1. The endoplasmic reticulum and Golgi apparatus are both membrane-bound organelles found in eukaryotic cells. Which statement describes one way in which the endoplasmic reticulum and Golgi apparatus work together?a) The Golgi apparatus assembles proteins, and the endoplasmic reticulum modifies and packages them.
b) The endoplasmic reticulum assembles mRNA molecules, and the Golgi apparatus translates them into proteins.
c) The Golgi apparatus assembles mRNA molecules, and the endoplasmic reticulum translates them into proteins.
d) The endoplasmic reticulum assembles


2. The mitochondria in eukaryotic cells is most similar in function to which of the following?
a) military base
b) power plant
c) factory
d) drawbridge

3. A group of students was asked to list some of the similarities and differences between prokaryotic cells and eukaryotic cells. They created the table shown above. The students made a mistake in creating their table. Which statement best describes their mistake? (Points : 2)
a) Prokaryotic cells possess cytoplasm, while eukaryotic cells do not.
b) Both prokaryotic cells and eukaryotic cells possess a nucleus.
c) Both prokaryotic cells and eukaryotic cells are enclosed by a plasma membrane.
d) Eukaryotic cells possess ribosomes, while prokaryotic cells do not.

Answer;

A. can live for many years.

Unlike red blood cells, white blood cells can live for many years.

Explanation;

-Blood has four main components: plasma, red blood cells, white blood cells, and platelets.

-Red blood cells live for only about 120 days. As they wear out and age, they are captured and disposed of by cells in the spleen and other organs.

-White blood cells are different from red blood cells in several important ways. Unlike red cells, white cells are complete cells. They are larger than red cells and have a nucleus. White blood cells are not just carried by the blood stream, they can also move about independently. Additionally, Unlike red blood cells, white blood cells can live for many years.

Answer:

In the mentioned case, the intrinsic and environmental factors influencing the size of the population should also be included in the computer model. The population size is primarily predicted by environmental and intrinsic factors.  

The size of the population of any species is monitored by the factors like birth rate, death rate, limiting factors, and their accessibility, carrying capacity of the system, rate of migration, and others. All these elements should be taken into consideration in order to determine the changes observed in the population of rabbits in a meadow.  

The treatment for this patient will be with antibiotics, the most common being penicillin. This drug pioneered the treatment of bacterial infections by successfully destroying the bacterial cell wall of microorganisms. Discovered by Alexander Fleming in 1928, penicillin revolutionized the history of medicine, encouraging new scientific studies and saving the lives of many patients.

Answer:

In the modern classification system birds are in a separate class from reptiles, but fossil evidence shows they have common ancestors.

Birds refer to the group of organisms which are endothermic in nature, have feathers, beaks, four-chambered heart, high metabolic rate, lay hard-shelled eggs and lightweight skeletons.  

In biological classification, they are classified under the class Aves.

Reptiles are four-limbed organisms which come under the class Reptilia.

However, biological and fossil evidence show that birds and reptiles shared common ancestors. It is believed that birds have evolved from the reptiles. Most of the scientists believe that birds are the specialized subgroup of theropod dinosaurs.

Final answer:

The structure of a biological membrane consists of a bilayer of phospholipids, housing proteins and cholesterol, with an outward-facing surface adorned with carbohydrate-protein and lipid complexes. The composition allows a fluid movement of proteins within the plane of the membrane, and a selective permeability due to its hydrophobic interior.

Explanation:

The structure of a biological membrane, often referred to as the fluid mosaic model, consists of two layers of phospholipids forming a bilayer. These phospholipids have hydrophilic heads that face outward, one layer exposed to the inside of the cell and the other exposed to the outside. Between these layers, the hydrophobic tails meet, creating a hydrophobic interior.

The proteins are embedded within this phospholipid bilayer and can move freely within the plane of the membrane. Cholesterol is also present in the biological membrane contributing to its fluidity. Some of these proteins also serve to transport materials into or out of the cell.

Also associated with the phospholipid bilayer are carbohydrates attached to some of the proteins and lipids on the membrane's outward-facing surface. These form complexes that function to identify the cell to other cells.

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Answer:

The correct answer would be B. Ingestion, digestion, absorption, elimination.

Digestion refers to the breakdown of complex compounds into simpler elements.

The process of the digestive system can be sequenced as:

1. Ingestion: Intake of food from outside the body. For example, in humans, food is taken in from a mouth.
2. Digestion: The breakdown of complex compounds into simpler elements. For example, polysaccharides, polypeptides, and fats are converted into monosaccharides, amino acids, and fatty acid chains and glycerol respectively.
3. Absorption: The digested food is absorbed and transported to all parts of the body. In humans, the small intestine is the major site of food absorption.
4. Assimilation: The nutrients are transported or distributed to all cells of the body where they are utilized for power generation.
5. Excretion: The undigested food is then excreted out of the body. In humans, the solid waste is excreted through the anus.