Answer:
i d k
Explanation:
i d k
The changes that occurred in Yellowstone National Park after all of its wolves
were killed showed that wolves are
A. harmful to the ecosystem
B. the only producers in the ecosystem
C. beneficial to the ecosystem
a
D. unnecessary for the survival of other species
HELPPPPPPPP!!!! what is a mutation that a polar bear can have to help conserve energy and how do genetic mutations relate to chromosomes, genes, protein, and DNA?
Answer:
wings
Explanation:
Human caused reductions of biodiversity, include pollution, invasive species, and overexploitation.
O True
O False
Answer:
True
Explanation:
Development, together with globalization, drove severe changes at a global level. The natural and original environments suffered from these effects and still are.
Human beings have constantly been altering the natural ecosystems and causing irreparable damages to nature. For many decades, development involved society and technology advance over new areas unpopulated by humans.
Some of the principal human activities responsible for biodiversity loss are
the uncontrolled use of unrenewable resources, overexploitation of renewable resources; land destruction for the mining industry, farming and cattle industry, buildings, and other infrastructures; the unplanned advance of cities, and opening of new roads to connect those cities.All of them involving
deforestation and fragmentation of natural landscapes; water, air, and soil pollution, species loss, and reduction of biodiversity.With globalization, transport around the world became normal. And when traveling around the world, new species are intentionally or unintentionally transported too. When these species, of animal or vegetable origin, get established in a new area, they overgrow to the point of turning invasive.
Invasive species are uncontrollable and cause severe damage in native endemic species by competing for resources. The whole ecosystem structure changes.
But there are some background glitches in the system that are the principal responsible for all the mentioned activities. Some important aspects are lacking
The respect for nature, People´s education at different levels to care and protect wildlife, Interest in keeping ancestral knowledge, Planning and previous environmental impact studies, Policies to control human activities, Caring involved government.If, as a society, we lack these aspects, the possibilities of changing our impact on nature are far away.
A major cause of genetic variation within a species is the result of -
if computer weather models can predict the weather into the future, why are meteorologists still needed?
Answer:
Meteorologists use computer programs called weather models to make forecasts. Since we can't collect data from the future, models have to use estimates and assumptions to predict future weather. if there are no meteorologist who would prepare those models
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Which one of the following statements is not true? Enzymes,
A) are typically consumed by the reactions they promote
B) are proteins that change the rate of chemical reactions.
C) have structures that correspond to their function.
D) function as organic catalysts.
E) regulate virtually all chemical reactions in a cell.
Answer:
statement c
Explanation:
d and c are very different so it would be those two but function is organic so its c
"Is it the year 2017?" might be an example of which concept?
a) Pneumograph
b) Detection cue
c) Control question
d) Pre-test
Answer: C. Control Question
PLS HELP ILL GIVE YOU BRAINLEIST PLS PLS PLS PLS PLS PSL
Answer:
on what question should i help u with?
Explanation:
**HURRY** Because of convection currents, wind (air) moves from high pressure areas to low pressure areas. True or false?
What features of eukaryotes provide additional opportunities for the regulation of gene expression compared to bacteria? Select all that apply. Select all that apply. interaction with external environment transcription and translation are coupled processes separated processes of transcription and translation presence of chromatin opportunity for posttranscriptional and pre-translational regulation activation of all genes in genome
Answer:
separated processes of transcription and translation presence of chromatin opportunity for posttranscriptional and pre-translational regulationExplanation:
Since there is no nucleus surrounding the genetic material in prokaryote cells, the transcription and translation processes occur simultaneously. Transcription stops when a protein is not necessary. So the control of protein synthesis is regulated by transcription and not translation. Once the transcription is on, all the following steps must follow it.
Transcription is the process that controls the genic expression in bacteria.
Eukaryotes do possess a nuclear membrane that separates the genetic material from the rest of the cell. The transcription process occurs inside the nucleus membrane, while the translation process occurs outside. In the cytoplasm occur the translation process and protein synthesis. Genic regulation can happen in any of these processes in different regions of the cells.
In eukaryotes, the regulation of the genic expression control might happen at different levels:
Epigenetic level: When DNA molecules open and nucleosomes separate to join the transcriptional factorsTranscription level: When the messenger RNA is being transcriptedPost-transcription level: When mRNA goes to the cytoplasm Translation level: During the protein elongationPost-translation level: Once the protein synthesis is over.What are the effects of cystic fibrosis
Food is useful to organisms because it contains ? Radiant energy, thermal energy, motion energy, chemical energy
Answer:
Chemical energy
Explanation:
Because food passes through chemical reactions. eg. digestion of food is a chemical reaction
1. What do you understand by the resolution or resolving power of a lens?
Answer:
The resolving power of an objective lens is measured by its ability to differentiate two lines or points in an object. The greater the resolving power, the smaller the minimum distance between two lines or points that can still be distinguished. The larger the N.A., the higher the resolving power.
Explanation:
WILL GIVE BRAINLIEST!
Which biome did you identify as the same on two continents? Are similar types of animals found on both continents?
The biome which is identified as the same on two continents is grassland biome
Interestingly too, there are similar animals found on this grassland biome such as antelope, falcon, fox and others
What are grassland biomes?Grassland biomes are areas that are well covered by grass species of different kinds. It is found in every continent of Africa charactezed by flat and grassy areas. There are different species of grasses which dominate every grasslands
What is a biome?It is an area which is dominated by a particular species of living organisms
Learn more about biomes:
https://brainly.com/question/1509418
Which is a nonrenewable resource used to heat homes?
O Wind
O Solar energy
O Natural gas
O Wood
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
Answer:
C
Explanation:
It's C because pandemics mean a virus that spreads across continents like the cholera virus in your chart.
Have a nice day and hope this helped!
nvm the answer the person above gave is correct because a pandemic is basically an epidemic that occurs over a wide area
A population of raccoons is thought to be in Hardy-Weinberg equilibrium for a tail-length gene. The frequency of the dominant allele (long tails) is 0.8. When a certain forest was surveyed, the scientist was able to tag 25 animals, which were all long-tailed. Does the lack of short-tailed animals suggest that the population is out of Hardy-Weinberg equilibrium in this forest?
A. Yes, because the survey shows 100% AA individuals, so the short tils must have been selected against.
B. No, because you would only expect 4 of the surveyed racoons to be short-tailed, so they may have been missed by chance.
C. Yes, because 20% of the surveyed raccoons should have been short-tailed.
D. No, because you would only expect 4% of the raccoons to be short-tailed, so they may have been missed by chance.
Answer:
D. No, because you would only expect 4% of the raccoons to be short-tailed, so they may have been missed by chance.
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
Answer:
D
Explanation:
We experienced a technical problem when submitting the answer to this question. SO, to avoid that, we carefully typed the step-by-step explanation in a word document, made a screenshot of it, and attached it in the image below. The first image shows the technical glitch we experienced and the subsequent images show the explanation of the question.
Thanks.
please hurryyyyy!!!!!
These traits are found on chromosome #23 and specifically on the X chromosome
a. sex influenced traits
b. linked traits
c. sex linked traits
d. multiple alleles
Answer:
C. Sex linked traits.
Explanation:
It explains more on https://www.sciencedirect.com/topics/neuroscience/x-chromosome.
Choose the best answer for the following question:
What kind of information can be gained about an organism from its scientific name?
a
what genus it is
b
what species it is
c
where it lives
d
what genus and species it is
Match the body cavity type to its proper description. - Coelomate - Pseudocoelomate - Acoelomate - Coelom A. A fluid or air-filled space between the digestive tract and the outer body wall. B. Completely lacks a body cavity between the digestive cavity and outer body wall. C. Has a body cavity lined by tissue derived from the mesoderm and by tissue derived from the endoderm. D. Has a body cavity completely lined by tissue from the mesoderm. E. Germ Layer
Answer: A. A fluid or air-filled space between the digestive tract and the outer body wall. - Coelom
B. Completely lacks a body cavity between the digestive cavity and outer body wall. - Acoelomate
C. Has a body cavity lined by tissue derived from the mesoderm and by tissue derived from the endoderm. - Coelomate
D. Has a body cavity completely lined by tissue from the mesoderm. - Pseudocoelomate
E. Germ Layer- Coelomate
Explanation:
Coelom is a fluid filled body cavity which stores food, blood like fluid in it in some animals.
Those organisms which do not possess the body cavity or coelom they are called as acoelomate. Example, Platyhelminths
Those animals which have a body cavity derive from the germinal layers ectoderm, endoderm, and mesoderm are coelomate. Example, Annelids
Those animals which have scattered pouches which are not lined by all germinal layers instead one mesoderm will not be able to form coelom. These are called as pseudocoelomate. For example, Nematodes.
When both lactose and glucose are available to E. coli, which part of the lac operon regulation assures that glucose will be metabolized first? When both lactose and glucose are available to E. coli, which part of the lac operon regulation assures that glucose will be metabolized first? Permease allows lactose to enter the cell when lactose enters the cell. The repressor binds to the operator in the absence of lactose. The repressor cannot bind to the operator in the presence of lactose. RNA polymerase transcribes the lac operon to make a single RNA molecule. CAP binds to cAMP and then to the promoter only in the presence of low glucose.
Answer:
CAP binds to cAMP and then to the promoter only in the absence of low glucose
Explanation:
When both lactose and glucose are available to E. coli, the part of the lac operon regulation that assures that glucose will be metabolized first is
CAP binds to cAMP and then to the promoter only in the absence of low glucose
Lactose is a type of sugar that is found naturally in milk produced by mammals and Glucose is a monosaccharide made mostly by plants during photosynthesis
The purpose of mitosis is to ___, while the purpose of meiosis is to ____.
a) make new cells, and only germ-line cells do it;
b) make eggs or sperm, and all the body cells do it make eggs or sperm, and only germ-line cells do it;
c) make new cells, and all body cells do it make eggs or sperm, and only somatic cells do it;
d) make new cells, and all body cells do it make new cells, and all body cells do it;
e) make eggs or sperm, and only germ-line cells do it
Answer:
A) make new cells(somatic cells)and only germ-line cells do it(meiosis)
Explanation:
Meiosis is the process through which germ cells that produce gametes such as sperm and eggs are formed. It is an equatorial division that involves the parental cell dividing into daughter cells each containing similar genetic material as the parents cell and this can be passed on to successive generation.
While Somatic cells are cells that form the building blocks of the body, they are the actively divided body part and only divide by mitosis.
Meiosis produces germ cells while mitosis produces somatic cells.
The largest endocrine gland (s) that makes 3 hormones that affect the metabolism is the: *
A. pituitary gland
B. thyroid gland
C. pancreas
D. adrenal gland
Answer:
The largest endocrine gland (s) that makes 3 hormones that affect the metabolism is the: thyroid gland.
The largest endocrine gland that makes three hormones that affect metabolism is the Pancreas. Thus, the correct option for this question is C.
What do you mean by Endocrine Gland?An endocrine gland may be defined as a type of gland which consists of several organs that make hormones and release them directly into the blood so they can travel to tissues and organs all over the body. These hormones control many important functions in the body, including growth and development, metabolism, and reproduction.
The pancreas is the largest endocrine gland that significantly makes three hormones namely, Insulin, Glucagon, and Somatostatin. These hormones are actively involved in the regulation of metabolism by numerous mechanisms.
For example, insulin lowers the level of sugar in the blood, while glucagon increases the level of sugar by transforming its storage form.
Therefore, the largest endocrine gland that makes three hormones that affect metabolism is the Pancreas. Thus, the correct option for this question is C.
To learn more about Endocrine glands, refer to the link:
https://brainly.com/question/4455660
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PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
Answer: d
Explanation:
They are compe for the same prey which means this is a survival competition
23. According to the chromosome theory of
inheritance,
A the traits of an individual
organism are a blend of its parents'
characteristics.
B the traits of an individual organism
are controlled by genes with only two
possible alleles.
C genes pass from parents to their
offspring on chromosomes.
D a sperm and an egg cell join during
the process of fertilization.
Answer:
C. genes pass from parents to their offspring on chromosomes.
Diabetes is a disorder of which body part? O the adrenal gland the thyroid the pancreas the liver
Answer:
The pancreas
Explanation:
it happens when the pancreas doesnt produce enough of something called insulin
For the voltage-gated sodium channel to allow sodium into the cell:_______.
a. the activation and inactivation gates must both be open
b. only the activation gate must be open
c. only the inactivation gate must be open
d. the inactivation gate must be closed shortly before the activation gate opens
e. the activation and inactivation gates must both be closed
Answer:
The correct option is - (a) the activation and inactivation gates must both be open.
Explanation:
Option (a) is correct because of the following reason -
The axonal membrane is at its natural resting potential until an action potential occurs, and [tex]Na^+[/tex] channels are deactivated and blocked on the extracellular side by their activation gates. The activation gates open in response to an electric current, allowing positively charged [tex]Na^+[/tex] ions to flow into the neuron through the channels. When enough [tex]Na^+[/tex] has penetrated the neuron and the membrane potential has reached a certain level, the [tex]Na^+[/tex] channels inactivate themselves by closing their inactivation gates at the height of the action potential. The inactivation gate can be thought of as a "plug" tethered to the intracellular alpha subunit's domains III and IV. When the inactivation gate is closed, the flow of [tex]Na^+[/tex] through the channel is stopped. As a result, both the activation and inactivation gates must be open to enable sodium ions to enter the cell.
Hence , the correct option is (a).
Which of the following fresh water biomes consists of moving water
Answer:
Biomes consists of moving water is estuaries.
Biology 1 Post Lab Questions: 1. Which method appear · which method appeared to have the most dramatic denaturing effect on egg albumin? Why do you think this method had a greater effect?
Hello. You have not introduced the methods used to denature the egg albumin. However, the most efficient protein denaturation method is the heating method.
The denaturation of a protein, such as albumin, occurs when an element causes the complete destruction of the protein's three-dimensional structure, in a completely irreversible way. The best way to do this is through heat. In this way, through a heating method, the heat breaks the hydrogen bonds that promote the structure of the protein, leaving it completely denatured.
Please help me with this page
Answer:
2.D 3.nitrogen and oxygen 4.at the poles 5. 8 minutes and 20 seconds 6.B
Explanation: