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torisob [31]
3 years ago
11

Holly learned from her science teacher that her height resulted from about 180 genes, each contributing a tiny amount of genetic

information. Holly learned that her height was due to _____.
Biology
1 answer:
Butoxors [25]3 years ago
5 0

Answer:

ADDITIVE GENES

Explanation:

Additive genetic effects results from the singular combination of two or more genes to give the final phenotype, or when alleles of an individual gene combine so that their end-product effects is the total of each allele effects.

Another example of a function of additive genes is the eye colour.

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What large flat muscle moves up and down in order to bring air in and out of the lungs?
Brrunno [24]
The diaphragm is the large flat muscle. hope that helps :)
5 0
3 years ago
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Which of the following statements is most correct regarding the intracellular chemical signals known as "second messengers"? Sel
Mila [183]

Answer:

Cyclic AMP and calcium may be second messengers.

Explanation:

these are signalling molecules that are located inside the cells,They are releases  when cells   are in contact with  signals from an extracellular molecule. the extracellular molecules that cause the chemical  reaction  in an external environment  in the second messenger are called first messenger.

<u>the basic mechanisms of second messenger involve the binding of ligands to the cell membrane receptors( usually a trans membrane protein).causing   conformational  change in the receptor protein. The latter change affect the structural and functional activities of the receptors protein with a consequent  production of second messenger,</u>

<u />

Response of the cells  to the first messenger my cause different form of cellular reactions; the cells may  undergo depolarization  with influx of out flux of ions, differentiate to specialized cells  or migrate to another location.

Examples of first messenger are hormones and neurotransmitters, while calcium ions, cyclic GMP,AMP, diaclyglycerol are examples of first messengers.

Most first messengers are peptide hormones.Some may be streroid, However, the hydrophilic nature of the peptide hormone restrict their movement, at the cell membranes. Therefore most first messengers made of  peptide  are first converted to second messenger to  bring about their signalling effects.The usually mark the beginning of cascade events by second messengers.

Second messengers are usually classified based on their polarity and molecular form this include the

<u> hydrophobic molecules</u> ;diacyglecerol,phosphatdylinotisols. These diffuse  through the membrane  into intramembrane space of cells cause signalling effects in the cell.

<u>the hydrophiliic  molecul</u>es  are  located in the cystol  of cells. Example are  Cylic AMP. GMP, Calcium,

N02, CO,H2S are <u>polar molecules</u> that easily diffuse into the cells to cause signalling effects, they are the third Classification of second messengers.

6 0
3 years ago
Read 2 more answers
Which part of the brain is associated with conscious thought
hichkok12 [17]

Answer:

Cerebral cortex of the Cerebrum

Explanation:

The body directs our body's internal functions. These functions are made possible by four major regions of the brain viz: The Cerebrum, Diencephalon, Cerebellum and Brain stem.

The Cerebrum is the largest brain structure, making up most of the total brain, and a part of the forebrain. The cerebrum's prominent outer portion, the cerebral cortex, not only processes sensory and motor information but also enables CONSCIOUSNESS (our ability to consider ourselves and the outside world), thoughts, emotion, reasoning and memory.

The cerebral cortex is composed of the right and left hemispheres joined by the corpus callosum. Each cerebral hemisphere can be subdivided into four lobes (Frontal, Parietal, Temporal, and Occipital) associated with different functions.

4 0
2 years ago
Where is most of the water on Earth?
s2008m [1.1K]
In the Atlantic Ocean / or Ocean
7 0
3 years ago
Can you help me please
Tcecarenko [31]
From top to bottom, I believe the answers are:
Biologist
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Hydrologist
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