Answer the following question given this paragraph: Most plants continue to grow as long as they live. They grow through a combination of cell growth and cell division (mitosis). The key to plant growth is meristem, a type of plant tissue consisting of undifferentiated cells that can continue to divide and differentiate. Meristem allows plant stems and roots to grow longer (primary growth) and wider (secondary growth). Q: What is a type of plant tissue consisting of undifferentiated cells that can continue to divide and differentiate? Choices: - epidermis - cambium - ganglion - meristem A:
meristem
(Question)
Answer the following question given this paragraph: Q: Macrophages and dendritic cells are types of what" Choices: - amoena cells - supercapacitor cells - mast cells - phagocytic cells A:
(Answer)
phagocytic cells
Ques: Answer the following question given this paragraph: The reactants are two electrically neutral elements; they have the same number of electrons as protons. The product, however, is ionic; it is composed of Mg2+ and Clions. Somehow, the individual Mg atoms lose two electrons to make the Mg2+ ion, while the Cl atoms gain an electron to become Cl ions. This reaction involves thetransfer of electrons between atoms. The process of losing and gaining electrons occurs simultaneously. However, mentally we can separate the two processes. Oxidation is defined as the loss of one or more electrons by an atom. Reduction is defined as the gain of one or more electrons by an atom. So oxidation and reduction always occur together; it is only mentally that we can separate them. Chemical reactions that involve the transfer of electrons are called oxidation-reduction (or redox) reactions. Redox reactions require that we keep track of the electrons assigned to each atom in a chemical reaction. How do we do that? We use oxidation numbers to keep track of electrons in atoms. Oxidation numbers are assigned to atoms based on four rules. Oxidation numbers are not necessarily equal to the charge on the atom (although sometimes they can be); we must keep the concepts of charge and oxidation numbers separate. The rules for assigning oxidation numbers to atoms are as follows: 1. Q: What is the term for the loss of one or more electrons by an atom? Choices: - half-life - decomposition - evaporation - oxidation A:
Ans: oxidation
(Q).
Answer the following question given this paragraph: Hydrocarbons are compounds that contain only carbon and hydrogen atoms. The smallest hydrocarbon, methane (CH 4 ), contains just one carbon atom and four hydrogen atoms. Larger hydrocarbons contain many more. Hydrocarbons with four or more carbon atoms can have different shapes. Although they have the same chemical formula, with the same numbers of carbon and hydrogen atoms, they form different compounds, called isomers . Isomers are compounds whose properties are different because their atoms are bonded together in different arrangements. Q: What do you call compounds whose properties are different because their atoms are bonded together in different arrangements? Choices: - isotopes - mixtures - ionic compounds - isomers A:
(A).
isomers
Ques:Answer the following question given this paragraph: Unsafe drinking water causes 88% of diseases worldwide. In many nations, these diseases are the leading cause of death in children under the age of five. More than 14,000 people die every day from such diseases. Cholera is caused by bacteria. A person gets guinea worm from drinking the guinea worm larvae ( Figure below ). The cholera bacteria and guinea worms are pathogens. Q: What is cholera? Choices: - protein - energy - glucose - bacteria A:

Ans:bacteria
Answer the following question given this paragraph: There are two different types of specific immune responses. One type involves B cells. The other type involves T cells. Recall that B cells and T cells are types of white blood cells that are key in the immune response. Whereas the immune system's first and second line of defense are more generalized or non-specific, the immune response is specific. It can be described as a specific response to a specific pathogen, meaning it uses methods to target just one pathogen at a time. These methods involve B and T cells. Q: B cells and t cells are examples of what type of cells? Choices: - heart cells - cancer cells - skin cells - white blood cells A:
white blood cells