The Lac Operon is a set of genes that controls the production of lactase the enzyme that digests
lactose. In the top picture: The gene is "turned off" resulting in no mRNA being made. In the
bottom picture: The gene is "turned on" allowing the RNA polymerase express the genes,
resulting in production of the lactase enzyme.
which statement is not correct about the lac operon?
Answers
Answer:
The lactose present prevents the production of lactase
Explanation:
This question is describing a set of genes in bacteria called LAC OPERON. Lac operon controls the production of lactase, which is the enzyme that digests lactose. However, this gene can be regulated at the transcription level i.e caused to be transcribed or not depending on certain factors.
According to the question, lac operon, which regulates the production of enzymes will be transcribed and subsequently translated i.e. turned on when there is a substrate (lactose) that the produced enzyme will work on. However, when there is no need of the lactase enzyme or there is absence of lactose (substrate), the lac operon gene is turned off.
Note that, the statement that "The presence of lactose prevents the production of lactase" is not correct.
Related Questions
easy biology question:
Which of the following are not correctly paired with their function:
Golgi body - packaging and transport
Rough ER - modifying lipids
Microtubule - support and structure
Smooth ER - detoxification
will give brainliest! :)
Answers
Answer:
Rough ER - modifying lipids
Explanation:
Rough ER does not modify lipids! Smooth ER does that! Hope this helps :)
What happens during aerobic respiration? А Oxygen is produced. B Glucose is produced. С Lactic acid and oxygen are produced. D ATP, water and carbon dioxide are produced.
Answers
Answer:
Your answer is D).
When can a species develop genetic diversity?
Answers
Answer:
over a long period of time ;)
Explanation:
I know this because another answer said this was the answer and it was answer expert verified... ;)
What type of flow is worse than a normal lava flow?
Answers
Answer: There are two major types of basaltic lava flow, ' a'a and pahoehoe . These are ... Below: A plot of volumetric flow rate vs. average flow-front velocity.
Explanation:
Which of the following is NOT one of Sir Isaac Newton’s accomplishments?
a.He discovered gravity and showed that all objects fall at the same rate regardless of mass.
b.He developed the Universal Law of Gravitation that told the two things gravity depended on.
c.He realized that an object in motion will stay in motion unless acted on by an unbalanced force.
d.He discovered that every action force has equal but opposite reaction force.
Answers
High levels of what substance found in the blood determines diabetes and prediabetes?
Answers
hope this helps!:)
Answer: hemoglobins with sugar attached
Explanation:
how and why is the lion fish detrimental to the local food webs and ecosystems in these waters?
Answers
what internal adaptation allows sugar from the leaves throughout a plant?
a. xylem
b. phloem
c. stem
d. pollen
Answers
Answer:
a. xylem
Explanation:
the vascular tissue in plants that conducts water and dissolved nutrients upward from the root and also helps to form the woody element in the stem.
One change in the body results in another change. This second change reverses the first change in order to maintain homeostasis. This sequence describes a type of
Answers
Answer:
Feedback loop
Explanation:
A feedback loop is a process in which the body tends to return to homeostasis if it deviates from normal conditions.
A feedback loop consists o three components a receptor, a control center and an effector.
There are two types of feedback loops namely, positive feedback loop and negative feedback loop.
In a negative feedback loop, the effect of the stimulus is to shut off the original stimulus or reduce its intensity, while in positive feedback loop, intensifies a change in the body's physiological condition.
How is cellular respiration a chemical process in which the bonds of food and oxygen molecules are broken and the bonds in new molecules are formed resulting in a release of energy
Answers
Here is some information you need to answer this question:
Cellular respiration equation:
C6H12O6+6O2 -> 6CO2+6H2O
Cellular respiration breaks the glucose (C6H12O6) molecules for energy and new molecules (CO2 and H2O are formed as byproduct).
Overall, there is a release in energy, but also more so of a net increase of energy.
I hope that helps!
need help will give brainlist (don't know if a is correct)
Answers
Answer:
Definitely A. is correct. :D
Explanation:
_trophs often make their own food using sunlight,
carbon dioxide, and water.
Any body please help please thank you so muchhhhh
Answers
Answer:
Autotrophs
Explanation:
Hope this is helpful
Help pls very time sensitive due today!!
Answers
Answer:
1 left.
Explanation:
You have 4 particles on the left and 6 particles on the right. An equilibrium state is where both sides would have the same amount of particles.
So 1 particle from the right will have to move to the left.
Think of it this way.
4 does not equal 6.
5 does equal 5
What causes one embryo to develop unique characteristics compared to the embryos of different species?
A. Particles of color are passed from parents to children.
B. Cells that become the colored part of the eye are passed from parents to children.
C. Nothing having anything to do with eye color is passed from parents to children.
D. Molecules (DNA) that contain the information that determines eye color are passed from parents to children
Answers
Answer:
D
Explanation:
Hope this helps
Answer:
d
Explanation:
What type of cellular transport is the teacher demonstrating?
Answers
if a molecule is composed of several amino acids what kind of biomolecule is it
Answers
Answer: protein
Explanation: protein
Amino acids link together to form a protein. A nucleic acid is held together by the sugar-phosphate complex. A protein is held together by the carbon-carbon bonds. The diagram shows the basic structure of a biomolecule.
Answer:
It is a protein.
Explanation:
Hope it helps!!!
Help me please :')
THANK UUU
Answers
Answer:
archea
animal
bacteria
archea
plants
fungi
Explanation:
Bio genius :)
Put the steps of Protein Synthesis below into the correct order.
4 points
Step 1
Step 2
Step 3
Step 4
A Protein
molecule is
produced
An mRNA
molecule is
produced
mRNA interacts
with a Ribosome
DNA interacts
with RNA
polymerase
Answers
Step 2: mRNA molecule is produced
Step 3: mRNA interacts with a ribosome
Step 4 protein molecule is produced
The correct order is DNA interacts with RNA polymerase (1), the mRNA molecule is generated (2), mRNA interacts with a ribosome, and protein is produced (4).
What is transcription?Transcription (gene transcription) is the process by which a fragment of DNA is employed to generate an mRNA.
This messenger RNA (mRNA) then travels to the ribosomes in the cytoplasm to generate a protein.The process of translation refers to the protein synthesis by an mRNA template.In conclusion, the correct order is DNA interacts with RNA polymerase (1), the mRNA molecule is generated (2), mRNA interacts with a ribosome, and protein is produced (4).
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2. The stems, leaves, and reproductive organs of a plant can all be considered a
part of which plant system?
O A vascular system
O Broot system
O C shoot system
O D endocrine system
3. If the xylem in a young tree is damaged, which process is first affected?
O A performing photosynthesis
O B transporting water to the leaves
O C transporting sugar to the roots
O D absorbing water from the soil
Answers
2: C shoot system
3: B transporting water to the leaves
Answer:
2. shoot system
3. transporting water to leaves
Explanation:
Mendel wanted to find out if the pattern of inheritance for one trait affected the pattern of inheritance for another. What experamint did he perform to test this idea
Answers
Answer: He performed dihybrid crosses
Explanation:
Dihybrid cross is simply refered to as a cross that is done for two genes that are different with regards to their traits. For example, if we cross two maize plants which have different shapes and color let's say that one is white and round while the other maize's colour is yellow and its shape is wrinkly.
Since Mendel wanted to find out if the pattern of inheritance for one trait affected the pattern of inheritance for another, the experiment performed will be dihybrid crosses.
2. The breeding of two plants is called a
crossing over
cross
intertwining
mixing
Answers
Answer:
I am by no means 100% on this but I think its Cross, its usually called crossing breeding but out of those i would say cross.
I Hope This Helps :)
If a SARS-CoV2 virus were to mutate and become and become better at attaching to respiratory cells, how would natural selection lead to this mutant virus becoming the dominant virus type? Use the four steps of natural selection in your response: overpopulation, genetic variation, competition, differential reproductio.
Answers
Answer:
Mutations leading to the better attachement of virus to the host cell would allow the virus to spread the infection and leave more progeny. The reproductive fitness of mutant viruses would allow the mutation to spread.
Explanation:
1. The organisms with same resource requirement compete with each other. Viruses are not living things but once inside the host cell, they behave like living things. Rapid multiplication of virus overpopulate the host cells.
2. Genetic variations are added to the viral progeny by random errors during replication of the viral genome. These random variations may impart beneficial trait, harmful feature or remain neutral. If a random mutation in the SARS-CoV2 virus allows it to adhere better to the cells of the respiratory system, the virus would be better able to infect these cells to spread the infection. Once inside the host cells, the mutant virus would leave more progeny. On the other hand, the wild type virus that lack this mutation would have lesser chances of entering the host cells and may or may not replicate.
3. The progeny of the mutant virus would compete better with the non mutant ones due to the presence of same mutation.
4. Differential reproduction and more progeny of the mutant virus would spread the mutation among the virus.
One piece of evidence that supports the modern theory of evolution is the presence
of similar structures that serve different functions in different organisms.
What is the term used to describe these structures?
embryological structures
analogous structures
vestigial structures
homologous structures
Answers
Answer:
Analogous structures.
Explanation:
Please mark brainliest
PLEASE HELP! Brainlest to first correct answer.
(blank) means to be composed of one cell.
(blank) means to be composed of many cells.
Answers
Answer:
✔ Unicellular
means to be composed of one cell.
✔ Multicellular
means to be composed of many cells.
Explanation:
edge 2022
Unicellular means to be composed of one cell, while multicellular means to be composed of many cells.
What are cellular organisms?Cellular organisms are living beings that consist of one or more cells. Cells are the basic unit of life and the building blocks of all living organisms. Cellular organisms include all living things from bacteria to complex multicellular organisms such as plants and animals.
Cells have a variety of structures and functions depending on the type of organism they belong to. In unicellular organisms, such as bacteria, a single cell performs all the functions required for life. In multicellular organisms, cells are specialized to perform different functions, such as carrying oxygen in red blood cells or detecting light in the retina of the eye.
Cellular organisms have the ability to reproduce, grow, and respond to their environment. The study of cellular organisms is fundamental to the fields of biology, medicine, and biotechnology.
Learn more about cellular organisms, here:
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what are the three domains in the new system of taxonomy.
Answers
Answer:Domain is the highest taxonomic rank in the hierarchical biological classification system, above the kingdom level. There are three domains of life, the Archaea, the Bacteria, and the Eucarya.According to this system, the tree of life consists of three domains: Archaea, Bacteria, and Eukarya. The first two are all prokaryotic microorganisms, or mostly single-celled organisms whose cells have no nucleus. All life that has a cell nucleus and eukaryotic membrane-bound organelles is included in Eukarya.
Explanation:
hope this helps have a great night ❤️❤️❤️❤️
The patient recovers his/her strength and return to his/her normal state of health.
Answers
Answer:
good job
Explanation:
but what does this mean
7. Which is an example of an organ system?
muscles
lungs
blood vessels
circulatory
Answers
Answer:
circulatory
Explanation:
contains the heart, lungs and blood vessels
true or false: Plant cells need centrioles in mitosis.
Answers
Al examinar la aleta de un pez primitivo, los científicos encontraron similitudes entre su estructura ósea y la de los reptiles, las aves y los mamíferos modernos. ¿Que tipos de evidencias describe este caso?
Answers
Answer:
evidencia de un antepasado común entre grupos de vertebrados (gnatóstomos)
Explanation:
En el estudio comparativo arriba descripto, se encontraron semejanzas que provienen de un antepasados común. Este tipo de evidencia se conoce como homología, es decir, semejanza entre diferentes grupos de organismos causada por un mismo origen evolutivo. Los gnatóstomos (vertebrados con mandíbula) conforman un grupo de organismos el cual incluye peces óseos, peces cartilaginosos, anfibios, reptiles, aves y mamíferos. En este caso, las extremidades del grupo de los gnatóstomos (las cuales tienen como origen común la aleta de un pez primitivo) son similares porque son estructuras homólogas.
Explain the consequences of an increase of two degrees Fahrenheit.
Answers
Answer:I think it was The Heat waves can be dangerous, causing illnesses such as heat cramps and heat stroke, or even death. Warmer temperatures can also lead to a chain reaction of other changes around the world. That's because increasing air temperature also affects the oceans, weather patterns, snow and ice, and plants and animals
Explanation:
hope this helps have a nice night ❤️❤️❤️
