BIOLOGY HIGH SCHOOL

What stomach secretion is necessary for normal hemoglobin production in RBCs?A. HCl
B. pepsinogen
C. intrinsic factor
D. gastric lipase

Answers

Answer 1
Answer: Instrinsic factor is the stomach secretion necessary for normal hemoglobin production in RBCs.

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The head of a phospholipid can be descibed as

Answers

Phospholipids are a class of lipids and are a major component of all cell membranes as they can form lipid bilayers. Most phospholipids contain a diglyceride, a phosphate group, and a simple organic molecule such as choline. 

Amphipathic character 
The 'head' of a phospholipid is hydrophilic (attracted to water - polar), while the hydrophobic (non-polar) 'tails' repel water. The hydrophillic head contains the negatively charged phosphate group, and may contain other polar groups. The hydrophobic tail usually consists of long fatty acid non-polar hydrocarbon chains.

What are some ways in which the structure of a compound influences its function?

Answers

 structure of a compound influences its function in many ways like we take example of phospholipid bilayer  1. The fact that the tails are hydrophobic means that they do not interact with water. When a bunch of phospholipids are floating around in water, they try to arrange themselves in a bilayer that shields the hydrophobic parts from water-based, or aqueous, surroundings.

2. The heads are hydrophilic and can then interact with water and other polar or charged substances on either side of the bilayer. The bilayer acts as a barrier that allows cells to maintain internal conditions that are different from external conditions, which is monumentally important for cells to operate properly. 

3. Phospholipids demonstrate the intersection of structure and function in another way, too. We already know that fatty acids can be saturated or unsaturated and that unsaturated fatty acids have bends in their chains. Those bends prevent fatty acids from packing close.

Which of these properties changes if the size of an object changes?a. density
b. melting point
c. solubility
d. mass

Answers

im guessing c=solubilty because 

When air at the surface diverges, airflow above must__

Answers

converge, regardless of hemisphere

Answer:

: When the air at the surface diverges, it means that, above, the air sinks and that is called, a subsidence, the opposite of a convection. It happens when the atmospheric pressure is high and it diverges from the ground towards regions of lesser pressure,

Explanation:

Which is a disadvantage of the genetically engineered potatoes

Answers

Answer:

The question lacks options, the options are:

A) They are easier to transport and store than injectable vaccines (shots).

B) They make it easier to administer edible vaccines.

C) They are more expensive than potatoes without the vaccine.

D) They have nutritional value while potatoes without the vaccine do not.

Thw answer is C

Explanation:

Agricultural crops have faced series of problems caused by pest, nutrient composition etc. However, technology has made sure they these problems are reduced in the least possible way via the use of genetic engineering. Genetic engineering, also called genetic modification is the manipulation of an organism's genes using biotechnology procedures.

In this case, the potato crop was genetically modified, meaning that, the crop was improved genetically. Although, this process has many advantages like inserting a vaccine in the edible crop and easy storage, it also has disadvantages. One of these disadvantages as mentioned in the options is that they become more expensive than potatoes without the vaccine. The price increases due to the vaccines they now contain in comparison to the potatoes without vaccine (not genetically modified).

This price can become not affordable for an average person. Hence, it is a disadvantage of the genetically modified potato crop
Disadvantage:
1. Cause health problems for animals eating the product.
2. Some GM foods may contain allergens and toxins.
3. Gene transfer may occur between organisms.

Pollination in plants leads to

Answers

Pollination is the process of transferring pollen from a stamen to a pistil. It leads to creation of new seeds and creation of new plants.
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