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
vaieri [72.5K]
3 years ago
9

Read the overview and complete the interactivities that follow. The lac operon consists of a series of genes involved in the bre

akdown of lactose. The expression of the operon is controlled by two regulatory proteins, a repressor and an activator. Together these two regulatory proteins allow the cell to regulate gene expression in response to the levels of glucose and lactose available to the cell. The following questions relate to the lac operon. 1. The Lacl gen makes a repressor portein. True/False, 2.The structural porteins encoded by the lac operon are i lactose synthesis. True/False, 3. The CAP portein is an activator that binds to the operatot.True/False, 4. The product og Lacl is an allosteric protein that can undergo conformotional change when allolactose binds to it.True/False, 5. CAP binding causes the DNA to bend facilitating RNA polymerase binding. True/False
Biology
1 answer:
Ber [7]3 years ago
4 0

Answer:

1 True 2 false 3 false 4 true  5  true

Explanation:

1 The Lac I gene makes repressor protein  True

2 The structural genes encoded by lac operon are involved in lactose synthesis  false

3 The CAP protein is an activator protein that binds to the operator false

4 The product of Lac I is an allosteric protein that can undergo conformational change when allolactose binds to it  True

5 CAP binding causes DNA to bend facilitating RNA polymerase binding True

You might be interested in
Consider the table comparing amphibians and reptiles. Reptiles evolved
bazaltina [42]

Answer:

1) Amphibians have smooth and moist skin while reptiles have dry and scales are present on their skin.

2) Amphibians lay eggs which are very soft so they are covered with a jelly like substance while reptiles also lays egg whose outer covering is tough.

3) Amphibians lays egg in the water while reptiles lays egg on the land.

Examples of amphibians are frog and salamander and examples of reptiles are snake and alligator.

8 0
2 years ago
When adult amphibian skin harbors populations of the bacterium, Janthinobacterium lividum (Jl), chytrid infection seems to be in
ira [324]

Answer:

C: Take infected amphibians and assign them to two populations. Leave one population alone; inoculate the other with Jl. Measure the rate at which infection proceeds in both populations.

Explanation:

In scientific investigations, the best way to determine the effect of certain experimental factor on the population of study is to have a baseline for comparison. This is usually referred to as controlled experiment.

<em>In the case of the observation that chytrid infection in amphibians seems to be inhibited by Janthinobacterium lividum, the best way experimental design is to get a population of amphibians suffering from the disease, divide them into two groups and subject them to the same conditions except the introduction of Janthinobacterium lividum to the skin of one of the groups.</em>

<em>A suitable method can thereafter be employed to measure the rate at which infection proceeds in both population. If indeed, the bacterium has the capacity to inhibit the infection, the rate of infection in the group with the bacterium will be significantly less than that of the group without the bacterium. </em>

The correct option is C.

<em />

3 0
3 years ago
What type of bacteria can be found in pairs, chains, squares of four, cubes of eight, or grape like clusters?
liberstina [14]
Coccus-shaped bacteria can be found in pairs, chains, squares of four, cubes of eight, or grape like clusters. More specificially, this type of bacteria found in pairs is called diplococcia, in chains is called streptococci, in squares of four is called tetrads, in cubes of eight is called sarcinae, and in grape like clusters called staphylocci.
5 0
3 years ago
A construction company used asbestos on many job sites. Asbestos is an example of a
Crazy boy [7]
The correct answer is <span>a. fibrous carcinogen. </span>
4 0
3 years ago
Most adult amphibians breathe how?
nikitadnepr [17]

Answer:

Most adult amphibians can breathe both through cutaneous respiration and buccal pumping though some also retain gills as adults.

Explanation:

5 0
2 years ago
Other questions:
  • Which of the following statements is correct?
    8·2 answers
  • On a cold day let the water in the pan freeze outdoor
    14·1 answer
  • After death, muscle fibers run out of ATP and calcium begins to leak from the sarcoplasmic reticulum into the sarcoplasm. This r
    7·1 answer
  • Systemic anatomy considers the structure of major __________, whereas surface anatomy refers to the study of __________.
    12·1 answer
  • Do people with blue eyes have a lot of melanin
    8·1 answer
  • There are 2 genders change my mind
    11·2 answers
  • A planet has an orbital period of 3.24 years . What is the average distance of the planet from the sun? A.2.19
    6·2 answers
  • Select the correct answer.
    5·2 answers
  • What are the horticultural advantages of producing plants by cuttings rather than from seeds? Can you think of any disadvantages
    15·2 answers
  • Genetic variation among humans is relatively small when compared to other species. Where in the human genome does most of the di
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!