The closest algal relatives of land plants are Charophytes, as both share many distinctive features including similar metabolic pathways and the presence of cellulosic cell walls.
The closest algal relatives of land plants are the Charophytes. This group of green algae shares many distinctive features with land plants such as similar metabolic pathways, sequence of DNA, RNA and proteins, and the presence of cellulosic cell walls. Additionally, in both Charophytes and land plants, the sperm structure is the same which further supports their close relationship. However, it is important to remember that Charophytes remain aquatic, and although they are close relatives, they do not represent a transitional stage to terrestrial plants.
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Answer:
The immune system mainly defends the body from any organisms that threaten the destruction of cells...
Explanation:
data because facts and statistics collected together for reference or analysis.
Anton van Leeuwenhoek
Louis Pasteur
Alexander Fleming
Answer;
Louis Pasteur
Explanation;
He was French chemist, this man discovered that heat could kill bacteria that otherwise spoiled liquids including milk, wine, and bee.
He developed germ theory and pasteurization and also demonstrated the Germ Theory of Disease.
The germ theory was his idea that microorganisms might cause disease.
It met great resistance at first because for centuries disease was believed to be punishment for an individual's crimes or misdeeds.
Answer:
C.
Explanation:
Answer:
the tone is the neutral stimulus
Explanation:
In classical conditioning, as first experimented by Pavlov in his experiment with dogs, the bell that was presented initially was the neutral stimulus which was not capable of eliciting salivation alone. He later paired the neutral stimulus (the bell), with the unconditioned stimulus (meat powder) which naturally elicited salivation. The neutral stimulus then became associated with the unconditioned stimulus to eventually trigger salivation when presented alone.
In the situation of the rat of which Mark wants to train it by applying classical conditioning technique, the tone is the neutral stimulus. Except it is paired with the unconditional stimulus which naturally would make the rat blink, it would only attract the attention of the rat without making it to blink.
B. Thymine
C. Cytosine
D. Guanine