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Morgarella [4.7K]
2 years ago
11

by what factor would the rate of diffusion across a membrane change if both its area and thickness doubled

Biology
1 answer:
Paul [167]2 years ago
4 0

Answer:

Size of particle.

Explanation:

Size of the particles that are diffusing is the factors that greatly affect the rate of diffusion. The rate of diffusion decreases if the thickness of the membrane becomes doubled while on the other hand, if the surface area of the membrane increases it doubled the rate of diffusion of the cell. If the size of particles is very small so it will diffuse if the membrane has double thickness.

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2. A male rabbit with the genotype GGbb is crossed with a female rabbit with the genotype ggBb
bekas [8.4K]

Answer:

- Half (8/16) of the offspring will have gray fur and black eyes.

- Half (8/16) of the offspring will have gray fur and red eyes.

- None (0/16) of the offspring will have white fur.

Explanation:

For the purposes of this question, we will assume the following notation for the involved alleles:

G: gray fur (dominant), g: white fur (recessive).

B: black eyes (dominant), b: red eyes (recessive).

A GGbb rabbit may only produce one type of gametes, namely Gb.

A ggBb rabbit may produce either gB or gb gametes.

Since not all theoretical combinations are present, the resulting Punnett square may be simplified as follows:

       |     Gb

——-+-————

gB   |   GgBb

——-+-————

gb   |   Ggbb

As seen above, 100% of the offspring will have a Gg genotype (resulting in gray fur). As for eye color, half of them will have a Bb genotype (resulting in black eyes) whereas the other half will have a bb genotype (red eyes).

6 0
3 years ago
A loopful of bacteria containing 1000 bacterial cells is inoculated into a nutrient broth and incubated. After a negligible lag
Black_prince [1.1K]

Answer:

<h2>a.  1000 X 2^8</h2>

Explanation:

As given;

Initial population of bacteria= 1000;

Log phase growth is exponential phase, period in which bacteria gets double.

Generation time= 15 minutes;

it means, bacteria get double in every 15 minute,

so after 2 hours, bacteria will have 8 generation times;

so the final generation of bacteria is =1000 X 2^8.

Final bacterial generation after two hours = 256,000(1000 X 2^8)

5 0
3 years ago
Why is it important to have both negative and positive feedback loops in the body
ELEN [110]

Answer: positive feedback loops enhance or amplify changes. this tends to move a system away from its equilibrium state and make it more unstable. Negative feedbacks tend to dampen or buffer changes. this tends to hold a system to some equilibrium state making it more stable.

Explanation:

7 0
2 years ago
Study the structure of the plant growing on the rock in the image. Based on its structure, to which group does the plant belong?
dusya [7]

The plants can be classified based on their vascular and reproductive structures. The plant given in the image belongs to the Bryophyta.

<h3>What is Bryophyta?</h3>

The non-vascular plants that are a part of the plant classification are found in moist places and are small in size belongs to the Bryophyta.

The plant of this classification have a leafy multicelled plant body, that lacks true leaves, roots, and stems.  They are green plants and also contains chloroplast for food synthesis.

The vascular tissue like xylem and phloem are completely absent and hence the transportation does not occur through specialized systems.

Therefore, option A. Bryophyta is the plant growing on the rock.

Learn more about Bryophyta here:

brainly.com/question/1435423

5 0
2 years ago
What type of muscle tissue is found in the heart? Compare the distinguishing properties of this muscle to other muscle tissue ty
garri49 [273]
The type of muscle found at the heart is the cardiac muscle tissue. This tissue has the phyical striped characteristic of a skeletal muscle tissue and works like a involuntary muscle because it works without our control

This type of tissue is packed wirh mitochondria which provides it with alot of energy. This is very crucial becaise the heart has to constantly beat

5 0
3 years ago
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