It is possible for a repressor to negatively regulate the expression of an operon because: A. the repressor-binding site overlaps the promoter site of the operon, allowing it to physically block the binding of RNA polymerase. B. the repressor induces the expression of the inducer by binding to the promoter that comes before the inducer gene. C. the repressor-binding site on the DNA overlaps with the translation start site, thereby preventing the transcription. D. one of the structural genes expressed in the operon negatively regulates the repressor. E. the repressor physically blocks where the activator should be binding on the operator region.

Answer:

A.

Explanation:

the repressor-binding site overlaps the promoter site of the operon, allowing it to physically block the binding of RNA polymerase.

how do we impact the Earth?​

If you have the template DNA strand with GCG, what is the complementary amino acid after translation?​

What do we make with the energy we get from our food

Oxygen from the air enters the blood stream at what location?
A) Aorta
B) pulmonary vein
C) alveoli
D) pulmonary artery

Pioneer species are species which colonize previously uncolonized land, usually leading to ecological succession. They are the first organisms to start the chain of events leading to a livable biosphere or ecosystem. Why is a lichen most likely to be a pioneer species?

A The mutualistic relationship of species forming a lichen allows it to survive independently.

B The lichen is fast growing and provides a nutritious food source for many other species.

C The lichen does not require sunlight to survive.

D The lichen is a decomposer that digests rocks and forms soil.​

Which of the following is not true concerning tropical plantations?
a.
They are generally found in humid, tropical climates.
b.
Wheat and corn are common products of tropical plantations.
c.
Most crops from tropical plantations are exported.
d.
Cocoa, coffee and tea are common products of tropical plantations.


Please select the best answer from the choices provided

A
B
C
D

ASAP


Which information can best be used as evidence to support
the answer to Part A?
Select all that apply.

A. Desert areas have less precipitation that non-desert areas.

B. Both desert and non-desert plants absorb light from the Sun.

C. Plants in both desert and non-desert areas can grow leaves.

D. Lower temperatures in non-desert areas reduce the rate of evaporation.

E. Desert areas are most often found at low latitudes.

Which of the following best describes the structure of the cell membrane?​

what are milk dairy products meat and beans high in?

Identify the role of the plankton in the full marine chain # 6. For example: Is it a consumer (level of consumer), producer, or decomposer?

what part of Arkansas are the crops grown?

Which observation of a plant supports the inference that photosynthesis can take place? *

A) a strong, sweet smell
B) a rough, dry texture
C) a green color
D) a smooth stem

Identify the structure shown below.

Meiosis requires
divisions of the cell and makes
daughter cells.
O 1:2
0 2:4
2;2.
o
1:4

Which two systems work together to make the body move?
Muscular and Digestive
Digestive and Circulatory
Circulatory and Skeletal
Skeletal and Muscular

Is the trend in biomass in Pyramid X the same as seen in Pyramid Y? Explain your answer.

can anyone pls help me with this?!

Describe how a mutation in the DNA of a cell can affect the functioning of an enzyme.​

Which of the following is an example of mutualism?
A. Twisting about like a high-flying acrobat, the gray flycatcher plucks moths from the air.
B. On the bird feeders of many residents of southern Illinois, people can watch the fox squirrels and gray squirrels fight with each other for the bird seed, while the birds get scared away by the activity!
C. Scratching with great vigor, the chipmunk tried to knock loose the tick stuck firmly to its ear.
D. Some biologists have observed Egyptian Plovers, a type of bird, land on the open mouth of a Nile crocodile without being eaten and remove leeches stuck firmly to the crocodile's gums.

If it is true that global warming is causing climate change, why can't animals adapt to the new conditions?

The blocks above represent ecosystems, with each species type designated by a different color. Which block represents the greatest diversity?
1
2
4
5

Which organelle stores the information that determines an individual's hair 1 point
color?

A.Organelle 1

B. Organelle 2

C. Organelle 3

D.Organelle 4

Construyamos 5 preguntas que nos sirvan para conocer más acerca de qué son las normas y las leyes y para qué nos sirven,

Many scientists worry that the influence humans have on the biogeochemical and hydrologic cycles will cause lasting damage to Earth. Make a list of the activities you perform in a day that may impact one of these cycles. Explain how you are interacting with the cycle and how that could be affecting your local ecosystem. What can you do to decrease your impact?

In which process is carbon NOT released into the environment?

A. exhaling
B. condensation
C. excretion
D. decaying

Genes are portions of
A. DNA
B. RNA

The attraction between hydrogen and oxygen atoms in different water molecules is known as

Which of the following is a secondary consumer in the food web shown above?
A. tadpole
B. frog
C. earthworm
D. algae

many of the molecules found in the body are organic.
A: make an argument for which three biological molecules you feel are the most important for the body.
B: water is inorganic but still essential. could humans live without water? why or why not?​

What would be the difference in the rate of photosynthesis in December compared to July? (Remeber that December has the shortest amount of daylight and July has the longest amount of daylight each day.)