacterias should comprise of genes that would helps transform plant material to ethanol.Learn more: https://brainly.com/question/5303391?referrer=searchResults
How does industrial gases pollute atmosphere explain?
Industrial gases contains carbon dioxide.
Such as Dust, smoke released from industries caused by air pollution
Crossing over occurs during meiosis and leads to changes in the chromosomes. What type of chromosomes does crossing over produce?
1. Chromosomes containing DNA from two different parental chromosomes
2. Chromosomes identical in genetic makeup to the parental chromosomes
3. Chromosomes containing more genes with non recombinant chromosomes
4. Chromosomes carrying genes from one parent
Answer:
1.
Explanation:
because the DNA is being mixed up while crossing over
Crossing over occurs during meiosis and leads to chromosomes containing DNA from two different parental chromosomes, hence option 1 is correct.
What is meiosis?New allelic combinations are created in the daughter cells as a result of the exchange of genetic material between non-sister chromatids of homologous chromosomes during meiosis.
Homologous chromosomes couple along their lengths during meiosis, one from each parent. At locations known as chiasma, the chromosomes overlap.
The chromosomes split and reunite at each chiasma, exchanging part of their genes in the process. Genetic diversity comes from this recombination.
Therefore, the genetic complement in each daughter cell at the end of meiosis is best described as a haploid set of chromosomes resulting from chromosomal recombination between the parents.
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I need help on question
Answer:
what question??
Explanation:
HURRYYY
This bowling ball is rolling at a rate of 19.5 msec19.5 msec. An additional force of 33 Newtons is applied in the direction the ball is rolling.
What effect would this added force MOST LIKELY have on the ball's motion?
The ball's velocity will increase.
The ball's velocity will decrease
The ball's velocity will remain the same.
The ball's direction will change.
What kind of organisms are rotifers?
multicellular
vertebrates
photosynthetic
unicellular
Answer:
Multicellular
Explanation:
they live in fresh water ponds and feeds off of some single cellular bacteria and organism.
Condensation: the ______ off of ______ in the air in the ______
List the cell organelles involved in energy generation for the cell.
Answer:
Mitochondria are tiny organelles inside cells that are involved in releasing energy from food. This process is known as cellular respiration. It is for this reason that mitochondria are often referred to as the powerhouses of the cell.
What materials are needed for photosynthesis to occur?
Answer:
To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight
Explanation:
I hope this helps :)
As DNA is unzipping this enzyme comes in and begins synthesizing mRNA
A. RNA primase
B. RNA polymerase
C. DNA primase
D. DNA polymerase
What do you call a process in which cells and organisms produce other cells and organisms of the same kind
A. reproduction
B. oxidation
C. respiration
D. perspiration
Answer:
A. reproduction
Explanation:
X- it's not oxidation because oxidation is just a reaction in which atoms of an element lose electrons
X- it's not respiration because it's literally just taking a breath; breathing
X- it's not perspiration because perspiration is just sweating
✔- reproduction is making copies of the same kind.
¹ex.
fish + fish = another fish with both genetics from mom and dad, looking like a copy of them
What is the chloroplast?
where photosynthesis takes place
which principle did you apply in step 2 in the Investigation
Answer:
Do not pre-judge
Investigation must be trained and experience will be applied in step 2 in the Investigation.
What are the steps of investigation ?Scientific investigation is a continuous process of investigation which involve different steps to get the answer of a question by using scientific method.
The basic steps includes Investigators must be as independent, must be trained and experienced, all relevant issues must be identified, sufficiently resourced.
All relevant physical and digital evidence must be identified, collected , stored and examined during experiment, documentation must be secured and reviewed, witnesses must be identified.
The analysis of all the results must be gathered during the investigation must be objective oriented and based solely on the facts.
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Why are some genetic traits very common in certain parts of the world (ex:
brown eyes in California, blue
eyes
in Britain, etc.)?
Answer:
you are going to have less diversity in specific areas. they will typically have kids with someone they met where they live, and a person will live where they were born. same how mexican people have the same skin color in Mexico.
Belinda asked her teacher, "What could make turtles go faster?"
Her teacher replied, "I don't know. See if you could find out."
So Belinda did a lot of research in the library and come upon the idea that
eating carrots will make turtles go faster. She decided to test her ten turtles.
She fed five turtles their normal turtle food. She fed the other five carrots. All
the turtles got their normal sleep and water requirements. Then, after a week
she had a turtle race. She kept a record of the times and realized that she was
wrong. In fact, all the carrot-eating turtles finished last.
How was the dependent variable measured?
The amount of sleep the turtles received
How fast the turtles ate
The turtle's speed in the race
How much the turtles ate
Answer:
4
Explanation:
HELPPPP pls I need answer fast like flash
Answer:
and im here hi
Explanation:
was i fast enough?
Five students get sick with a cold after a weekend field trip to the aquarium with their classmates. Which best explains why these students became sick?
A contact with an infected fish
B. contact with an infected person
C. contact with contaminated food
D contact with a contaminated water
Answer:
The answers is B
Explanation:
I just took a test that had this question on it.
B. contact with an infected person
Transmission occurs when an infected person interacts or exchanges bodily fluids with another person. This can happen before the infected individual even realizes they are sick.
After a weekend field trip to the aquarium with their classmates, five pupils catch a cold. Because they may have come into contact with an infectious person, students became ill. Students became sick as a result of B. contact with an infected person
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PLS HELP ME IM STRESSING RIGHT NOW I JUST NEED HELP ON THIS
Which statement accurately describes a mountain ecosystem?
They usually host three or more ecosystems where animals can’t live.
They usually host one ecosystem with a variety of wildlife.
They usually host one ecosystem with a variety of plants.
They host three or more distinct ecosystems.
PLEASE HELP ME! 5TH GRADE SCIENCE!
Wilbur made a prediction that changing the force applied to a race car would affect the distance it travels. Is Wilbur's prediction correct?
A. No, a weak or a strong force applied to the car does not affect motion.
B. No, the force applied to the car needs to be a strong force and cannot change.
C. Yes, the force applied to the car affects the motion.
D. Yes, the car will travel a longer distance when a weak force is applied.
Answer:
C. Yes, the force applied to the car affects the motion.
Explanation:
( PLEASE HELP NEED A REAL ANSWER! )
Individuals with advantageous traits for their environment have a better chance of surviving
than those with less helpful traits. Explain how this is demonstrated in the moth information
above. Use specific information and examples.
Answer:
The moths with darker coloring lived long enough to reproduce and passed the trait on. The light peppered moths were easier for predators to spot on the dark soot covered trees so they died first.
Explanation:
ILL GIVE BRAINLY PLS IM BEING TIMED
How are mountains formed?
by plateaus caving in
by land masses being eroded
by Earth’s crust being uplifted
by rain carving out an area of land
Answer:
Earth’s crust is pushed up in big folds or forced up or down in blocks. So your answer is "By earth's crust being uplifted." Please mark as brainliest, hope this helps!
En un cruce entre peces naranjas y peces grises se obtiene una generación (f1) de 50% peces grises . Realice el cruce y explique lo ocurrido dato: el color naranja es dominante sobre el color gris
Answer:
Uno de los progenitores es heterocigoto para color naranja (Nn) y el otro parental es homocigoto recesivo para gris (nn). Al haber una cruza entre un homocigoto recesivo y un heterocigoto, la 50% de la progenie expresa color naranja (Nn), mientras que el otro 50% expresa color gris (nn).
Explanation:
Datos disponibles:
Cruce entre peces naranjas y peces grises50% de la F1 son peces grisesNaranja dominante sobre grisPodemos nombrar el alelo dominante para color naranja N, y al alelo recesivo para color gris n.
Para que en un cruce entre dos fenotipos distintos, el 50% de la primer camada exprese uno de estos fenotipos, entonces uno de los parentales debe ser heterocigoto, mientras que el otro parental debe ser homocigoto recesivo. De esta forma 50% de la primera generación expresara uno de los fenotipos, mientras que el otro 50% expresará el otro fenotipo.
Supongamos que uno de los parentales lleva el genotipo Nn, y el otro parental es nn.
Cruce:
Parental) Nn x nn
Gametas) N n n n
Fenotipos) Naranja Gris
Cuadro de Punnett) N n
n Nn nn
n Nn nn
F1) 2/4 = 1/2 = 50% de la progenie tendrá genotipo heterocigoto, Nn
2/4 = 1/2 = 50% de la progenie tendrá genotipo homocigota recesivo,
nn
50% de la progenie será color naranja (Nn)
50% de la progenie será color gris (nn)
Can you list some facts about Food webs.
Answer:
A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass.
Explanation: A food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains. Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem.
