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Biology
IB

Explain the process of prokaryotic DNA replication

DNA replication is semi-conservative and occurs in the 5' to 3' direction. In the lagging strand it is discontinuous (forming Okazaki fragments) and in the leading strand it is continuous.
1) First,...

Answered by Pragna K. Biology tutor
1581 Views

Where does digestion of protein occur?

Digestion of protein starts in the stomach and does not occur in the buccal cavity (mouth). Acidic environment (low pH) due to HCL (hydrochloric acid) in the stomach allow for pepsinogen to be converted i...

Answered by Michal K. Biology tutor
1393 Views

Explain the process of muscle contraction

Nerve impulses travel along the muscle fibre membrane (sarcolemma). The impulse is carried down into the fibre through T-tubules. Impulses are spread along the sa...

Answered by Akash K. Biology tutor
2937 Views

State one similarity and one difference between homologous chromosomes.

Homologous chromosomes pair up during meiosis and contain one paternal and one maternal chromosome. So, these chromosomes are the same length, have the same centromere loci and contain the same sequence o...

Answered by Phoebe L. Biology tutor
14261 Views

Explain the process of human digestion from the mouth to the stomach.

Food enters the mouth and is digested mechanically and chemically. Mechanical digestion is chewing (mastication) by the teeth and breaks the food into smaller pieces. Chemical digestion is by salivary amy...

Answered by Akash K. Biology tutor
1520 Views

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