Which of the following enzymes unwind and open the DNA double helix at the start of DNA replication?

Group of answer choices

Helicase

Telomerase

DNA Polymerase

DNA Ligase

Human induced enviremental changes can affect living things at which levels

How are electrons moved from photosystem II to photosystem I in photosynthesis?

What happens when the density of the object is equal to the density of the fluid. HALP

Explain why the temperature fluctuates so much throughout the 4 layers?

How did you obtain genomic dna from your unknown bacteria? b. name the target dna (from genomic dna being used for identification? c. why did we use this region for identification of your unknown organism instead of using the entire genomic dna? d.

Why is the theory of abiogenesis just another example of the idea of spontaneous generation?

What is the role of the plasma cell in the antigen-antibody response? makes an antigen harmless without destroying it produces antibodies against the sensitizing antigen produces antibodies after an exposure to a known antigen clumps

Why do most plants have green leaves?

When a plant produces sugars and transports them during translocation, which main plant tissues are at work? dermal and meristem dermal and vascular ground and dermal vascular and ground

Which of the following is an example of an X-linked recessive disorder? A. Sickle cell disease B. Methemoglobinemia C. Color blindness D. Huntington disease