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Doss [256]
3 years ago
7

The observations of Hooke and van Leeuwenhoek documenting the existence of microscopic cells formed the basis of what important

theory?A. the cell theory stating that all living things are composed of cellsB. the theory of spontaneous generation, which held that life forms could arise spontaneouslyC. the theory of chemotherapy, or use of antimicrobials to destroy pathogenic organismsD. the germ theory of disease and causative agents
Biology
1 answer:
PIT_PIT [208]3 years ago
4 0

A. the cell theory stating that all living things are composed of cells.

Hope this helps!

-Payshence

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Which of the following best describes homeostasis?
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Explanation:

A more formal definition of homeostasis is a characteristic of a system that regulates its internal environment and tends to maintain a stable, relatively constant condition of properties. The normal value of a physiological variable is called its set point.

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3 years ago
If a cancerous mutation occurs in a stem cell in the bone marrow, what process does the stem cell go through that would cause th
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The stem cell will go through mitosis to cause the differentiated cells it produces to also be cancerous; option A

<h3>What is mitosis?</h3>

Mitosis is a process in cells which accounts for the production of new cells by the division of cells.

Cancer results when there is abnormal growth and division of cells.

Therefore, mitosis occurs or stem cells to become cancerous.

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8 0
2 years ago
Penicillin-binding protein 2a, encoded by the medA gene, isn’t affected by beta-lactam antibiotics.
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Answer:

The correct answer is - false.

Explanation:

Penicillin-binding protein 2a or PBPs are protein produced by bacteria that binds with the β-lactam antibiotics such as penicillin. They play role in the cell wall synthesis of bacteria by producing peptidoglycan by catalyzing the reaction.

β-Lactam antibiotics bind with the PBPs and cause the disruption to peptidoglycan cross-linking in the biosynthesis of the cell wall and ultimately lysis of bacteria takes place and cell death.

7 0
2 years ago
Knowing that the area where fire is red is usually cooler, a scientist speculated that the color of a star is determined by its
dlinn [17]
Experimentation to determine the temperature of stars
6 0
3 years ago
I NEED HELP ASAP!!!!!!
Salsk061 [2.6K]

Answer:

42 kg.m/s if the two are moving in the same direction

Explanation:

momentum formula: p=mv

22kg.m/s+20kg.m/s= p

42kg.m/s=p

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3 0
3 years ago
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