Answer:
B
Explanation:
The nuclear envelope is a double-layered membrane that encloses the contents of the nucleus during most of the cell's lifecycle.
What 2 plants in Yellowstone national park declined as a result of the elk population boom?
Food webs and the ecosystems that support them look different in different parts of the world depending on the
Food webs and the ecosystems that support them look different in different parts of the world depending on their habitat conditions.
What do you mean by Ecosystem?An Ecosystem may be defined as a place or area where members of different species or communities live and interact with one other for the purpose of food, shelter, space, or other resources.
Food webs constantly supply energy from one level of organisms to other levels of organisms randomly. It basically depends on the type of habitation present in particular conditions.
The place of producers remains the same for food webs and food chains. The food chain transferred energy in a defined way, rather than food webs.
Therefore, food webs and the ecosystems that support them look different in different parts of the world depending on their habitat conditions.
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the organelles in a cell to the organs in your body.
Answer:
heart , liver , stomach and kidneys
A group of ecosystems that have the same climate and dominant communities is called a
Habitat
True
False
Which parts of a plant are responsible for reproduction? Describe the role that each of them will play
Answer:
Plants can reproduce in two ways:
Vegetative reproduction
Fertilization-based reproduction
Explanation:
What are the names of the cavities that drive blood out of the heart?
PLEASE HELPPPPPPP MEEEEEEEEEEE
Answer:
C and D
Explanation:
The nucleus (the dark blob in the center of the cell) is clearly visible in every cell in the diagram, which means that this is a eukaryotic cell undergoing mitosis. F is, therefore, not a correct answer. The product of mitosis is two genetically identical daughter cells.
Binary fission occurs prokaryotic cells, and does not apply in this case, so A is not a correct answer.
Cells do not undergo $exual reproduction, so B is not a correct answer.
While eukaryotic cells generally do have ribosomes, it is possible to infer that the cells contain ribosomes. However, the ribosomes are not visible in the diagram, so E is not a correct answer.
Where would you find hemoglobin that is relatively o2 poor in a healthy resting person?.
Answer:
Venous blood
Explanation:
Arterial blood is carrying oxygen to tissues.....after delivering the oxygen it is venous blood and has less oxygen.
Could someone PLEASE help me out here
On DNA, a ____________________ base will always pair with a __________________ base.
Answer:
Purine, Pyrimidine
Explanation:
DNA bases consist of two subgroups,
Purines: Adenine and Guanine
And Pyrimidines: Cytosine and Thymine
In genetic material, Adenine bases are always paired with Thymine bases, and Guanine bases are always paired with Cytosine bases. This is why a Purine base will always be paried with a Pyrimidine base.
Fun tip: If you have a hard time remebering which bases are which, a trick I personally use is that Alanine and Guanine are purines, and their code letters (AG) are the symbol for the element silver, which is a type of pure alloy. So AG --> Silver --> Pure --> Purine
If that helps :)
If I know the relative position of the Earth in its orbit around the Sun then I can predict the seasonal pattern because it is a cycle that repeats. For example,
Answer:
7
Explanation:it takes one year for the earth to orbit the earth and there are four seasons.
The image shows the anatomical features of the limbs of a cat and a human What evidence do the structures provide? being.
The similar structure of the limbs indicates that the organisms evolved at the same time.
The similar structure of the limbs indicates that the organisms share a common ancestor.
The similar structure of the limbs indicates that the organisms develop at the same rate.
The similar structure of the limbs indicates that the organisms live in the same habitat.
Answer:
The similar structure of the limbs indicates that the organisms share a common ancester.
Explanation:
The limb structures of human and female limbs are homologous, indicating that they evolved from a common ancestor.
A change in the genetic material of a cell is called a what
O polygenic trait.
O recombination.
O single-gene trait.
O mutation.
Which of the following is true of meiosis?
Choose 1 answer:
It occurs in all cells.
It contains only one cell division.
It does not require interphase to occur first.
It produces haploid cells.
Explanation:
true for meiosis :-
d) It produces haploid cells.
Because meiosis is also called reductional division as it divides the chromosome no. into half .
how was the ocean dumping act implemented
Answer:
Public Law 97-424, enacted in 1983, placed a 2-year prohibition on ocean dumping of any low-level radioactive waste. Public Law 100-688 terminated the dumping of sewage sludge and waste from industrial companies (commencing with the 270th day after November 18, 1988) under certain conditions.
Explanation:
Answer:
placed a 2-year prohibition on ocean dumping of any low-level radioactive waste.
Explanation:
Public Law 100-688 terminated the dumping of sewage sludge and waste from industrial companies (commencing with the 270th day after November 18, 1988) under certain conditions.
hope this helps
how do mutations contribute to genetic variation
Answer: Genetic Change
Explanation:
Mutations contribute to genetic variation by causing new traits to emerge. Mutations happen when there is a change in the DNA of a creature developing in utero. These random changes in creatures are common, although most mutations end up being lethal or inhibiting to the organism. In rare cases, this mutation can prove benificial or helpful, and if the organism reproduces and the trait is passed along, it could become a new branch of genetic variation within the species.
Maintenance of the pH of human blood within a certain range is an example of
(1) chemical digestion
(2) synthesis
(3) respiration
(4) dynamic equilibrium
What organ turns mostly liquid waste into a solid-like waste by absorbing the water?.
According to the Hertzsprung-Russell diagram, which two groups are most likely to contain the stars with the lowest temperatures? A. Supergiants B. Giants C. Main sequence stars D. White dwarfs
Answer:
D
Explanation:
are the final evolutionary stage of low to intermediate mass stars and are found in the bottom left of the HR diagram
Answer: A. Supergiants and C. Main sequence stars
Explanation:
What is the climate of the coniferous forest biome?
long, rainy summers and short, extremely cold winters
no distinct seasons; cold and snowy all year around
short, humid summers and long, harsh winters
four separate seasons with precipitation falling equally in each season
Answer:
short, humid summers and long, harsh winters
Explanation:
Got it right on my quiz.
A mountain range that separates two
species of bears is an example of which
of the following types of barriers?
A. ecologic isolation
B. temporal isolation
C. geographic isolation
D. mechanical isolation
A mountain range that separates two species of bears is an example of geographic isolation. Thus, the correct option for this question is C.
What is Species separation?Species separation may be characterized as a type of mechanism through which species are separated from one another by prezygotic and postzygotic barriers, which prevent mating or the production of viable, fertile offspring.
The process of speciation may occur due to isolating mechanisms, like geographical isolation which is known as allopatric isolation. Different geographical areas play an important role in the process of separating two or more species that give rise to speciation.
Therefore, a mountain range that separates two species of bears is an example of geographic isolation. Thus, the correct option for this question is C.
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Describe what happens during the phases of mitosis
Answer:
Mitosis is the phase where the cell splits its chromosomes equally among two daughter cells, and branches off into more cells.
In mitosis, there is the prophase, prometaphase, metaphase, anaphase, and telophase.
The prophase is where the nuclear envelope breaks down and chromosomes attach to spindle fibers. The metaphase is where chromosomes line up at the equator. In the anaphase, the cells move to opposite poles to split. Last but not least, the telophase. In this final phase, the two nuclei split into new cells.
what are the outputs of aerobic respiration
Answer: check online for the answer
Explanation:
Transformation is the transfer of dna from a donor to a recipient cell:
Transformation is the transfer of DNA from a donor to a recipient cell, mediated by a bacteriophage through the process of crossing over.
What do you mean by DNA?DNA stands for Deoxyriobo nucleic acid. It is considered the genetic material in most of the organisms living on the earth's surface.
It is the process that involves the horizontal gene transfer among prokaryotes. During this process, the DNA of the donor cell integrates into the recipient cell.
Therefore, transformation is the transfer of DNA from a donor to a recipient cell, mediated by a bacteriophage through the process of crossing over.
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How do alleles cooperate to create an offspring’s phenotype?
PLS HURRY
Answer:
Two different alleles come together and produce both trait forms. Two different alleles come together and produce a trait form that is neither dominant nor recessive. a chromosome that determines the X or Y of an organism.
50 POINTS!!
What is the name for the space inside the ribs that the lungs fill?
cavity
chest
lungs
diaphragm
Answer:
Cavity
Explanation:
The proper name is the plerual cavity. This space is filled with fluids that allows movement against the ribs.
Identify three organisms that belong in the same phylum as green algae and where they can be found.
which statement best summarizie the principle of fanul succession
Answer:
Fossils in older strata are more primitive than fossils in more recent strata.
Determine whether the following species are extinct, endangered, or threatened.
The Tasmanian tiger, the largest known carnivorous marsupial, was wiped out of the wild due to constant hunting:
The Amur leopard is now gone from most of its original habitat due to human activity. Only twenty to thirty Amur leopards remain in the wild:
Western Lowland gorilla populations have dropped sixty percent in the past twenty-five years due to poaching, habitat loss, and, mainly, disease. Their numbers are expected to keep dropping, and the species could soon disappear:
The Eastern gemfish population has declined due to commercial fishing. New protection efforts seem to be helping the population slowly recover:
The golden toad was forced from its breeding sites when erratic weather caused pools to dry up. No frogs have been found in over two decades:
multiple choice answer options: extinct species, endangered species, threatened species
Please help me its for my ingenuity class
Answer:
Extinct
Endangered
Endangered
Threatened
Extinct
Explanation:
In what type of cell does the cell wall take place of the membrane?
a. plant cells
b. fungi cells
c. cell walls never take place of cell membranes
Answer:
A: Plant Cells
Explanation:
the cell membrane is found in all living species, including plants.