1.
According to cell theory, all cells
Correct Answer
D. Come from other cells
Explanation
There are prokaryotic (means does not have a true nucleus) and eukaryotic (means does have a true nucleus) cells. There are some cells do not have a true nucleus. But all cells can only come from other cells.
2.
The mitochondrion of a cell
Correct Answer
D. Is where cellular respiration occurs
Explanation
The mitochondrion has two membranes and is kidney-bean shaped. It is the site of cellular respiration because it is where sugars are broken down into energy. Cellular respiration is the process where the cell is provided energy.
3.
Structures that support and give shape to plant cells are
Correct Answer
D. Cell walls
Explanation
There are no microbodies, Golgi bodies modify and transport proteins, and the nucleus directs the cell by telling it what to do. Cell walls support the plant cell by giving a rigid shape of a rectangle. The cell wall also helps the plant hold on to the water that it has stored.
4.
The storage of hereditary information in a eukaryotic cell is in the
Correct Answer
B. Nucleus
Explanation
The nucleus has the DNA (hereditary info), the cytoplasm is the fluid that the organelles of the cell float in, the centrioles aide in mitosis, and the lysosomes break down materials in the cell.
5.
In what way are all cells similiar?
Correct Answer
A. The function in a similiar way
Explanation
Plant cells have structures that the animal cell does not, cells don't really create a product, and all living organims have cells. But all cells function in the same way in that they respire, take in nutrients, respond to stimuli, reproduce and so on.
6.
A(n) _____________ is a group of different tissues that work together to perform a certain function.
Correct Answer
B. Organ
Explanation
Cells make up tissues. Tissues make up organs. Organs make up organ systems. Organ systems make up organisms.
7.
Your heart functions because of tissues like cardiac muscle, blood and connective tissues. At which level of organization is your heart?
Correct Answer
B. An organ
Explanation
The different tissues are working together to perfom one job.
8.
The central nervous system (CNS) consists of the brain and spinal cord. What is the CNS an example of?
Correct Answer
A. Organ system
Explanation
The brain and spinal cord are seperate organs but they are working together to perform this job.
9.
Which of the following is listed from least to most complex?
Correct Answer
C. Cells, organ, organism
Explanation
Order is : cells, tissues, organs, organ systems, organism
10.
Which of the following is an example of a tissue?
Correct Answer
D. Bicep
Explanation
Chloroplast is part of the plant cell, stomach is an organ, human is an organism but bicep is tissue because it is made up of the same type of cells doing the same job.
11.
What is the movement of substances into and out of a cell without the use of energy called?
Correct Answer
B. Passive transport
Explanation
Active and passive transport involves materials entering and leaving the cell. But, active requires energy and passive does not. Exocytosis means things leave the cell only. Endocyotosis means things enter the cell only.
12.
What happens during active transport?
Correct Answer
C. Cells must use stored energy to move substances across a membrane
Explanation
Since the question asked about active you are looking for an answer the describes using energy. Answers a, b, d all refer to passive transport which does not require energy
13.
The process of releasing energy from the chemical breakdown of compounds in a cell is
Correct Answer
D. Respiration
Explanation
The definition of respiration is breaking down chemcials to provide energy for the cell
14.
What is the result of mitosis?
Correct Answer
A. 2 identical cells with identical amounts of genetic material
Explanation
In mitosis you end up with 2 daughter cells that are exact copies of the parent cell. In mitosis, you end up with 4 daughter cells that have half of the genetic material and this is where you see genetic variation. There is not way to end up with 2 cells with half of the material.
15.
In photosynthesis, plants use carbon dioxide, water and light to produce
Correct Answer
C. Glucose and oxygen
Explanation
Carbon monoxide is harmful gas that comes out of our car's tail pipe, and chlorophyll is the green pigment that makes plants be green. Glucose and oxygen are produced in photosynthesis so that the glucose can be converted to energy for the cell.
16.
How do Paramecium take in energy?
Correct Answer
B. They eat it
Explanation
Paramecium have an oral groove to use to eat.
17.
Which word below best describes amoeboid movement?
Correct Answer
D. Oozing
Explanation
Amoebas move slowly using their pseudopods to anchor them and then the ooze their cytoplasm in the direction of the pseudopod to pull them in that direction.
18.
Which structure below helps many protists rid themselves of wastes?
Correct Answer
D. Lysosome
Explanation
Oral groove is for eating, eyespot is for sensing light and flagellum is for movement. Lysosomes break down wastes and other materials in a cell that are unwanted.
19.
Which structure listed below helps the Euglena sense and respond to their environment?
Correct Answer
C. Eyespot
Explanation
contractile vacuole gets rid of excess water, flagellum is for movements and chloroplasts are site of photosynthesis in plant cells. The eyespot detects light and helps the Euglena to know where to find light so that it can photosynthesize.
20.
Which 2 protists can reproduce sexually?
Correct Answer
A. Volvox and paramecium
Explanation
Euglena reproduce asexually (mitosis), Paramecium can reproduce sexually and asexually. amoebas reproduce asexually