Biology, 30.05.2020 17:57 swagluxry

An important species of the Chesapeake Bay community is the Virginia oyster. The larvae of these oysters settle on top of mature oysters, forming large oyster reefs. Oyster reefs allow small fishes to avoid predators and provide shelter for a variety of marine invertebrates. Which of the following best describes the role of Virginia oysters in the Chesapeake Bay?

A. a pioneer species

B. a foundation species

C. an invasive species

D. a dominant species

Answers: 2

Show answers

Answers

Answer from: Quest

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

Answer from: Quest

it is either c or d and i know for sure it is not a or b

Answer from: Quest

Silicon is cut into tiny pieces for computer chipslead is melted to form pelletsliquid water freezes to form ice

Answer from: Quest

interphase

the period of cell growth when the cell synthesizes new molecules and organelles. the cell is not dividing and it constitutes the majority of the time spent in the cell cycle

prophase

changes occur in the nucleus and cytoplasm. the chromatin condenses to form structures (sister chromatids) visible with a light microscope and the mitotic spindle begins to form, but the nucleus is still in tact

prometaphase

the nuclear envelope fragments and the spindle microtubules attach to the kinetochores of the sister chromatids

metaphase

all the cell's duplicated chromosomes are lined up at an imaginary plane equidistant between the poles of the mitotic spindle

anaphase

begins when sister chromatids separate from each other and ending when a complete set of daughter chromosomes arrives at each of the two poles of the cell

telophase

the daughter nuclei form at the two poles of a cell

cytokinesis

the division of a cytoplasm to form two separate daughter cells. usually occurs during telophase during mitosis. this and mitosis make up to mitotic (m) phase of the cell cycle

Another question on Biology

Biology, 21.06.2019 16:30

Which organism is the producer in this food web? 7th grade question. a) arthropods b) birds c) fungi d) plants

Answers: 1

Answer

Biology, 22.06.2019 02:00

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

Answers: 1

Answer

Biology, 22.06.2019 07:00

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction.

Answers: 3

Answer

Biology, 22.06.2019 13:10

Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.

Answers: 2

Answer

You know the right answer?

An important species of the Chesapeake Bay community is the Virginia oyster. The larvae of these oys...

Questions