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MAVERICK [17]
3 years ago
8

Greg wants to build a tree house. He wants the house to last for a long time and to not be broken down by rain, snow, and wind.

Which of the following would help Greg to choose a durable building material?
Biology
2 answers:
Makovka662 [10]3 years ago
7 0

Answer:

Build several models of his tree house out of different materials, and see which model holds up best to wind, water, and ice.

Explanation:

bulgar [2K]3 years ago
4 0

Build several models of his tree house out of different materials, and see which model holds up best to wind, water, and ice.

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According to the theory of endosymbiosis, the origin of chloroplasts probably involved:_______
bija089 [108]

Answer: Option C  

Explanation:

Engulfing of the small photosynthetic by a larger cell. The theory of the endosymbiotic states that the ingested bacteria  and the host cell can easily become dependent on each other for the survival which results in the permanent relation.

Over millions of year, the mitochondria and the chloroplast have become more specialized and they cannot live outside the cell.

Hence, the correct answer is option C  

3 0
3 years ago
3. What charts, tables, or drawings would clearly show what you have learned in this lab?
Semmy [17]

Answer:

approtiate labels is the right ans. I think

7 0
3 years ago
in which case would facilitated diffusion be needed?A. With large polar molecules moving against the concentrationgradientB. Wit
miv72 [106K]

Biology > Cell biology > Passive transport

There are different types of transport in the cell that can be classified into two groups: passive transport (which does not require energy) and active transport (which requires energy because it goes against the concentration gradient).

Diffusion is a type of passive transport and it does not require energy, it can be divided into simple diffusion (molecules pass through the membrane without the help of any channel) and facilitated diffusion (molecules pass through the membrane with the help of a protein channel).

Facilitated diffusion will transport certain molecules and simple diffusion others. Larger, polar and charged molecules will need help to cross the membrane, so they will do so by facilitated diffusion. Therefore, the answer is D.

3 0
1 year ago
What is the best description of the evolution of camouflage by natural selection?
Len [333]
<span>Natural selection means that the individuals that are best adapted within a population are the ones that will survive.</span>
5 0
3 years ago
Halobacterium has a photosynthetic membrane that appears purple. its photosynthetic action spectrum is the inverse of the action
a_sh-v [17]

Yellow- Green Wavelength of light at peak absorption of 565nm.

Halobacterium is known to be a member of Archaea and they thrive in very salty environment such as Great Salt lake and Dead Sea. Halobacteria under the process of photosynthesis with chlorophyll and they make their ATP from the sunlight using bacteriorhodopsin and halorhodopsin as photosynthetic pigments.

However, photosensory pigements found in Halabacterium were:

1. photosystem 565 which is used to respond to yellow –green light in other for cell to find optimum conditions for ATP synthesis and photophosphorylation and they have peak absorbtion at 565nm.

2. Photosystem 370 nm appears to be responsible for the protective avoidance of blue/UV light.

6 0
3 years ago
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