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3 years ago

If the Pacific Ocean is rimmed by the Ring of Fire, what can we conclude about the plate boundaries in that region?

Biology

1 answer:

bulgar [2K]3 years ago

3 0

If the pacific ocean was rimmed by the ring of fire we can conclude that the plate boundaries are constantly moving

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An sixty-year-old man has painful fluid-filled vesicles that have begun crusting over in a wide band across the left side of his

Musya8 [376]

Answer: shingles, varicella-zoster virus

Explanation:

It should be noted that shingles usually occur with old people and it causes a painful rash when the chicken pox virus is reactivated in the body.

Since the man is old and has painful fluid-filled vesicles that have begun crusting over in a wide band across the left side of his lumbar area and also has a history of chickenpox, it's very likely it is shingles.

3 0

3 years ago

The bacteria grown in Luria broth with only lactose were expected to: Select one: a. Grow much faster than those grown in Luria

solniwko [45]

Answer:

Option D is correct

Explanation:

Luria broth contains yeast concentrate so it would show a marked B- galactosidase activity which is an enzyme that catalyzes the hydrolysis of B- galactosides including lactose and it is the first step of lactose fermentation.

5 0

3 years ago

Read 2 more answers

Liverworts, mosses and hornworts are non-vascular plants that reproduce by forming

iragen [17]

I am gonna say answer b. Spores

3 0

3 years ago

Place the following events in muscle contraction in the correct sequence from first to last. 1. ATP binds to myosin head. 2. Myo

sladkih [1.3K]

Answer:

The correct sequence of muscle contraction from first to last is given below

Explanation:

step 1 myosin head interacts with actin

step 2 ATP binds to myosin head

step 3 ATP is converted to ADP and Pi

step 4 ADP and pi are released from myosin

step 5 Myosin head pivots in the power stroke

step 6 Myosin head is cocked back.

7 0

3 years ago

At the molecular level, gene duplication often produces novelty in a lineage. This process provides another evolutionary pathway

alukav5142 [94]

Answer:

Bridgham et al. (2006) showed that the interaction between a steroid hormone (aldosterone-M) and its receptor (mineralocorticoid) evolved by Darwinian gradualism. In this work, the authors demonstrated a primitive affinity between the hormone and its receptor that was initially present in chemically similar but more ancient ligands. This result has implications in understanding the association between gene duplication and the evolution of hormone signaling pathways. For example, in invertebrates, this work reinforces the importance of gene duplication in the existing interaction between paralogous glucocorticoid receptors and their receptor mineralocorticoid genes that were derived from duplication (Thornton 2001).

The publications above cited are the following:

J.T. Bridgham, S.M. Carroll, and J.W. Thornton (2006). Evolution of hormone-receptor complexity by molecular exploitation. Science, 312(5770), 97-101.

JW Thornton. Evolution of vertebrate steroid receptors from an ancestral estrogen receptor by ligand exploitation and serial genome expansions, Proc Natl Acad Sci USA (PNAS), 2001, vol. 98 10 (pg. 5671-5676).

6 0

3 years ago