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dimaraw [331]
3 years ago
8

Sequence of nucleotides in the template (original) strand of DNA: C C G C T A C G T A

Biology
1 answer:
stich3 [128]3 years ago
5 0

Answer:

G G C G A U G C A U

Explanation:

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Which of the following is the most powerful evolutionary force in large populations over time?
DanielleElmas [232]
There is no answer that is right except for C. Natural Selection.

Genetic Recombination doesn't change gene frequency;nor does migration. (Unless it's local)

Mutation could be the answer, but since mutations are too rare to really power Evolution, the only logical answer is Natural Selection.
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3 years ago
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Explain what happens during the three phases of signal transduction.
Morgarella [4.7K]
The three phases of signal transduction is (1) reception, (2) transduction, and (3) response. Reception involves the binding of a ligand, may it be a hormone or a neurotransmitter; to a receptor, may it be a membrane receptor, cytosolic receptor, or a nuclear receptor. After binding of the ligand to the receptor, there will be signal transduction of events that will ultimately form a response. For instance, insulin actin on the insulin receptor will trigger a series of events that will increase the transcription of the gene translating for glucose transporters and ultimately, increase the number of glucose transporters embedded in the cell membrane leading to increased glucose uptake in tissues.
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3 years ago
Portal blood vessels connect two capillary beds found in the ________. A. hypothalamus and thalamus B. anterior pituitary and po
sdas [7]

Portal blood vessels connect two capillary beds found in the hypothalamus and anterior pituitary.

So, the correct option is C.

<h3>Hypothalamus-Pituitary Complex:</h3>
  • The "command center" of the endocrine system is assumed to be the hypothalamus-pituitary complex.
  • In addition to hormones that directly affect target tissues, this complex also secretes hormones that control the production and release of hormones from other glands.
  • Furthermore, the hypothalamus-pituitary complex controls the communications between the nervous and endocrine systems.
  • The hypothalamus-pituitary complex is frequently necessary for the translation of a stimulus into hormones that can start a reaction after it is received by the neurological system.
  • Additionally, the pituitary gland (also known as the hypophysis), a bean-shaped organ hung from the hypothalamus by a stem called the infundibulum (or pituitary stalk), is physically and functionally connected to the hypothalamus.
  • The sella turcica of the sphenoid bone of the skull serves as a cradle for the pituitary gland.
  • It has two lobes, the posterior pituitary (also known as the neurohypophysis), which is made of neural tissue, and the anterior pituitary (also known as the adenohypophysis), which is made of glandular tissue.

<h3>Anterior Pituitary:</h3>
  • The embryonic anterior pituitary develops from the gastrointestinal tract and moves toward the brain as the fetus grows.
  • The pars tuberalis is a thin "tube" that wraps around the infundibulum, the pars distalis is the most anterior, and the pars intermedia is next to the posterior pituitary.
  • Neurons secrete hormones from the hypothalamus, but blood arteries transport them to the anterior pituitary.
  • There is a capillary bridge that links the anterior pituitary and hypothalamus inside the infundibulum.
  • The hypophyseal portal system is the network that enables the delivery of hypothalamic hormones directly to the anterior pituitary without first passing via the systemic circulation.
  • The superior hypophyseal artery, a branch of the carotid arteries that carries blood to the hypothalamus, serves as the system's initial point.
  • The hypophyseal portal system is made up of the superior hypophyseal artery's branches.
  • The portal veins deliver hypothalamic releasing and inhibitory hormones into the anterior pituitary via a main capillary plexus.
  • Anterior pituitary hormones enter a secondary capillary plexus in reaction to hormones being released, and from there, drain into the blood circulation.
  • In the anterior pituitary, seven hormones are produced.
  • Separate hormones produced by the hypothalamus either promote or suppress the anterior pituitary's capacity to produce hormones.
  • The hypophyseal portal system is the route by which hormones from the hypothalamus get to the anterior pituitary.
  • Seven hormones are produced by the anterior pituitary.
  1. Beta endorphin,
  2. prolactin,
  3. thyroid-stimulating hormone (TSH),
  4. adrenocorticotropic hormone (ACTH),
  5. growth hormone (GH),
  6. follicle-stimulating hormone (FSH), and
  7. luteinizing hormone (LH).
  • Because they regulate the activity of other endocrine glands, the anterior pituitary hormones TSH, ACTH, FSH, and LH are together known as tropic hormones.

Learn more about " Anterior Pituitary ":

brainly.com/question/14704975

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6 0
1 year ago
A) What are the dependent &amp; independent variables?
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Answer:

an independent variable is a variable that we choose to change to see that happens. ( eg. the temperature when testing evaporation).

a dependent variable is the variable that we measure. ( so maybe how much water evaporates)

3 0
3 years ago
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Pyrimidines are synthesized through a long series of reactions beginning with the amino acid aspartate. The ribonucleotide CTP i
svp [43]

Answer:

The Correct option is E "End-product inhibition"

Explanation:

the given model is both allosteric hindrance and final result restraint. This is on the grounds that allosteric hindrance is said when the higher centralization of finished result is dependable to give the sign to stop the combination. As the finished result is restraining the combination of its own so it can likewise be called a final result restraint.  

Henceforth, the right choice is (E).

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3 years ago
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