1.
If the red dots represent salt, what type of cell movement is shown in the picture?
Correct Answer
B. Difussion
Explanation
The correct answer is Diffusion. Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration. In the given picture, the red dots representing salt are spreading out evenly, indicating the movement of salt particles from an area of higher concentration to an area of lower concentration. This process does not require any energy and occurs naturally.
2.
Which level of organization of life is missing from the picture?
Correct Answer
C. Organism
Explanation
The question is asking about the level of organization of life that is missing from the picture. The picture likely shows some form of organization, such as cells or tissues. However, the level of organization that is not depicted in the picture is the organism level. The organism level refers to a living individual that is made up of multiple systems and organs working together. In the picture, only a lower level of organization is shown, such as cells or tissues.
3.
Each of these pictures represents one ______ in a multicellular organism.
Correct Answer
B. Organ system
Explanation
Each of the pictures represents a collection of organs that work together to perform a specific function in a multicellular organism. This collection of organs is known as an organ system.
4.
Which cell process is responsible for releasing waste?
Correct Answer
A. Excretion
Explanation
Excretion is the correct answer because it is the cell process responsible for releasing waste. Excretion refers to the removal of metabolic waste products from the body, including carbon dioxide, urea, and excess water. This process is vital for maintaining homeostasis and ensuring the proper functioning of cells and organs. Digestion is the process of breaking down food, respiration is the process of exchanging gases, and reproduction is the process of producing offspring, none of which directly involve the release of waste products.
5.
What TWO (2) items are true about sexual reproduction?
Correct Answer(s)
B. Two parents' DNA are used.
D. Offspring are unique and different from parents.
Explanation
In sexual reproduction, two parents' DNA are used to create offspring. This is because sexual reproduction involves the fusion of gametes from two parents, each contributing half of the genetic material. As a result, the offspring produced through sexual reproduction inherit a unique combination of traits from both parents, making them genetically different and distinct from their parents. This genetic diversity is important for the survival and adaptation of species.
6.
Which cell process has to do with keeping homeostasis (stable, normal inside environment)?
Correct Answer
D. Responding
Explanation
The process of responding is closely related to maintaining homeostasis in an organism. When the internal environment of an organism is disturbed, it needs to respond in order to restore balance and stability. This can involve various mechanisms such as adjusting body temperature, regulating blood sugar levels, or responding to external stimuli. By responding to changes in the environment, cells can ensure that the internal conditions remain within a normal range, allowing the organism to function properly.
7.
Diffusion and Osmosis are both ________ transport because they both require no energy.
Correct Answer
A. Passive
Explanation
Diffusion and osmosis are both considered passive transport because they do not require any energy input. In diffusion, molecules move from an area of higher concentration to an area of lower concentration, while in osmosis, water molecules move across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration. Both processes occur spontaneously and do not require any energy expenditure by the cell.
8.
Both unicellular and multicellular organisms must perform the same life activities to stay alive.
Correct Answer
A. True
Explanation
Both unicellular and multicellular organisms share common life activities essential for their survival. These include processes like obtaining and using energy (metabolism), responding to their environment, reproducing to ensure the continuity of their species, and maintaining homeostasis to regulate internal conditions.
9.
Click THREE (3) statements that are true about multicellular organisms.
Correct Answer(s)
B. Multicellular organisms are made of 2 or more cells.
D. Multicellular organisms are more complex (less simple) than unicellular organisms.
E. Multicellular organisms must complete all life functions.
Explanation
Multicellular organisms are made of 2 or more cells, which means they are composed of multiple cells working together. They are more complex than unicellular organisms because they have specialized cells and tissues that perform specific functions. Additionally, multicellular organisms must complete all life functions, such as reproduction, growth, and metabolism, in order to survive and thrive.