answer.
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
AlladinOne [14]
2 years ago
10

Which of these is a characteristic of index fossils?

Biology
1 answer:
algol132 years ago
3 0

Answer:

c is the right answer

Explanation:

You might be interested in
The process of protein denaturation Multiple Choice: a) is only possible in proteins with quaternary structure. b) is permanent
pav-90 [236]

Answer:

The correct option is D.

Explanation:

Protein generally are very sensitive macro molecules; they have specific temperatures and pH that are ideal for their operations, this is especially true for proteins that act as enzymes in biochemical reactions.

There are four different types of structures that a protein can assume, these are primary, secondary, tertiary and Quaternary structure. The structure of a protein determines the kind of function it can perform.

There are some factors that can destroy the structure and functions of proteins, these include excessive heat and pH. A protein is said to be denatured when its secondary and tertiary structure have been disrupted or destroyed. Denaturation does not affect the primary structure of the protein, thus, the peptide bond remains intact.

Denaturation is usually temporary and can be reversed if the factors that cause denaturation is removed, this process is called RENATURATION. Renaturation process allow the protein to refold and resume its functions.  But sometimes,  denaturation  can be permanent and irreversible leading to permanent loss of protein functions.

7 0
2 years ago
A scientist decides to study the effect of salt on a particular type of bacteria. Arrange the steps of the scientific method in
Debora [2.8K]
The scientific method is a problem-solving approach used in Biology and other scientific disciplines. This method has five basic steps which help scientists test their hypotheses. The first step of the scientific method is to make an observation. In this particular example, the scientist observes probably that salt has chemical and physical properties which could affect the life cycle of bacteria. The second step would be to ask a question and that would be to ask whether salt indeed has any effect on that particular type of bacteria that he/she studies. The third step would be to form a hypothesis and that would be to state that the specific bacterial type will be strongly affected by the salt. The fourth step would be to predict that if the scientist exposed this bacterial type to a salty environment, the bacteria would not survive. The fifth and final step is to test this prediction and if the bacteria do not survive, then the scientist can conclude that salt affects this bacterial type. 
6 0
2 years ago
Read 2 more answers
Which factor is not a characteristic of a mineral? a variable chemical composition crystalline structure that forms a geometric
harkovskaia [24]

Answer:Naturally occurring,inorganic substance.

Explanation:

8 0
2 years ago
Read 2 more answers
Which of the following conclusions is most clearly supported by the representations of nucleic acid #1 and nucleic acid #2 ? Nuc
kondor19780726 [428]

Answer:

This question is incomplete

Explanation:

This question is incomplete but the keys words in the question provides an idea of what the completed question is.

There are two types of nucleic acid; ribonucleic acid (RNA) and deoxyribonucleic acid (DNA).

They are both made up of ribose/pentose sugar, nitrogenous base and phosphate group.

The ribose sugar of the DNA is one oxygen less than the ribose sugar of the RNA hence the reason for the name "deoxyribose".

There are five nitrogenous bases namely; adenine, thymine, guanine, cytosine and uracil. They both contain adenine, guanine and cytosine; however, the DNA contains thymine while the RNA contains uracil. Of the five bases, adenine and guanine are the purines (have a double ring structure) while the rest are pyrimidines (have a single ring structure).

The phosphate group here is negatively charged

5 0
2 years ago
Describe Henrietta Leavitt's discovery, and explain why it was so important in the society in which she lived.
spayn [35]
<h2>Henrietta Discovery </h2>

Henrietta Swan Leavitt discovered cepheids in 1908 during the investigation of different stars in the clouds. She published it by working more on it in 1912 and died in December 1921. This discovery was so important in the society in which she lived because the cosmologist of America was known for this discovery of Cepheids which is a relationship between period, luminosity and quivering stars which changes in light.


8 0
2 years ago
Read 2 more answers
Other questions:
  • Which of the following statements correctly explains a wave in the open ocean?
    10·2 answers
  • Which best describes a difference between prokaryotic cells and eukaryotic cells?
    7·2 answers
  • According to sigmund freud, which part of the mind is composed of biological drives and consequently is the source of psychic en
    10·2 answers
  • What is sporolysis?????
    8·1 answer
  • Describe the effect that increasing the calcium ions had on the heart in this activity. how well did the results compare with yo
    5·1 answer
  • How is the muscular foot of a squid different from that of clams and snails
    10·1 answer
  • There are more than 1/4 million species of beetle. Assume the average length of a beetle is 1cm and the average walking speed is
    6·1 answer
  • Nitrogen gas from the atmosphere can be converted into a useable form of nitrogen in the soil by
    7·2 answers
  • Carbohydrates are more easily metabolized than lipids. However, on a gram-for-gram basis lipids provide cells with more ________
    14·1 answer
  • An archaeologist working at a site in Arizona found pottery shards, corn cobs
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!