The correct answer is A
The scientist can determine that this nucleic acid is a DNA molecule, because it contains Thymine, which does not occure in the RNA molecule. The RNA molecule contains Adenine, Guanine and Cytosine just like the DNA, but unlike the DNA it contains Uracil, not Thymine.
Secondly, the scientist can say with certainty that this DNA molecule is surrounded by a nucleus based on the structure of the nucleic acid described. Only eukaryotic cells have ladder structure. The prokaryotic cells have circular DNA and do not have any organelles, like the nucleus. Therefore, from the ladder structure of the DNA the scientist can see that the cell has a nucleus.
Foods that contain substantial amounts of vitamin A include beef liver, spinach, broccoli and liver oil.
<h3>What is vitamin A?</h3>
Vitamin A is a fundamental micronutrient that must be ingested in the diet in suitable amounts.
Leafy green vegetables (such as spinach) or orange vegetables (such as carrots) contain many vitamin A.
Vitamin A benefits include:
- supports the immunity
- reduces ac_ne
- supports bones
Learn more about vitamin A here:
brainly.com/question/9179407
Answer:
Okay so start with diagramming the phases of Mitosis (interphase, prophase, metaphase, anaphase, telophase, cytokinesis) then draw what all the phases would look like for a plant cell. You can search what a plant cell looks like in mitosis and use it as a reference.
Explanation:
the color coding is for drawing each thing in the phases of mitosis
Answer:
Adrenocorticotropic hormone is a polypeptide tropic hormone produced by and secreted by the anterior pituitary gland. It is also used as a medication and diagnostic agent. ACTH is an important component of the hypothalamic-pituitary-adrenal axis and is often produced in response to biological stress.
Trophic cascades are powerful indirect interactions that can control entire ecosystems
