Answer:
1. metaphase II - 7.3 pg.
2. prophase I - 14.6 pg.
3. G1 - 7.3 pg.
4. after cytokinesis of meiosis II - 3.7 pg.
5. telophase I before cytokinesis - 14.6 pg.
6. G2 - 14.6 pg.
Explanation:
The cell cycle begins at G1, where all cells in humans (except for the gametes) have 23 pairs of chromosomes, 46 in total, and without any part of the DNA being duplicated. This is the stage in which the cell will have 7.3 pg of DNA.
After G1 comes phase S, which is the phase in which the DNA is duplicated to prepare the cell for the oncoming division; so we can infer that the phase that comes after S, G2, will have twice the DNA the cell had initially: 14.6 pg.
With this amount of DNA, the cell enters the first part of meiosis, in which the homologous chromosomes will be separated into two cells that will each carry on with the second part of meiosis. In prophase I, the cell is just beginning the process of meiosis, so it has 14.6 pg of DNA. In telophase I, the cell still has that amount of DNA because cytokinesis hasn't happened yet, and that is the defining step that ends up actually dividing the cell into two.
Meiosis II begins after cytokinesis I, therefore, the homologous chromosomes have already been separated and each cell has now 7.3 pg. In metaphase II the cell has 7.3 pg, but when cytokinesis of meiosis II ends, the cell will be half the size that was just before, because the sister chromatids are separated - this is where the cell will only have 3.7 pg of DNA.
The cells produced by meiotic cells are gametes, having only 23 chromosomes and the lowest amount possible of DNA.
What type of organism can produce energy from the sunlight?
A. Heterotroph
B. Omnivore
C. Carnivore
D. Autotroph
Answer:
autotrophs
Explanation:
Organisms that can produce energy from sunlight are called autotrophs.
Hope this helped <3
Part1: Compare the relative concentrations (amount of GtC) of at least six (6) components of the carbon cycle
(e.g. The ____ has less GtC carbon than the ______ .)
Part 2: Explain how the total amount of matter is conserved during the carbon cycle.
hint-the earth is a closed system
Answer:
Explanation:
PART 2 : The Law of Conservation of Matter states that matter cannot be created or destroyed. The carbon cycle is an example of the Law because the same carbon atoms are being recycled through the carbon cycle.
Because elements are neither created nor destroyed under normal circumstances, individual atoms that compose living organisms have long histories as they cycle through the biosphere. In this depiction, a carbon atom moves from coal buried beneath the Earth's surface to a power plant and into the atmosphere. It eventually dissolves in water and is taken up by an algal cell, where it is then consumed by a copepod.
What happens to the surface are as the cubes get larger?
Answer:
As a cell grows bigger, its internal volume enlarges and the cell membrane expands. Unfortunately, the volume increases more rapidly than does the surface area, and so the relative amount of surface area available to pass materials to a unit volume of the cell steadily decreases.
Explanation:
I have to find two words for an acrostic poem and it’s about atmosphere and I need a word that starts with R and E?
What is mitosis?
the part of cell division when the chromatids separate
the time in between when cells divide
the part of cell division when two separate nuclei form
cell division when a parent cell divides into four cells
Answer:
the part of cell division when 2 nuclei form.
Explanation:
Answer:
I had took this quiz and had the same question and options, I also got a 100% on the quiz so trust me. The correct answer would be "the part of cell division when two separate nuclei form"
Explanation:
Would a group of alligators that live in a particular wildlife refuge be considered a population or a community? Explain Your Answer.
In scientific notation, a number is expressed as a value between 1 and 10
multiplied by a power of 10 *
True or false
The answer is true
Explanation:
The definition of scientific notation is: The method of writing very large or small numbers as a product of a number greater than or equal to 1 and less than 10 multiplied by a power of 10
Hope this helped!
The given statement about scientific notation is true which states that in scientific notation, a number is expressed as a value between 1 and 10 multiplied by a power of 10 .
What is scientific notation?Scientific notation is defined as a way of expressing numbers which are too large or too small so that they can be easily written in decimal form. It can be referred to the scientific form or the scientific index form or even the standard form.
Base ten notation is used by scientists, engineers as it helps in simplification of arithmetic operations. It contains the significant figures which include all non-zero numbers , the zeroes between significant digits and zeroes which are needed to be significant.
In scientific notation, the base should always be ten. The exponent should be a non-zero integer and it can be either positive or negative.
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Most plants grow in the A horizon true or false
Answer: True
Explanation: A HORIZON- This is the layer that we call "topsoil" and it is located just below the O Horizon. This layer is made up of minerals and decomposed organic matter and it is also very dark in color. This is the layer that many plants roots grow in.A HORIZON- This is the layer that we call "topsoil" and it is located just below the O Horizon. This layer is made up of minerals and decomposed organic matter and it is also very dark in color. This is the layer that many plants roots grow in.
Hope this helps
During osmosis, solvent particles move from an area of ____________ concentration to an area of ____________ concentration. When there is a higher concentration of solvent particles inside the cell, most solvent particles will move ____________ the cell and the cell will ____________. When there is a higher concentration of solvent particles outside the cell, most solvent particles will move ____________ the cell and the cell will ____________.
Answer:
During osmosis, solvent particles move from an area of lower concentration to an area of higher concentration. When there is a higher concentration of solvent particles inside the cell, most solvent particles will move outside the cell and the cell will smaller. When there is a higher concentration of solvent particles outside the cell, most solvent particles will move inside the cell and the cell will larger .
Explanation:
OSMOSIS -: Osmosis is the spontaneous net migration of solvent molecules into a area of higher solute concentration through a selectively permeable membrane in the direction that appears to equalize the concentrations of the solution on both sides. It is possible to produce osmosis to do work.
For several purposes, osmosis is essential for cells. It assists in the movement within and out of the cell of essential materials. By the mechanism of osmosis, the nutrients, water and other solutes pass in and out of the cell.
An example of osmosis happens when a semi-permeable membrane separates a sugar solution and water at the surface. The big sugar molecules of the solution can't move into the water through the membrane. Until equilibrium is formed, at the bottom , small water molecules pass through the membrane.
Solvent particles move from an area of Lower concentration to
An area of Higher concentration
Most of the solvent particles will move outside of the cell and
The cell will become smaller .
Most solvent particle will move inside the cell and
The cell will become Turgid .
Osmosis is the movement of solvent molecules from a region of lower solute concentration ( i.e. high solvent potential ) to a region of higher solute concentration through a semipermeable membrane. When the concentration inside a cell is higher than the concentration ( solvent concentration ) of the environment in which the cell is placed in, the solvent particles will move outside the cell into the environment and this will cause the cell to experience plasmolysis ( shrinking of the cell ). while
When the solvent concentration in the cell is lower than the solvent concentration of the environment in which the cell is placed the solvent particles from the cell will move into the cell causing the cell to become turgid.
Hence we can conclude that the correct answers that fills up the missing spaces are ; Lower, Higher, outside, smaller, Inside and Turgid
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can someone please help me with this question
Answer:
C
Explanation:
Which is the role of the electron transport chain in the process of photosynthesis? A. Cycling electrons between photosystem and photosystem ll B. Adding energy to the electrons that enter photosynthesis C.Carrying electrons from photsystem I1, to photosystem to NADP O D. Removing electrons from the chloroplasts
Answer:
c.
Explanation:
Because youcaring electrons from photosystem II, to photosystem I, to NADP+
I took this test about it hope that helps :D
The role of the electron transport chain in the process of photosynthesis will be carrying electrons from photosystem 1, to photosystem to NADP. The correct option is C.
What is electron transport chain?An electron transport chain is a collection of protein complexes and certain other compounds that donate electrons from electron donors to electron acceptors via redox reactions and couple this electron transfer with the transfer of protons across a membrane.
Photosystems I and II are protein complexes found in the thylakoid membrane.
Their function is to capture high energy electrons from chlorophyll and pass them on to a series of electron carriers before splitting water to form oxygen and hydrogen ions and producing NADPH.
Electron transport contributes to the formation of a proton gradient, which drives ATP production and also stores energy in the reduced coenzyme NADPH.
This energy is used to power the Calvin Cycle, which produces sugar and other carbohydrates.
Thus, the correct option is C.
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Henry’s sister was ver very old. Almost fourteen. She didn’t argue with Henry or mark. In fact, she hardly talk to them at all because she was so old and wise and almost grown up. Her name was Elizabeth. A. First person. B.second person C.third person this is reading by the way
Answer:
Third person.
Explanation:
The narrator uses the term she to address Henrys sister, therefore, he is using third person.
What do you think will happen to the convection currents in the mantle if the interior of Earth eventually cool down?
A student wins a trophy. It is a metal cup on a black plastic base. The student cleans the trophy. She holds one of the metal handles and rubs the rest of the trophy with a dry cloth. Why the plastic base does becomes negatively charged? B) The metal cup does not become charged when she rubs the trophy. Suggest why the cup does not become charged.
Answer:
In this given statement , the plastic base becomes negatively charged because plastic is an insulator . And the metal cup does not become charged because metal is a conductor.
Explanation:
Reason behind , why plastic base becomes negatively charged -: When a plastic base is rubbed with a dry cloth in the metal trophy, electrons are shifted from one material to the other. Thus, the substance that gains electrons (which is the plastic base) becomes negatively charged. thus , the plastic is an insulator , which causes charge (negative ) by rubbing.
Reason behind , why the metal cup does not become charged -: The metal cup is a conductor, and the surplus charge on the metal flows to the person who charges the cup and to the ground so that it is not charged. Thus, rubbing a metal can trigger hand\finger injury because metals generate excess heat in rubbing .
You just went to McDonald's and purchased a Big Mac what type of macromolecule is represented in each of the following?
Answer:
There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids), and each is an important component of the cell and performs a wide array of functions. Combined, these molecules make up the majority of a cell's mass.
i don’t understand the layout and what it’s asking. what is number 1 asking me to label??? i’m very confused please help.
Answer:
For #1 the answer is sucrase
Explanation: because sucrase breaks down sucrose. So the answer for number 2 is sucrose
Four of the six kingdoms are compromised of organisms that contain
eukaryotic cells. Which structure in a cell would give you the BEST
evidence that the cell is eukaryotic? *
O Ribosome
O Genetic material
O
Nucleus
O Cell membrane
Answer:
The best evidence that a cell is eukaryotic is the presence of the cell structure called the nucleus.
Explanation:
The most significant difference between eukaryotic and prokaryotic cells is that the former have a nucleus, where they store genetic information in the form of DNA.
The nucleus of eukaryotic cells occupies approximately the center of the cell and is a structure associated with the endomembrane system. Its function is to control cell activity, and its genetic material is duplicated before cell division.
In prokaryotic cells, in the absence of a nucleus, the genetic material is dispersed in the cellular cytoplasm.
Regarding the other options:
Both cell types, eukaryotes and prokaryotes, have ribosomes, genetic material and cell membrane.
The mutagens that result in cancer damage DNA by
Answer: BRCA1, BRCA2, and p53
Explanation:
If a person has an error in a DNA repair gene, mistakes remain uncorrected. Then, the mistakes become mutations. These mutations may eventually lead to cancer, particularly mutations in tumor suppressor genes or oncogenes.
Which statement illustrates an exception to the concept that the cell is the unit of structure and function of all living things?
A)The cell is a complex chemical factory
B)Viruses contain genetic information but lack other cellular components.
C)lysosomes contain hydrolytic enzymes
D)Cells that possess a cell wall are non-living
Answer:
I think the answer is d, as the cell possess a cell wall are non living
2. What term is used to define when a cell has reached a balanced state?
Answer:
equillibrium
Explanation:
2. How does the gametophyte obtain nutrition?
Answer:
The gametophyte is generally green and photosynthetic, and obtains water and other nutrients from the soil by direct absorption into its cells. It contains no cells specializing in the transport of water and/or nutrients (vascular tissue) and therefore cannot grow so large as to prevent contact between the soil and the majority of its cells.
Answer:
from the soil and energy.
Explanation:
Approximately how many elements accour naturally on earth?
I belive that the elements 1 through 92 occur naturally on Earth, except for elements 43 and 61, although these are only found in very limited concentrations. The elements mostly on the periodic table that accompany uranium are generated only chemically and are classified as transuranium or transuranic components.
PLS HELP ITS AN EMERGENCY PLZZZZ ILL DO ANYTHING PLSS ITS FOR 50 POINTS PLSSSSSS
Which of the following BEST describes the results of the Embargo Act?
Answer:
there are no options but the embargo act of 1897 was a general trade embargo on all foreign nations
Answer:
The United States government closed all trade with Britain.
Explanation:
How does pollution affect marine life? a. Pollution causes a decrease in phytoplankton populations and therefore a decrease in the occurrence of algal blooms. b. Pollution causes destruction of coral reefs, which are important sources of shelter and breeding for marine animals. c. Soaps, detergents, and plastics in the ocean decrease the acidity of ocean water, leading to a decrease in carbonate levels. d. Pollution affects organisms close to the shoreline, but does not affect marine organisms far from the shore.
Answer:
b
Explanation:
According to the question, Pollution causes destruction of coral reefs, which are important sources of shelter and breeding for marine animals.
How does pollution affect marine life?Fish, seabirds, sea turtles, and marine mammals can become entangled in or ingest plastic debris, causing suffocation, starvation, and drowning.
Thus, the option "B" is correct.
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What is one of the most threatened ecosystems in the United States ?
Answer:
Caribbean coral reefs
Explanation:
and unfortunately many more :´(
Nuclear reactions result in tremendous amounts of
a. uranium.
b. energy
C. fission.
d.mass.
Please select the best answer from the choices provided
Answer: b. energy
Explanation:
Which is not a topic of biology?
a. the relationship between fungi and trees
b. the distribution of sand on an ocean floor
c. the chemicals at work in the stomach
d. the speed at which a hummingbird flies
Answer:
B the distribution of sand on an ocean floor
Explanation:
which is one benefit that mangrove trees provide to surrounding coastal wetlands
Answer:
They hold soil in place
Explanation:
took it on edge
20 POINTS!!!! Please help
Answer:
Explanation:
Try using google! slowly you will find your answer!
