Answer:
Mass number can vary due to the fact that the number of neutrons can vary. Isotopes are named for their mass numbers. So, this element has 15 protons (atomic number), 15 electrons, and 16 neutrons (mass number minus atomic number). This isotope is phosphorus-31, which has atomic number 15.
Explanation:
The nucleus stores the DNA; the ER synthesizes proteins (rough), steroids and lipids (smooth); the mitochondria is the powerhouse of the cell; the Golgi aids in transportation; therefore, the lysosomes would be the organelle to ensure that humans did not have webbed feet, as it would "dispose" of that extra tissue.
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Answer:
homeostasis
Explanation:
homeostasis controls body temperature among other things.
Answer:
Which of the following bacteria lack a cell wall and are therefore resistant to penicillin?
B. Mycoplasmas
The protein from which hook and filaments of flagella are composed of, is
B. flagellin
A cluster of polar flagella is called
A. lophotrichous
The cooci which mostly occur in single or pairs are
B. Diplococci
Flagella move the cell by
C. spinning like a propeller
Explanation: