BIOLOGY HIGH SCHOOL

Which of the following statements is FALSE regarding Oomycota?a. they belong to the group of water molds
c. they were responsible of the Great Potato Famine in Ireland
b. they take the form of sporangia
d. they have hyphae

Answers

Answer 1
Answer:

The answer is (c.) They take the form of sporangia.

The Oomycota or Oomycetes is also known as water molds. In 1840, this type of genus ravaged some parts of Europe especially in Ireland. It is called the Irish Potato Famine. They are rarely to have septa or hyphae but if they do they appear at the bases of sporangia. They only appear on sporangia not takes its form.

Related Questions

What is the primary purpose of photosynthesis?
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African elephants flap their large ears to cool off. Which biology theme does this phenomenon represent?
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A population of mammals originally lived in a certain area surrounded by land then some of the organisms were taken to an island these two populations remain separated for hundreds of years

Answers

They should diverge slightly, though a mere few hundred years is most likely insufficient for reproductive isolation to occur.

Organisms in the same ecosystem are all _______.a.

interrogative


b.

interdependent


c.

intermediate


d.

interceptive

Answers

Answer: b. Interdependent.

Explanation:

  • The word ecosystem itself means a system where the living and non- living components interact with each other.
  • Thus, all the biotic and abiotic components of an ecosystem interact with each other and thus, are interdependent on each other for their survival.
  • Even if one of the components in an ecosystem is removed, the entire ecosystem gets disturbed and, it affects the other components as well.
  • So organisms in the same ecosystem are all interdependent.
The answer is B. interdependent.

Imagine you are in a laboratory. You are exploring the following reaction: A + B → C When the product C is created, bubbles form. When 10mL of A is added to 10mL of B, the reaction takes twenty seconds. Your teacher gives you three unknown substances (X, Y, and Z), one of which is a catalyst for the reaction. Design an experiment to test substances X, Y, and Z to determine which one is a catalyst for the reaction.

Answers

Ok so in this experiment what we want to find is the catalyst for the reaction. Our original reaction is the following. A + B --> C, therefore to find which of the unknown substances (X, Y, and Z) is the catalyst reaction we simply have to do the following:


A + B + X --> C

A + B + Y --> C

A + B + Z --> C


The reaction that produces C much faster than our original reaction A + B --> C will be our catalyst. The reason being that one of the substances will increase the rate of the chemical reaction.


I hope it helps, Regards.

Prepare three test tubes containing reactant A.  Prepare three test tubes containing reactant B.  Add one test tube of reactant B and one unknown to one test tube of reactant A. Repeat for the other two unknowns. Time the reaction until bubbling stops. The unknown that causes the reaction to occur the quickest is the catalyst.

Bears and salmon have a predator-prey relationship. What would the possible outcome would happen to the bear population when the salmon population increases? A. stay the same. B. decrease. C. increase. D. become extinct

Answers

I think the correct answer from the choices listed above is option C. Most likely, the bear population will increase  when the salmon population increase since more food is available for the bears so they can reproduce more without problem. Hope this answers the question.

A(n) ______ is a large-scale category containing many communities of a similar nature, and its location is largely controlled by climatepopulation
ecosystem
biome
none of the above

Answers

biome

A biome is a large-scale category containing many communities of a similar nature, and its location is largely controlled by climate


NOT:
population
ecosystem
none of the above

Valence is the number of electrons an atom must gain or lose in order to _____ its outer energy level or have a stable octet in its outer shell.complete
lose
gain

Answers

The correct answer is complete.

Valence is the number of electrons an atom must gain or lose in order to complete its outer energy level or have a stable octet in its outer shell. In the first energy level it can have only 2, but later levels can have 8, that is, an octet.

Answer;

Complete

Valence is the number of electrons an atom must gain or lose in order to complete its outer energy level or have a stable octet in its outer shell.

Explanation;

-Valency is the number of electrons that an atom requires to gain or lose to form a complete configuration or an octet configuration.

-Atoms tend to lose or get electrons in order to achieve the electronic arrangement of atoms of the noble gases. An ion is an atom or group of atoms having an overall electrical charge. Atoms gain electrons to form cations (positively charged atom), while other lose to form anions (negatively charged atoms).
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