BIOLOGY HIGH SCHOOL

Which are required for natural selection to occur

Answers

Answer 1
Answer:

Natural selection has been the process that allows organisms to adapt to changes. Heritable variations for some traits are required for natural selection. Thus, option A is correct.

What is natural selection?

Natural selection has been defined as the process of survival and reproduction that are evident in evolution and are characteristic of a population or generation of the species.

For natural selection to occur variations, existence and inheritance are the major requirements that are crucial for the organism to show the adaptation and evolutionary process.

Traits inherited from the previous generation must show some variation so as to make the current generation more beneficial and selectable over the ancestral generation.

Therefore, option A. the heritable variations of some traits are an important factor for natural selection.

Learn more about natural selection, here:

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Your question is incomplete, but most probably your options were,

  • heritable variations of some traits
  • the ability of an organism to improve a trait during its lifetime
  • equal probability of survival for all offspring
  • fewer offspring than the environment can support
Answer 2
Answer:

Answer:

1. heritable variations for some traits

Explanation:

Assuming the options are:

  1. heritable variations for some traits
  2. the ability of an organism to improve a trait during its lifetime
  3. equal probability of survival for all offspring
  4. fewer offspring than the environment can support

there are four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.

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Describe how C. parvum obtains the glucose it needs for glycolysis after it has infected another cell. Explain the role of lactate dehydrogenase in enabling C. parvum to continue producing ATP by glycolysis.

Answers

Cryptosporidium parvum is a pathogenic agent that causes the disease cryptosporidiosis. The pathogen obtains glucose directly from the host. It can also obtain by the breakdown of polysaccharides.

C. parvum produces ATP through glycolysis. The enzyme lactate dehydrogenase is used by the C. parvum to generate metabolic ATP. It generates this ATP through the glycolytic pathway. The enzyme allows the conversion of NADH to NAD+. NAD+ is necessary for glycolysis to produce ATP. Metabolic energy plays a crucial role in the growth and proliferation of the pathogen in the host.

Some of the features of C. parvum are:

  • It consists of a unique lactate dehydrogenase enzyme to yield ATP.
  • It causes the disease in the gastrointestinal tracts.
  • The pathogen is used for research and understand its ability to obtain ATP directly from the host.

Therefore, C. parvum consists of enzyme lactate dehydrogenase that helps in energy production through the glycolytic pathway.

To know more about C. parvum, refer to the following link:

brainly.com/question/16360264

Answer:

Cryptosporidium parvum is an apicomplexan pathogen that obtains glucose either directly from its host or by the degradation of polysaccharides.

Explanation:

C. parvum only can produce ATP by glycolysis. Lactate dehydrogenase (LDH) is a universal enzyme required to synthesize pyruvate, which is the final product of the glycolysis process. This enzyme has been subject of research to understand the metabolism and evolution of apicomplexan parasites, including C. parvum.

Which valences have the greatest tendency to form ions? +1 -1 +2 -2 +3 -3 +4 -4

Answers

Answer:

+1, -1, +2, -2, +3, and -3 are the answers :)

Explanation:

Answer:

+1,-1,+2,-2,+3,-3

Explanation:

Please help

Thank you

Answers

1st change she can make exercise going to the gym lots of running. 2nd change better food choices grains, fruits, fish,chicken,vegetables.  

You see a television commercial for a new antibiotic. The ad includes someone claiming that the antibiotic helped cure them of the flu. What are two reasons why you might question this claim?? EXPLAIN.

Answers

the flu cannot be "Cured" but can oly be surpressed so it in inactive. only the body white blood cells can kill and fully remove the virus. 
this is questiponed because it is true that it is limited to only one person, but this person may not of even had the flue to begin with. the the second question is which flue did the person have. swine flu is deadly and cannot be removed with antibodies or antibiotics. which is a pain because this flue kills the body. 
the second things that is questioned is, is the antibiotic stable enough for everyone?
everyone has a different immune structured in different ways. some antibiotics will not help certain people because of the lack of lipids and enzymes in the hosts blood. this can be fatal because the body has a natural buffer in the blood that the antibiotic can easily damage and kill the host. 
The sample is limited to one person so it doesn't provide a wide view of the product.
There is no expert opinion so it is not as believable.

How are breathing and cellular respiration similar

Answers

Breathing and cellular respiration are similar in nature because major part of both the processes involves oxygen.

Further Explanation:

The glucose is broken down by a process called cellular respiration. The cellular respiration occurs in mitochondria of animals and plant. Cellular respiration is referred as a total collection of methods and metabolic process that occur in cells. The cellular respiration is a process by which the cells of the body breakdown the food to produce energy. This energy is required for all the metabolic functions as well as the physical role of the body. Cellular respiration can be dividing into three stages

  • Krebs cycle
  • Glycolysis
  • Electron transport chain

{{\text{C}}_{\text{6}}}{{\text{H}}_{{\text{12}}}}{{\text{O}}_{\text{6}}}{\text{+6}}{{\text{0}}_{\text{2}}}\to{\text{6C}}{{\text{O}}_{\text{2}}}{\text{+6}}{{\text{H}}_{\text{2}}}{\text{O+CHEMICAL ENERGY+ATP}}  

Breathing involves inhalation of air which is rich in oxygen and exhaled out carbon dioxide because of the breathing cells get enough oxygen for the process of cellular respiration. Carbon dioxide is produced in the body by the process of cellular respiration. Both the process use oxygen and produced carbon dioxide.

Learn more:

Answer Details:

Grade: High School

Subject: Biology

Chapter: Cellular respiration

Keywords:

Cellular respiration, Krebs cycle, electron transport chain, mitochondria, animal, plant, carbon dioxide, oxygen, metabolic function, body.

Both involve gas exchange by taking in oxygen and releasing carbon dioxide.

An egg is protected by its outer shell. However, the shell also allows moisture and air to pass through. Which cell structure performs a similar function?A:cell membrane
B:cytoplasm
C:nucleus
D:vacuole

Answers

Answer:

Cell membrane.

Explanation:

The cell is the basic unit of the living organisms. The cell consists of the various cell organelles like nucleus, mitochondria and Golgi. The cell membrane covers the cell boundary.

The outer shell protects the egg and allows the exchange of moisture. The plasma membrane performs the similar functions ad allows the transport of some selected particles only.

Thus, the correct answer is option (A).
A:cell membrane, is right
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