PLEASE ANSWER I NEED HELP I DONT WANNA TAKE BIO AGAIN

how does the operator region of dna work to regulate gene expression?.

Answers

Answer 1

Answer:The promoter is found in the DNA of the operon, upstream of (before) the genes. ... Some regulatory proteins are repressors that bind to pieces of DNA called operators. When bound to its operator, a repressor reduces transcription (e.g., by blocking RNA polymerase from moving forward on the DNA).

Explanation:


Related Questions

Some plants respond to an external stimulus - such as
sunlight, water, or gravity - by growing or moving in a
certain direction.
Which term describes this type of plant response?
A. Tropism
O B. Nastic movement
C. Transpiration
D. Dormancy

Answers

Answer:

This type of plant response is A. Tropism

Answer: The answer is in the picture

Explanation:

espero que esto ayude <3

Hope this helps <3

Number 6 please answer

Answers

___________________________________________________________

Crab Rave

___________________________________________________________

Answer:

the answer is A.

Explanation:

Ive taken this test before like last week so y E a h

GIVING BRAINLIEST!!!

What is a similarity between reduced space and a lack of food?

A) They both cause animals to move where there are less resources.
B) They both affect prey more than they affect predators.
C) They can both cause animals to move to a new environment.
D) They both affect plants more than they affect animals.

Answers

its is the third letter in the alphabet [aka c]

The similarity between reduced space and a lack of food is the option "C" they can both cause animals to move to a new environment.

How does population affect resources?

Prompt population growth continues to be a significant underlying force of environmental degradation and a hazard to the sustainable use of natural resources.

It diminishes the quality and quantity of natural resources through overexploitation, intensive farming and land fragmentation.

Thus, option "C" is correct.

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Which of the following describes a mutual relationship?
A pack of hyenas hunt together so they can attack larger animals.
Ants drink nectar from an acacia tree and protect the tree from harmful insects.
A flock of seagulls fly together to reduce the amount of air resistance they feel.
A grasshopper and a rabbit eat different types of plants to avoid competition.

Answers

Answer:

Your answer would be A: A pack of hyenas hunt together so they can attack larger animals.

why it is virtually impossible for a baby girl to be born with Norrie disease.

Answers

Answer:

The gene that has the wrong plan for the important growth factor in Norrie's Disease is on the X chromosome. If a girl (XX) has one X chromosome that does not work she will be protected from developing Norrie's Disease because she has a protective spare.

Explanation:

hope this helps!

Answer: Norrie disease almost entirely affects males.

Explanation: Due to the X-linked recessive pattern of inheritance, Norrie disease affects almost entirely males. Only in very rare cases, females have been diagnosed with Norrie disease; cases of symptomatic female carriers have been reported.

What are the three types of forests age and structure? ​

Answers

Answer:

Tropical rain forests grow around the equator in South America, Africa, and Southeast Asia,  The temperature is stable year-round, around 27°C (60° Fahrenheit). As you can tell from the name, it rains a lot in these forests. Most tropical forests receive at least 200 cm (80 inches) of rain in a year. Tropical forests generally have a rainy and dry season. Temperate forests occur in the next latitude ring, in North America, northeastern Asia, and Europe, temperature ranges from -30 to 30°C (-22 to 86 F) and the forests receive 75-150 cm (30-60 in) of precipitation per year,

Explanation:

what is the shape of the bacteria thiobacillus​

Answers

Answer:

this bacteria has a rod shaped form

Answer:

rod-shaped

Explanation:

Bacteria in the genus Thiobacilli are classified within the order Pseudomonadales. They are small, rod-shaped cells (0.5 by 1–3.0 µm) which may be motile or nonmotile. Motility is due to a single polar flagellum. Bergey's Manual (1957) lists nine species, most of which are aerobic.

What is a limiting factor and how can limiting factors limit the size of a
population?
A. A resource that is so scarce (in restricted quantity) that it limits the size of a
population is called a limiting factor. Any single resource can be a limiting factor
to a population size. For example, the amount of water available can affect the
number of plants that can grow in an area.
B. A resource that is so plentiful that it limits the size of a population is called a
limiting factor. Any single resource can be a limiting factor to a population size.
For example, the amount of water available can affect the number of plants that
can grow in an area.

Answers

Answer:

A. A resource that is so scarce (in restricted quantity) that it limits the size of a population is called a limiting factor. Any single resource can be a limiting factor to a population size. For example, the amount of water available can affect the number of plants that can grow in an area.

HELLLPPPPPPP MEEEEEE PLZZZZZZZ HURRYYYY!!!!!!!!

What is a climax community?

A.When succession is complete and biodiverse sustainability has been reached.
B.When limiting factors and interactions of organisms create balance within a community.
C.When the maximum capacity of organisms is reached within a community.
D.All of the above are correct.

Answers

Answer:

B. When limiting factors and interactions of organisms create balance within a community.

Predict the genotypic ratios of the offspring from crossing the following:

Tt x Tt

1:2:1
3:1
9:3:3:1
1:4

Answers

Answer:

1:2:1

Explanation:

1 chance of having the genotype TT

2 chances of having the genotype of Tt

1 chance of having the genotype of tt

HELP I'LL GIVE BRAINLIEST

Which statement best describes a required component of cell differentiation?
A. The transcription of the myoD gene.
B. The selective loss of certain genes from the genome.
C. The production of tissue-specific proteins.
D. The movement of cells.

Answers

D.The movement of cells <3

Which is the best example of a response to an external stimulus?

drinking water after a long run
avoiding the sun by looking for food at night
a hungry bear hunting for food
falling asleep in the treetops of a forest

Answers

Answer:

its a or b most likely a tho

Explanation:

Answer: B

Explanation:

Use the Weather probe to measure the land-air and ocean-air temperatures. What are these temperatures at this time?

Answers

Answer:

Use the Weather probeto measure the land-air and ocean-air temperatures. What are these temperatures at this time? 29.1 degrees and 22.2 degrees, respectively. C.

Explanation:

By using the Weather probe to measure the land-air and ocean-air temperatures. It is found that the temperature of land air is found be 29.1°C and the temperature of ocean air is found to be 22.2°C.

What is a weather probe?

A weather probe may be defined as an observation post where weather conditions and meteorological data are considerably observed and recorded under controlled conditions. While weather governs the state of the air and atmosphere at a particular time and place.

According to the context of this question, a weather probe determines a facility, either on land or sea, with instruments and equipment for measuring atmospheric conditions to provide information for weather forecasts and to study the weather and climate.

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Which statement describes landforms

Answers

You didn’t post answers
No statements but a landform is a natural or artificial feature of the solid surface of the Earth or other planetary body. Landforms together make up a given terrain, and their arrangement in the landscape is known as topography.

What are some negative impacts of having this life cycle that might have contributed to a decline in the dragonfly population?

Answers

Answer:

Dragonflies are important for our environment.

Explanation:

Dragon flies belongs to the ancient family of insects. They are found on every parts of the world and have been from around 300 millions years ago. There are more than 5000 different species of them found in different parts of the world. Conserving dragonflies is important as they considered as a valuable environmental indicators.

Dragon flies are found in the areas where water is available and near grasslands. Their life cycle is an example of an incomplete metamorphosis. The dragon flies lays their eggs near the water or in the water. Dragon flies spends most of the life time as a nymph in the water where they turn into an adult and leave the water. The dragon flies rely on the aquatic ecosystems all through their life. Thus dragonflies are an important indicators of the environment and water quality.

Most of the life cycle of the dragon flies depend on the availability of water and its quality. Polluting water and destroying their habitat will result in the decline of the population of the dragon flies.

Finally, the old lady crossed the street safely and Juan was able to reach school on time

Answers

Answer:

Ok

Explanation:

Good job to the old lady

And Good job to Juan too for reaching school on time

answer all 3 please

Answers

Answer: 1. Earthquake

2. Lava

3. Divergent Boundary

Explanation:

Does anyone have a course hero account?

please give me your login or search Copy of Amoeba Sisters Video Questions-Mendelian Genetics.docx please it would help me out

Answers

Answer:

What?

Explanation:

Can somebody please answer this quickly?pleaseeeeee

Answers

B. Without enzymes, chemical reactions would not occur quickly enough to sustain life.

In cherry tomatoes, red color (R) is dominant to yellow color (r). If two heterozygous plants are crossed, what percentage of the offspring will be yellow?

Answers

Answer:

50

Explanation:

If you cross two heterozygous tomato plants, you get four base genotypes of (Respectively,) RR, Rr, Rr, and rr. That makes your percentage A. 50%.

Explain h0mozygous and heter0zygous?

If a dominant red fruit (RR) plant is crossed with a recessive over yellow fruit (rr), then the phenotype will be red fruit and the genotype Rr. It is a case of complete dominance.

In diploid organisms (2n), an individual is homo-zygous when it carries two copies of the same gene variant (i.e., the same allele).

Moreover, an individual is heter0zygous when it carries two different alleles for the same gene locus.

In complete dominance, the dominant allele completely masks the expression of the recessive allele in heter0zygous individuals.

Thus, That makes your percentage A. 50%.

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4. Lunar eclipses can only happen when Earth is in between the sun and
the moon.*
O a. True
O b. False

Answers

Answer:

the answer to this is True

Answer————> A. True

A ________ can contain many ecosystems?

A. habitat
B. ecosystem
C. biome
D. population

Answers

Answer:

C. Biome

Explanation:

Hope this helps!

Define light reaction.
Define dark reaction.
I am in search of perfect answer, otherwise i'll report it.​

Answers

➜ A chemical reaction which take place only in the presence of light, is called light reaction or light dependent reaction.

• It takes place in grana of chloroplast.

➜ A chemical reaction which can take place even in the absence of light, is called dark reaction or light independent reaction.

• It takes place in stroma of chloroplast.

Remains, impressions, or traces of an organism that lived in the past
O Sedimentary Layers
O Fossils
O Diversity
Extinction
O Fossil Record

Answers

Answer:

Fossils

Explanation:

Remains, impressions, or traces of an organism that lived in the past Fossils.

Answer :

Fossils

Fossils are the remains of living things turned into mineral stones

There are many kinds of fossils. Fossils can be divided into several parts

Sory if wrong :)

A table with four organisms and their primary role in an ecosystem is shown.
Common Name
Role in Ecosystem
Kingfisher
Carnivore
Black fly larvae
Herbivore
Trout
Carnivore
Algae
Producer
Based on the table, which trophic pyramid is correct?

Answers

Answer:Each and every one of us have several roles. Organisms in a community play other roles too. An organism's role within an ecosystem depends on how it earn its nutrients. Organisms collect their nutrients in very different actions, so they have different roles in an ecosystem.

Explanation:  

The food chain describes who eats whom in the wild. Every living thing—from one-celled algae to giant blue whales—needs food to survive. Each food chain is a possible pathway that energy and nutrients can follow through the ecosystem.

For example, grass produces its own food from sunlight. A rabbit eats the grass. A fox eats the rabbit. When the fox dies, bacteria break down its body, returning it to the soil where it provides nutrients for plants like grass.

Of course, many different animals eat grass, and rabbits can eat other plants besides grass. Foxes, in turn, can eat many types of animals and plants. Each of these living things can be a part of multiple food chains. All of the interconnected and overlapping food chains in an ecosystem make up a food web.

The producer, the algae, is found at the base of the pyramid, and the black fly larva (an herbivore) is found above it. On the third trophic level, there are carnivores such as the trout, and the kingfisher is on the fourth level.

What is the ecological pyramid?

The ecological pyramid is divided into several types, including the pyramid of numbers, the pyramid of energy, and the pyramid of biomass, and the characteristics of the pyramid vary by ecosystem. The pyramid consists of producers at the basal level, which is the algae, and they produce most of the energy in the ecosystem.

The energy and food are then transferred to the second trophic level, the herbivore level of black fly larvae. The third level is the carnivore level (primary carnivore), where the trout eats the herbivore (black fly larva), and the fourth level is the kingfisher, where it eats the primary carnivore, which is the trout, and this results in the pyramid starting with a broad base of producers and eventually narrowing towards the apex.

Hence, the pyramid begins with a producer (algea), then the herbivore, then the trout, and finally the kingfisher.

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When referring to mitosis where do the Chromosomes from during metaphase

Answers

Answer:

During metaphase, the cell's chromosomes align themselves in the middle of the cell through a type of cellular "tug of war." The chromosomes, which have been replicated and remain joined at a central point called the centromere, are called sister chromatids.

This theory proposes that throughout geological time, biological species gradually undergo changes that leads to speciation known as ____________________

Answers

punctuated equilibrium (also called punctuated equilibria)
I think it’s punctuated equilibrium

Which of these decomposers has a muscular foot to move around that are found worldwide wherever there is sufficient moisture and who eat plant particles from rocks, soil, seaweed and other objects, and eat animals that don't move. They recycle nutrients in your garden after digesting the rotting plants after the harvest.

Question 1 options:

fungi


snail


earthworm


pill bug

Answers

Answer:

thats a whole l

Explanation:

does anyone know the answer to this?

Answers

Answer:

hello! it is A.

Explanation:

during mitosis the cell divides into two identical daughter cells!

it’s answer D. the chromosomes are copied.

in cellular respiration where do the products go?

Answers

Answer:

The products of cellular respiration are carbon dioxide and water. Carbon dioxide is transported from your mitochondria out of your cell, to your red blood cells, and back to your lungs to be exhaled.

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