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balandron [24]
3 years ago
8

A gland formed by cells arranged in a one blind pocket with a single unbranched duct would be called

Biology
1 answer:
Elanso [62]3 years ago
5 0
<span>it is called simple alveolar</span>
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Cells of an organism perform the following chemical reaction
djverab [1.8K]
Tip,  <span>that is the equation for photosynthesis. a whale, rabbit, and earthworm cant photosynthesize because they do not have chloroplasts. photosynthesis occurs in chlorophyll.

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6 0
3 years ago
A scientist was studying bones from an individual who died thousands of years ago. Which portion of the bones was the scientist
ludmilkaskok [199]

Answer: Minerals

Explanation: The body decomposes and after about 40 to 50 years bones are mostly brittle and dry with no traces of flesh. After thousands of years bones also disintegrate (decay) leaving brittle mineral frame. The life of bones is determined by the soil type its buried in, nuetral soils takes longer then acidic soil condition.

In this case osteocytes(bone cells) are the first to decompose followed by the cartilage and bone marrow, leaving behind mineral traces that scientist can study after thousand years.

7 0
4 years ago
Read 2 more answers
use your understanding of genetics and explain how a set of twins can result in one individual who is male and one who is female
frosja888 [35]

Answer:

Fraternal twins

Explanation:

Hyperovulation is when a mother drops two or more eggs during a single cycle. Each egg acts individually and can be fertilized by a sperm. If egg A is fertilized by a sperm with Y chromosome and egg B is fertilized by a sperm with an X chromosome. Egg A will be a male child, while egg B will be a female child

8 0
3 years ago
Most biological molecules are joined by:
nikklg [1K]
Covalent bonds is the correct answer
7 0
3 years ago
Facilitated diffusion requires
KiRa [710]

Answer:

<h3>A. </h3>

Explanation:

<h3>Tutorial</h3><h3>Diffusion</h3><h3>Diffusion means that the net movement </h3><h3>of particles (molecules) is from an area of high concentration to low concentration.</h3>

<h3>Graph of the simple and facilitated diffusion taking into account the rate of uptake and the concentration</h3>

<h3>If the particles can move through the lipid bilayer by simple diffusion, then there is</h3><h3> no limit to the number that can fit </h3><h3>through the membrane. The rate of diffusion increases linearly as we add </h3><h3>more particles to one side of the membrane.</h3>

<h3>If the particles can only pass through protein channels, then the rate of </h3><h3>diffusion is determined by the number of channels as well as the number of particles.</h3>

<h3>Once the channels operate at their maximal rate, a further increase in </h3><h3>particle numbers no longer increases the apparent rate of diffusion. At this limited rate we describe the protein channel as being saturated.</h3>

<h3>The cartoon illustrates several points about facilitated diffusion. The particles are more concentrated on one side of the membrane, and yet they can move in both directions. However, the net movement is from high particle concentration to low. If the number of particles gets so high on one side of the membrane that they</h3><h3> interfere with diffusion through the </h3><h3>protein channel, then we observe a limit to the rate of diffusion at the point of saturation.</h3>

<h3>Illustration of facilitated diffusion</h3><h3>animation used with permission of the Virtual Cell Web Page</h3><h3>Problem 7 | Answer | Problem 8</h3><h3>The Biology Project > Cell Biology > Cell Membranes > Problem Set</h3>

<h3>The Biology Project</h3><h3>Department of Biochemistry and Molecular Biophysics</h3><h3>University of Arizona</h3><h3>May 2002</h3><h3>Revised: August 2004</h3><h3>Contact the Development Team</h3>

<h3>Simple diffusion does not require energy: facilitated diffusion requires a source of ATP. Simple diffusion can only move material in the direction of a </h3><h3>concentration gradient; facilitated </h3><h3>diffusion moves materials with and against a concertion gradient. </h3>

8 0
3 years ago
Read 2 more answers
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