BIOLOGY HIGH SCHOOL

Plant cells have a _____ while animal cells do not. A. plasma membrane B. nucleus C. cell wall

Answers

Answer 1
Answer: The answer is C. cell wall. Plant cells have a cell wall while animal cells do not. Plant cells' cell wall is mostly made of cellulose, which is a polysaccharide.
Answer 2
Answer: Plant cells have a cell wall, while animal cells do not. They both, however, have a plasma membrane and a nucleus.

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Monomers linked together to form a polymer could be described as beads in a multicolored necklace. Which one of the following statements about monomers is true with respect to the above analogy?

Answers

I think you forgot to give the choices along with this question. I am answering the question based on my research and knowledge and hope that the answer comes to your help. The statement about monomers that can be considered as true with respect to the above analogy is that monomers in a polymer are of different types. 

Out of the following given choices;

A. Monomers in a polymer could be linked in various ways.

B. Monomers in a polymer are of different types

C. Monomers in a polymer look different but are structurally similar.


The answer is A.  The multicolored necklace analogy means that the polymer is composed of different types of monomers.  They, therefore, could also be linked in various ways. An example of this type of polymer is synthetic  nylon and polyethylene, or phospholipids and oils in biology. If the monomers making the polymer are of one kind, then the best necklace analogy would be that it is composed of the same colored beads.


The hypothesis of continental drift is used to explain an event that happeneda. two million years ago.

b. two hundred million years ago.

c. two billion years ago.

d. two hundred billion years ago.

Answers

The hypothesis of continental drift is used to explain an event that happened

a. two million years ago.

b. two hundred million years ago.

c. two billion years ago.

d. two hundred billion years ago.

The answer is (b) Two hundred million years ago

Answer: b. two hundred million years ago.

Continental drift is a scientific theory was developed by Alfred Wegener (1880-1930). He was a German meteorologist, who proposed the hypothesis that continents were the part of huge landmass or supercontinent about 200 million years ago. These continents got separated or splitted from their parent  continent and drifted to other locations. He named the parent or supercontinent as "Pangaea" (which means "all lands" in Greek) which began to break up.  

Which statement represents the correct association of organisms and their habitat? Each organism will be found in only one habitat. Plants, but not animals, can flourish in several habitats. Animals, but not plants, can flourish in several habitats. Some plants and animals are restricted to a particular habitat

Answers

The correct answer is Some plant and animals are restricted to a particular habitat. That means that they would not be able to live in other habitats either because of natural predators that would eliminate them or because they would ruin the ecological system if they were to interfere with the natural order of things. Things like climate might also affect this.

SOS:

The answer is:

Some plants and animals are restricted to a particular habitat while others may occupy a variety of habitats.

Hope this helps!!

To determine whether two organisms are related, scientists may compare the _____ of their cells.

Answers

Scientists may compare the DNA of the cells.

Which of the following features differentiates sporozoans from the other phyla of protozoans?

Answers

Firstwe have to know that sporozoans are a strictly parasitic protozoanthat are usually immobile. Of the following features the one thatdifferentiates protozoans from the other phyla of protozoa is:


Answer:A) Sporozoans lack locomotor organs.


Ihope this helps, Regards.

In order to survive, all organisms must carry out 1) autotrophic nutrition 2) heterotrophic nutrition 3) enzyme-controlled reactions 4) the process of reproduction

Answers

Correct Answer is (3)

Explanation:

    (3) In order to survive, all organisms must carry out enzyme-controlled reactions.

  • Enzymes is the Most of the responses that happen in living life forms are chemical controlled.
  • They are along these lines explicit in the responses that they catalyze  one chemical will respond with particles of one substrate.
  • The site of the response happens in a territory on the outside of the protein called the active site.
  • Enzymes can be influenced by an assortment of elements, for example, temperature, pH, and focus.
  • Chemicals work best inside explicit temperature and pH ranges, and imperfect conditions can make a protein lose its capacity to tie to a substrate.
  • The most of the enzyme has an optimum pH range.
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