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ivann1987 [24]
2 years ago
5

The plasma membrane consists primarily of

Biology
1 answer:
prisoha [69]2 years ago
6 0
The plasma membrane primarily consists of: lipids, proteins and carbohydrates.
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After graduation, you and 19 friends build a raft, sail to a deserted island, and start a new population, totally isolated from
Softa [21]

Answer:

Incidence of cystic fibrosis on the island= 0.0025

Explanation:

According to the given information, the population is in Hardy Weinberg equilibrium which means that the allele frequencies would be maintained over generations.  

Given that total population size is = 20

Total number of alleles = 20 x 2 = 40 (since human are diploid, each individual has two alleles for one gene).  

Out of total 19 people, only two are heterozygous for cystic fibrosis which means that out of total 40 alleles, the number of recessive allele for cystic fibrosis is = 2

Frequency of recessive allele (q)= 2/ 40 = 0.05

Frequency of cystic fibrosis genotype (q^2) = 0.05 x 0.05 = 0.0025

Therefore, incidence of cystic fibrosis on the island would be = 0.0025

6 0
3 years ago
Photosynthesis vs cellular respiration
Lostsunrise [7]

Answer:

I don't really know

Explanation:

sorry bud can't figure it out

5 0
3 years ago
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which one of these is not an example of intracellular communication A. control of cell division B. Molecule in a cell changes fu
Firlakuza [10]
I think its D. but I'm not sure
The reason being is it's a prosses that doesn't require the "help" or "cooperation" of other cells and it only effects the one cell.
6 0
3 years ago
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1. List and describe three factors that could possibly affect enzyme activity. 2. Why is it important that cells contain catalas
marta [7]

Answer:

1. Several factors affect the rate at which enzymatic reactions proceed - temperature, pH, enzyme concentration, substrate concentration, and the presence of any inhibitors or activators.

2. It is a very important enzyme in protecting the cell from oxidative damage by reactive oxygen species (ROS). It catalyzes the decomposition of hydrogen peroxide to water and oxygen.

3. Enzyme activity can be affected by a variety of factors, such as temperature, pH, and concentration. Enzymes work best within specific temperature and pH ranges, and sub-optimal conditions can cause an enzyme to lose its ability to bind to a substrate. ... Extreme pH values can cause enzymes to denature.

4. Enzymes are biocatalysts and because of their remarkable properties, they are extensively used in medical diagnosis. ... They provide insight into the disease process by diagnosis, prognosis and assessment of response therapy.

5. The small intestine is a major site for chemical digestion and absorption of key food components, such as amino acids, peptides, and glucose for energy. There are lots of enzymes released in the small intestine and from the nearby pancreas for digestion.

6. Purified human pancreatic alpha-amylase (alpha-1,4-glucan 4-glucano-hydrolase, EC 3.2. 1.1) was found to be stable over a wide range of pH values (5.0 to 10.5) with an optimal pH for the enzymatic activity of 7.0.

Explanation:

1. Factors Affecting Enzyme Activity

Knowledge of basic enzyme kinetic theory is important in enzyme analysis in order both to understand the basic enzymatic mechanism and to select a method for enzyme analysis. The conditions selected to measure the activity of an enzyme would not be the same as those selected to measure the concentration of its substrate. Several factors affect the rate at which enzymatic reactions proceed - temperature, pH, enzyme concentration, substrate concentration, and the presence of any inhibitors or activators.

2. Catalase is a common enzyme found in nearly all living organisms exposed to oxygen (such as bacteria, plants, and animals). It catalyzes the decomposition of hydrogen peroxide to water and oxygen. It is a very important enzyme in protecting the cell from oxidative damage by reactive oxygen species (ROS).

4. for clinical applications. Enzymes are the preferred markers in various disease states such as myocardial infarction, jaundice, pancreatitis, cancer, neurodegenerative disorders, etc. They provide insight into the disease process by diagnosis, prognosis and assessment of response therapy.

5. Amylase. Amylase is a digestive enzyme that acts on starch in food, breaking it down into smaller carbohydrate molecules. ... First, salivary glands in your mouth make salivary amylase, which begins the digestive process by breaking down starch when you chew your food, converting it into maltose, a smaller carbohydrate.

6. Purified human pancreatic alpha-amylase (alpha-1,4-glucan 4-glucano-hydrolase, EC 3.2. 1.1) was found to be stable over a wide range of pH values (5.0 to 10.5) with an optimal pH for the enzymatic activity of 7.0.

5 0
3 years ago
Your normal heartbeat before exercise is called your ____________________.
defon

Answer:

Heart rate i think

Explanation:

6 0
2 years ago
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