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lina2011 [118]
3 years ago
6

While studying pharmacology, the nursing student learns that a naturally occurring narcotic drug with analgesic and antitussive

effects is:
Biology
1 answer:
Elden [556K]3 years ago
4 0

Answer:

Codeine

Explanation:

Codeine is an opiate and is used to treat mild and moderate pain. It is also the main ingredient in prescription based cough suppressant. It belongs to a class of drugs known as opioid analgesics.

Codeine is a naturally occurring phenanthrene alkaloid with opioid agonist and can be extracted directly from the plant although most codeine is synthesized from the opium poppy.

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*1* Provide labels for parts number 3,5 and 6
Mrrafil [7]

Answer:

3 is cell membrane, 5 is nucleoid and 6 is plasmid.

Explanation:

Structure 3 is cell membrane, structure 5 is nucleoid and structure 6 is plasmid. The structure 4 is cell wall which function is to protect the bacterial cell from outside environment.  Bacteria develop resistance to antibiotics due to mutation which change its features. The same type and regular use of antibiotics leads to develop resistance in the bacteria. Plasmids can be used in the production of insulin for diabetics because plasmid has the ability to produce many copies of certain genes.

3 0
2 years ago
Plants growing high up on mountains tend to be much smaller than those growing at sea level. This is because the rate of photosy
sladkih [1.3K]

Answer:

CO2

Explanation:

4 0
2 years ago
Cellular respiration allows organisms to release the energy stored in the chemical bonds of glucose. the energy in glucose is us
Rashid [163]

Answer:

<em><u>Carbon</u></em><em><u> dioxide</u></em>

Explanation:

<h2><em><u>hope</u></em><em><u> it</u></em><em><u> helps</u></em><em><u> you</u></em><em><u><</u></em><em><u>3</u></em></h2>
6 0
2 years ago
In freshwater snails, pigment color is influenced by two genes. If two heterozygous pigmented freshwater snails were crossed and
Arada [10]

Answer:

a. (A_B_),(A_bb)(aaB_)(aabb)

Explanation:

This scenario is an example of recessive epistasis.

It involves two recessive alleles concealing the expression of an allele at varying locus.

The 9:7 ratio seen in this case is a rare form of epistasis known as duplicative recessive epistasis (a situation in which the other gene expression are masked due to the effect of either aa or bb presence on them).

In this scenario, if snails possess two copies of one or the other allele I.e allele a or allele b, pigment production would be inhibited leading to albino individuals.

A recessive phenotype is seen for a homozygous recessive gene at Gene A or Gene B.

Therefore, the genotypes of the offspring is AABB, AaBB, AABb, aaBb, aaBB, AAbb, Aabb and aabb.

7 0
3 years ago
Read 2 more answers
Different plant species require different amounts of direct sunlight in order to flower. A student designed an experiment to det
Gnoma [55]

Answer:

Independent variable: LENGTH OF EXPOSURE TO DIRECT SUNLIGHT

Dependent variable: PRODUCTION OF FLOWERS

Control group: THE GROUP OF PLANT THAT WASN'T EXPOSED TO SUNLIGHT i.e. 0 hours

Experimental group: THE GROUP OF PLANTS THAT WERE EXPOSED TO SUNLIGHT

Constant: THE SAME PLANT SPECIES

Explanation:

Independent variable is the variable that the experimenter changes or manipulates in an experiment. In this experiment, the experimenter exposes the specific plant species to sunlight at different length of time, hence, the LENGTH OF EXPOSURE TO DIRECT SUNLIGHT is the independent variable.

Dependent variable is the variable which is measured in an experiment. In this experiment, the measured/dependent variable is the PRODUCTION RATE OF FLOWERS by the plant species.

Control group is the group in an experiment that does not receive the variable being tested. In this experience, the control group is THE GROUP OF PLANT THAT WASN'T EXPOSED TO SUNLIGHT i.e. 0 hours

Experimental group is the group of am experiment that is exposed to the experimental treatment (sunlight). In this case, the experimental group is THE GROUP OF PLANTS THAT WERE EXPOSED TO SUNLIGHT.

Constants are variables of an experiment that must be kept unchanged for all groups throughout the experiment in order not to affect the experiment's outcome. In this experiment, the constant is THE SAME PLANT SPECIES used,

3 0
3 years ago
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