What is the boundary that separates a cell from the inside and outside environment?

Biology

2 answers:

Ratling [72]4 years ago

8 0

Answer:

plasma membrane

The plasma membrane (often called the cell membrane) is a thin flexible barrier that separates the inside of the cell from the environment outside the cell and regulates what can pass in and out of the cell. Internally, the cell is divided into the cytoplasm and the nucleus.

Explanation:

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guapka [62]4 years ago

3 0

Cell membrane, The cell membrane forms a boundary that separates the cellular contents from the outside environment. The cell membrane is capable of receiving and recognizing chemical signals. The cell membrane forms a barrier that keeps all substances that might harm the cell from entering the cell. (Pls mark me as brainliest!)

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How do small particles cross a cell membrane?

lora16 [44]

Active transport requires that the cell move engegy that it has obtained the food to move the molecule threw the cell membrane.The passive transport doesn't required as much energy for the molecule to move....

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4 years ago

In pea plants, smooth (S) peas are dominant over wrinkled (s) peas in the single gene controlling pea texture. A plant with smoo

OlgaM077 [116]

Answer:

Ss and ss

Explanation:

Since the smooth trait (S) is dominant over the wrinkle trait (s), the genotype of the wrinkled pea parent is definitely ss.

Also, some of the progeny had wrinkled pea texture (ss). Each of the 2 wrinkled alleles must have been donated by each of the parent. It thus means that the smooth pea parent is heterozygous for the trait (Ss).

Now, let us look at a cross between the two parents;

Ss x ss

Progeny: Ss, Ss, ss, ss.

Phenotypically, 50% of the progeny are smooth peas while 50% are wrinkled.

Looking at the population of each of the phenotype resulting from the cross. 252:247 is approximately a 50:50 ratio.

Hence, the genotypes of the two parents are Ss and ss.

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3 years ago

Which of the following are associated with a rock's chemical composition? Select all that apply.

harkovskaia [24]

B. Crystalline structure

C. Types of chemical elements

And

D. Amounts of chemical elements

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