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poizon [28]
3 years ago
13

Meredith notices that different plant fertilizers are made up of different chemicals. Some fertilizers are high in nitrogen. Oth

er fertilizers are high in phosphorus. Meredith hypothesizes that nitrogen-rich fertilizers are best to grow fruit crops such as strawberries. When she is designing her experiment, what should be her variable? A. type of fruit crop B. amount of light given to plants C. type of fertilizer D. amount of water given to plants
Biology
2 answers:
ololo11 [35]3 years ago
8 0

Answer:

Its C.Type of fertilizer

Explanation:

i got the same question and got it right

lisov135 [29]3 years ago
6 0

Answer:

C. type of fertilizer because the ferilizer varies in the amount of chemicals they have.

Explanation:

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In which eukaryotic organelle are various macromolecules broken down and destroyed?.
djverab [1.8K]

The Answer:

Lysosome.

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2 years ago
The endosperm is a unique tissue to ______.
Feliz [49]
I guess that the endosperm is a unique tissue to the flowering plants. (It helps in their reproduction).
8 0
3 years ago
Read 2 more answers
If autophosphorylation of CheA protein does not occur, then Escherichia coli cells must be _________.
Veseljchak [2.6K]

Options are no given in the question. The complete question is as follows:

If autophosphorylation of CheA protein does not occur, then Escherichia coli cells must be_________________.

A. in a gradient of a chemoattractant.

B. in a gradient of a chemorepellant.

C. tumbling.

D. rotating flagella clockwise.

Answer:

A. in a gradient of a chemoattractant

Explanation:

The autophosphorylation of CheA is described as the autophosphorylation of histidine kinase (s) (CheA protein) in the presence of MgCl 2 and ATP.

If autophosphorylation of CheA protein does not occur in Escherichia coli, then the cells of E.Coli undergo methylation events that allow cell in a gradient of chemoattractants which increases the activity of CheA and CheY-P and cells adapt according to the concentration of chemoattractant.

Hence, the correct answer is A.

8 0
3 years ago
Name one major difference between a prokaryote cell and a eukaryote cell
MAXImum [283]
The prokaryote cell is simpler, and therefore smaller, than a eukaryote cell, lacking a nucleus and most of the other organelles of eukaryotes. There are two kinds of prokaryotes: bacteria and archaea; these share a similar structure. 

<span>Nuclear material of prokaryotic cell consist of a single chromosome that is in direct contact with cytoplasm. Here, the undefined nuclear region in the cytoplasm is called nucleoid. </span>

<span>A prokaryotic cell has three architectural regions: </span>

<span>On the outside, flagella and pili project from the cell's surface. These are structures (not present in all prokaryotes) made of proteins that facilitate movement and communication between cells; </span>
<span>Enclosing the cell is the cell envelope – generally consisting of a cell wall covering a plasma membrane though some bacteria also have a further covering layer called a capsule. The envelope gives rigidity to the cell and separates the interior of the cell from its environment, serving as a protective filter. Though most prokaryotes have a cell wall, there are exceptions such as Mycoplasma (bacteria) and Thermoplasma (archaea). The cell wall consists of peptidoglycan in bacteria, and acts as an additional barrier against exterior forces. It also prevents the cell from expanding and finally bursting (cytolysis) from osmotic pressure against a hypotonic environment. Some eukaryote cells (plant cells and fungi cells) also have a cell wall; </span>
<span>Inside the cell is the cytoplasmic region that contains the cell genome (DNA) and ribosomes and various sorts of inclusions. A prokaryotic chromosome is usually a circular molecule (an exception is that of the bacterium Borrelia burgdorferi, which causes Lyme disease). Though not forming a nucleus, the DNA is condensed in a nucleoid. Prokaryotes can carry extrachromosomal DNA elements called plasmids, which are usually circular. Plasmids enable additional functions, such as antibiotic resistance. </span>
<span>--------------------------------------... </span>
<span>Eukaryotic cells </span>

<span>Plants, animals, fungi, slime moulds, protozoa, & algae are all Eukaryotic. These cells are about 15 times wider than a typical prokaryote and can be as much as 1000 times greater in volume. The major difference between prokaryotes and eukaryotes is that eukaryotic cells contain membrane-bound compartments in which specific metabolic activities take place. Most important among these is a cell nucleus, a membrane-delineated compartment that houses the eukaryotic cell's DNA. This nucleus gives the eukaryote its name, which means "true nucleus." Other differences include: </span>

<span>The plasma membrane resembles that of prokaryotes in function, with minor differences in the setup. Cell walls may or may not be present. </span>
<span>The eukaryotic DNA is organized in one or more linear molecules, called chromosomes, which are associated with histone proteins. All chromosomal DNA is stored in the cell nucleus, separated from the cytoplasm by a membrane. Some eukaryotic organelles such as mitochondria also contain some DNA. </span>
<span>Many eukaryotic cells are ciliated with primary cilia. Primary cilia play important roles in chemosensation, mechanosensation, and thermosensation. Cilia may thus be "viewed as sensory cellular antennae that coordinate a large number of cellular signaling pathways, sometimes coupling the signaling to ciliary motility or alternatively to cell division and differentiation." </span>
<span>Eukaryotes can move using motile cilia or flagella. The flagella are more complex than those of prokaryotes.

Hope this helps!! (If not I'm sorry!)</span>
5 0
3 years ago
It can be said that metabolism and homeostasis are related. Why can you not achieve homeostasis without metabolism?
Burka [1]
The answer is B.  hope this helps I have an 86.6 in biology.
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