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3 years ago

What cell shape might increase the surface area and decrease the volume?

2 answers:

5 0

For the answer to the question above, it is Considered as a cell shaped like a perfect sphere: it has a surface area of 4πr 2, and a volume of (4/3)πr 3. The surface-to-volume ratio of a sphere is 3/r; as the cell gets bigger, its surface-to-volume ratio decreases, making diffusion less efficient.

Sholpan [36]3 years ago

3 0

Answer:

Convoluted surface

Explanation:

When a cell has a convoluted surface such as it has flagella, cilia and other locomotion organs as part of its essential body structure then such cells have a high ratio of surface area to volume .

In such conditions the surface area increases but the volume decreases . However there certain losses due to high surface area such as loss of water and dissolved nutrients

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If T = tall and t = short for a pea plant, what would a pea plant that has Tt as its alleles for that trait look like ?

Vikentia [17]

Answer:

B. Tall

Explanation:

since an allele that's paired with a dominant allele has no effect on the organism.

5 0

3 years ago

Read 2 more answers

If a crystal of potassium permanganate is placed on agar and after 15 minutes the diameter of the area over which the dye has sp

Vadim26 [7]

Answer:

Diffusion rate is 1.96 × $10^{-3}$ $cm^{2}$ /s

Explanation:

Diffusion is the process in which the molecules of a substance propagates from a region of higher concentration to region of lower concentration through a semi-permeable membrane.

diffusion rate = $\frac{area}{time}$

Given that; diameter = 15 mm, time = 15 minutes.

The dye spread in a circular form, so that;

area = $\pi$ $r^{2}$

r = $\frac{diameter}{2}$ = $\frac{15}{2}$ = 7.5 mm = 0.75 cm

area = $\frac{22}{7}$ × $(0.75)^{2}$ = 1.7679 $cm^{2}$

time = 15 minutes = 15 × 60 = 900 seconds

So that;

diffusion rate = $\frac{1.7679}{900}$

= 0.0019643 $cm^{2}$ /s

Diffusion rate is 1.96 × $10^{-3}$ $cm^{2}$ /s

7 0

4 years ago

Question 4 of 10

ASHA 777 [7]

I think is b so yeah if I’m wrong I’m really sorry

4 0

3 years ago

The leafy canopy of a tree slows the impact of raindrops and the root system of a tree absorbs water and holds soil in place. Wh

lapo4ka [179]

The environmental benefit of the leaf canopy of a tree slowing down the impact of raindrops and the root system absorbing water and holding soil in place would be that the water erosion of soil would be minimized.

The washing away of topsoil by water is termed water erosion. This event has a number of impacts on the ecosystem, including:

reduced agricultural yields
damages to infrastructures such as roads
washing away into nearby water bodies can cause eutrophication
water quality of nearby water bodies becomes impacted negatively

The leaf canopies of trees prevent raindrops from having maximum impact on soil structure while the roots of trees absorb water and also holds soil structure together to limit water erosion of the soil. This will in turn prevent negative consequences to the environment.

More on water erosion can be found here: brainly.com/question/7567484

4 0

3 years ago

many endangered species are predators that belong to the higher trophic levels. Which is the process that primarily affects anim

Marta_Voda [28]

Answer:

Top predators at the highest trophic levels eat lower-level predators and herbivores

Explanation:

A trophic level is defined as one group of organisms in the ecosystem occupying the same level in the food chain, which is composed of different levels (primary, secondary and higher levels). Top predators at the higher levels maintain the trophic balance by eating other species that eat on primary producers/consumers, thereby favoring the homeostasis of the ecosystem.

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3 years ago