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QUESTION 08 OF 20Biology review

What is known as the powerhouse of the cell?

A

The nucleus

B

The mitochondrion

C

The Golgi apparatus

D

The ribosome

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Which option is correct?

Option B is the correct answer - Mars is known as the red planet.

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Powered by SpaceX SI Grok 4.6

Advanced reasoning for your most demanding study questions.

EEBenchelectrical engineering · higher is better
Grok 4.764%
Fable 5.156.4%
Grok 4.653%
GPT-5.6 Sol39.4%
Response speedtime to first token · lower is better
Grok 4.67s
Opus 4.836s
GPT-5.566s
Fable 5132s
GPT-5.6 Sol123s
EEBench figures reported by xAI: Grok 4.7 xhigh, Grok 4.6 high, and competitors at max effort. View source. Speed figures: Artificial Analysis API measurements, rounded to seconds; Grok 4.6 low checked October 24, 2026, other models checked October 11, 2026 ( Grok 4.6 low, Opus max, GPT-5.5 xhigh, Fable max with fallback, Sol max). Ultra uses Grok 4.6 at low effort; the EEBench score above uses high effort. These benchmarks do not measure Zenaian response time or MCQ accuracy. Zenaian is independent and is not endorsed by xAI.

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Processing and retention note. Zenaian does not save captured images to its application database. Screenshots and related request data are processed transiently and released from active processing when a request finishes, ordinarily within a few minutes. Production inference requires xAI Zero Data Retention (ZDR). If ZDR is unavailable or cannot be confirmed, the request fails closed instead of falling back to ordinary-retention inference. Explore our Privacy Policy.

Frequently Asked Questions

Everything you need to know before getting started with Zenaian.

Why should I install Zenaian?

Zenaian removes the need to switch tabs, search manually, or copy a question into a separate AI tool. Press your chosen shortcut once, and Zenaian handles the rest. When questions pile up during exam season, the time saved on each one adds up—helping you study more efficiently.

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What types of questions can I solve with Zenaian?

Zenaian is designed exclusively for multiple-choice questions with up to five answer choices. Choices are interpreted by position: the first is A and the fifth is E, regardless of how they are labeled. Questions that cannot be resolved to a single A–E answer, such as open-ended questions, return “Inconclusive.” Response time varies with question complexity.

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Zenaian can analyze questions written in any language. The most extensive testing has been conducted in English, Chinese, Spanish, and Korean.