1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
erik [133]
3 years ago
12

In an experiment to study the effect of ultraviolet light on bacteria, it was concluded that ultraviolet light has a sterilizing

effect on bacteria. Which of these observations could have led to this conclusion? A) Ultraviolet light stopped the replication process of bacteria. B) Bacterial colonies exposed to ultraviolet light continued to replicate. C) Bacterial colonies exposed to ultraviolet light became resistant over time. D) Ultraviolet light increased the rate of binary fission in the bacterial cells.
Biology
1 answer:
RoseWind [281]3 years ago
3 0

The answer is A because that means the the bacteria stoppped reproducing as it got weaker.

You might be interested in
Which of the biogeochemical cycles can impact all of the others the most directly?
Gala2k [10]
The answer is d. Water Cycle.
5 0
3 years ago
Which of the choices below describes the pathway of cellular respiration (the complete oxidation of glucose)?
tia_tia [17]
Glycolysis, Krebs cycle, electron transport chain, oxidative phosphorylation
5 0
3 years ago
What two body systems help get the nutrients that are absorbed throughout the body?
KiRa [710]

Answer: The circulatory and digestive systems

4 0
2 years ago
Analysis Questions:
Drupady [299]
<span>1. List five observations Darwin made about the Amblyrhynchus lizards.

a. They measure about 2-3 feet long.
b. They are cold-blooded.
c. They feed on crab and sea lion feces.
d. They are the only marine iguanas in the world.
e. Their nostrils are connected to salt glands that allow them to expel excess sea salt. 

</span><span>2. Describe two examples of structural adaptations that Darwin observed.

a. </span><span>Darwin discovered that finches in the Galapagos have thirteen different kinds of beaks. 
b. </span>Darwin observed two kinds of giant tortoises that are distinguished by the shapes of their carapaces (dome-shaped and saddle-shaped). 

3. <span>Describe two behavioral adaptations that Darwin observed.
</span>
a. <span>The marine iguanas have developed several ways of coping with the cold. At night, they huddle together for warmth. 
b. </span>In the face of famine, the marine iguanas have adapted by having the ability to shrink their body size. They are able to grow back to their original size once the food is supply increases.

4. <span>Explain how these observations influenced his theory of evolution?
</span>

These observations led Darwin to believe that if a certain trait is more advantageous in a specific environment, then the carriers of that trait are more likely to survive into adulthood and to generate offspring than those who do not have that trait. Eventually, the advantageous traits for a species will proliferate. Darwin later called this as "survival of the fittest".

6 0
3 years ago
Read 2 more answers
What chromosomes are found in body cells but not sex cells?
Leni [432]
None, egg cells don't have chromosomes. No, sex cells do have chromosomes. meiosis reduces chromosome number so that sex cells (eggs and sperm) have a half set of chromosomes–one homolog of each pair. This is the haploid number.
3 0
3 years ago
Other questions:
  • Which type of molecule that can be found in living things lacks carbon atoms?
    6·2 answers
  • Trypsin is an enzyme that hydrolyzes(1)______________ into smaller subunits called(2)________________. the gelatin contained thi
    15·1 answer
  • What’s the answer to the question
    11·2 answers
  • This question may be completed independently or as a group exercise. You have learned that humans have 46 total chromosomes, and
    10·1 answer
  • Giovanni and his family go on a trip and they drive over a mountain range. Giovanni wonders how the rock they see as they drive
    8·1 answer
  • under normal conditions, which organisms in this community would have the greatest amount of stored energy?​
    10·1 answer
  • Write your question here (Keep it simple and clear to get the best answer) what name iz give to the female part of the flower?
    11·1 answer
  • Which statement best describes cellular respiration?
    9·1 answer
  • The cAMP receptor protein (CRP) is said to be responsible for positive regulation of the lac operon because ________.
    15·1 answer
  • Which level of organization is shown in the image?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!