Refer to the microscopic photos below.


Which cell is an onion cell and which is a cheek cell, and why?


A is a cheek cell slide because it is colorless, has a nucleus, and a cell membrane. B is an onion cell slide because it has color, has a nucleus, a cell membrane, and a cell wall.


B is an onion cell slide because it shows each cell with a nucleus, cell membrane and cell wall. A is a cheek cell slide because it shows a cell slide that does not have a cell wall, only a cell membrane as its outermost layer.


B is a cheek cell slide because it has a nucleus, a cell membrane and a cell wall as its outermost layer. A is an onion cell slide because it has a nucleus, a cell membrane and no cell wall.


A is an onion cell slide because it shows each cell with a nucleus, cell membrane and cell wall. B is a cheek cell slide because it shows a cell slide that does not have a cell wall, only a cell membrane as its outermost layer.

Answer:

1

Explanation:

Prevailing Westerlies are the winds in the middle latitudes between 35 and 65 degrees latitude. They tend to blow from the high pressure area in the horse latitudes towards the poles. These prevailing winds blow from the west to the east steering extra-tropical cyclones in this general manner.

The layer of the atmosphere has the widest variation in temperature: (C). Thermosphere

The Atmosphere can be defined as the layer of gas or layers of gases that covers a planet. it includes all the forms of gasses in a planet.

The thermosphere can be defined as the warmest region in the atmosphere, it varies with respect to the altitude.

In conclusion, The layer of the atmosphere has the widest variation in temperature is the Thermosphere

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Answer:

its 1.

Explanation:

i had a question similar to that one

I suggest use the condon charts in boxes

Answer:

Belong to the same species

Explanation:

Marsupials carry their young in "pouches", and are therefore related to other marsupials, like the kangaroo, opossum, wombats, and koala to name a few.

The opossum is a native of North America as the kangaroo is a native to Australia and both of them are mammals thus boh belong to the same specie. Thus option B is correct.

A mammal is an animal that is warm-blooded and has hair, vertebrates, and backbone. These creatures share human relations and produce milk for their young ones. The kangaroo is like an opossum that is marsupials carry their young in "pouches".

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Answer:

Biodiversity

Explanation:

They will of course exhibit the biodiversity of that given habitat because diversity refers to variation in abroad terms and can be applied to any area.

Answer:

During Metaphase II, sister chromatids of a homologous pair exchange genetic info

Explanation:

Answer:

During metaphase II, sister chromatids of a homologous pair exchange genetic information

Explanation:

H: Schizophrenia

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Answer:

True

Explanation:

The most common cereal grains that are used is wheat, rice, oats, and corn. WHich can all be high in a protein called prolamins, including vitamin D&E, fiber, iron, and other nutrients.

Genotype:BB

Ratio:2/4

Percent:50%

Phenotype:black fur

Genotype:Bb

Ratio:2/4

Percent:50%

Phenotype:black fur

Answer:

a

Explanation:

Answer: Mitochondria

Answer:

The correct answer is - 2. Serve a different function

Explanation:

In a multicellular organism there are different type of the cells present and termed and differentiat on the basis of their specific function in the body or the location in the body. The different type of cells present are epithelilal cell, nerve cells, connective tissue cell and muscle cell. These cells can be further divided on their function as well such as cardiac cell, hepatic cell, nephron cells and neurons and many other cells.

All these specialized cell peroform their own function in the body such as nephrons helps in blood purification, hepatic cells help in various functon include synthesis of bile and hormones and metabolism. Cardiac muscles made up of cells that helps in puming the blood and mainataining blood flow.

Explanation:

The correct way to write a scientific name is by using the genus and species of the organism. 

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Answer:

This question lacks options, options are: A) Vaccines for MRSA have become not effective because of changes to human immune systems. B) The presence of antibiotics induced the bacterial genomes to mutate and develop resistance to the drug. C) Decreased hospital sanitation practices to save money have resulted in increased presence of resistant staph infections. D) Selective pressures by excessive antibiotic use have increased the frequency of resistant strains of S. aureus over the last few decades.The correct answer is D.

Explanation:

The susceptibility of the various germs has varied greatly in recent years. Strains that had been consistently susceptible to all antimicrobial agents for decades have now developed resistance to these classic therapies, they have the ability to rapidly develop resistance to the newer antimicrobials. Methicillin Resistant Staphylococci (MRSA) is a clear example of this situation. The mechanism that confers resistance to methicillin is complex, since the bacterium has generated a genetic variation, which is encoded in the mecA gene, by which it modifies the structure of its penicillin-binding or binding protein (PBP2a), This prevents methicillin from adhering to the place where it is going to exert the action of blocking the transpeptidase enzyme (whose function in the bacterial life cycle is to synthesize the bacterial wall).Resistance to methicillin in strains of S. aureus is a growing problem worldwide, and staphylococcus gold is an agent that spreads easily and the behavior of the process is aggressive, with which this agent not only carries resistance to methicillin , but rather all ß-lactam antibiotics, including cephalosporins and carbapenem.

Answer:

D. Selective pressures by excessive antibiotic use have increased the frequency of resistant strains of S. aureus over the last few decades

Explanation:

Answer:

Yes.

Explanation:

Science.

Answer:the fault

Explanation:

Answer: C

Explanation:

complete mitosis in shorter time

Answer:

Wave speed is the distance a wave travels in a given amount of time, such as the number of meters it travels per second. Wave speed is related to wavelength and wave frequency by the equation: Speed = Wavelength x Frequency. This equation can be used to calculate wave speed when wavelength and frequency are known

Explanation:

looked it up

Answer:

v = f λ

v  is wave speed

f  is frequency of the wave

λ  is wavelength

Explanation:

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Answer:

plant cell can make its own glucose; an animal cell cannot

Explanation:

Chloroplasts are found in plant cells, but not in animal cells. The purpose of the chloroplast is to make glucose that feed the cell's machinery. Photosynthesis is the process of a plant taking energy from the Sun and creating glucose.

Trichoplax contains at least six somatic cell types: dorsal and ventral epithelial cells, lipophils, fiber cells, gland cells and crystal cells.

Trichoplax contains at least six somatic cell types: dorsal and ventral epithelial cells, lipophils, fiber cells, gland cells and crystal cells.

Somatic cells are involve in the growth and development of an organism required for repair and regeneration

Somatic cells participate in mitosis and contain the same set of chromosomes, these cells have a diploid set of chromosomes as compared to gametes produced by meiosis and have a haploid set of chromosomes

Somatic cells undergo mutation frequently as compared to germ cells, used for cloning by which an identical clone of an individual is produced

Somatic cell nuclear transfer  is one such process where the nucleus of a somatic cell is transferred to an ovum cell. Somatic cells are used to conserve genetic information of animals.

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Answer:

B. Chromosomes are threadlike structures that carry genetic information

Explanation:

Normally developed humans carry about 46 chromosomes in each cell, so A is false.

The numver of chromosomes is equal from the mother and the father, so C is false.

Chromosomes are arranged in 23 distinct pairs, so D is false.

The statement that best describes chromosomes is: Chromosomes are the threadlike structures that carry the genetic information.

It is a structure that is present in both prokaryotes and eukaryotes and is composed of nucleic acid (DNA) and proteins. It is responsible for genetic information.

Hence, option b) is the correct option.

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Answer:

RNA and proteins

Explanation:

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Answer: Along with substitutions, mutations can also be caused by insertions, deletions, or duplications of DNA sequences. Some mutations are hereditary because they are passed down to an offspring from a parent carrying a mutation through the germ line, meaning through an egg or sperm cell carrying the mutation.

Explanation:

A mutation that could be inherited by offspring would leads from a base substitution in gametes during meiosis. The correct option is D.

Any alteration to a cell's DNA sequence. Alterations in cell division can result in specific mutations.

As can exposure to environmental DNA-damaging substances. Mutations may be negative, positive, or ineffective.

Errors in DNA replication during cell division, exposure to mutagens, or viral infection can all cause mutations.

Somatic mutations (which happen in body cells) cannot be passed on to offspring, whereas germline mutations (which happen in eggs and sperm) can.

A base substitution in gametes during meiosis would result in a mutation that might be passed on to progeny.

Thus, the correct option is D.

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Your question seems incomplete, the probable complete question is:

A mutation that could be inherited by offspring would result from-?

Answer:

8

Explanation:

The haploid number is always half of the diploid number so half of 16 is 8

Answer:

The description about population according ecologists is as follows:

Explanation:

Thre are various ecological aspects studied by the ecologist in the ecosystem and one of them is Population ecology. According the ecolgists all member or total individuals of a particular species present in an ecological community is Population.

There are different asppects of the population ecology that helps in the understanding the population such as size of population, growth of population nter and intra- intractions of population. All these aspects are part of population ecology studied by the ecologists.