What do viruses need to reproduce

1. bacteria

2. genetic material

3. insulin

4. a host cell

In a combustion engine, fuel is burned to produce mechanical energy. Which of the following shows that an energy transformation has taken place?

How can i put punnett square in to a sentence?

How many cotyledons would be found in a flowering plant with 9 petals on each flower and long leaves with parallel leaf veins?

During a pet scan, a london cabby is asked to describe the route she would take a fare from the west end theater district to harrod's department store. her description would be associated with increased activity of the right hippocampal formation.

What is an experiment with a controlled and uncontrolled variable and what are they?

Define and explain the term scientific theory

The table below shows the number of the sub-atomic particles in an atom of nitrogen. Sub-atomic Particles Sub-atomic Particle Number Protons 7 Neutrons 7 Electrons 7 What is the amu of a nitrogen atom?

The ions in a compound form and orderly three-dimensional arrangement called a molecule. true or false

How would a scientist study the relationship between the Tiktaalik roseae and modern fish and tetrapods? create a diagram that hypothesizes ancestry use relative dating use transitional fossils to determine age review its analogous structures

In fruit flies, the gene for red eyes (r is dominant and the gene for sepia eyes (r is recessive. if a red-eyed heterozygous fly (rr mates with a sepia-eyed homozygous fly (rr, what are the possible genotypes of their offspring?