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Sveta_85 [38]
3 years ago
10

What invention allowed scientists to study cells for the first time?

Biology
1 answer:
Alina [70]3 years ago
8 0
The invention that allowed scientists to study cells for the first time is the Microscope
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​which biological factor is not known to contribute to aggressive behavior?
denpristay [2]

The correct answer is option b, that is, circadian rhythms.  

A roughly 24-hour cycle in the physiological procedures of living beings, comprising animals, plants, fungi, and cyanobacteria is known as a circadian rhythm. In a strict sense, circadian rhythms are produced endogenously, however, they can be modulated by external cues like temperature and sunlight.  

The circadian rhythms can affect the release of the hormone, sleep-wake cycles, digestion and eating habits, the temperature of the body, and other essential functions of the body.  


5 0
3 years ago
Which theory states that the more recent species are changed descendants of earlier species? biological evolution natural select
Alborosie
I believe the answer is letter A.
3 0
3 years ago
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If a woman with curly hair and a man with straight hair have a child with wavy hair, the gene for this characteristic of hair sh
Stells [14]

Answer:

The correct option is Incomplete dominance.

Explanation:

Incomplete dominance describes the situation in which the phenotype of heterozygous is different from that of their respective homozygous. It means that when both parents are homozygous for some feature, each expressing a particular phenotype, their heterozygous descendants have a phenotype that will be between the phenotypes of their parents. In the present case, the woman has curly hair ( dominant homozygous) and the man has straight hair (recessive homozygous), but the child have wavy hair (heterozygous), not curly nor straight.

7 0
3 years ago
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The conversion of malate to oxaloacetate in the citric acid cycle takes place with the conversion of NAD to NADH. In this reacti
Mariana [72]

Answer:

a) the oxidizing agent.

Explanation:

In the citric acid cycle, malate is dehydrogenated into oxaloacetate and the reaction is catalyzed by malate dehydrogenase. The released electrons are accepted by NAD+. So, NAD+ is reduced into NADH. The substances that accept electrons during chemical reactions and are reduced to oxidize the other substances are called oxidizing agents. NAD+ serves as an oxidizing agent as it accepts electrons to oxidize malate into oxaloacetate.

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The small in holes found on the plant leaves are called ​
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There are called the stomata

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