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Schach [20]
3 years ago
14

1. The nucleus

Biology
1 answer:
AleksAgata [21]3 years ago
7 0

Answer:

1. E. A, B, and C

2. B. Smooth ER

3. D. Neither

4. B. Maintains turgor pressure in plants

Explanation:

1. Though I've never heard of "nuclear pores" in the nucleus (I've only known of them to be in the nuclear envelope), answer E is the only one that has the most obvious answer--storing genetic material. The nucleus regulates cell activities by using the stored genetic material to produce proteins.

2. There's no explanation for this as it's pretty much just memorizing the function of organelles, just remember that "lipid biosynthesis" is just basically saying "making lipids".

3. Viruses are neither eukaryotic or prokaryotic since they have no defining characteristics that eukaryotic and prokaryotic cells have. They lack a nucleus and can only replicate when inside a host cell.

4. The words "large central vacuole" should give you a big hint to the question talking about a plant cell. Turgor pressure is when the cell walls of plant cells press up against each other due to the size of the large central vacuole. This is why plants wilt when they do not have enough water, their cell walls do not press against each other so the structure is weak.

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That the allele that gives human red blood cells increased resistance to malarial parasites also reduces the amount of oxygen th
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Answer:

A (Genotype)

Explanation:

All organisms possess genetic material which contains information required for certain functions/traits. This genetic material is stored as DNA and contains certain segment that encodes functional products (proteins) called GENE. The make-up of the genes responsible for a particular characteristics in an organism is called the GENOTYPE. Genes occur in variant forms called ALLELES, which are inherited from each parent.

These alleles are responsible for the varying expression of a particular trait e.g. allele T can be responsible for Tallness while the variant form, allele t can be responsible for shortness. In this example, we can see that height is the trait here but the different alleles encode varying expression of it. The combination of the alleles received by both parents, which collectively determines the trait to be expressed is the GENOTYPE.

N.B: The genotype refers to the physically invisible genes not the expressed trait itself, which is the phenotype.

In this case, an allele (gene variant) is responsible for the resistance of Red Blood cells and regulates oxygen carried by them. The phenotype is the resistance that the RBC's possess and its reduced ability to carry oxygen but the combination of alleles responsible for that trait is the GENOTYPE.

4 0
4 years ago
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Answer:

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Enzymes are needed for performing the proper function of the digestive system. Digestive enzymes are primarily produced in the stomach, pancreas, and small intestine. However, even salivary glands generate digestive enzymes in order to dissociate the molecules of food at the time of chewing.  

There are three prime kinds of digestive enzymes, which are classified on the basis of the reactions they catalyze. These are protease, amylase, and lipase.  

3 0
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Explanation: hopefully this helps ( i learned this like two years ago )

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