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mestny [16]
3 years ago
14

What is the movement of molecules across a barrier such as the semi-permeable cell membrane called

Biology
1 answer:
PolarNik [594]3 years ago
3 0

Answer:

DIFFUSION

Explanation:

Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.

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Is it easy for breeders to produce mutants?
Eva8 [605]
It depends! If we're talking about something like a cute little Matlipoo, your answer is yes. These are technically considered mutants as they posses characteristics that are not found in either of the original populations (Maltese + Poodles). Not all mutations are bad. Those who survived the bubonic plague are said to have a mutated gene that enabled them to be more resilient against the illness. 

In the case of inbreeding the mutation can prevent offspring from being born by either causing sterility in the parents, or it will cause a miscarriage so the fetus is terminated naturally in the beginning. Sometimes the offspring is still born (deceased at birth), or has debilitating symptoms like in cerebral palsy. So there is a chance that the offspring may never be born, making it impossible for a breeder.

Mutations can also be spontaneous, so a breeder might mean well by selecting two animals from different family trees, but both of the parents could produce mutant offspring together.

This question is pretty vague, you should ask your teacher for clarification.
6 0
3 years ago
Chromosomes consist of ________ and ________.​
Contact [7]
Chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique. ... Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA)
5 0
3 years ago
Read 2 more answers
Innovative ideas may someday lead to a new way of addressing significant marine issues. Which of the following should be conside
maw [93]

Answer: See explanation

Explanation:

1. The factors that should be considered when evaluating the costs and benefits of a new innovative process include the cost to build, the effort and time to implement and the maintenance and recurring costs. Therefore, the correct options is D. I, II and III.

2. The factors that will contribute to a measurement of environmental quality is the Salinity levels. Therefore, the correct option is C.

3. If all the other costs and benefits are equal, then the product that will be recommended will be option A "Product 1 because it requires less monitoring, reducing the overall cost"

Since Product 1 requires monitoring once in three months while Product 2 requires monitoring once every week, then we can deduce that product 2 will increase the overall cost.

4. The option that describes the relationship between human population size and resource use is option A "Countries with high populations are likely to use more resources".

When there's an increase in population, the people will make use of more resources when compared to an area with lesser population. Therefore, the correct option is A

8 0
3 years ago
How does the haploid form of ulva switch to its diploid form?.
Nikolay [14]
Gametophytes produce cells that undergo mitosis to produce gametes that fuse to form a zygote.
6 0
2 years ago
​What is the minimum daily amount of dietary carbohydrate necessary to spare body protein from excessive breakdown?
rosijanka [135]

Answer:

50-100g is the minimum daily amount of dietary carbohydrate necessary to spare body protein from excessive breakdown.

Explanation:

Carbohydrates are one of thre e major macronutrient (Proteins, Lipids) required by body. Carbohydrates (glucose) are the primary energy source for body. Brain, neuron and developing red blood cells can use only energy provided by glucose. Carbohydrate and protein provide 4 kcalories energy per gram.

When there is not enough carbohydrates in diet, the body will start using energy from fats and proteins. The body will break the proteins and convert them to glucose for energy. For a long period of time, the carbohydrate deficient diet can lead to excessive breakdown of proteins. <em>Thatswhy a person must consume 50-100g of carbohydrates daily in order to prevent the excessive breakdown of proteins.</em>

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Hoping this might be helpful!!

7 0
3 years ago
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