What turns on and off the lac operon

Answers

Answer 1

Answer: off: lac repressor, on: CAP

Explanation:


Related Questions

Where does the carbon used to make glucose come from?
.

Answers

Answer:

answer should be "carbon dioxide"

sorry if I’m wrong! Hope it helped

As carbon dioxide gas levels in the atmosphere increase, the temperature will
1. decrease
2. increase
3. stay the same.
4. The temperature on Earth is not affected by carbon dioxide gas.

Answers

Answer:

2. Increase

Explanation:

Carbon dioxide acts as a greenhouse gas that keeps the heat of the Earth from escaping back into space, much like how the glass of a greenhouse makes it nice and warm and steamy for plants.

Answer:

INCREASE

Explanation:

when carbon dioxide concentrations rise, air temperatures go up, and more water vapor evaporates into the atmosphere—which then amplifies greenhouse heating.

If a windbreak can reduce the speed of wind for distances up to 30 times the height of the trees, how far would theses trees reduce the wind speed if the trees are 17m high)
A. 47m
B. 51m
C. 470m
D. 510m

Answers

Answer:

a

Explanation:

im smart and i know it

Which is the correct order the steps of the Cell Cycle:

A. Cytokinesis-Mitosis-Interphase
B. Mitosis-Interphase-Cytokinesis
C. Interphase-mitosis-Cytokinesis

Answers

Answer: C. Interphase-mitosis-Cytokinesis .

Explanation: Interphase is the "beginning" of the cell cycle, in this process, the cell prepares to go through the division process. Mitosis follows, and cell division occurs. Finally, cytokinesis sells up the process.

c. interphase mitosis cytokinesis

Water availability impacts plant growth and animals who depend on plants for food are interactions between the

Group of answer choices

hydrosphere and biosphere

atmosphere and hydrosphere

hydrosphere and geosphere

atmosphere and biosphere

Answers

Answer:

hydrosphere and biosphere

Explanation:

The spheres of the Earth are lithosphere, biosphere, atmosphere, hydrosphere etc. Hydrosphere refers to the collection of all the water bodies on the surface of the Earth e.g oceans, lakes, rivers etc. On the other hand, biosphere refers to the collection of life on Earth e.g plants, animals, microbes etc.

In this question, Water availability is said to impact plant growth and the animals who depend on plants for food. These water availability and the living organisms (plants and animals) it impacts are interactions between the HYDROSPHERE AND BIOSPHERE.

What is a gene?




a section of a protein that codes for DNA
the alternate version of a trait
the visible trait in the F1 generation
a section of DNA that codes for a specific trait

Answers

Answer:

A gene is an order of nucleotides in DNA or RNA that encodes the structure of a gene product, either RNA or protein. During gene expression, the DNA is copied into RNA. The RNA can be directly functional or be the standard template for a protein that performs a function.

Explanation:

Shout out to Wikipedia.

Answer:

D)

Explanation:

Mistletoe extracts water and nutrients from the spruce to the spruce tree's detriment.

A. Mutualism
B. Commensalism
C. Parasitism

Answers

Answer:

B

Explanation:

Which of the following is not a respiratory organ of the
arthropods?
a. gills
b. book lungs
c. air tubes
d. lungs

Answers

Answer:

D

Explanation:

Arthropods have book lungs, gills, and air tubes but they don't have lungs

Which of these organisms would you find DNA molecules
Only in humans
Only in humans and butterflies
In humans butterflies and trees
And none of these organisms

Answers

You would most likely to find DNA molecules in humans, butterflies and trees because they are all living things.

DNA can be found in humans, butterflies and trees as mentioned in this question.

DNA:

DNA means deoxyribonucleic acid. It is a biological molecule that stores genetic information in living cells.

DNA encodes the genetic information that is passed across to offsprings in all living cells. The genetic information is stored in the nucleotide base sequence that makes up the DNA molecule.

Since DNA (genetic material) is present in every living organism, therefore, DNA can be found in humans, butterflies and trees.

Learn more at: https://brainly.com/question/12499113?referrer=searchResults

Oil does not dissolve in water. Does that mean that it is hydrophilic or hydrophobic? How do you know?

Answers

It means that it’s hydrophilic because things can’t dissolve in water when it’s hydrophilic

This table lists some characteristics of two planets.
Earth
Venus
Mass
5.97 x 1024 kg 4.87 x 1024 kg
8.9 m/s2
Gravity 9.8 m/s2
Diameter 12,756 km
12,104 km
Which statement best explains why an object weighs less on Venus than on
Earth?


A. Venus's diameter is less than Earth’s.

B. An object's weight is the same everywhere in the universe.

C. An object’s mass is the same everywhere in the universe.

D. Venus’s gravitational force is less than Earth’s

Answers

D. Gravitational force.
An objects WEIGHT is determined by the force of gravity on the object. (Force(weight)= mass times acceleration(due to gravity)

Answer:

Its D :)

Explanation:

Took the exam in A P E X

Please help meeeeeee I’m begging you

Answers

Answer:

SIMPLE DIFFUSION.

Illustrations of simple diffusion.

OSMOSIS.

Explanation:

SOMEONE PLEASE HELP ME WITH THIS !!!

Answers

Answer:

D

Explanation:

It is often like this: cell->tissue->organ->system

HELP ASAP PLEASE!!It important

Answers

Answer:

The three main cycles of an ecosystem are the water cycle, the carbon cycle and the nitrogen cycle. These three cycles working in balance are responsible for carrying away waste materials and replenishing the ecosystem with the nutrients necessary to sustain life.

Explanation:

With three foods available, natural selection has favored Flock , which has increased the most in the
first three generations. Meanwhile, Flock has declined the most because its beak was the least
successful phenotype for the food available.

Answers

Natural selection has favored flock X the most.

Flock Z has declined the most.

Natural selection will favor the one who will adapt to its environment.

What is natural selection?Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable.This variation means that some individuals have traits better suited to the environment than others.Organisms which will better adapted to their environment tend to survive and reproduce more than those less adapted to their environment.This process causes species to change and diverge over time.

To know more about natural selection here

https://brainly.com/question/9830102

#SPJ2

Summary of the cell membrane structure.

Answers

Answer: The plasma membrane is composed of a bilayer of phospholipids, with their hydrophobic, fatty acid tails in contact with each other. The landscape of the membrane is studded with proteins, some of which span the membrane. Some of these proteins serve to transport materials into or out of the cell. The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrate groups that are attached to some of the lipids and proteins. A phospholipid is a lipid made of glycerol, two fatty acid tails, and a phosphate-linked head group.

Hope this helps...... Stay safe and have a great day/night!!!!! :D

john comes up with a table he can use to record his data he records all the measurements into his table which step of the scientific method is this?

Answers

Answer:

Gathering and collecting data

Explanation:

Question 21 (1 point)
Which grouping in the animal kingdom is the only one that contains organisms with
vertebrae?
Arthropods
Vertebrates
Annelids
Cnidarians

Answers

answer: Vertebrates

What does impact mean in biology in ur own words?

Answers

Answer:

contact by touch or feeling

Explanation:

What is the role of mutations in creating variation in bird beak types?

Answers

Answer:

In order for a bird's beak to evolve into different a types, a mutation must occur first.

Explanation:

All evolution relies on mutations or changes to the DNA. Bird beaks adapt to the environment to be better suited to obtain food. A bird that used to have a pointy beak for stabbing bugs might move to an area with an abundance of seeds. Their DNA mutates so that their offspring can have short beaks to pick up seeds.

How does a population adapt to sudden changes in the environment? According to the most widely accepted paradigm, random genetic changes (mutations) are the source of heritable changes in a plant or animal’s observable characteristics (phenotype). Phenotype, in turn, is the raw material that is acted upon by natural selection, and the most beneficial adaptations are passed on to successive generations. But there is a problem with this paradigm: adaptive genetic mutations are so infrequent that this scenario cannot adequately explain the speed at which adaptation can occur

Pls help rn I need the answers right now my teacher is gonna call on me plz plz help

Answers

Answer:altitude

Explanation:

Answer:

1.D

2.A

3.C

4.A

5.A

which of the stars is most like Earth's Sun

Answers

Answer:

tau ceti

Explanation:

Over the last several decades, the scientific community has gathered a large amount of information regarding genetics and genetic variation. What is a main source that leads to increased genetic variation?

Answers

Answer:

the answer is Recombination :)

Explanation:

(i just took the test so i know its right)

Originally, only animals that were useful to humans were
domesticated.
O True
False

Answers

The answer is False
The correct answer is false

Which of the following codons would signal a tRNA
molecule carrying the amino acid Lysine (Lys) to enter the
ribosome?
OAAA
O AAG
AAU
Both A and B
All of the above

Answers

Answer:

Both A and B

Explanation:

I hope it helps...

Distinguish between pathology and histology?

Answers

Answer:

The Pathology laboratory consists of two areas: Histopathology and Cytopathology. Histology involves the study of tissue and Cytology involves the study of cells, both of which are derived from various organs of the human body.

can I please get with it ​

Answers

Answer:

Plantets/Stars, Solar System, Galaxy, Universe

Explanation:

Answer:

Planet stars

solar system

Galaxy

Universe

Explanation:

How does the process of gel electrophoresis produce DNA fingerprints? An electric current sorts DNA nucleotides according to their bases. O An electric current cuts a DNA strand into segments of various lengths O An electric current causes segments of DNA to move at different rates O An electric current supplies a charge to uncharged segments of DNA ​

Answers

Answer:

Gel electrophoresis

Explanation:

Gel electrophoresis is a technique used to separate DNA fragments according to their size. DNA samples are loaded into wells (indentations) at one end of a gel, and an electric current is applied to pull them through the gel. DNA fragments are negatively charged, so they move towards the positive electrode.

WILL GIVE BRAINLIEST!!
1. Identify the stages of cell growth and reproduction.

Answers

Answer:

The cell cycle has two major phases: interphase and the mitotic phase (Figure 1). During interphase, the cell grows and DNA is replicated. During the mitotic phase, the replicated DNA and cytoplasmic contents are separated, and the cell divides. ... During interphase, the cell grows and the nuclear DNA is duplicated.

Explanation:

Heat can transfer between two objects touching one another. What type of heat transfer is this? What will the temperature of both objects be after these objects remain in contact for a long period of time?

Answers

Answer:

Heat can transfer between two objects touching one another. What type of heat transfer is this? What will the temperature of both objects be after these objects remain in contact for a long period of time?

Explanation:

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