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kicyunya [14]
3 years ago
14

A geneticist has devised a strategy to study protein translocation into the endoplasmic reticulum (ER) in yeast cells. She is in

terested in two different signal sequences that are thought to operate via slightly different translocation mechanisms. Using genetic engineering, she has fused the first signal sequence to a protein whose cytosolic expression is absolutely necessary for cell survival in the selective medium, but is inactive when in the ER. In the same cell, she has also fused the second signal sequence to a toxic protein whose cytosolic expression leads to cell lysis but is harmless when in the ER. Whereas wild-type cells undergo lysis upon the expression of these fusion proteins, she has been able to identify viable mutants, each of which has a loss-of-function mutation in a gene encoding a protein involved in membrane translocation. The products of these genes are probably ...
Biology
1 answer:
Brrunno [24]3 years ago
4 0

Answer:

A geneticist has devised a strategy to study protein translocation into the endoplasmic reticulum (ER) in yeast cells. She is interested in two different signal sequences that are thought to operate via slightly different translocation mechanisms. Using genetic engineering, she has fused the first signal sequence to a protein whose cytosolic expression is absolutely necessary for cell survival in the selective medium, but is inactive when in the ER. In the same cell, she has also fused the second signal sequence to a toxic protein whose cytosolic expression leads to cell lysis but is harmless when in the ER. Whereas wild-type cells undergo lysis upon the expression of these fusion proteins, she has been able to identify viable mutants, each of which has a loss-of-function mutation in a gene encoding a protein involved in membrane translocation. The products of these genes are probably ...

Explanation:

Involved in the transport of proteins with the first signal sequence but not the second one.

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Cell division can occur by either of two distinct processes, mitosis or meiosis.
Slav-nsk [51]
Cell divison occurs through the process of mitosis
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If a cell divides by mitosis so that one cell eventually becomes part of the brain and the other cell becomes part of a salivary
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Answer:  The cells  have  differentiated.

Explanation:

The process by which a cell changes from one type to another is called cellular differentiation. When this happens, the cell changes to a more specialized type. So this creates differentiated daughter cells which are important in a multicellular organism because <u>they are able to perform different and specialised functions</u> in an organism.

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4 years ago
An ecologist hypothesizes that predation by a particular owl species is the major factor controlling the population of a particu
pshichka [43]

Answer:

The correct answer is - whether owl eats the rabbits.

Explanation:

A hypothesis is a proposed answer for an unexplained event that doesn't fit into the current acknowledged logical hypothesis. The essential thought of a hypothesis is that there is no pre-decided result.

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-Making a decision and interpreting the results.

Thus, the first step after forming a hypothesis is to check or test the hypothesis which is null hypothesis -whether owl eats the rabbits.

5 0
3 years ago
What is movement of a part superiorly
MrMuchimi

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8 0
3 years ago
Decide whether each statement describes saturated fat, unsaturated fat, or both saturated and unsaturated fats.
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Answer:

Statement 1.) Both saturated and unsaturated fats.

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Statement 3.) Unsaturated fat

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Fatty acids are straight chain carbon compounds of varying lengths. It is an important component of lipid in plant and animals. All fats are known to contain nine calories per gram, therefore can add to the weight of an individual. There are two type of fatty acids which includes:

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--> Unsaturated fatty acids: These are fatty acids which may contain one or more double bonds making it liquid at room temperature. They are found in plant oil (omega 6) and fish oil (omega 3). When consumed, they are absorbed in the villi of small intestine and helps maintain a good balance of cholesterol in blood.

7 0
3 years ago
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