All categories

3 years ago

In which specimen were cells first identified?

Biology

2 answers:

butalik [34]3 years ago

8 0

The correct answer is:

cork bark

Explanation:

The cell was first discovered and described by Robert Hooke in 1665. He mentioned that it looked especially like cells or little rooms which friars occupied, in this way limiting the name. Nevertheless what Hooke really recognized as the dead cell dividers of plant cells (cork) as it bestowed up under the magnifying lens.

Kisachek [45]3 years ago

6 0

The correct answer is cork because that is when a scientist first discovered it in greece if i remember right<span />

You might be interested in

Both euglena (a eukaryote) and cyanobacteria are photosynthetic unicellular organisms found in pond water. The feature that dist

Usimov [2.4K]

Answer:

The presence of the nucleus!

Explanation:

Since it is a Bacteria, they do not have a nuclei. But eukaryotes do.

Both can reproduce(tip: Bacteria is asexual meaning it can reproduce by itself), has a membrane and have ribosomes

3 0

3 years ago

Which statements accurately describe elements? Check all that apply.

s2008m [1.1K]

Answer:

Elements are made up of only one type of atom.

Each element has a unique chemical symbol.

Elements can be identified by their atomic number.

6 0

4 years ago

During winter, tree sap can sometimes freeze and cavitation (the formation of an air pocket) may occur. Which one of the followi

SVETLANKA909090 [29]

Answer:

Option 3. cohesion transpiration is the correct answer.

Explanation:

Plants release water through transpiration while cohesion is responsible for moving more water throughout the xylem. When the water evaporate through the stomata, more water is pulled from roots into stem and eventually reach the leaf this process is called transpiration-cohesion theory. (More explanation in attached Picture)

8 0

3 years ago

Rotenone, a toxic compound isolated from plants, strongly inhibits the transfer of electrons from iron-sulfur centers in Complex

Darya [45]

Answer:

(A) It prevents electron flow from the iron-sulfur centers in complex 1 to the ubiquinone. Due to reduction in electron transfer rate, there is a decrease in the production of ATP which is dangerous for some insects and fish over time.

(B) It also prevents electron flow from cytochrome b to cytochrome c1 at the complex III which leads to QH2 accumulation. If oxidized Q is not present, these is alteration of electron flow and the production of ATP is altered.

(C) Rotenone only prevent electron transfer into the chain at Complex 1 but it does not affect electron transfer at Complex II. Although there is slow ETC, it does not stop completely. However, Antimycin A prevents the oxidation of QH2, the final electron acceptor crom complex I and complex II. Thereby, stopping the production of both ETC and ATP. It can be concluded that antimycin A is a more potent poison.

Explanation:

Rotenone prevents electron flow from the iron-sulfur centers in complex 1 to the ubiquinone. Due to a reduction in electron transfer rate, there is a decrease in the production of ATP which is dangerous for some insects and fish over time. Antimycin A also prevents electron flow from cytochrome b to cytochrome c1 at the complex III which leads to QH2 accumulation. If oxidized Q is not present, there is an alteration of electron flow and the production of ATP is altered. Antimycin A is more potent than rotenone.

7 0

3 years ago

Read 2 more answers

Why do plants at the bottom of a pond grow better than plants at the bottom of a lake

STALIN [3.7K]

Since ponds are typically shallower than lakes, this allows more sunlight to reach pond plants than lake plants. By getting my sunlight, these pond plants can photosynthesize more efficiently.

7 0

4 years ago