Smooth muscle, a type of specialized muscle cell, functions in which process? 1. food digestion 2. skeletal movement 3. pumping of blood 4. heart contraction
Which feature is shown ONLY by higher invertebrates, as compared to lower invertebrates? Bilateral symmetry True coelom Three germ layers
What did Charles Darwin discover as a result of his experiments with breeding pigeons? A. Desirable traits can be selected for and bred in offspring. B. Humans can create new species through selective breeding. C. Dogs and plants can be bred the in same way as pigeons. D.The pigeons had distinctive traits that were passed on to offspring.
The food for dicot embryos is stored in the endospermcotyledons while food for monocot embryos is stored in the cotyledonsendosperm .
Which human activity negatively affects the stability of the environment? A.Dumping pollutants into the ocean B.Recycling plastic C.Creating wildlife reserves D.Planting trees
Mantle material rises in convection currents because heated materials become more dense. truth or false
What role does your heart play in delivering oxygen to your body cells? The heart breaks down carbon dioxide into carbon and oxygen. The heart pumps oxygen-rich blood to your body cells. The heart pumps oxygen through the alveoli, which deliver it to body cells. The heart takes in oxygen from the environment and delivers it to cells.
During solstice, around June 21 each year, people in the northern hemisphere can expect A. only 5 hours of sunlight. B. a long day of sunlight. C. 12 hours of sunlight. D. no sunlight
A waste product of respiration in animals that is used by plants to carry out photosynthesis is a. carbon dioxide. c. calcium carbonate. b. carbon monoxide. d. sodium bicarbonate.
In angiosperms, what is the name of the outer epidermal layer that protects the plant body? Vascular tissue Dermal tissue Ground tissue
Which of these is true of the materials making up the buffy coat in centrifuged blood? which of these is true of the materials making up the buffy coat in centrifuged blood? they are less dense than both erythrocytes and plasma. they are denser than erythrocytes but less dense than plasma. they are intermediate in density between erythrocytes and plasma. they are denser then plasma and erythrocytes?
Which best describes homeostasis?. a Specialized cells work independently to perform their specific functions.. b Specialized cells work only as a team to perform the functions of the body.. c Specialized cells work independently to perform specific functions and also as a team to perform the functions of the body.. d Specialized cells in the body perform all the functions that are necessary to maintain homeostasis.
What tissue type has polarity and is avascular? what tissue type has polarity and is avascular? muscle connective tissue epithelium nervous tissue?
Which best describes the direction of heat? (a) from a substance with no thermal energy to a substance with high amounts of thermal energy (b) from a substance with less thermal energy to a substance with more thermal energy (c) from a cooler substance to a warmer substance (d) from a warmer substance to a cooler substance
Who discovered the monomers of nucleic acids? Phoebus Levene James Watson, Francis Crick, and Rosalind Franklin Friedrich Miescher Gerardus Johannes Mulder and Jöns Jacob Berxelius
Why do classification systems change over time? A. Scientists find new evidence in their studies. B. Scientists use old methods of classification. C. Scientists repeat experiments and find no changes. D. Scientists find similar evidence to previous work.
How does ATP supply energy for cellular activities? A. by breaking off a phosphate group from its structure B. by releasing the sugar molecule from its structure C. by adding a phosphate group to its structure D. by attaching itself to a glucose molecule
The __________ and __________ are the glands that stimulate reproductive cycles. a. testes . . . thyroid b. testes . . . ovaries c. ovaries . . . thyroid d. ovaries . . . thymus
Which of the following statements about forestry education is true? A.) All educational facilities cover forestry to the same depth. B.) Individuals can pursue doctorates in forestry in any state. C.)Program focus will remain the same from state to state. D.)Some states have greater access to forestry programs than others.
How are proteins distinguished from each other? a. by the amounts of carbon, oxygen, and hydrogen they contain b. by the kinds of fatty acids they contain c. by the kinds of bonds that join their monomers d. by the order of the amino acids that form them?
Koala Bears are a specialist species because they _______. a. only eat eucalyptus leaves b. are marsupials c. live in trees d.
When researchers create __________, they are destroying a piece of the brain. A. holes B. currents C. images D. lesions
Female gametangia are called while male gametangia are called . Squash and tomatoes are vegetables. TRUE or FALSE.
Consider the following events of photosynthesis. 1. Light energy excites electrons. 2. Water molecules are split. 3. NADPH is formed. In which locations do each of these events occur? A) 1. photosystem II 2. photosystem I 3. photosystem I B) 1. photosystem II 2. photosystem II 3. photosystem I C) 1. photosystem I 2. photosystem I 3. photosystem II D) 1. photosystem I 2. photosystem II 3. photosystem II
What does an Open Office or Microsoft Office Wizard do? A. suggests a better way to present your data B. analyzes your data and points out errors C. guides you through the steps to complete a complex task D. adds color and styles to make your data look better
Which is a correct interpretation of the cladogram shown below? A. Amoeba B. Trout and koalas are in the same class C.Tout do not have segmented bodies D. Koalas evolved after trout
Talking about all things lunar, which of these forms of madness is related to the moon? A) HystericaB) LunacyC) InsanityD) Biebermania