BIOLOGY HIGH SCHOOL

2. While performing a streak plate, you forget to flame the loop between streaks. What do you think will be the results? 3. Why is important to drag the inoculation loop through a previous quadrant when streaking to a new quadrant?

Answers

Answer 1
Answer: 2. The result will be all quadrants that are similar to the first quadrant. You will have a lawn of bacteria.
3. So the next quadrant will use the bacteria from the previous quadrant and the colonies will be more spread out.


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Answer 2
Answer:

Final answer:

Forgetting to flame the loop between streaks in a streak plate can result in mixed or contaminated cultures.

Dragging the inoculation loop through a previous quadrant when streaking to a new quadrant is important to obtain isolated colonies and pure cultures.

Explanation:

The streak plate technique is a method used in microbiology to isolate and obtain pure cultures of microorganisms. It involves streaking a sample containing a mixture of microorganisms onto an agar plate in a pattern that allows for the separation and growth of individual colonies.

When performing a streak plate, it is important to flame the loop between streaks. This step sterilizes the loop, preventing cross-contamination between different quadrants of the plate. By forgetting to flame the loop, there is a higher chance of carrying over microorganisms from one quadrant to another, resulting in mixed or contaminated cultures.

Dragging the inoculation loop through a previous quadrant when streaking to a new quadrant is important for diluting the number of microorganisms being transferred. This technique ensures that each quadrant receives a decreasing number of cells, allowing for the growth of isolated colonies. It helps to obtain pure cultures for further study and identification.

Learn more about streak plate technique in microbiology here:

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Which can reduce the amount of organic material discarded in landfills? A. biomass energy
B. solar energy
C. water energy
D. wind energy

Answers

Answer: A


Biomass energy can reduce the amount of organic material discarded in landfills.

Animals in desert biomeso must have thick fur to survive the cold nights
o only come out during the day, when temperatures are warm
O have special adaptations to survive the extreme climate
suvive by eating cereal grasses, like wheat and barley

Answers

Answer:

The answer is   the third one,have special adaptations to survive the extreme climate. I'm not really sure.

Explanation:

Answer:

have special adaptations to survive the extreme climate

survive by eating cereal grasses, like wheat and barley

Explanation:

I agree with the third one!  :)

Justin in looking at 2 chromosomes that have identical alleles for particular trait. these chromosomes are considered what

Answers

Justin is looking at two chromosomes that have identical alleles for particular traits, these chromosomes are considered homozygous. Homozygous alleles are those that have alternative form of a given gene. It may be recessive or dominant. The dominant trait is represeted by capital letters while the recessive trait is represented by small letters.

C. h -> <- h


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Which term describes a behavior of an organism that allows it to survive in its particular environment?a. evolution
b. adaptation
c. organism
d. ecosystem

Answers

    The term that describes a behavior of an organism that allows it to survive in it's particular environment is adaptation. Hope this helped!

Help pleasseeeeeee Condensation helped to form early oceans when water vapor in clouds begin to cool. The temperature on early Earth was important to the early oceans. What would have happened if the temperature of early Earth had heated significantly soon after the oceans formed?

The water in the ocean would have evaporated.
The water in the ocean would have undergone sublimation.
The water in the ocean would have percolated down into the soil.
The water in the ocean would have undergone evapotranspiration.

Answers

The correct answer is option A

The water in the ocean would have evaporated. Condensation was the reason for the formation of clouds and rain at that time. The temperature at that time was in the favor for the formation of ocean. Then, the ocean was formed and if the temperature could have increased soon after the oceans were formed. The water could have evaporated from the oceans.
The water in the ocean would have percolated down into the soil.

In this excerpt from the poem "Learning to Read" by Frances Ellen Watkins Harper, what is the meaning of the word rising?And said there is no use trying,
Oh! Chloe, you're too late;
But as I was rising sixty,
I had no time to wait.

A. advancing

B. approaching

C. increasing

D. elevating

E. succeeding

Answers

The correct option is B.
To be rising means to be going up or to be increasing. Based on the way the word 'rising was used in the given excerpt, the word implies approaching. What the character in the poem was trying to say is that, since he is approaching his 60th birthday, he felt that time is going and he can not afford to waste anytime again, so he set out to accomplish his desires.

Answer: B. approaching.

Explanation:

  • The word approaching means to come near to a certain distance, time or anything else.
  • In the given excerpt, the word rising is placed before sixty which indicates the age.
  • In the given poem the character is saying "but as I was rising sixty" this means that the word rising points out to reaching the age of sixty and because the word approaching means to come near to something, it is the most appropriate answer.
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