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snow_lady [41]
3 years ago
7

Were the first organisms that released oxygen as a by-product of photosynthesis.

Biology
1 answer:
FrozenT [24]3 years ago
6 0

Answer:

Blue green algae or cynobacteria

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What are at least three differences between apes and humans in the cranium and teeth?
Mama L [17]
 The following are key characteristics of ape skulls that human skulls do not have:

(1) Prognathic Jaws: A chimpanzee’s maxilla (upper jaw) and mandible (lower jaw) protrude significantly. Typically, the bone from the nose to the tip of upper teeth extrudes out at about a 45 degree angle, whereas a line drawn from the nose to the chin of a typical human is vertical or concave.

(2) Large Brow Ridges above the eye sockets. Humans have negligible brow ridges.

(3) Absent or small laid back forehead: Apes lack significant vertical foreheads. Humans have large vertical foreheads, which provide room for the much larger frontal lobeof our brains. This is an important difference, as the large frontal lobe of the human brain allows us the ability to make decisions and solve problems. It also controls our behaviors, voluntary movements, emotions, and consciousness. Without a forehead, an animal would not have room for a large frontal lobe, and could not perform functions that differentiate animals from humans. The ability to make tools, improve on them, and the ability to remember how to make them, wouldn’t be possible without a forehead and large frontal lobe.

(4) Small Ovoid or Flat Cranium that houses their much smaller brains. Human adult craniums are about two to three times the volume of ape craniums. Ape craniums are narrower than the lateral extents of the eye sockets, whilst human craniums are far wider then the outer extend of their eye sockets. 

8 0
3 years ago
predict one parent is heterozygous for a recessive genetic disorder, and the other parent is homozygous for the dominant allele.
GarryVolchara [31]
None of them are likely to express the recessive trait because they all have a dominate allele in their genotype. 2 of them will be homozygous dominant, but two of them will be heterozygous and carriers for the disease.
8 0
3 years ago
What do people use energy for?
olga nikolaevna [1]

Answer:

it depends what kind of energy your taking about, like human energy or nonrenewable energy. If it is human energy then the option c, but if it is nonrenewable energy than b.

Explanation:

the other options aren't very logical

3 0
3 years ago
BRAINLIEST! DECENTLY EASY
damaskus [11]

Answer:pre-formed structures and chemicals, and by infection-induced responses of the immune system.

Explanation: brainliest?

3 0
3 years ago
Choose the true statement(s) that support(s) the endosymbiotic theory. To be marked correct, you'll need to select all true stat
horsena [70]

Answer:

a.Many mitochondrial genes resemble proteobacteria genes, while the genes in the chloroplast resemble genes found in some photosynthetic bacteria.

c.Mitochondria and chloroplasts both have their own circular DNA and 70S ribosomes that are similar to those found in bacteria.

d.Mitochondria and chloroplasts replicate by a process similar to mitosis.

Explanation:

Endosymbiotic theory states that mitochondria and chloroplast which are organelles of eukaryotic cells were once independently living micro-organisms but with due course of time eukaryotic cells engulfed them and they become an integral part of these eukaryotic cells.

The resemblance between mitochondrial genes with those of proteobacteria and chloroplast genes with photosynthetic bacteria strongly support endosymbiotic theory. Apart from this, the presence of their own DNA that too circular just like prokaryotic microbes and 70 S ribosomes also support this theory. Also just like prokaryotic cells, before cell division mitochondria and chloroplasts undergo replication by means of a process known as binary fission.

3 0
3 years ago
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