Mechanoreceptors present in human skin are involved in tactile sensation. Where are the cell bodies of these mechanoreceptors located?
A. in the brain
B. in ganglia near the spinal cord
C. in the spinal cord
D. in the dermal layer of the skin near the
sensory endings of the mechanoreceptors
B
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Which of the following represents a difference between eccrine sweat glands and apocrine sweat glands?
a) Eccrine sweat glands are located deeper in the dermis than apocrine sweat glands. b) Eccrine sweat glands use exocytosis to make secretions, while apocrine sweat glands do not. c) Eccrine sweat glands begin to function at puberty, while apocrine sweat glands function throughout life. d) The secretions of apocrine sweat glands contain more fat and protein than do the secretions of eccrine glands.
Describe the mutualistic relationship that arbuscular mycorrhizae form with plants
What will be an ideal response?
In pea plants, round pea texture is dominant over wrinkled texture. How can you obtain true-breeding pea plants
having round peas with the least amount of work?
a. Cross plants having round peas with plants having wrinkled peas. Select round pea plants from the progeny because they are now true-breeding. b. Cross plants having round peas with other plants having round peas. Do this for multiple generations. c. Cross plants having round peas with plants having wrinkled peas. Select round pea plants from the progeny and do a testcross to determine which parental plants were homozygous dominant. d. Cross plants having round peas with plants having wrinkled peas. This will tell you which round pea plants are homozygous dominant and are thus true-breeding. e. It's not possible. You can only get true-breeding plants that have wrinkled peas.
If a parent cells has 48 chromosomes, how many chromosomes will each daughter cell have after mitosis and cytokinesis occurs?
A. 24 B. 48 C. 12 D. 96