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yuradex [85]
3 years ago
8

Help me in biology ...

Biology
1 answer:
raketka [301]3 years ago
5 0
Are you in 7th grade ?? I remember doing this but all the answers were in the book. Did you not being your book home??
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Which source is the LEAST credible for scientific information?
Margarita [4]

Answer:

D) A Survey of fellow classmates

Explanation:

This is the correct answer because an informal survey involves various answers that may or may not be accurate.  Informal surveys cannot be held as scientific fact and are, therefore, not reliable. A scientific journal is reliable because it most likely includes data from an experiment and/or research of a trusted scientist or group. The results of past experiments are very reliable because these are the results of hard work and thorough planning and research. A scientific discussion with colleagues is not very credible because it involves the sharing of opinionated information, but it is certainly more reliable that the varying answers of school-aged peers.

4 0
3 years ago
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Which cell part converts food into energy that is usable by a cell?
Lisa [10]
A mitochondria converts glucose to energy
7 0
3 years ago
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Explain the phenomenon of photorespiration, including why it is thought to occur (evolutionarily speaking), and why plants have
liubo4ka [24]

Photorespiration limits casualty products of light reactions that build up in the absence of the Calvin cycle. In many plants, photorespiration is a problem because on a hot, dry day it can drain as much as 50% of the carbon fixed by the Calvin cycle.  The closing of stomata reduces access to CO2 and causes O2 to build up. These conditions favor a seemingly not useful process called photorespiration.  In most plants (C3 plants), initial fixation of CO2, via rubisco, forms a three-carbon compound.  In photorespiration, rubisco adds O2 instead of CO2 in the Calvin cycle. Photorespiration eats up O2 and organic fuel and releases CO2 without producing ATP or sugar. Photorespiration can evolve relic because rubisco first evolved at a time when the atmosphere had far less O2 and more CO2. 

4 0
3 years ago
Who are bigger, the red blood cells or the white blood cells?.
nlexa [21]

Answer:

White blood cells ↓

These are donut-shaped cells that are similar to red blood cells, and do have a similar duty, yet are larger.

5 0
2 years ago
Red pigment found in vertebrate blood that functions in oxygen transport is
Margarita [4]
The answer would be Haemoglobin.

The Haemoglobin is a red pigment found in RBCs of vertebrates that helps to transport oxygen to various tissues.
Vertebrate blood is bright red when it is oxygenated and dark red when it is deoxygenated. Some animals such as crustaceans or mollusks, use haemoglobin to carry oxygen instead of hemoglobin.

Hope This Helped!
3 0
3 years ago
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