Inside a prokaryote such as e. coli, an opera on controls for the production of the amino acid tryptophan. what occurs in the cell in order to turn off the production of tryptophan.

Answers

Answer 1
Answer: Trp operon is regulated so, that when tryptophan is present in the environment, the genes for tryptophan are not expressed. 

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Describe the difference in the pH values between the contents of the stomach and duodenum

Answers

The pH within the stomach is much more acidic than the pH within the duodenum as the duodenum contains an alkaline solution to neutralise the acidity

Why would a lack of neurotransmitters change the function of the brain?

Answers

Neurotransmitters, also known as chemical messengers, are endogenous chemicals that enable neurotransmission....

Yo! :D So basically if somebody LACKS neurotransmitters, it means that the brain will not receive certain messages and the function of the brain is going to change by what messages it gets. 

Why would it change the function?

Answer: Because the brain only reacts to the messages it receives by neurotransmitters. :)

As energy moves in waves through the water, the water movesa. in waves toward shore.
c. in the direction of the waves.
b. in a small circular movement.
d. against the current.

Answers

As energy moves in waves through the water, the water moves in a small circular movement. 

B      In a Small Circular Movement

Amylase becomes denatured at a temperature of 80c. During an experiment to study the effect of varying temperatures on enzyme activity, amylase's reactivity with starch was measured at a body temperature of 37c and then again at an increased temperature of 42c. How would this increase in temperature affect the experiment?

Answers

Answer:

The rate of reaction will increase

Explanation:

Temperature is known to affect the rate of the reaction. Generally, chemical reactions depend on thermal activation. It means that an increase in temperature also increases the kinetic energy of the reactants. Increasing the temperature increases the reaction rate due to the increase in the number of molecular collisions between reactant molecules. The speed of a particle is directly related to its kinetic energy and thereby an increase in temperature also results in an increase in the amount of collisions between molecules per unit of time.

Birds in the chaparral biome have adapted to living _______.a.
in trees
b.
in burrows
c.
on the ground
d.
through cool summers

Answers

The correct answer is option C

The birds are adapted to live on the ground as this biome is grassland and have few variety of trees.

The trees there are scrub oaks, olive trees chamiso cork, pines, cork et cetera. Mainly this biome has shrubs and less number of trees.

The amount of rainfall that this biome receives is also very less so the trees are not very common there for the birds to survive.

Hence, birds are adapted to live on the ground and prey during night time.

the correct answer is C. on the ground

A root is absorbing water from the soil. Which route will the water travel inside the root? A. Cambium --> phloem --> xylem --> stele --> endodermis --> cortex --> epidermis/// B. Xylem --> phloem --> endodermis --> stele --> epidermis --> cortex --> cambium ///C. Epidermis --> cortex --> endodermis --> stele --> xylem --> phloem --> cambium

Answers

The router through which water will travel inside the root is Xylem --> phloem --> endodermis --> stele --> epidermis --> cortex --> cambium. The correct option among all the options that are given in the question is the second option or option "B". I hope that this is the answer you were looking for and it has helped you.

Answer:

Option B, Xylem --> phloem --> endodermis --> stele --> epidermis --> cortex --> cambium ///

Explanation:

The start of water transportation via roots takes place through the Xylem as these are the specialized cell in roots to intake water from the ground. These cells are arranged in the form of layer and filters the water before transporting. After the filtration in Xylem, water then passes to phloem (which are also part of conducting system of plants and runs parallel to the xylem). After the phloem,  water then goes to the central part of the root which is known as stele and then it reaches the epidermis. From epidermis , absorbed water then goes to the cortex of other tissues and organ and finally it  reaches the cambium.

Hence, option B is correct