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2 years ago

Circle the letter of each sentence that is true about the cell wall.

Biology

2 answers:

notka56 [123]2 years ago

6 0

Answer:

D.Water and oxygen cannot pass through the cell wall

Explanation:

not sure

Rasek [7]2 years ago

6 0

B is true for sure. C is definitely not true, they only have a cellular membrane

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An ecologist notes an increase in algae growth in a river adjacent to a farm that uses fertilizers. what can she infer from this

qwelly [4]

<span>One can infer from this situation the following things: first, the fertilizers used in the farm eventually get to the adjacent river. Second, these fertilizers may be providing some benefitial conditions to the algae, allowing it to grow exponentially and strongly.</span>

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3 years ago

What cell organelle is responsible for making the vesicles for exocytosis to occur?

Dmitry [639]

Answer:

cell membrane i think

Explanation:

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2 years ago

suppose you use a microscope yo look at a skin of a n onion what struturce will you see that would not be found in your skin cel

Softa [21]

Onion skin is a plant cell. And your skin cell is a animal cell.
Basically as simple all the structures in animal cell can be found in plant cells. But plant cells has some extra structure and part where doesn't exist in animal cells.
In animal cell, it contains a cytoplasm, nucleus and a cell membrane.
But in plant cell, they have chloroplast, cell wall and vacuole in additional.

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3 years ago

If a single cell dies in a multicellular organism, what happens to the organism

Rina8888 [55]

Remember the cell theory by Virchow that states that all cells come from pre existing cells, if a single cell dies, it can be replaced unless it's a brain cell.

4 0

3 years ago

The trait for medium-sized leaves in iris is determined by the genetic condition PP'. Plants with large leaves are PP, whereas p

loris [4]

Answer:

See the answer below

Explanation:

Medium size leaves genotype = PP'

Large leaves genotype = PP

Small leaves genotype = P'P'

Red flower genotype = RR

Pink flower genotype = RR'

White flower genotype = R'R'

Two plants each with medium-sized leaves (PP') and pink flowers (RR') were crossed.

PP'RR' x PP'RR' (let PP' = Aa and RR' = Bb)

Progeny and expected phenotypes

1 PPRR - large leaves, red flower = 1/16 x 640 = 40 seedlings

2 PPRR' - large leaves, pink flower = 2/16 x 640 = 80 seedlings

2 PP'RR - medium leaves, red flower = 2/16 x 640 = 80 seedlings

4 PP'RR' - medium leaves, pink flower = 4/16 x 640 = 160 seedlings

1 PPR'R' - large leaves, white flower = 1/16 x 640 = 40 seedlings

2 PP'R'R' - medium leaves, white flower = 2/16 x 640 = 80 seedlings

1 P'P'RR - small leaves, red flower = 1/16 x 640 = 40 seedlings

2 P'P'RR' - small leaves, pink flower = 2/16 x 640 = 80 seedlings

1 P'P'R'R' = small leaves, white flower = 1/16 x 640 = 40 seedlings

4 0

2 years ago