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goldenfox [79]
3 years ago
12

Which of the following is a term for movement across a cell membrane that does not require energy?

Biology
1 answer:
Marrrta [24]3 years ago
7 0
Passive transport is da answer
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14. Pat and Tracy each have a sibling who has the recessive trait of sickle cell disorder. Neither Pat. Tracy or
Nady [450]

Answer:

Since sickle cell disease is a disorder with an autosomal dominant inheritance pattern, and in light of the lack of data, it could be said that the only way for Pat and Tracy to have a child with sickle cell disease is for both of them to be healthy carriers of the gene, with a 25% probability.

Explanation:

Considering that both Pat and Tracy each have a sibling with a sickle cell trait and that both they and their parents are healthy, it must be assumed that some of their parents are healthy carriers:

  1. Pat and Tracy do not have sickle cell trait. In this case, there is no chance that they will have a child with sickle cell disease.
  2. Either Pat or Tracy has the trait, but the other does not. It is possible that at least one of their children is a healthy carrier.
  3. If both Tracy and Pat have sickle cell trait, the chances of having a child with sickle cell disease are:

Alelles       R         r

R              RR       Rr

r               Rr        rr

RR: healthy (25%).

Rr:  healthy carrier (50%).

rr: sickle cell disease (25%).

<em>If Pat and Tracy are healthy carriers of the gene that determines sickle cell disease, the chance of having a child with the disease is 25%</em>.

Learn more:

Autosomal recesive inheritance brainly.com/question/10605612

8 0
3 years ago
Would you cut the number of baths or showers you take in half if you knew it could improve the quality of water in your area? Wh
sweet [91]

Answer:

I would cut the number of baths and showers to half if there is a water scarcity issue in near future. Plus, I would encourage my friends and family members to do that too, unless an alternative water recylcing is not developed.

Explanation:

There are several benefits associated with my choice. These are

  1. It would reduce the burden of extensive water use in the society.
  2. I can use the saved amount of water for other important tasks such as drinking purposes so I will not run out of water in case of severe scarcity.
  3. It will reduce the energy usage and I would have to pay less.
  4. It is a sustainabe practice and would reduce the water issue for future including next generations.

6 0
3 years ago
The scales of female pine cones produce a sticky substance. what function might this serve?
NikAS [45]
To protect the tree from harmful bugs, animals, or other predators.
4 0
3 years ago
❗❗❗❗❗❗❗❗❗❗ help pls ASAP
avanturin [10]

Answer:

A and C

Explanation:

they provide food and have helped with medicinal discoveries

7 0
3 years ago
What are the impacts to the<br> iguanas in the Galapagos<br> during an el Niño event?
Elden [556K]

Answer:

They can get over heated and there blood can boil and being cold blooded this would be bad!

Explanation:

5 0
3 years ago
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