BIOLOGY COLLEGE

The secretion of hormones by the pituitary gland is an example of _______________.autocrine signaling
paracrine signaling
endocrine signaling
direct signaling across gap junctions

Answers

Answer 1
Answer:

Answer:

The correct answer is the third option - endocrine signaling.

Explanation:

The endocrine signaling takes place when endocrine cell organs or glands release hormones that flow through the bloodstream and that act on distantly located target cells in the body. The endocrine system includes several glands that release or secretes different hormones.

The pituitary gland transfers signals to other endocrine glands to release or inhibit their hormone production according to the brain signals. The adrenocorticotropic hormone (ACTH) is released by the anterior pituitary gland that stimulates cortisol release in the adrenal glands in stressed conditions.

Thus, the correct answer is option third - endocrine signaling.
Answer 2
Answer:

Final answer:

The pituitary gland secreting hormones is an example of endocrine signaling, where hormones are secreted directly into the bloodstream and carried to target cells.

Explanation:

The secretion of hormones by the pituitary gland is an example of endocrine signaling. Endocrine signaling refers to the process where glands secrete hormones directly into the bloodstream, which are then carried to the target cells elsewhere in the body. In contrast, autocrine signaling involves cells responding to their own signals, paracrine signaling refers to cells communicating with nearby cells, and direct signaling across gap junctions involves communication between adjacent cells through specific channels.

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Transposons need to __________________ in order to limit their negative impact on the genome of the host cell. A. control their nucleotide length B. regulate their copy number C. control their target-site choice D. avoid transposing into their own genome

Answers

Answer:

The correct answer is B

Explanation:

Transposons need to regulate their copy number to avoid errors with chromosomal pairing during meiosis and mitosis such as unequal crossover.

A typical example of this error is called the Alu Sequence or Elements. Alu elements contain more than one million copies found everywhere in the genome of human beings.

Many inherited human diseases such as cancer are related to Alu insertions.

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Final answer:

To minimize their negative impact on a host cell's genome, transposons need to regulate their copy number. Unregulated replication could lead to harmful mutations.

Explanation:

Transposons, also known as jumping genes, are sequences of DNA that can move around to different positions within the genome of a single cell. Their movement can cause mutations, which can have negative impacts on the host cell. In order to limit their negative impact on the host cell's genome, transposons need to B. regulate their copy number. If they did not manage this, over-replication of transposons could overload the cell with unnecessary genetic material, leading to harmful mutations or even cancer.

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Pls i’m getting timed :(

Answers

Answer:

i think conversion of mass

Explanation:

How does the ribosome know which protein to make?

Answers

Messenger RNA (mRNA) molecules are long strands of RNA nucleotides that directribosomes to make proteins. They travel from the nucleus to the ribosome. Ribosomal RNA (rRNA) molecules make up part of the ribosomes of the cell in the cytoplasm. Transfer RNA (tRNA) molecules transport amino acids to the ribosomes.

A man with type ab blood and a woman with type b blood have a baby has type o blood. should there be any reason for concern? why?

Answers

Yes, there should be a concern because it was theoretically impossible for type AB blood parent to have a child with type O blood.
Blood type is coded by two alleles, which have three possible type: A, B and O. The O alleles is recessive, so you need two O allele(from both parent) to have type O blood child.
A person with type AB blood type allele should be one A and one B, so it is impossible to get O allele him.

Chytrids have some unique characteristics that are different from the other groups of fungi. What characteristics make them unique?

Answers

The unique thing that can be observed among the Chytrids  that help then to live in their habitat is the possession of a wet flagella.

Fungi are among the kingdoms of living things. Taxonomy is the process of classifying living things into kingdoms, groups and orders.

The unique thing that can be observed among the Chytrids  that help then to live in their habitat is the possession of a wet flagella.

Learn more about fungi:brainly.com/question/1195122

Answer:

Their reproductive cells have flagella and they live in wet places

Explanation:

Although a fetus is relatively protected in its mother's womb, a number of different toxins can harm the fetus. These include lead, mercury, glycol ethers, and many other substances. How do toxins usually reach the developing fetus

Answers

Answer:

Although the blood of the fetus and the mother does not mix,  Simple diffusion across the membrane of the placenta occurs.And since diffusion is the movement of ions and gaseous molecules across the membrane from the higher concentration of the mother blood to the lower concentration of the fetus, toxic chemical are conveyed across.,

Explanation:
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