Answer:
A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses.
Explanation:
Answer:
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Explanation:
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Answer
Reflex response helps to keep organisms alive by quickening their reaction times when in danger instead of having to think about what they need to do
Explanation:
Think about your friend throwing something at your face. What do you do- you probably cover up your face, or try to move out of the way. This is a reflex, and it saves your face from pain. While this is a silly example, these type of automatic "reflex" reactions are absolutely vital in the wild. Mice have the reflex to run when a they see or hear what they think is a predator. This give them the precious seconds they need to escape certain death. Say they didn't move on reflex. If they instead sat and thought about what they needed to do, the predator would catch them and they would die.
Answer:1. White blood cells are part of the body's immune system. They help the body fight infection and other diseases.
2. Red blood cells have adaptations that make them suitable for this.
3. The blood would not clot in case of an injury.
4. Blood supplies essential substances and nutrients.
Explanation: 1. White blood cells are able to recognize viruses and/or infectious germs, which is how they fight off disease/sickness. It is also why we have vaccines. Vaccines put either dead or weakened parts of a germ into your body. Then, the white blood cells recognize it and fight it off the next time it enters your body.
2. They contain hemoglobin, a red protein that combines with oxygen. They have no nucleus so they can contain more of the hemoglobin. they are small and flexible so that they can fit through narrow blood vessels.
3. This will lead to excess blood loss and can even lead to the death.
4. Such as as sugar, oxygen, and hormones to our cells. It also carries waste away from the cells, this waste is eventually flushed out of the body in urine, feces, sweat, and lungs.
