Other than enzymes, what else can be used to separate the DNA strands?
Answer:
The enzyme responsible for separating the two strands of DNA in a helix so that they can be copied during DNA replication.Explanation:
the correct sequence of events in meiosis
1
What is the original source of energy for most ecosystems?
A.grass
B.humans
C.the sun
D.heat
Answer:
C. The sun
Explanation:
The sun provides energy for the plant to do photosynthesis. Since all animal species depend on plants qnd the sun helps the plants, the sun is the original source of energy.
Answer:
C,The sun
Explanation:
the vast majority of energy in food webs originates from the sun
Which of the following occurs first in meiosis?
1. Homologous chromosomes line up in the center of the cell.
2. Chromosomes line up in the middle of each cell.
3. Crossing over between segments of homologous chromosomes.
4. Chromosomes are pulled to opposite poles of the cell.
Answer:
Crossing over between segments of homologous chromosomes.
Explanation:
Crossing over happens during prophase I of meiosis I
Which of the following strands are complementary DNA sequences?
Choose 1 answer:
It's B!!!!!!!!!!!!!!!
Elliptical galaxies form a perfect sphere or an ellipse.
True
False
Answer:
True
Explanation:
A group of billions of stars in space is known as a galaxy. ... Irregular ones do not have specific shape and elliptical galaxies are three dimensional. It has ellipsoidal shape which formed of deformation of sphere and looks like ellipse. Hence, the given statement is true.
How is viral reproduction different from the reproduction of single-celled and multicellular
organisms?
A. The virus depends entirely on a host cell to reproduce.
B. The virus relies on nucleic acids, such as DNA, to reproduce.
C. The virus relies on proteins to reproduce.
D. The virus reproduces very rapidly, but in smaller numbers.
Answer:
A. The virus depends entirely on a host cell to reproduce
Viral reproduction different from the reproduction of single-celled and multicellular organisms because the virus depends entirely on a host cell to reproduce. Thus, option A is correct.
What are the difference between single- celled and multicellular organism?The main difference between single- celled and multicellular organism is that single- cellled organisms are made up only single cell on the other hand multicellular organisms are made up of multiple cells.
Cell theory is a scientific theory that's help to learn how living organisms are made up of cells, that's they are the basic structure unit of all organisms, and that all cells from pre-existing cells.
Prokaryotic Cell
Prokaryotic cells are single-celled microorganisms known to be earliest on earth.
Eukaryotic cell
Eukaryotic cells have a nucleus enclosed within the nuclear membrane and form large and complex organism.
Difference between unicellular and multicellular.
The main difference between unicellular organisms and multicellular organisms is that unicellular organism is unspecialized it means all the body function depends upon only on the single cell and in multicellular organism there is specific cells for specific purposes.
Multicellular and unicellular organisms are perform almost all the life running activities and processes such as respiration, reproduction digestion, breathing, and metabolism.
In unicellular organism division of labour is at the organ level on the other hand in multicellular the division of labour at cellular, tissue, organs and organ system level.
Unicellular organism has simple body organization and multicellular organism have complex body organism.
Therefore,viral reproduction different from the reproduction of single-celled and multicellular organisms because the virus depends entirely on a host cell to reproduce. Thus, option A is correct.
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The process of. Produces a new copy of an organisms genetic information which is passed on to a new cell
what process produces new copy of organisms genetic information?
DNA replication
What will happen to a tide pool itself if star fish are removed from the ecosystem?
Answer:
the ecosystem will be disturbed... the animals feeding on it will be reduced due to lack of food and the animals on which the star fish was feeding will be increased which causes a total imbalance in ecosystem..
Can small carbon compounds be formed into large carbon compounds?
Answer:
ya it can also be the largest compound but it needs alot if pressure
29.
Use the diagram below to answer questions 29 and 30.
Use Note-taking 22-6 to help you identify the five major root structures on the drawing of a
dicot root.
А A.
B
B.
с
C.
D.
D
E.
E
Answer:
The diagram represents the process of enlarging a rectangle using a scale factor of 3. The width of the original rectangle must be:
9 in.
11 in.
12 in.
17 in.
Explanation:
What does it mean for a virus to "infect" a cell?
Tir
11
The virus lands on the outside of the cell and remains there until the cell produces more viruses.
The virus lands on the outside of the cell and eats proteins on the surface of the cell.
The virus lands on the outside of the cell and injects its genetic material into the cell.
The virus lands on the outside of the cell and injects its proteins into the cell.
Answer:
I think the answer is...
the virus lands on the outside of the cell and injects its genetic material into the cells
i'm not sure but this is what I think...
Explanation:
Viruses usually inject their all genetic material into one cell to individual virion contains multiple copies of its fusion protein.
:)))))))))help me plsss
Explanation:
1. The materials are physically combined because all of the materials including the sand, salt, and iron fillings are their own substances and they maintain their original form. This is a mixture and they aren't chemically combined.
2. To separate each of the materials physical means would be used because since they're their own individual substances and have kept their original form they're mixed and not chemically combined.
3. The iron and oxygen atoms in rust are chemically combined because they are no longer individual substances and haven't kept their original form, so therefore they're a chemical combination.
Why is it important that tissues are composed of specialized cells?
5. Most Sex-linked disorders like hemophilia and colorblindness are located on *
Answer:
Either the X or Y chromosome (the sex chromosomes)
Explanation:
Color blindness, hemophilia and muscular dystrophy are three x-linked phenotypes.
Sickle cell anemia is an inherited form of anemia - a condition in which there aren't enough healthy red blood cells to carry adequate oxygen throughout your body.
Normally, your red blood cells are flexible and round, moving easily through your blood vessels. In sickle cell anemia, the red blood cells become rigid and sticky and are shaped like
sickles or crescent moons. These irregularly shaped cells can get stuck in small blood vessels. How does sickle cell anemia affect the blood flow in a human?
Answer:
RBCs are round red blood cells that easily move through blood vessels and carry oxygen with them to provide cells oxygen. In sickle cell anemia, the shape of the red blood cells is like sickles or crescent moons.
These cells occur due to mutation on the gene that produces this protein which results in rigid, sticky cells that can get stuck in small blood vessels and blocks the flow of blood, oxygen to parts of the body.
Why is family history thought to be important and a good predictor of an individual’s disease risk factor?
Because family members most closely represent the unique genomic (DNA) and environmental interactions that individuals experience
Because doctors can determine your family’s risk from your ailments
It is important to know family history so that a doctor can issue the right antibiotic to prevent cancer
So that doctors can know how your 1 st line of defense reacts to antibiotics mi
Answer:
The first answer, Because family members most closely represent the unique genomic (DNA) and environmental interactions that individuals experience. Is right
Explanation:
Please help me with this biology thing.
Answer:
Answer:
1.
a)dd
b) dd
c) 0%
2.
a) 25%
b) 75%
c) 25%
3.
a) 03
b) 0
c) tt
4.
a) FF x ff OR FF x Ff OR FF x FF
b) Because all the children have freckles
I am the Bio-molecule responsible for storing
unused energy and can be used by living
organisms as long term, slow energy.
Answer:
It's LIPID
Explanation:
storing unused energy. Long time storage of energy.
What does a recombination frequency of 50% indicate regarding linkage?
Answer:
Explanation:
A recombinant frequency significantly less than 50 percent shows that the genes are linked. A recombinant frequency of 50 percent generally means that the genes are unlinked on separate chromosomes. The remainder of this chapter focuses mainly on linked genes and recombinants arising from crossing-over.
Answer:
A recombinant frequency significantly less than 50 per cent shows that the genes are linked.
Explanation:
A recombinant frequency of 50 per cent generally means that the genes are unlinked on separate chromosomes.
Action Potential: Relative refractory period
In a neuron, there is a period of time called the absolute refractory period where it is impossible for an action potential to
begin. This corresponds to the change in membrane potential from +30 to -70 mV, or the repolarization phase. Towards the
end of the repolarizing phase, there is a relative refractory period where it is difficult, but not impossible, for another action
potential to begin. Using the time slider function, which of the following segments in the neuron would correspond to a
relative refractory period?
A second action potential can be triggered during the relative refractory phase, but it will need a stronger stimulus to do so than the first time. Refractory times are brought on by the inactivation gate of the Na+ channel.
What Action Potential related to Relative refractory period?The axon has a tougher time producing successive action potentials during this time period, which is referred to as the refractory period, as a result of these transient alterations.
As a result, the refractory period restricts the quantity of action potentials that a certain nerve cell can generate in a given amount of action potentials time.
If enough powerful stimuli are applied to the neuron after the absolute refractory time, Na+ channels start to recover from inactivation and the neuron may respond once again by generating action potentials.
Therefore, A stimulus that is stronger than usual is required to generate neuronal activation during the relative refractory period.
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answer sheet of Grade 10 science what I have Learned module 2 Quarter 3
The region of the stem nearest the seed.
Answer:
B. Hypocotyl
Explanation:
Help melee please...
Answer:
25%
Explanation:
The image is the punnet square. :)
Hurry Timed!!! Help pls!!! 20 points!!!
Answer:
This fern has roughly 630 pairs of chromosomes or 1260 chromosomes per cell. The fact that these cells can accurately segregate these enormous numbers of chromosomes during mitosis is truly remarkable.
Explanation:
Leaf cell has 21 chromosomes.
You are breeding alligators to be reintroduced in the wild. One of the female alligators is albino. Would it be possible to get normal colored alligators from this female? Identify the genotypes of each individual and show your work in
the Punnett squares below.
Answer:
It is possible for normal coloured alligators to be produced. If the albino trait is recessive and normal is dominant, the male would need 1-2 dominant alleles to produce a normal coloured alligator. It is also possible for a normal coloured alligator to be produced if albino is dominant and normal is recessive. In this circumstance, the female must be h e t e r ozygous, but the male can be either h o m ozygous or h e t e r o zygous to produce normal coloured offspring.
First punnet square genotypes:
Female - albino
Male - albino/normal (can be either one)
Second punnet square genotypes:
Female - Normal
Male - albino/normal (can be either one)
Which range best describes the possible number of cells in one organism
Answer:
ant to whale
Explanation:
When certain molecules accept and then donate electrons, they also pick up H+ ions in the matrix, then release them into the inter membrane space.
As H+ diffuses back into the matrix through ATP synthase, its passage drives the phosphorylation of ADP to ATP. This process is called.............
A.Chemiosmosis
B.Electron Transport Chain
C. Synthesis of ATP
D.ADP phosphorylation
Why don’t eclipses occur during any other moon phases besides the new and full moon?
Fungi are all eukaryotes that are not animals, plants or protists.
TRUE
FALSE
Check it
Answer:
true
Explanation:
this is it I think.:)