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Cell Reproduction
Genetics
Cells and Cell Structure
Body Systems
The Ecosystem
100
Testosterone directly affects the (1) formation of a zygote (2) changes within an ovary (3) production of sperm cells (4) development of a placenta
What is (3) production of sperm cells
100
In the past, humans developed varieties of dogs, such as the German shepherd and the bearded collie, using (1) selective breeding for particular traits (2) recombination of genes during mitosis (3) mutations present only in body cells (4) natural selection of favorable traits
What is What is (1) selective breeding for particular traits
100
Which cell structures are correctly paired with their functions? (1) The mitochondria produce enzymes, and ribosomes transport them. (2) The ribosomes make proteins, and the nucleus stores genetic information. (3) The cell membrane makes enzymes, and cytoplasm transports them. (4) The vacuole stores genetic information, and chloroplasts make proteins.
What is (2) The ribosomes make proteins, and the nucleus stores genetic information.
100
The action of insulin on sugar levels in the blood helps to (1) interfere with homeostasis (2) maintain dynamic equilibrium (3) coordinate enzyme production (4) regulate digestion of protein
What is (2) maintain dynamic equilibrium
100
The honeybee decline, which is affecting domesticated and wild bee populations around the world, is mostly the result of diseases spread as a result of mites and other parasites as well as the spraying of crops with pesticides, scientists say.... The decrease in the honeybee population is partly due to (1) the use of pesticides (2) a decrease in prey (3) the use of fertilizers (4) a decrease in fruits and vegetables
What is (1) the use of pesticides
200
A pathogen passing from a mother to her fetus could cause (1) a decrease in the chromosome number of the fetus (2) an increase in milk production in the mother (3) gamete production to increase (4) an infection in the fetus
What is (4) an infection in the fetus
200
In an organism, a muscle cell has the same DNA as a nerve cell, yet the cells perform different functions. This is possible because (1) different mutations occur in each cell type, changing the genetic instructions (2) temperature variations within the body alter DNA (3) proteins in each cell type change the structure of DNA (4) different parts of the genetic instructions are used in each type of cell
What is (4) different parts of the genetic instructions are used in each type of cell
200
Which two processes are responsible for keeping the percentage of atmospheric oxygen at relatively constant levels? (1) circulation and coordination (2) respiration and coordination (3) respiration and photosynthesis (4) photosynthesis and circulation
What is (3) respiration and photosynthesis
200
The energy used to obtain, transfer, and transport materials within an organism comes directly from (1) ATP (2) DNA (3) sunlight (4) starch
What is (1) ATP
200
A decrease in honeybee populations will (1) eliminate the need to spray crops (2) increase the number of bee parasites (3) reduce the occurrence of natural disasters (4) disrupt the stability of an ecosystem
What is (4) disrupt the stability of an ecosystem
300
Which sequence best represents sexual reproduction? (1) mitosis → gametes → zygote → fertilization (2) gametes → meiosis → mitosis → fertilization (3) fertilization → gametes → meiosis → zygote (4) meiosis → gametes → fertilization → zygote
What is (4) meiosis → gametes → fertilization → zygote
300
Coded instructions that are passed from one generation to the next can be most directly changed by the processes of (1) passive transport, natural selection, and synthesis (2) selective breeding, replication, and absorption (3) recombination, mutation, and genetic engineering (4) evolution, reproduction, and digestion
What is (3) recombination, mutation, and genetic engineering
300
In a cell, protein synthesis is the primary function of (1) ribosomes (2) mitochondria (3) chloroplasts (4) vacuoles
What is (1) ribosomes
300
It is recommended that people at risk for serious flu complications be vaccinated so that their bodies will produce (1) antigens to fight the flu virus (2) antibodies against the flu virus (3) toxins to fight the infection caused by the flu virus (4) antibiotics to reduce symptoms caused by the flu virus
What is (2) antibodies against the flu virus
300
Which type of organism helps to reduce atmospheric carbon dioxide? (1) carnivores (2) producers (3) decomposers (4) herbivores
What is (2) producers
400
Which statement best describes how a new human trait develops and can be passed on to future generations? (1) A mutation in a stomach cell results in the inability of a woman to produce a certain digestive enzyme. (2) A mother consumes alcohol during pregnancy, causing the fetus to have a low birth weight. (3) During meiosis, a new combination of DNA subunits is formed. (4) During mitosis, DNA does not divide correctly and the cells die.
What is (3) During meiosis, a new combination of DNA subunits is formed.
400
Ancestors of the giant panda had rounded paws with five very short toes. Today, the giant panda has a sixth toe, often referred to as a thumb, even though it develops from a wrist bone. This unique thumb is an adaptation that allows the panda to easily hold and eat bamboo shoots. The presence of the giant panda’s thumb is most likely the result of (1) natural selection (2) selective breeding (3) asexual reproduction (4) ecological succession
What is (1) natural selection
400
In a multicellular organism, organs carry out a variety of life functions. In a single-celled organism, these functions are performed by (1) tissues (2) organelles (3) organ systems (4) organs
What is (2) organelles
400
A direct indication that the white blood cells of the body are functioning would be (1) an increase in the number of oxygen molecules in the lungs (2) a decrease in the number of pathogens in the body (3) a decreased secretion of hormones by certain glands (4) an increase of carbon dioxide in the cells of the body
What is (2) a decrease in the number of pathogens in the body
400
The greatest number of relationships between the organisms in an ecosystem is best shown in (1) a food chain (2) an energy pyramid (3) a food web (4) an ecological succession diagram
What is (3) a food web
500
Melanoma is a type of cancer in which abnormal skin cells divide uncontrollably. Some chemotherapy drugs, which stop the growth of the cancer, directly interfere with the process of (1) meiosis (2) coordination (3) mitosis (4) recombination
What is (3) mitosis
500
21 The instructions for the genetic traits of an organism are directly determined by the (1) numbers of A, T, C, and G units in a sugar molecule (2) sequence of bases in DNA molecules (3) length of a DNA molecule (4) way the bases are paired in the two strands of a DNA molecule
What is (2) sequence of bases in DNA molecules
500
Which sequence represents the levels of biological organization from smallest to largest? (1) organism → cell → tissue → organelle → organ system → organ (2) organ system → organ → organism → cell → tissue → organelle (3) organelle → organ system → cell → organism → tissue → organ (4) organelle → cell → tissue → organ → organ system → organism
What is (4) organelle → cell → tissue → organ → organ system → organism
500
The failure of the human body to effectively maintain dynamic equilibrium can result in (1) reproductive success (2) gene manipulation (3) differentiation (4) disease
What is (4) disease
500
Researchers have reported that the number of different species of fish found in certain areas of the ocean has been greatly reduced over the past 50 years. This situation is an example of (1) a loss of biodiversity (2) an increase in ecological succession (3) a lack of differentiation (4) an increased carrying capacity
What is (1) a loss of biodiversity