Francium has 36 isotopes, but only francium-223 occurs in nature. Francium-223 spontaneously emits particles and energy, so francium-223 is a (an) of francium.

Which is a mechanical vector that injects recombinant DNA directly into the nucleus of a host cell? btw ik its not gene gun

6. A dogfish shark contains 24 chromosomes in each of its muscle cells. How many chromosomes are normally found in each of its gametes? (1) 6 (2) 12 (3) 24 (4) 48

Which of the following best defines the water cycle, also known as the hydrological cycle? Cycling of hydrogen and oxygen that contributes 78% of atmospheric gases and drives food webs Cycling of hydrogen and oxygen that involves changes between the

Jane supplied plenty of water, minerals, sunlight, and carbon dioxide for her plant. But the plant still didn't do well. What might be the reason?

What are three fossil fuels and how are they different from each other

Why are phospholipids ideal for making up the selectively permeable membrane?

5. What type of bond can be found between complementary nitrogenous bases?

Which field of biology focuses on heredity and dna?

What property of water was demonstrated by fold and float

How does a mutation in a sex cell differ from a mutation in a non-sex cell?