Answer: A
Explanation: Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor.
Ingestion of foreign substances by macrophages and yeast cells by an amoeba is known as <u>Phagocytosis</u>
<u>Explanation:</u>
Phagocytosis that is the name given to the process of ingestion of foreign particles by macrophages. In human body the white blood cells does this function. Macrophages is found in all the tissues. Any foreign particle entering the body is engulfed by this process hence protecting the organisms.
Once a bacteria enters the body it is at once detected and recognised as the foreign particle. Then it is attached to the phagocyte. Then it is engulfed into a vesicle called phagosome. Then this is killed by the process of phagocytosis.
Answer:
This question is asking to formulate a hypothesis for the experiment in the question. A hypothesis is:
IF natural compost is used instead of artificial fertilizer, THEN the tomato plants will grow faster and taller than when artificial fertilizer was used.
Explanation:
In an experiment, a hypothesis is formulated to provide a possible explanation or solution to an observed problem or question. The hypothesis must be testable or falsifiable via an experimentation.
In this experiment involving a biology student who is trying to find out if using natural compost will cause his tomato plants to grow faster and taller than his previously used artificial fertilizer. A possible hypothesis for this experiment goes thus:
IF natural compost is used instead of artificial fertilizer, THEN the tomato plants will grow faster and taller than when artificial fertilizer was used.
Answer:
. Experimentation is the heart of science. Scientists ask questions, gather evidence, share ideas, and analyze data. In designing an experiment, the specific question (or questions) that the experiment is meant to answer must first be clearly identified.
Explanation: