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Test Prep CLEP Science and Mathematics Exam (page: 5)
Test Prep CLEP Science and Mathematics: Biology, Calculus, Chemistry, College Algebra & Mathematics, Precalculus, Natural Sciences
Updated on: 09-Feb-2026

Viewing Page 5 of 103
CLEP Science and Mathematics PDF 494 Questions

Which of the following hormones is correctly linked to its function in mammals?

  1. Prolactin, regulates calcium in the bloodstream
  2. Follicle simulating hormone, regulates sperm production
  3. Gonadotropin-releasing hormone, causes release of thyroxine
  4. Aldosterone, production of secondary sex characteristics
  5. Insulin, increases blood glucose levels

Answer(s): B

Explanation:

FSH, known well for its role in the female menstrual cycle as the inducer of egg development, also induces spermatogenesis, or sperm production. Prolactin is involved in female milk production; GnRH causes the release of gonadotropins (FSH and LH) from the pituitary gland; aldosterone helps the kidneys in water balance; and, insulin decreases blood glucose concentration.



The process of breaking food particles down into the macromolecules that make them up is called

  1. ingestion
  2. cellular respiration
  3. absorption
  4. dehydration synthesis
  5. digestion

Answer(s): E

Explanation:

Digestion is the process of food breakdown, while ingestion is the act of taking the food into the body via the mouth. Cell respiration refers only to the breakdown of macromolecules such as sugars within a cell's mitochondria in order to produce ATP; and, dehydration synthesis is the process of joining smaller molecules to make larger ones (as in the building of a protein from individual amino acids), and this is the opposite of hydrolysis, which takes place during digestion.



In a plant cell, the reactions of photosynthesis take place within the

  1. mitochondria
  2. chloroplast
  3. cytoplasm
  4. nucleus
  5. plasma membrane

Answer(s): B

Explanation:

The chloroplasts of plant cells are where the reactions of photosynthesis take place. This is where chlorophyll molecules can be found within the chloroplast membranes. The production of glucose and other sugars takes place within the stroma (inner fluid) of the chloroplast.



Mosses cannot grow very tall due to their lack of

  1. specialized vascular tissues
  2. a dominant gametophyte generation
  3. chlorophyll
  4. airborne spores
  5. bark

Answer(s): A

Explanation:

In order to grow taller than a few centimeters, plants need vascular tissues (xylem and phloem), which serve to carry water and nutrients back and forth from roots to leaves. Mosses are simple land plants that do not have these tissues and must live close to the ground, where available water can diffuse into key tissues. Mosses have chlorophyll (hence their green color) and spores. Whether or not a certain group of plants has a dominant gametophyte or sporophyte generation has nothing to do with how tall the plant can grow these are merely designations to indicate whether or not the plant we can see with our eyes (the dominant form) is diploid or haploid.



Two plants (A and B) of different species are growing together in the same pot. When plant A is removed and grown in a separate pot, it rapidly grows much taller than it had been before, while plant B dies. Which term describes the type of relationship that plants A and B most likely had?

  1. Mutualism
    Plant B dies without its host (plant A) around it, while the host can grow larger in the new pot, no longer weakened by the presence of the parasitic plant
  2. Commensalism
    A polymorphism is not a word that describes a relationship between two different species, but rather indicates that a particular trait (e.g. coloration) exists only as discrete variations in a population (in other words: black or white but no combination or continuous blending of those colors).
  3. Competition
  4. Parasitism
  5. Polymorphism

Answer(s): D

Explanation:

It is likely that plant B was a parasite of plant

A) Plant B dies without its host (plant A) around it, while the host can grow larger in the new pot, no longer weakened by the presence of the parasitic plant
B) A polymorphism is not a word that describes a relationship between two different species, but rather indicates that a particular trait (e.g. coloration) exists only as discrete variations in a population (in other words: black or white but no combination or continuous blending of those colors).



Viewing Page 5 of 103



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