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tekilochka [14]
3 years ago
8

During transcription, what happens to the rna polymerase if a repressor protein attaches to the operator

Biology
1 answer:
Vitek1552 [10]3 years ago
6 0

If a repressor protein attaches to the operator, RNA polymerase cannot proceed to transcribe key enzymes needed by the organism. This can be seen in the trp operon in E .coli bacteria.

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1. Discuss at least two attributes of a study that you would look for to determine whether or not it is rigorous.
noname [10]

Some of the aspects that help you determine whether a study is rigorous are questions and hypotheses that can be answered, adequated method use, and bibliography.

Rigorous is a term that refers to a quality that focuses on accuracy and precision to comply with norms, precepts, and pre-established rules. This term is widely used in science to refer to the precision of a study or investigation.

Therefore, when it is established that a study is rigorous, its attributes must be taken into account, such as:

- Questions and hypotheses that can be answered: This aspect refers to the investigator having the ability to limit his study so that it is appropriate to do so and does not include too much information that makes his study "impossible".

- Adequated methods use: This refers to using the appropriate methods to reach feasible conclusions, for example, methods of observation, deduction, induction, among others.

- Bibliography: This refers to the research or study being supported by reliable sources so that it is as accurate as the information it provides.

Learn more in: brainly.com/question/14617975

6 0
3 years ago
______ is the process of mitosis and cytokinesis produce two identical daughter cells
RUDIKE [14]

Answer:

Mitotic phase

Explanation:

The mitotic phase is a multistage process during which the duplicated chromosomes are aligned, separated, and moved to opposite poles of the cell, and then the cell is divided into two new identical daughter cells.

The first portion of the mitotic phase, mitosis, is composed of five stages which includes prophase, prometaphase, metaphase, anaphase, telophase , which accomplish nuclear division before reaching the second stage which is cytokinensis which involves the physical separation of the cytoplasmic componenets into two daughter cells.

6 0
3 years ago
Which of the following is not a step in the process of natural selection
Paraphin [41]

Answer:

A step that is not part of natural selection is people select which individuals breed and which ones do not.

Explanation:

Natural selection is a process in which favorable or unfavorable environmental conditions determine the evolution of species, producing differences in their genotype over a long period of time.

As its name indicates, it is a natural selection, in which no intervention by people is contemplated, so that <u>people cannot determine which individuals breed</u>.

Natural selection implies that the characteristics on which the environment influences are inheritable, that there is genetic variability in the population and that the variability of these characteristics implies the ease of reproduction and survival capacity.

<em>The other options do form part of natural selection, since they are based on the three premises of this process: </em>

  • <em>Inheritable characteristics. </em>
  • <em>Genetic variability. </em>
  • <em>The variability of characteristics influences reproduction and survival.</em>
4 0
4 years ago
Which of the following best describes ionic bonding? A. the transfer of valence electrons between atoms to make them neutral B.
ladessa [460]
A :)           the answer is a


7 0
3 years ago
The splitting of a heavy nucleus is called
Viefleur [7K]

Answer:

nuclear fission

7 0
3 years ago
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