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yanalaym [24]
3 years ago
7

What is a layer that surrounds cells, separating their interior from the exterior environment?

Biology
2 answers:
mihalych1998 [28]3 years ago
8 0
Plasma membrane which is also the cell membrane
Evgen [1.6K]3 years ago
3 0

The Structure That Surrounds the Cytoplasm in a Bacterial Cell. The cytoplasm of bacterial cells is enclosed by the cell, or plasma, membrane that separates and protects the internal environment of the cell from the external environment.

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Explain 3 factors that contribute to the abuse of alcohol, tobacco and other drug abuse.
Softa [21]

Answer: Family, Social and Neglect

Explanation:

Family Risk Factors: Family risk factors include childhood maltreatment in which the parent child relationship, marital status of parents, level of understanding among the family members also influences the abuse of alcohol and drug abuse.

Social Risk Factors: The society in which the person or child is living also influences the drug, tobacco and alcohol abuse. A teenage easily gets influenced by the society and place where they are living.

Neglect: If a person feels neglected emotionally by the partners or parents then there is an increased chance of alcohol or drug abuse. If the important necessities of life such as education, clothes, food is fulfilled by the guardians then also there are  chances that a person might get towards alcohol and drug abuse.

8 0
2 years ago
Round seeds (R) are dominant to wrinkled seeds (r), and yellow seeds (Y) are dominant to green seeds (y). What is the expected p
asambeis [7]

Answer:

The correct answer would be- 1:1:1:1.

Explanation:

According to the question the cross between the two pea plants with the genotype RrYy and rryy where R for round seeds and r for recessive form that expressed wrinkled seed character. The other character of this dihybrid cross is the color of the seds Y for green and y for yellow seeds.

The cross is shown in the image attached that suggests that phenotypic ratio would be 1:1:1:1 as RrYy, Rryy, rrYy, and rryy.

Thus, the correct answer is : 1:1:1:1.

3 0
3 years ago
Which characteristic differentiates amphibians from reptiles?
Stells [14]

Option D – amphibians may use their skin for gas exchange is the characteristic feature of amphibians that differs from reptiles.

Explanation:

The amphibian skin is moist, thin and marbled and supplied by blood vessels running on its surface. The moisture present in the skin dissolves the oxygen present in its surrounding which is absorbed by the blood vessels. Special glands help the amphibians to keep the skin moist.

The very thick and tough scales present on the reptiles prevent them to absorb oxygen through their skin. Hence, they breathe and respire through their lungs.

Amphibians have three-chambered heart. They do not develop amniotic eggs. Adult amphibians although spend much time on land, they breed only in water due to the absence of amniotic sac .

7 0
3 years ago
The best way to maintain balance of pests in an ecosystem is to do what?
Greeley [361]

Answer:

i will say D....

Explanation:

3 0
3 years ago
In a particular population the allele frequency of the ABO blood type alleles are as follows: r is 50%. IB is 49% and i is 1%. I
agasfer [191]

Answer:

26% is the percent of the population will have an A blood type (Option C)

Explanation:

Due to technical problems, you will find the complete explanation in the attached files

Download pdf
7 0
3 years ago
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