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Biology
Marely
Which of the following factors act to bind cells together?
Which of the following factors act to bind cells together?
Glycoproteins, lipid-rafts, and cholesterol
Glycoproteins, specialized junctions, and cholesterol
Lipid-rafts, cholesterol, and glycolipids
Specialized junctions, wavy membrane contours, and glycoproteins
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Biology
Sierra Olson
In Biosafety Level 2 labs, workers must have specific training in handling pathogenic agents and be supervised by scientists competent in handling these agents.
A. True
B. False
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Biology
Bogey
Some bacteria have a whiplike tail called a bloom or a flagellum
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Biology
Jeffrey Jones
A group of birds have a similar body shape and size. However, they vary greatly in color and beak shape. Each species occupies its own niche and is adapted to the foods available in its niche. The evolution from a common ancestor to a variety of species is an example of ...
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Biology
Dingo
What is an average incubation time for sea turtle eggs? a One year b 40-60 days c 6-8 months d 10-20 days
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Biology
Alfonso Alvarez
The label below provides the number of chromosomes found in the body cells of various types of organisms
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Biology
Beckett Robles
Structures easily seen by the unaided eye
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Biology
Freddy Rowe
To create a simulation of 100,000 ants moving around inside a colony, a scientist needs to determine the average traveling speed for an actual ant. Which of the following is the best course of action for establishing this parameter?
A. Divide the total distance traveled by 100,000 ants in a day by 24 hours.
B. Determine the average traveling speed for 20 randomly selected ants.
C. Choose a random value to represent the average traveling speed of an ant.
D. Measure the traveling speed of a single ant, and assume all ants are the same.
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Biology
Abel Herring
A person's kidneys start secreting renin. This hormone is known to
regulate blood pressure
produce insulin
control glucose levels
raise calcium levels
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Biology
Monserrat Rivas
J. J. Thomson's experiment disproved the theory that an atom
is divisible.
is indivisible.
contains protons.
contains electrons. J. J. Thomson's experiment disproved the theory that an atom
is divisible.
is indivisible.
contains protons.
contains electrons.
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Biology
Jeffrey Montes
Truffles are the fruiting bodies of certain fungi whose mycelium grows below ground. The truffle is also underground and can be detected by many mammals, which eat the truffle and expel the spores with their feces. Which of the following statements is likely accurate with respect to this interaction?
a. Truffles probably produce toxins that can harm the mammals that eat them.
b. The truffle spores are probably wind-dispersed.
c. Truffle fruiting bodies are important in the decomposition of wood.
d. Truffles produce an odor that mammals can detect and find attractive.
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Biology
Cornelius Roberson
Why are horses and donkeys considered different species even though they can interbreed?
A) because horses and donkeys are not morphologically similar
B) because they came from different ancestors
C) because their offspring are infertile
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Biology
Esther
Describe the practice of no-till farming.
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Biology
Lucas Rodgers
An element's atomic number is 49. How many electrons would an atom of this element have?
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Biology
Yadiel Spencer
Which is the ability of a cell membrane to allow materials to pass through it called
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