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3 years ago

1 point

Biology

1 answer:

8090 [49]3 years ago

8 0

Answer:

1. Embedded in the plasma membrane

2. There is no diagram attached but the question can be answered based on general knowledge. The answer is Golgi apparatus/body.

Explanation:

1. Cholesterol is fat molecule produced in the Smooth Endoplasmic reticulum of animal cells. It is then transported to the plasma membrane, where it plays a vital role in the functionality of the plasma membrane. Hence, embedded in the plasma membrane of an animal cell is CHOLESTEROL, in addition to phospholipids.

2. The Golgi apparatus is an organelle in eukaryotic cells that functions in the modification and packaging of protein and lipid molecules produced by the RER and SER respectively.

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Each transfer RNA requires at least four specific recognition sites that must be inherent in its tertiary structure in order for

Jet001 [13]

Answer: The options are not included.

But the sites are;

Interaction with ribosomes.

Interaction with aminoacyl tRNA

synthase.

Attachment of the specific Amino acid.

Interaction with codon.

Explanation:

Transfer RNA is a type of RNA that help to translate messenger RNA sequence into protein. Each tRNA have two major areas; the anticodon and region for attaching specific Amino acids.

tRNAs function at specific sites in the ribosomes during mRNA deciding.

The four specific recognition sites of trna that must be inherent in it's tertiary structures in order for it to carry out it's role are;.

Interaction with ribosomes.

Interaction with aminoacyl tRNA synthase.

Attachment of specific Amino acid.

Interaction with codon.

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3 years ago

Which statement best illustrates the function of RNA in relation to DNA and proteins? A. Proteins make DNA, which then creates R

forsale [732]

Proteins make DNA which then creates RNA.

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3 years ago

Which table is correct about energy formation in plants?

erma4kov [3.2K]

Answer:

Explanation:

Photosynthesis the process where a plant makes energy to store it and use it and keep aking more to keep itself alive. C is the only one the says photosynthesis and has the right organs and products in the right spaces. The plants leaves are what make the energy. They need the sun (energy source) to make the sugars (energy product) that they need to survive.

8 0

3 years ago

HELP PLEASE NEED ASAP

Lunna [17]

7 Herbivore
8 does not

4 0

3 years ago

Correctly identify each of these definitions or examples as either depolarization or hyperpolarization of the plasma membrane. 1

natulia [17]

Answer:

hyperpolarization
depolarization
hyperpolarization
depolarization
hyperpolarization
depolarization
depolarization

Explanation:

The resting membrane potential is balanced by ion leakage and ion pumping, to get an electrical signal started the membrane potential has to lose its balance. This starts with a membrane channel opening for Na+ since Na+ concentration is higher outside the cell, ions will rush into the cell. This will change the relative voltage inside the cell. The resting potential has a voltage of -70 mV, the sodium cation entering the cell cause it to become less negative. This is known as depolarization.

The concentration gradient for Na+ will continue to enter the cell making the voltage to become positive reaching +30 mV. At the same time, this happens, other voltage-gated channels are also opening, a concentration gradient acts on K+, as well, as it leaves the cell, it takes a positive charge with it making the membrane potential to move back to its resting voltage of -70 mV. This is called repolarization.

For potassium ions to reach equilibrium the membrane voltage needs to be below -70 mV, this leads to a period of hyperpolarization that occurs while the K+ channels are open.

I annexed an image that illustrates this action potential process.

Considering the information given during depolarization there's an increase in the number of sodium leak channels (7) making the inside of the cell more positive (2) increase in the membrane potential (4), this also implies a decrease in the extracellular concentration of potassium (6)

Meanwhile, during hyperpolarization an increase in the extracellular concentration of potassium (3) decreases the membrane potential (1) making the inside of the cell more negative (5).

I hope you find this information useful and interesting! Good luck!

4 0

3 years ago