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maks197457 [2]
2 years ago
13

Which cell is the precursor to eukaryotic in evolution of the cell

Biology
1 answer:
masya89 [10]2 years ago
7 0

The first organisms to inhabit Earth were prokaryotes that lived 3.5 billion years ago. prokaryotes are well organised, achieving all of an organism’s life functions within a single cell. These were the precursors to eukaryotic cells

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Robert’s fraternal twin sister Desiree has a diagnosis of schizophrenia. Armend’s identical twin brother, Nigel, also has a diag
ioda

Answer:

The correct option is <em>lower.</em>

Explanation:

Schizophrenia can be described as an inherited disease and it is a type of mental illness. As Armend has an identical twin brother with diagnosis of schizophrenia hence, he will have more chances than Robert whose fraternal twin sister has schizophrenia.

As fraternal twins develop from two different eggs hence, the chances in them having the same disease will be lower. Identical twins develop from the same egg, hence they will have more chances of having the same inherited disease.

5 0
2 years ago
Check all of the statements that are true regarding keratinized stratified squamous epithelium.
strojnjashka [21]

Answer;

-Keratinized stratified squamous epithelium forms the epidermis of the skin.

-In keratinized stratified squamous epithelial tissue, the cells on the apical (outer) surface are dead.

Explanation;

-Stratified squamous epithelium is a type of tissue found covering and lining parts of the body. Stratified squamous epithelium may be keratinized or nonkeratinized. Non-keratinized surfaces must be kept moist by bodily secretions to prevent them from drying out.

-The cells on the surface of stratified squamous keratinized epithelium are very flat. Not only are they flat, but they are no longer alive. They have no nucleus or organelles. They are filled with a protein called keratin, which is what makes our skin waterproof.

4 0
2 years ago
In a bacterium that possesses antibiotic resistance and the potential to persist through very adverse conditions, such as freezi
BlackZzzverrR [31]

Answer: 2. endospores

An endospore is a structure that remains in the dormant state in some bacteria. The term endospore refers to the seed like form, but actually it is not a true spore. Endospore allows bacteria to restrain it's biological activities like obtaining food and reproduction under harsh environmental conditions like freezing and drying. Under favorable conditions these endospores reactivates. The endospore consist of bacterial DNA and ribosome.

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2 years ago
A cyclin called cyclin E forms a complex with a cyclin-dependent kinase called Cdk 2. This complex is important for the progress
Thepotemich [5.8K]

Answer:

B. The amount of unbound cyclin E is lowest as the cell enters S.

Explanation:

The reproduction of the cell is a cycle that it regulates by itself, depending the  demand of a certain cell.

In the case of the mitosis, in Each change from G1 to S to G2 to M is regulated by some proteins like the cyclin.

In the case of the cdK2 is ncessary to pass the control point to pass from the stage G1 to the stage S.

Another characteristic of the cyclins, is that these proteins are synthetized and degraded constantly during the hole process.

Hope this is a useful info

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2 years ago
Drowsiness, paralysis, numbness, poor coordination, and reduced heart rate are common side effects of __________.
Elina [12.6K]
The conditions listed above are common side effects of DEPRESSANTS. Depressants are drugs which slowed down the central nervous system an the brain. They are usually used to treat anxiety and sleep disorders. Other side effects of depressants include: slurred speech, impaired memory and judgement, lowered inhibition, etc.
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